Статті в журналах: "Strength of the cutting"

1

Olena, Soroka, Rodichev Iuriy, Vorontsov Borys, and Protasov Roman. "Structural Strength of Cemented Carbides." Strojnícky časopis - Journal of Mechanical Engineering 71, no. 2 (November 1, 2021): 291–98. http://dx.doi.org/10.2478/scjme-2021-0035.

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Abstract The concept “structural strength of tool materials” got further development. The refusals of cemented carbide cutting plates, when heavy machining were analyzed. It was shown that 70…80% of refusals are the microchipping of cutting edges, tool cutting part chipping, cutting plate macrofracture. To assess cutting plate total carrying capacity and the influence of different methods of cemented carbides modification, bending tests were held. Local fracture resistance and damageability of cutting edge were assessed under its continuous scanning.

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2

Mitin, E. V., and S. P. Sul’din. "Hob Strength in Gear Cutting." Russian Engineering Research 38, no. 8 (August 2018): 635–37. http://dx.doi.org/10.3103/s1068798x18080105.

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3

Vichev, Stefan, Vanyo Kirov, and Dobril Hristov. "Strength calculation of cutting tools." International Journal of Machine Tools and Manufacture 34, no. 1 (January 1994): 13–18. http://dx.doi.org/10.1016/0890-6955(94)90036-1.

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4

Wan, Song, and Jun Liu. "Commentary: Strength at the cutting edge." JTCVS Techniques 2 (June 2020): 58–59. http://dx.doi.org/10.1016/j.xjtc.2020.02.008.

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5

Vereschaka, Anatoliy Stepanovich, Sergey N. Grigoriev, Valery P. Tabakov, Ekaterina S. Sotova, Alexey Anatolevich Vereschaka, and Mikhail Yu Kulikov. "Improving the Efficiency of the Cutting Tool Made of Ceramic when Machining Hardened Steel by Applying Nano-Dispersed Multi-Layered Coatings ." Key Engineering Materials 581 (October 2013): 68–73. http://dx.doi.org/10.4028/www.scientific.net/kem.581.68.

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The functional role of nano-dispersed multi-layered composite coatings (NMCC) deposited on the working surfaces of cutting inserts (CI) made of the layered high-strength ceramic (LHC) to equip the cutting tools when cutting hardened (high-strength) steels was investigated. It is shown that the variation in the composition, structure and properties of coatings allows controlling the contact processes at cutting, increasing the length of contact, reducing normal contact stresses and probability of micro- and macro-brittle failure of tool cutting edge. The mathematical models of cutting which establish dependences of flank wear land of the tool, the tangential component of cutting force, power of cutting and roughness of the machined surface from conditions of cutting of high-strengthen steels are developed. It is found out that the application of nano-dispersed ceramic multi-layered coatings on ceramic tool significantly increases its wear resistance and improves the quality of machining.

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6

Kozlov, Victor, and Jia Yu Zhang. "Strength of Cutting Tool in Titanium Alloy Machining." Key Engineering Materials 685 (February 2016): 427–31. http://dx.doi.org/10.4028/www.scientific.net/kem.685.427.

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In this paper, contact conditions between cutting tool and work material, strength of cutting tool are analyzed. Experimental and theoretical studies of contact load distribution on the artificial flank wear-land that appears on the cutter in a free orthogonal turning disk of titanium alloy (Ti-6Al-2Mo-2Cr) are described. Calculations of internal stresses by the method of finite elements show that for the sharp cutter the main stresses into cutting wedge near to the cutting edge are compression stresses, very large (10 000 MPa) and exceed ultimate compression stress for cemented carbide. Decreasing of main stress with appearance of wear on the flank explains ability working of cutter even at large wear on the flank. Increasing of cutter’s break off probability with appearance of large wear on the flank is explained by increasing of zone where the internal stresses are large enough (more or equal 3 000 MPa) and increasing of defects probability into this zone, which serves as source of cracks. Abbreviation and symbols: m/s – meter per second (cutting speed v); mm/r – millimeter per revolution (feed rate f); MPa – mega Pascal (specific contact load as stress σ or τ); hf – the width of the flank wear land (chamfer) of the cutting tool, flank wear land can be natural or artificial like in this paper [mm]; xh – distance from the cutting edge on the surface of the flank wear land [mm]; σh – normal specific contact load on the flank land [MPa]; τh – shear (tangential) specific contact load on the flank land [MPa]; HSS – high speed steel (material of cutting tool); Py r – radial component of cutting force on the rake face [N]; Pz – tangential component of cutting force [N]; γ – rake angle of the cutting tool [°]; α – clearance angle of the sharp cutting tool [°]; αh – clearance angle of the flank wear land [°]; b – width of a machined plate or disk [mm]; σ-UTS - ultimate compression stress [MPa]; σUTS - ultimate tensile stress [MPa].

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7

Írsel, G., and B. N. Güzey. "Comparison of laser beam, oxygen and plasma arc cutting methods in terms of their advantages and disadvantages in cutting structural steels." Journal of Physics: Conference Series 2130, no. 1 (December 1, 2021): 012022. http://dx.doi.org/10.1088/1742-6596/2130/1/012022.

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Abstract The laser beam, plasma arc, and oxygen cutting methods are widely used in metal cutting processes. These methods are quite different from each other in terms of initial setup cost and cutting success. A powered laser beam is used in laser beam cutting, plasma is used in plasma arc cutting, flammable gas - oxygen mixture is used in the oxygen cutting method. In this study, the cutting success of these methods was investigated on tensile specimens. Microstructure, hardness (HV 0.1), surface roughness, and strengths were investigated after the cutting process. The tensile test implemented with tensile samples cut from the same material by these three methods, it was observed that the strength values of the samples changed by about 8% in tensile strength depending on the cutting process. The hardness of the cut surfaces in plasma arc cutting increased from 150 HV to 230 HV for S235JR material. For this reason, it is difficult to perform machining operations after plasma cutting. The hardness value reached after laser beam cutting is 185 HV. Plasma arc cutting is more cost-effective than laser beam cutting. 1-3° vertical inclination (conicity) occurs on the cut surface in plasma arc cutting, while this inclination almost does not occur in laser cutting. In plasma cutting benches, cutting is done with oxygen, and in cutting with oxygen, the taper is seen in a small amount.

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8

Li, Shu Juan, Yong Ke Hu, Xue Jiang, and Juan Du. "Experimental Study on Cryogenic Cutting of High-Strength Steel with Liquid Nitrogen Cooling." Advanced Materials Research 328-330 (September 2011): 470–73. http://dx.doi.org/10.4028/www.scientific.net/amr.328-330.470.

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As a modern manufacturing technology, cryogenic cutting technology is one of effective ways to improve machining efficiency of hard-cutting materials.With typical hard-cutting materials 35CrMnSiA and 45CrNiMoV high-strength steel as the research object, the comparison experiment between cryogenic cutting and dry cutting of two kinds of high-strength steels was made in this paper. In the changing cutting speed conditions, the cutting force and the surface roughness of two kinds of cutting were measured in this experiment.By changing the length of cutting stroke, the cutter wear of two kinds of cutting was measured, and a comparison of chip-breaking effects was made in the experiment.The experimental results indicate that the cutting force, surface roughness, and tool wear in cutting 35CrMnSiA and 45CrNiMoV high-strength steel under cryogenic condition are reduced, and chip-breaking effect of cryogenic cutting is improved. This may be attributed mainly to improve the machinability of higth-strength steel.

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9

Huang, Wei Lei, and Gui Cheng Wang. "Strength of Screw Thread in Vibration Tapping." Advanced Materials Research 443-444 (January 2012): 678–83. http://dx.doi.org/10.4028/www.scientific.net/amr.443-444.678.

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Screw thread connection is a common way of detachable connection. The invalidation of screw thread connection will lead to mechanical failure or even retirement. Vibration tapping is essentially a kind of high-energy impact cutting which increases the rigidity of the tool. Composite vibration tapping simultaneously with repeated cutting action reduces the surface recovery of plastic materials and enhances metal cutting rate. Theoretical study and experimental results show that vibration tapping improves the metal cutting rates, enhances the machining accuracy and makes screw thread connection assembly easier. At the same time, vibration tapping process does not reduce the strength of screw thread. As the screw thread can be more uniformed cut at different depths, vibration tapping enhances the strength of screw thread slightly.

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10

Saito, Fuminori, Itsuo Nishiyama, and Toshio Hyodo. "Cutting strength — A new indicator for the mechanical strength of materials." Materials Letters 66, no. 1 (January 2012): 144–46. http://dx.doi.org/10.1016/j.matlet.2011.02.027.

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11

Qiu, Kun Xian, Ya Xing Bie, Sheng Qin, Qing Long An, and Ming Chen. "A Study of Cutting Force and Force Coefficients in Orthogonal Cutting of High-Strength CFRP T700 Laminates." Key Engineering Materials 693 (May 2016): 704–9. http://dx.doi.org/10.4028/www.scientific.net/kem.693.704.

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High strength carbon fiber reinforced polymers (CFRP) with unidirectional laminate structure have gradually developed into major materials in load-bearing aerospace components, and the cutting demand of CFRP is increasing. In this work, orthogonal cutting tests were conducted on T700 high-strength CFRP laminates to get the mechanistic force model of special cutting tools. Also cutting force coefficients were obtained when cutting T700 high-strength CFRP laminates under different fiber orientations. Experimental results showed that the lowest cutting force was obtained when fiber orientation was between 120° and 150°.

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12

Guo, You Dan. "Wear Rule of TiAlN Coated Cutting Tool when Milling Material with High Hardness at High Speed." Key Engineering Materials 458 (December 2010): 106–12. http://dx.doi.org/10.4028/www.scientific.net/kem.458.106.

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As a new cutting tool, TiAlN coated cutting tool shows incomparable excellent performance in milling material with high hardness and high strength at high speed. The study shows that TiAlN has its unique cutting characteristics and rule in milling materials with high hardness and high strength in high speed under different milling conditions. This study shall provide reference for TiAlN coated cutting tool to mill materials with high hardness and high strength through the study on the wear rule of TiAlN coated cutting tool.

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13

Bai, Long, Tao Wang, Xi Bin Wang, and Jian Jun Chen. "Cutting Force Prediction Model of 34CrNiMo6 High Strength Steel Using Statistical Method." Applied Mechanics and Materials 148-149 (December 2011): 374–79. http://dx.doi.org/10.4028/www.scientific.net/amm.148-149.374.

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The present paper demonstrates a study of the impact of cutting condition on turning high strength steel 34CrNiMo6. Based on Taguchi method, a plan of experiments was performed with ceramic cutting insert. The first and second cutting force equations are developed through the response surface methodology (RSM) to investigate the effect of input cutting parameters (cutting speed, feed rate and depth) on cutting force. In term of input parameters, the cutting force contours are showed and the analysis of the predicted models is performed with aid of the statistical software package. In addition, the separate influence of individual cutting parameter and the interaction between these factors are also discussed in this study. In general, the results obtained from the mathematical model agree well with the experimental data.

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14

Rowiński, Sławomir. "Effect of Steel-Cutting Technology on Fatigue Strength of Steel Structures: Tests and Analyses." Materials 14, no. 20 (October 15, 2021): 6097. http://dx.doi.org/10.3390/ma14206097.

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This paper presents the results of comparative fatigue tests carried out on steel S355J2N specimens cut out using different cutting methods, i.e., plasma cutting, water jet cutting, and oxyacetylene cutting. All the specimens were subjected to cyclic loading from which appropriate S-N curves were obtained. Furthermore, face-of-cut hardness and roughness measurements were carried out to determine the effect of the cutting method on the fatigue strength of the tested steel. The fatigue strength results were compared with the standard S-N fatigue curves. The fatigue strength of the specimens cut out with oxyacetylene was found to be higher than that of the specimens cut out with plasma even though the surface roughness after cutting with plasma was smaller than in the case of the other cutting technology. This was due to the significant effect of material hardening in the heat-affected zones. The test results indicate that, in comparison with the effect of the cutting technology, the surface condition of the specimens has a relatively small effect on their fatigue strength.

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15

Liu, Xian Li, Cai Xu Yue, Ming Ming Yu, Jia Yi Zhang, and Ming Yang Wu. "FEM on Constitutive Equation of High Strength Stress Steel GCr15." Advanced Materials Research 500 (April 2012): 569–73. http://dx.doi.org/10.4028/www.scientific.net/amr.500.569.

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Accuracy of cutting simulation model mostly depends on whether its material constitutive equation describes workpiece physical property under cutting state. It is necessary to research on the constitutive properties of cutting material in the high strain state of temperature. In this paper high strength steel GCr15 is used as a research object under the high speed cutting state. By FEM Johnson-cook constitutive model in Hopkinson Experiment is simulated, and the sensitivity of constant on constitutive model is also analyzed. Also influence of temperature on workpiece material stress and strain is revealed. The result provides reference for Johnson-cook model parameters of high strength steel GCr15, and it provides theory basis of material properties analysis in cutting state as well.

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16

Kuehny, Jeff S., and Patricia Branch. "Poinsettia Stem Strength." HortScience 32, no. 3 (June 1997): 484A—484. http://dx.doi.org/10.21273/hortsci.32.3.484a.

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Lateral branches of poinsettia tend to break from the main stem as plants reach maturity. The cause of poor stem strength is not known; however, suggested factors implicated in poor stem strength are: rate of nitrogen fertilizer used, type of plant growth regulator used, crowding of plants, or stem diameter of the cutting. Four different experiments were conducted to determine if these factors affected stem strength of poinsettia. Experiment 1: `Freedom Red', `Success', `V-17 Angelika Red', `Red Sails', `Nutcracker Red', `Cortez', `Maren', and `Red Splendor' poinsettia were fertilized with 20N–1P0–20K at 75, 75/125, 125/200, or 200 ppm N drip fertigation with zero leachate. Experiment 2: Three plant growth regulators were applied to `Pearl' and `Jolly Red' poinsettias. Experiment 3: `Freedom Red' plants were grown in a 625, 900, 1225, or 1600 cm2 area. Experiment 4: Rooted `Freedom Red' cuttings with stem diameters of 4.5, 5.5, 6.5, or 7.5 mm were used. A force meter was used to determine the strength of each lateral on the main stem of the six replications in each experiment. The lower laterals had the least stem strength and the top lateral had the highest stem strength for all treatments in all experiments. The stem strengths of some cultivars in experiment 1 were stronger at the lower fertilizer rates. Type of plant growth regulator had no significant affect on most poinsettia cultivars. The stem strengths of poinsettias in experiments 3 and 4 varied according to which lateral was measured.

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17

Harada, Yoshihisa, Kyohei Kawai, Takayuki Suzuki, and Tokuo Teramoto. "Evaluation of Cutting Process on the Tensile and Fatigue Strength of CFRP Composites." Materials Science Forum 706-709 (January 2012): 649–54. http://dx.doi.org/10.4028/www.scientific.net/msf.706-709.649.

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Carbon fiber-reinforced plastics (CFRP) composite is most attractive materials to reduce the weight of transportations. To increase the production volume and the efficiency in the field of CFRP component, fast, highly precise and cost-efficient technologies are required. Although laser cutting meets these requirements, it is not used because of insufficient knowledge about the effect of thermal damage on the material behavior. In this study, the effect of several cutting processes on the static tensile strength and the fatigue strength was evaluated for CFRP consisting of thermoset resin matrix and carbon fibers. The CFRP was cut using two different-type of lasers; a CO2 gas laser and a single-mode fiber laser, an abrasive water-jet and a conventional mechanical tool. The mechanical cutting specimen produced a cut of high quality. The water-jet cutting specimen showed a moderate quality though was seen a trace of abrasive grain. While, the laser cutting specimens clearly showed a heat-affected zone (HAZ). The static tensile strength and the fatigue strength by laser cutting specimens clearly decreased in comparison with mechanical or water-jet cutting specimen. The laser cutting specimen exhibited a linear dependency of the tensile strength on the HAZ, indicating that the main effect resulted from thermal destruction of CFRP within the HAZ.

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18

Harada, Yoshihisa, Mayu Muramatsu, Takayuki Suzuki, Michiteru Nishino, and Hiroyuki Niino. "Influence of Laser Process on Mechanical Behavior during Cutting of Carbon Fiber Reinforced Plastic Composites." Materials Science Forum 783-786 (May 2014): 1518–23. http://dx.doi.org/10.4028/www.scientific.net/msf.783-786.1518.

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Carbon fiber-reinforced plastics (CFRP) composite is most attractive materials to reduce the weight of transportations. To increase the production volume and the efficiency in the field of CFRP component, fast, highly precise and cost-efficient technologies are required. Although laser cutting meets these requirements, it is not used because of insufficient knowledge about the effect of thermal damage on the material behavior. In this study, the effect of several cutting processes on the static tensile strength and the fatigue strength was evaluated for CFRP consisting of thermoset resin matrix and carbon fibers. The CFRP was cut using two different-type of lasers; a CO2 gas laser and single-mode fiber lasers, and a conventional mechanical tool. The mechanical cutting specimen produced a cut of high quality. While, the laser cutting specimens clearly showed a heat-affected zone (HAZ). The static tensile strength and the fatigue strength by laser cutting specimens clearly decreased in comparison with mechanical cutting specimen. The laser cutting specimen exhibited a linear dependency of the tensile strength on the HAZ, indicating that the main effect resulted from thermal destruction of CFRP within the HAZ.

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19

Pawade, Raju, Avinash Khadtare, Dhanashree Dhumal, and Vishal Wankhede. "Machinability Assessment in High Speed Turning of High Strength Temperature Resistant Superalloys." Journal of Advanced Manufacturing Systems 18, no. 04 (November 19, 2019): 595–623. http://dx.doi.org/10.1142/s021968671950032x.

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The paper discusses the effect of cutting parameters and cutting tool material on chip compression ratio, cutting forces and surface roughness in turning of high strength temperature resistant superalloys (HSTR). The experiments were performed in dry cutting environment on precision CNC lathe with fixed depth of cut of 0.5[Formula: see text]mm. Analytical model is developed to determine chip segmentation frequency, shear angle and shear strain and it is correlated with the machining parameters. The machinability of the selected superalloys is assessed in terms of cutting force, chip compression ratio and surface roughness. It is found from the experimental analysis cutting force magnitude is less at higher cutting speed for all the superalloys. Chip compression ratio is found maximum in case of Inconel 718 due to precipitation hardening of alloy and followed by Inconel 600 and Inconel 800. The chip segmentation frequency is high at lower cutting speed for Inconel 600 due significant strain hardening. Serrated chips are produced during machining of three selected superalloys and it is found that serrated tooth spacing decreases with cutting speed. Shear plane angle increases on cutting speed increases which effect tool workpiece contact length during machining resulted thin, short and snarled chips was produced. From analytical modeling it shows that shear strain decreases with cutting speed which indicate that at higher cutting speed material deformed elastically than plastically. The effect of cutting tool material is observed on the surface roughness. The better surface finish is obtained with coated carbide inserts as compared to ceramic inserts for all the selected superalloys. However, Inconel 800 shows higher surface roughness due to combination of (Ni–Cr–Fe) alloying element which is responsible for carburization of surface layer during machining.

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20

Rodolfo, Giselle R., Clovis A. Souza, Luiz C. Gutkoski, and Deivid L. V. Stefen. "Technological Quality of Dual-purpose Wheat Submitted to Successive Defoliations." Journal of Agricultural Science 12, no. 1 (December 15, 2019): 95. http://dx.doi.org/10.5539/jas.v12n1p95.

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Defoliation may interfere in the sink-source relationship and influence grain production and the respective technological quality of wheat flour, particularly in cultivars with potential as forage and in subsequent grain production. This study aimed to determine the effects of plant cutting heights and number of cuttings on the technological wheat flour quality of BRS Umbu and BRS Tarumã cultivars. A completely randomized design with four repetitions was used and treatments consisted of a combination of cutting heights (20 and 30 cm) and number of cuttings (no cutting, 1, 2 and 3 cuttings), resulting in the following treatments: 20/1, 20/2, 20/3 30/1, 30/2, 30/3 and controls with no cuttings. Hectoliter weight, grain crude protein, tenacity: extensibility ratio, gluten strength, falling number and wet gluten were measured. Regardless of the cutting height used, and after defoliation, the variables exhibited higher values than in non-defoliated plants, with protein content increasing by 6 and 11.3% for the BRS Tarumã and BRS Umbu cultivars, respectively. As such, it can be inferred that defoliation does not negatively affect the technological quality of wheat flour grown in a dual-purpose system.

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21

Jiang, Jun Sheng, Chang Chun Wang, Bing Qiang Liu, and Chuan Zhen Huang. "Preparation and Performance of TiC Whisker Toughening Alumina Ceramic Cutting Tool Composite." Advanced Materials Research 295-297 (July 2011): 98–102. http://dx.doi.org/10.4028/www.scientific.net/amr.295-297.98.

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A TiC whisker toughening Al2O3-based ceramic cutting tool composite named ATW30 was developed by a two-step in situ synthesis technology. The fracture toughness, flexure strength and Vickers hardness of the composite were 7.63MPa•m1/2, 800MPa and 19.5GPa, respectively. Compared to a (W, Ti)C particle strengthening Al2O3-based ceramic cutting tool composite named SG4, ATW30 was with lower flexure strength and Vickers hardness but much higher flexure strength, and therefore obviously higher wear resistance at either lower or higher cutting speed. The dominant wear mechanism on the flank face of ATW30 is abrasive wear at lower cutting speed and adhesive wear at higher cutting speed. Because of the appearance of the adhesive wear, the wear resistance of ATW30 at higher cutting speed is lower than that of itself at lower cutting speed.

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22

Lipiäinen, Kalle, Antti Kaijalainen, Antti Ahola, and Timo Björk. "Fatigue strength assessment of cut edges considering material strength and cutting quality." International Journal of Fatigue 149 (August 2021): 106263. http://dx.doi.org/10.1016/j.ijfatigue.2021.106263.

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23

Zhang, Hui, Changsheng Guo, and Changming Zhang. "Effect of drilling parameters on drilling temperature and force of ultra-high strength steel." Thermal Science 23, no. 5 Part A (2019): 2577–84. http://dx.doi.org/10.2298/tsci181125146z.

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Aiming at 300M hard-to-machine material, the effects of different drilling parameters (spindle speed, n, feed, f, bit diameter, d) on drilling temperature, torque and axial force were analyzed and studied by orthogonal test method. The prediction models of drilling temperature, torque, and drilling axial force are constructed. The results show that the cutting temperature and stress are mainly distributed on the cross edge of the bit in the initial stage of 300 m steel drilling. With the continuous drilling process of 300M hard-to-machine materials, the cutting temperature and stress generated gradually transfer to the main cutting edge of the bit and extend along the main cutting edge. With the increase of bit diameter, the cutting axial force, torque and cutting temperature decrease, but the cutting axial force, torque and cutting temperature decrease. With the increase of spindle speed and feed, the cutting temperature is increasing. According to the results of orthogonal experiment, the cutting axial force is established by least square method. The predictive models of force, torque, and cutting temperature are validated by the experimental model coefficients and model coefficients. The results show that feed, f, has the greatest influence on cutting axial force, torque, and cutting temperature.

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24

ISHII, Daisuke, Masaki OMIYA, and Hiroaki HOSHINO. "PS50 Evaluation of interfacial strength with cutting principle." Proceedings of the Materials and Mechanics Conference 2010 (2010): 157–59. http://dx.doi.org/10.1299/jsmemm.2010.157.

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25

Grigor’ev, S. N., V. I. Myachenkov, and V. V. Kuzin. "Automated thermal-strength calculations of ceramic cutting plates." Russian Engineering Research 31, no. 11 (November 2011): 1060–66. http://dx.doi.org/10.3103/s1068798x11110086.

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26

Lyukshin, V. S., A. V. Barsuk, and R. R. Fazleev. "Cutting capacity and strength of single grinding grains." IOP Conference Series: Materials Science and Engineering 91 (September 14, 2015): 012047. http://dx.doi.org/10.1088/1757-899x/91/1/012047.

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27

Yakou, Takao. "Temperature Dependence of Bending Strength of Cutting Wheels." Transactions of the Japan Society of Mechanical Engineers Series C 59, no. 564 (1993): 2558–63. http://dx.doi.org/10.1299/kikaic.59.2558.

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28

Patel, Nimesh, Lance Wilson, and Guy Wansbrough. "Does cutting a plaster window weaken its strength?" Injury 48, no. 3 (March 2017): 648–52. http://dx.doi.org/10.1016/j.injury.2017.01.030.

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29

Zolotov, A. S., S. Kh Isokov, and A. Kh Isokova. "The Optimal Surgical Needle for Tendon Suture: Cutting Edge or Reverse Cutting Edge?" Traumatology and Orthopedics of Russia 27, no. 2 (July 13, 2021): 75–80. http://dx.doi.org/10.21823/2311-2905-2021-27-2-75-80.

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Background. Achieving a durable connection between the lacerated tendon ends is difficult. The outcome of treatment depends on many factors. Several authors consider the properties of the surgical needle used for suturing the tendon to be important. The aim of the study— to compare the strength of the tendon suture applied with the conventional cutting edge and reverse cutting edge surgical needles in the experiment.Materials and Methods.We used porcine tendons for the experiment. The tendon fragments were divided into 2 groups of 20 tendons each. On all 40 tendons, the same type of “injury” of the tendon was simulated — using a scalpel. In the first group, the interrupted suture of the tendon was applied with a cutting edge surgical needle, in the second group — reverse cutting edge. Laboratory tests of the tendon sutures strength were performed on the improvised stand.Results.In the first (suture made with a cutting needle edge), diastasis of 2 mm was determined at an average load of 1219.5 g (m = ±76.56, where «m» is the representativeness error). Complete suture failure occurred at an average load of 1770.8 g (m = ±100.02). In this group, the thread rupture was not recorded. In the second group (a suture made with a reverse cutting edge needle), diastasis occurs with an average load of 1754.75 g (m = ±77.32). Complete suture failure occurred at an average load of 2571.25 (at m= ± 103.78). In three cases, the thread ruptured. In the second group (reverse cutting edge needle), the tendon suture strength was statistically significantly higher than in the first group. Conclusion. The tendon suture strength depends on the surgical needle properties. In tendons reconstruction the reverse cutting edge needle use is more preferable compared to the conventional cutting edge needle use.

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30

Sotova, E. S., and M. N. Lazareva. "Increasing of cutting efficiency of heat-treated steel through the application of cutting tools of high-strength composite ceramic with coating E. S. Sotova, M. N. Lazareva." Izvestiya MGTU MAMI 6, no. 2-2 (March 20, 2012): 184–89. http://dx.doi.org/10.17816/2074-0530-68500.

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In the paper there is investigated the cutting tool properties of high-strength composite ceramics with multi-coated cutting hardened steel. Mathematical models of cutting are obtained. They establish the dependence of the wear and tear on the back of the instrument, roughness of the machined surface of the parts, the tangent component of the cutting forces, as well as cutting power on the modes of turning. A problem of cutting tools modes optimization is made of high-strength composite ceramics. It is established that the application of the multi-functional coatings on ceramic cutting tool allows you to increase the efficiency of processing.

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A. Moskvitin, Alexey, Lyubov A. Gorovenko, Evgenia V. Kovriga, Olga A. Sumskaya, and Akop S. Abelyan. "Simulation of Physical and Mechanical Properties to Increase the Strength of the Cutting Ceramics." International Journal of Engineering & Technology 7, no. 4.38 (December 3, 2018): 1193. http://dx.doi.org/10.14419/ijet.v7i4.38.27760.

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According to studies [1], cutting tools with plates made of cutting ceramics alloyed with carbide-forming elements have higher heat resistance than standard plates made of cutting ceramics in the delivery stage, since their properties do not meet the requirements. Cutting ceramics with the addition of a nickel alloying element to its main standard fraction has a low heat resistance. With the addition of the manganese alloying element, heat resistance and corrosion resistance and wear resistance of cutting tools equipped with cutting ceramics are reduced. The main alloying element is chromium, which, depending on its quantity, indicates increased or high heat resistance in cutting ceramics.

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Sun, Qin, Jinsheng Zhang, Heng Zhang, and Peiyu Dong. "Force and segment wear in various granites cutting by diamond frame saw." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 232, no. 20 (November 24, 2017): 3696–707. http://dx.doi.org/10.1177/0954406217742937.

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Influences of cutting parameters (feed rate, cutting length, and flywheel rotation speed) and stone properties (such as quartz content, uniaxial compression strength, and bending strength) on forces in various granites cutting by diamond frame saw (diamond gang saw) were studied. Feed rate ranks first in governing cutting force compared with flywheel rotation speed and cutting length. Uniaxial compression strength affects cutting forces most compared with other stone properties. The mathematical models can predict cutting forces for manufacturers and users, as well as provide a theoretical basis for improvement and optimization of stone sawing machines. Matrix tail can form during half-cycle sawing mode, which can improve the holding force of the bond to diamonds. Segments have better sawing conditions, and the main wear mode of diamond grits are whole and microfractured crystal. Slab productivity represents a 13–21 % increase, while geometrical deviation of the slab is less than 1.5 mm/m, thus reducing subsequent processing cost, such as polishing stage.

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Jun, Liu, Liu Su, Chen Zhigang, Zhou Fei, and Chang Min Suh. "Effect of Y-TZP on Mechanical Properties of Al2O3-TiB2 Ceramics." International Journal of Modern Physics B 17, no. 08n09 (April 10, 2003): 1279–84. http://dx.doi.org/10.1142/s0217979203018879.

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The effect of Y-TZP additive on the mechanical properties of Al2O3-TiB2 ceramics was investigated. The results indicate that Y-TZP additive can enhance the flexure strength and fracture toughness of Al2O3-TiB2 ceramics, but has little effect on their hardness. The maximum bending strength of Al2O3-TiB2 and Al2O3-TiB2-Y-TZP ceramics are at 20vol% TiB2 content. The maximum fracture toughness for two kinds of ceramics all are at 30vol% TiB2 content. The bending strength and fracture toughness as well as impact resistance of Al2O3-TiB2-Y-TZP ceramics are higher than those of Al2O3-TiB2 ceramics. The cutting behaviors of two kinds of ceramics are satisfactory. When the ceramic cutting tools are applied to continuous cutting, the wear resistance of cutting tools increases as an increase in TiB2 content. But when they are applied to intermittent cutting, the serving life of ceramic cutting tools is mainly governed by their fracture toughness, The mainly failure mechanism of intermittent cutting is micro-chipping.

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Furmanov, D. V., V. S. Chizhov, and N. E. Lysakov. "EXPERIMENTAL DETERMINATION OF CUTTING RESISTANCE STRENGTH AT ASPHALT CONCRETE DESTRUCTION WITH A SINGLE CUTTING ELEMENT." Russian Automobile and Highway Industry Journal 17, no. 2 (May 25, 2020): 196–207. http://dx.doi.org/10.26518/2071-7296-2020-17-2-196-207.

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Introduction. The article is devoted to the research results on cutting resistance of a road asphalt concrete in the process of the removal of worn coatings by the working elements of milling machines. The relevance of the work is due to the occurring of new brands of asphalt concrete alongside with the use of new types of cutting elements, for which it is difficult to predict the load on the working element when solving the problems of designing new ones and substantiation the operating conditions of the current machines. The purpose. The objective of the study of the interaction of a single cutting element of a road mill with a material at the best fit of speed and geometric parameters of a cutting process with real machines is solved.Materials and methods. The experimental work was carried out by determining the tangential component of a cutting resistance strength, as well as the work of this strength on a pendulum desk using a unit recording equipment. Four different types of asphalt concrete were being destroyed. A two-factor experiment was conducted for each type of the material. The tangential components of a cutting resistance strength depending on the thickness of the cut chips and the temperature of the material were evaluated.Results. As a result of the experiment, the data were obtained that make it possible to reasonably determine the loads on the teeth of road milling machines, to determine a power capacity of the process and the drive power of the working element. It was found that the growth of the tangential component to a cutting resistance strength occurs quite intensively alongside with an increase in the thickness of the cut chips, only at the initial stages of the penetration of the cutter. With an increase in the thickness of the cut chips, the growth of the tangential component to a cutting resistance strength does not occur so intensively. In all cases the temperature of the material has an impact on the value of a cutting resistance strength, but this effect is less significant for asphalt concrete with a higher crushed stone content.Discussion and conclusion. The obtained data make it possible not only to determine the tangential strength to cutting resistance on the cutting elements of the working element of the milling machine, but also to find rational ways to place the cutting elements on the working element, as well as to determine the rational operation conditions of the current and new machines. This is possible when using the results in a mathematical model that describes the operation of the milling working element as a whole.Financial transparency: the authors have no financial interest in the presented materials or methods. There is no conflict of interest.

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Lu, Zhenguo, Qingliang Zeng, Zhihai Liu, Guanshun Gao, and Peisi Zhong. "Research on Cutting Characteristics of Rock Plate with Two Sides Fixed and Two Sides Free." Advances in Materials Science and Engineering 2020 (October 23, 2020): 1–15. http://dx.doi.org/10.1155/2020/4198010.

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Conical pick wear is an urgent problem in the roadway excavation caused by hard rock difficult to break. The traditional method of increasing cutting power to improve cutting performance of conical pick significantly increases pick wear. In the paper, a saw blade and conical pick combined cutting method is proposed based on increased free surface. To research the fracture morphology and cutting force of rock plate, theoretical, numerical, and experimental methods are used. By theoretical research, the bending mechanical model of rock plate bending is established. The cutting position and the junction between the free sides and fixed sides are preferentially broken. A numerical model combining the erosion and damage constitutive model is built, and the cutting process of rock plate was presented. According to rock plate experiment, the peak cutting force increases with the increasing uniaxial compressive strength, thickness of rock plate, and cutting depth of conical pick and decreases with the increasing width and height of rock plate. Exponential relationships exist between peak cutting force and thickness, width and height of rock plate, and cutting depth of conical pick. Linear relationship exists between peak cutting force and uniaxial compressive strength. The size of rock fragments increases with uniaxial compressive strength, width, and height of rock plate.

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Wen, Quan, Jintao Hu, and Zewei Yuan. "Sub-Fiber Scale Precision Dicing of Aramid Fiber-Reinforced Plastic Composites." Machines 10, no. 5 (May 3, 2022): 334. http://dx.doi.org/10.3390/machines10050334.

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Aramid fiber-reinforced plastic (AFRP) composites are widely used in aerospace, rail transit, marine and military industries, due to their high specific strength, high impact resistance, fatigue resistance and excellent designable properties. In order to meet different application requirements, cutting processes need to be carried out, such as window opening, edge cutting and slit cutting. However, the characteristics of high tensile strength and toughness, low interlaminar strength, non-uniformity and anisotropy make AFRP composites a difficult-to-machine material. They are prone to produce rough cutting surfaces and cutting damages including burr, wire drawing, delamination, resin burn, material flanging, etc. To solve this problem, the ultra-thin diamond dicing blade was used for high-speed cutting of AFRP composites in sub-fiber scale in this research. The influence of process parameters on cutting force, cutting temperature, maximum spindle current, tool wear and cutting surface quality were investigated by establishing the cutting force model, L16(45) orthogonal experiment, single factor experiment, range analysis and variance analysis. The theoretical and experimental results show that cutting AFRP composites with ultra-thin diamond dicing blade can obtain smooth surfaces without common cutting damages. When the cutting speed is 91.11 m/s (spindle speed n = 30,000 r/min), the cutting depth is 0.2 mm and the feed speed is 5 mm/s, the surface roughness Ra can be as low as 32 nm, which realize the precision cutting of AFRP composites.

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Wang, Lin Lin, Li Jiao, Zhi Wen Luo, and Liang Jun Wei. "Experimental Investigation of Surface Integrity in Turning of 58SiMn High-Strength Steel." Applied Mechanics and Materials 543-547 (March 2014): 3759–63. http://dx.doi.org/10.4028/www.scientific.net/amm.543-547.3759.

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In order to investigate the impact of cutting parameters on surface integrity when high-speed turning 58SiMn without cutting fluid, three-factor three-level orthogonal experiments and single factor experiments based on cutting speed and feed rate are employed, and an empirical model is established. The results of analysis of variance (ANOVA) revealed that feed rate is the dominant factor affecting the surface roughness. With the increase of cutting speed and feed rate, residual tensile stress on the surface becomes larger. Along the depth, micro hardness first decreases and then increases.

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Kutuniva, Kari, Jussi A. Karjalainen, and Kari Mäntyjärvi. "Effect of Convex Sheared Punch Geometry on Cutting Force of Ultra-High-Strength Steel." Key Engineering Materials 504-506 (February 2012): 1359–64. http://dx.doi.org/10.4028/www.scientific.net/kem.504-506.1359.

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Extremely high strength of the ultra-high-strength steels leads to increased load factors on the tooling machines and punching tools. This experimental study examines how much convex punch geometry affects cutting forces when punching ultra-high-strength steels. Tools used in punching tests were four different convex sheared rooftop punches and one conventional flat end punch, to which rooftop punches were compared to. The material in punching tests was ultra-high-strength steel Ruukki Optim 960 QC, with a thickness of 4 mm. The test material in punching tests was sheared with rooftop punches and a flat end punch and occurred cutting forces were measured. The qualities of punched holes were evaluated visually and the roundness measurements were also performed. The results show that the cutting forces of Optim 960 QC can be reduced radically with optimal convex punch geometry. With using 14-degree shear angle of the punch end, the cutting forces reduced up to 57 % compared to forces of the conventional flat end tool. However, largest tested shear angles caused several negative effects on the cutting quality of the holes and therefore they are not suitable in all applications. Punching tests proved that the cutting clearance had no appreciable effect on cutting forces when punching ultra-high-strength steel. Instead there was a noticeable effect on the quality of the punched hole, especially when large shear angles were used.

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Gent, A. N., S.-M. Lai, C. Nah, and Chi Wang. "Viscoelastic Effects in Cutting and Tearing Rubber." Rubber Chemistry and Technology 67, no. 4 (September 1, 1994): 610–18. http://dx.doi.org/10.5254/1.3538696.

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Abstract Measurements of cutting resistance have been made for a crosslinked styrene—butadiene copolymer over a wide range of cutting speeds and temperatures. A characteristic fracture energy was determined using the procedure of Lake and Yeoh. A lower limit, about 150 J/m2, was obtained at low cutting speeds. This value is significantly higher than the threshold tear strength, about 30 J/m2, due to roughness of the blade tip. The tear resistance increased dramatically as the test temperature was lowered, by a factor of over 1000X, whereas the cutting resistance remained largely unchanged over a considerable temperature range. Much of the enhanced tear resistance at low temperatures is therefore attributed to increasing roughness of the tear tip, the intrinsic strength remaining approximately constant. As the tear strength followed a WLF temperature dependence closely, roughening of the tear tip is associated with viscoelastic effects. Higher cutting resistance was shown by a sulfur vulcanizate, but carbon black had no additional effect. Variations in tensile strength with rate of elongation and temperature are discussed in terms of tearing from an initial edge flaw.

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Haddad, Fares, Christophe Lescalier, Jean-Edouard Desaigues, Anne Bomont-Arzur, and Olivier Bomont. "Metallurgical Analysis of Chip Forming Process when Machining High Strength Bainitic Steels." Journal of Manufacturing and Materials Processing 3, no. 1 (January 19, 2019): 10. http://dx.doi.org/10.3390/jmmp3010010.

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In the following work, we propose a metallurgical approach to the chip formation process. We focus on a turning application of high strength steel in which chips are produced by adiabatic shear bands that generate cutting force signals with high frequency components. A spectral analysis of these signals is applied and highlights peaks above 4 kHz depending on the cutting conditions. A microscopic analysis on the chip sections provided data on chip breaking and serration mechanisms. Shear band spacing and excitation frequency of the whole cutting system were calculated and gave a good correlation with cutting forces spectra.

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Long, Zhen Hai, Xi Bin Wang, and Wen Xiang Zhao. "Study on Surface Integrity of an Ultra-High Strength Alloy in HSC Process." Materials Science Forum 532-533 (December 2006): 241–44. http://dx.doi.org/10.4028/www.scientific.net/msf.532-533.241.

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Aiming to study the surface integrity of an ultra-high strength alloy in high speed milling process, 2K factorial design experiments were conducted to explore the effects of cutting parameters, such as cutting velocity, feed rate and depth of cut, on microstructure, microhardness and residual stress in the sub-surface layer. The following conclusions could be drawn from this paper within the range of cutting conditions: The cutting parameters could significantly influence the microstructure and microhardness in the surface and sub-surface layers, and the original fine martensite of the surface and sub-surface layer might be transformed into the over-tempered martensite, under-tempered martensite, secondary troostite, and tempered sorbite; Compressive residual stress distributions with different maximum stress values in the sub-surface layer of machined surfaces could emerge in high speed cutting process; the properly arranged cutting condition could achieve ideal surface characteristics and surface integrity.

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Markauskas, Edgaras, Laimis Zubauskas, Bogdan Voisiat, and Paulius Gečys. "Efficient Water-Assisted Glass Cutting with 355 nm Picosecond Laser Pulses." Micromachines 13, no. 5 (May 18, 2022): 785. http://dx.doi.org/10.3390/mi13050785.

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In this study, the cutting of borosilicate glass plates in ambient air and water with a 355 nm wavelength picosecond laser was carried out. Low (2.1–2.75 W) and high (15.5 W) average laser power cutting regimes were studied. Thorough attention was paid to the effect of the hatch distance on the cutting quality and characteristic strength of glass strips cut in both environments. At optimal cutting parameters, ablation efficiency and cutting rates were the highest but cut sidewalls were covered with periodically recurring ridges. Transition to smaller hatch values improved the cut sidewall quality by suppressing the ridge formation, but negatively affected the ablation efficiency and overall strength of glass strips. Glass strips cut in water in the low-laser-power regime had the highest characteristic strength of 117.6 and 107.3 MPa for the front and back sides, respectively. Cutting in a high-laser-power regime was only carried out in water. At 15.5 W, the ablation efficiency and effective cutting speed per incident laser power increased by 16% and 22%, respectively, compared with cutting in water in a low-laser-power regime.

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43

Yan, Li, and Hou Li Fu. "Research of Cutting Slop Process by Strength Reduction FDM." Advanced Materials Research 962-965 (June 2014): 868–72. http://dx.doi.org/10.4028/www.scientific.net/amr.962-965.868.

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To the problem of slope stability analysis and slope-cutting of rock slope, the traditional method Limit Equilibrium Method has many shortcomings as assuming the position and shape of the slip plane first. However, with the new theory of Strength Reduction Method, the problem can be easily solved. By selecting the appropriate criterion of instability and failure of sliding surface of slope, the Strength Reduction Method simulates the gradual development process of slope-cutting. By this method, we can simulate the failure process of slope and obtain the safety factors and slipping surface. This paper put forward the process of cutting slop by Strength Reduction FDM (Finite Difference Method) which had new insights into the choice of instability criterion, flow rule and slip plane.

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Liu, Gang, De Sen Mu, Shi Xi Duan, and De Chao Song. "Design Parameters Optimization of Cutting Head of Cantilever Roadheader Based on Genetic Algorithm." Applied Mechanics and Materials 215-216 (November 2012): 193–96. http://dx.doi.org/10.4028/www.scientific.net/amm.215-216.193.

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For hard rocks whose protodyakonov scale of hardness f are greater than 8, research on the optimization design of cutting head of cantilever roadheader. Optimization model of the cutting head was established, in this model, the objective function was established based on dust mount, energy consumption and production efficiency. The design variables contain cutting head structural and kinetic parameters, the constraints are determined in accordance with working condition and practical experience. Cutting head parameters are optimized with parameters change related to rock strength, using genetic algorithm in Matlab7.0. A variety of cutting parameters optimization results related to rock strength are of great significance for the structural design of the cutting head and selection of kinetic parameters.

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Al-Zboon, Kamel, and Talal Masoud. "Recycling of Stone Cutting Waste In the Construction Sector: A Review." Journal of Solid Waste Technology and Management 47, no. 1 (February 1, 2021): 56–60. http://dx.doi.org/10.5276/jswtm/2021.56.

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Huge amounts of stone cutting waste are generated annually posing a heavy environmental load on nature and resulting in economic challenge to the plants' owners. The conducted researches in this field showed that stone, marble and granite waste could be reused in many applications. This paper aims to investigate the possible application of stone cutting waste in the construction sector. Review process includes investigation of the conducted researches, outcomes of the performed projects, and the impact of this waste on the characteristics of concrete compressive strength, flexural strength, splitting strength, concrete workability, bricks strength, terrazzo tile strength and soil properties. The results revealed that at suitable substitution ratio, this waste can increase the compressive strength of concrete up to 21%, the flexural strength by 33% and splitting strength by 4.3%. In contrast, the compressive strength of bricks decreased by up to 67% at replacement ratio of 100%, and the transverse strength of tiles decreased up to 18% at replacement ratio of 50%. Replacement of soil with stone cutting waste resulted in an improvement in the characteristics of cohesive and sandy soil. Concrete workability decreased significantly with replacement of normal aggregate with stone cutting waste. Such results buttressed the feasibility of reusing this material in the construction sector, which reduces the cost of storage and disposal, and creates a nonconventional income.

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Faust, James E., Elizabeth Will, and Rob Klein. "Stock Plant Environment Impacts Lateral Stem Strength of Finished Poinsettias." HortScience 33, no. 3 (June 1998): 448b—448. http://dx.doi.org/10.21273/hortsci.33.3.448b.

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Previous work indicated that the cutting source impacted lateral stem strength of the finished poinsettia. The objective of this experiment was to determine the effect of the stock plant environment on the stem strength of the harvested cuttings. Stock plants were grown in two greenhouses. The night temperature was maintained at 20 °C in both, while the day temperature was maintained at 30 or 37 °C. Two irradiance levels were maintained with each greenhouse: 50% and 75% shade cloth. Within each irradiance treatment, individual stock plants were provided 522, 929, or 1451 cm2 of bench space. Stock plants were pinched to 12 nodes, lateral shoots developed, and cuttings were harvested. The cuttings were propagated, transplanted and pinched. Lateral stem strength was quantified by dropping the finished plants from progressively greater heights and recording stem breakage. Stem strength increased as temperature increased, irradiance increased, and as stock plant density decreased. Plants grown in the lower temperature, lower irradiance level, and higher plant density experienced 34% of the lateral shoots breaking off at a 30-cm drop height, while 4% of the lateral shoots broke on the cuttings harvested from the higher temperature, higher irradiance, and lower plant density treatment.

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Nagai, Kaori, and Kazuki Shimizu. "Using a High-Power Fibre Laser to Cut Concrete." Applied Sciences 11, no. 10 (May 13, 2021): 4414. http://dx.doi.org/10.3390/app11104414.

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Concrete cutting at construction sites causes problems such as noise, vibration, and dust. In particular, during the demolition and renovation work on buildings in urban areas, protection against noise, vibration, dust, etc., is needed. Concrete cutting using a CO2 laser was investigated 20 years ago. However, this method had never used because the equipment is difficult to carry. In this study, we used a portable fibre laser, which is convenient to carry. Two types of concretes with different strengths were prepared for the experiment. High-strength concrete has never been used in similar research before. High-strength concrete is just only used for skyscrapers because of its high quality and costs. Furthermore, it has already been used for skyscrapers in Japan. It is for this reason that we chose to use it in this study. Irradiation measurements were conducted under various conditions using laser powers of 6 and 9 kW. It was confirmed that the cutting effectiveness of CO2 and fibre lasers was approximately identical for concretes with a thickness of 200 mm. Furthermore, the cutting effectiveness for the two concretes with different densities was almost the same. However, the situation after cutting was different because the vitrification of the cutting and glass formation progressed in low-density concrete and an explosion phenomenon occurred in high-density concrete, simultaneously. This study suggests that laser concrete cutting can be used as a solution when noise and dust are major problems.

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Wu, Lien-Chen, Yueh-Ying Hsieh, Fon-Yih Tsuang, Yi-Jie Kuo, and Chang-Jung Chiang. "Cutting Flute and Thread Design on Self-Tapping Pedicle Screws Influence the Insertion Torque and Pullout Strength." Applied Sciences 12, no. 4 (February 13, 2022): 1956. http://dx.doi.org/10.3390/app12041956.

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Self-tapping screws are commonly used in trauma and maxillofacial surgery and are increasingly used for pedicle screw insertions. In order to evaluate how the quantity and length of cutting flutes on self-tapping pedicle screws affect the insertion torque and pullout strength, eight different self-tapping pedicle screw designs were evaluated. All screws had a threaded length of 35 mm and featured variations in the number of leads, as well as the length and quantity of cutting flutes. Five samples of each design were inserted into pre-drilled, untapped holes (ø2.7 mm, length 35 mm) in sawbone blocks of density 20 PCF. The insertion torque and pullout strength were measured according to ASTM F543. The results showed that screws with a longer cutting flute of 9.5 mm had a lower mean maximum insertion torque than screws with shorter 2.9 mm cutting flutes. Pedicle screws with a double-lead thread design had a greater insertion torque than their single-lead counterparts, and the use of three cutting flutes produced a lower torque than two cutting flutes. The results demonstrated a greater pullout strength in screws with a single-lead thread rather than a double-lead, three cutting flutes instead of two, and a longer length for the cutting flute. In conclusion, to provide immediate stability and reduce the surgical insertion time, a single-lead, self-tapping pedicle screw incorporating three long cutting flutes is recommended because of the significantly greater pullout strength. This design could also reduce the risk of implant loosening in comparison to double-lead, self-tapping pedicle screw designs.

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49

Neugebauer, Reimund, V. Kräusel, and H. Bräunlich. "Advanced Cutting Technology in Process Chains for High Strength Steels." Advanced Materials Research 6-8 (May 2005): 817–24. http://dx.doi.org/10.4028/www.scientific.net/amr.6-8.817.

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The application of high-tensile sheet metal materials in car body construction requires the development of new production strategies for preparing sheet metal part edges where laser welding operations have to be performed. Using up this sheet materials in cutting processes for car bodies lead to higher stressing of active tool parts. To arrive the same tool life quantities as is presently the standard in the production process using conventional materials it is necessary to modify the tool designs for cutting tools, to determine well adapted tool materials and coatings, to choose modified lubricants and to optimize the surface quality of tools for cutting operations.

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50

Iqbal, Asif, Dirk Biermann, Hussein M. Ali, Juliana Zaini та Maximilian Metzger. "Investigating the impact of tool inertia on machinability of a β-titanium alloy using tool deflection and acoustic emission". Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 233, № 7 (24 вересня 2018): 1745–60. http://dx.doi.org/10.1177/0954405418802319.

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Finding sustainable ways of machining exotic materials is gaining more and more importance in the manufacturing industry. Application of advanced measuring instruments for quantifying performance measures is a crucial requirement for making machining processes viable. The presented work aims to ameliorate machining of a high-strength β-titanium alloy using information from measurements of key responses, such as cutting energy consumption, tool deflection, and tool damage. Acoustic emission data and tool’s acceleration data are utilized to work out the magnitudes of energy consumed and deflection undergone by the tool, respectively. The article focuses on quantifying the effects of tool’s inertia, strength of work material, and two cutting parameters on the aforementioned responses. A total of 54 continuous cutting experiments are performed in which a fixed volume of material per experimental run is removed. Tool deflection method helped to determine the significant effects of varying tool inertia, work material strength, and cutting speed on the machining process. Likewise, acoustic emission method highlighted the strong effects of material strength and cutting speed caused on the cutting energy consumption. The effect of feed rate is found to be significant regarding tool wear only. Finally, the tool wear data are tested for correlation against the corresponding data sets of the other two responses. It is found that both tool deflection and cutting energy possess strong uphill relationships with tool wear.

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