Journal articles: 'TENSILE PROPERTIES'

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Gao, Min, Zhengzhao Liang, Shanpo Jia, and Jiuqun Zou. "Tensile Properties and Tensile Failure Criteria of Layered Rocks." Applied Sciences 12, no. 12 (June 15, 2022): 6063. http://dx.doi.org/10.3390/app12126063.

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Rocks are less resistant to tension than to compression or shear. Tension cracks commonly initiate compression or shear failure. The mechanical behavior of layered rocks under compression has been studied extensively, whereas the tensile behavior still remains uncertain. In this paper, we study the effect of layer orientation on the strength and failure patterns of layered rocks under direct and indirect tension through experimental and numerical testing (RFPA2D: numerical software of Rock Failure Process Analysis). The results suggest that the dip angle of the bedding planes significantly affects the tensile strength, failure patterns, and progressive deformation of layered rocks. The failure modes of the layered specimens indicate that the tensile strength obtained by the Brazilian disc test is not as accurate as that obtained by the direct tension test. Therefore, the modified Single Plane of Weakness (MSPW) failure criterion is proposed to predict the tensile strength of the layered rocks based on the failure modes of direct tension. The analytical predictions of the MSPW failure criterion agrees closely with the experimental and numerical results. In rock engineering, the MSPW failure criterion can conveniently predict the tensile strength and reflect the failure modes of layered rocks (such as shale, slate, and layered sandstone) with satisfactory accuracy.

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Guo, Y. B., V. P. W. Shim, and B. W. F. Tan. "Dynamic Tensile Properties of Magnesium Nanocomposite." Materials Science Forum 706-709 (January 2012): 780–85. http://dx.doi.org/10.4028/www.scientific.net/msf.706-709.780.

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In this study, a Mg-6wt%Al alloy and its composite containing 0.22vol% Al2O3 nanoparticles are fabricated using a disintegrated melt deposition technique, and samples are subjected to quasi-static and dynamic tension. Compared to quasi-static loading, both materials exhibit significantly higher yield stresses and tensile strengths, much better ductility, and thus a higher energy absorption capacity under dynamic tension. In terms of nanoparticle addition, its influence on the mechanical properties are not notable; enhancement of the elastic modulus, yield stress and tensile strength are negligible, and there is a small reduction in ductility. The tensile behaviour obtained in this investigation was compared with results of previous compression tests, and significant tension-compression asymmetry in the response is observed. The tensile yield stress is noticeably larger than that in compression, and the profile of the stress-strain curve for tension differs from that for compression – it is convex upwards for tension, but concave upwards for compression. A possible reason for this asymmetry is the occurrence of twinning in compression and its absence in tension.

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Richmon, Jeremy D., August B. Sage, Van W. Wong, Albert C. Chen, Christine Pan, Robert L. Sah, and Deborah Watson. "Tensile Biomechanical Properties of Human Nasal Septal Cartilage." American Journal of Rhinology 19, no. 6 (November 2005): 617–22. http://dx.doi.org/10.1177/194589240501900616.

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Background The biomechanical properties of human septal cartilage have yet to be fully defined and thereby limits our ability to compare tissue-engineered constructs to native tissue. In this study, we analyzed the tensile properties of human nasal septal cartilage with respect to axis of tension, age group, and gender. Methods Fifty-five tensile tests were run on human septal specimens obtained from 28 patients. Samples obtained in the vertical and anterior–posterior (both above and within the maxillary crest) axes were subjected to equilibrium and dynamic tensile testing. Results The average values for strength, failure strain, equilibrium modulus and dynamic modulus were not found to be significantly different with respect to axis of tension testing, age group, or gender. Tensile results for septal cartilage were as follows: equilibrium modulus 3.01 ± 0.39 MPa, dynamic modulus 4.99 ± 0.49 MPa, strength 1.90 ± 0.24 MPa, and failure strain 0.35 ± 0.03 mm/mm. Conclusion We confirm that septal cartilage has weaker tensile properties compared to articular cartilage and found no difference in strength with respect to age, gender, or axis of tension (isotropic).

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Du, Yong Qiang, Jian Zheng, and Jun Hui Yin. "Macroscopic and Microscopic Mechanical Properties of HTPB Coating in Solid Rocket Motor under Cyclic Tension." Key Engineering Materials 842 (May 2020): 10–15. http://dx.doi.org/10.4028/www.scientific.net/kem.842.10.

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Hydroxyl-terminated polybutadiene (HTPB) coating is continuously affected by environment/load spectrum during storage, and its macro and micro mechanical properties will deteriorate. Therefore, the cyclic tension test of HTPB coating was carried out with the elongation of HTPB coating was 5%, 10% and 15%, the tensile rate was 50mm/min, 100mm/min and 500mm/min, respectively, and the tensile times was 1000, and the macro and micro mechanical properties of the samples after cyclic tension were tested. The results show that the maximum stress that can be reached by each cyclic tension decreases with the increase of cyclic times, which proves that stress relaxation occurs. After cyclic tension, the tensile strength and cross-linking density of HTPB coating decrease with the increase of elongation and raise with the increase of tensile rate. There is a good linear correlation between cross-linking density and tensile strength.

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Salam, I., M. A. Malik, and W. Muhammad. "ICONE15-10393 MONOTONIC TENSILE PROPERTIES OF AN EXTRUDED AL ALLOY." Proceedings of the International Conference on Nuclear Engineering (ICONE) 2007.15 (2007): _ICONE1510. http://dx.doi.org/10.1299/jsmeicone.2007.15._icone1510_201.

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ZHANG, Shengde, Syuhei MORI, Masao SAKANE, Tadashi NAGASAWA, and Kaoru KOBAYASHI. "OS13F091 Tensile Properties and Viscoelastic Model of Resin Thin Film." Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2011.10 (2011): _OS13F091——_OS13F091—. http://dx.doi.org/10.1299/jsmeatem.2011.10._os13f091-.

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Mbuge, D. O., and Lawrence Gumbe. "MECHANICAL PROPERTIES OF BAMBOO (BAMBUSA VULGARIS)." Journal of Engineering in Agriculture and the Environment 8, no. 1 (February 17, 2022): 15. http://dx.doi.org/10.37017/jeae.v8i1.8.

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This research project investigated the tensile, bending and compressive strength of a species of bamboo called Bambusa vulgaris. The density of the B. vulgaris was found to be 500kg/m3 (oven dry). The tensile strength was 94.3MPa with nodes and 117.8MPa without nodes. The compressive strength was 49.9MPa with nodes and 56.7MPa without nodes, bending strength was 107.0MPa with nodes and 137.7MPa without nodes and Modulus of Elasticity in tension was 3002.2MPa with nodes and 3594.0MPa without nodes. Modulus of Elasticity in compression was 10,405.3MPa without nodes and 7,268.1MPa with nodes. The nodes were found to have a significant effect in lowering the tensile and bending strength of bamboo. The compressive strength was not affected by the presence or absence of nodes.

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Hui, Shang, and Yun Wei Zhang. "Study on the Tensile Mechanical Properties of Sympodial Bamboo Single Root." Applied Mechanics and Materials 307 (February 2013): 421–26. http://dx.doi.org/10.4028/www.scientific.net/amm.307.421.

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Bamboo plays an important role as a kind of vegetation with contribution to soil and water conservation, Mechanics property of roots play a crucial role in mechanics of soil-reinforcement. In order to find the tension properties of the bamboo roots underground, the tensile experiment for the roots of four kinds of sympodial bamboo, Bambusa distegia, Dendrocalamopsis oldhami, Dendrocalamus giganteus and Chimonocalamus dumosus, was implemented in the field. The experiment employed our own portable experimental equipment for testing tensile characteristics of root. Tensile force and strain rate of roots with different diameters was tested for these four kinds of bamboo. Then, their tensile strength and elastic modulus were obtained through calculation. The experimental results show that the tensile force of sympodial bamboo root increases regularly by the power function regular the increase of the root diameter, and the tensile strength of root reduces along with the increase of root diameter by the power function. The average anti-tension of these four bamboo roots is Bambusa distegia (59.47N), Chimonocalamus dumosus(58.65N), Dendrocalamus giganteus(43.51N) and Dendrocalamopsis oldhami(40.8N), and their average tensile strength is Dendrocalamus giganteus(30.24Mpa), Bambusa distegia(23.14MPa), Dendrocalamopsis oldhami(22.83MPa) and Chimonocalamus dumosus(18.14MPa). The ultimate strain has limitation from 14% to 18%. The average elastic modulus is Dendrocalamus giganteus(169.86MPa), Bambusa distegia(166.37MPa), Dendrocalamopsis oldhami(158.36Mpa) and Chimonocalamus dumosus(135.56MPa). Compared to the four kinds of bamboo, Dendrocalamus giganteus root has the best comprehensive tensile properties. Next are Bambusa Distegia root, Dendrocalamopsis oldhami root, and Chimonocalamus dumosus root respectively. Compared with the common of Pinus tabulaeformis, Betula platyphylla, Larix gmelinii,clumping bamboo roots have better tensile mechanical properties.

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Wang, Zhuolin. "Mechanical properties of carbon steel under uniaxial static tension." Journal of Physics: Conference Series 2535, no. 1 (June 1, 2023): 012013. http://dx.doi.org/10.1088/1742-6596/2535/1/012013.

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Abstract With the continuous development of science and technology, carbon steel is widely used in production and life. Especially at the practical application level, in the engineering application, the analysis of the mechanical properties of carbon steel materials has become increasingly prominent. The tensile test is a mechanical property test in which a standard tensile specimen is pulled to fracture at a specified tensile speed under the continuous action of static axial tensile force. The force and elongation are continuously recorded during the tensile process so as to obtain its strength criterion and plasticity criterion. In this paper, the characteristics of mechanical properties of the high, medium, and low carbon steels under uniaxial static tension are discussed. The reasons for the different mechanical properties of steels with different carbon content are explained from a microscopic perspective. The study provides some basic assistance to those who need relevant information.

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Arak, Margus, Kaarel Soots, Marge Starast, and Jüri Olt. "Mechanical properties of blueberry stems." Research in Agricultural Engineering 64, No. 4 (December 31, 2018): 202–8. http://dx.doi.org/10.17221/90/2017-rae.

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In order to model and optimise the structural parameters of the working parts of agricultural machines, including harvesting machines, the mechanical properties of the culture harvested must be known. The purpose of this article is to determine the mechanical properties of the blueberry plant’s stem; more precisely the tensile strength and consequent elastic modulus E. In order to achieve this goal, the measuring instrument Instron 5969L2610 was used and accompanying software BlueHill 3 was used for analysing the test results. The tested blueberry plant’s stems were collected from the blueberry plantation of the Farm Marjasoo. The diameters of the stems were measured, test units were prepared, tensile tests were performed, tensile strength was determined and the elastic modulus was obtained. Average value of the elastic modulus of the blueberry (Northblue) plant’s stem remained in the range of 1268.27–1297.73 MPa.

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Stanciu, Mariana Domnica, Horațiu Teodorescu Drăghicescu, and Ioan Călin Roșca. "Mechanical Properties of GFRPs Exposed to Tensile, Compression and Tensile–Tensile Cyclic Tests." Polymers 13, no. 6 (March 15, 2021): 898. http://dx.doi.org/10.3390/polym13060898.

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Currently there are many applications for the use of composites reinforced with fiberglass mat and fabrics with polyester resin: automotive, aerospace, construction of wind turbines blades, sanitary ware, furniture, etc. The structures made of composites have a complex geometry, can be simultaneously subjected to tensile–compression, shear, bending and torsion. In this paper we analyzed the mechanical properties of a polyester composite material reinforced with glass fiber (denoted GFRP) of which were carried out two types of samples: The former contains four layers of plain fabric (GFRP-RT500) and the second type contains three layers of chopped strand mat (GFRP-MAT450). The samples were subjected to tensile, compression and tensile–tensile cyclic loading. The results highlight the differences between the two types of GFRP in terms of initial elastic modulus, post yield stiffness and viscoelastic behavior under cyclic loading. Thus, it was observed that the value of the modulus of elasticity and the value of ultimate tensile stress are approximately twice higher in the case of GFRP-RT500 than for the composite reinforced with short fibers type GFRP-MAT450. The tensile–tensile cyclic test highlights that the short glass fiber-reinforced composite broke after the first stress cycle, compared to the fabric-reinforced composite in which rupture occurred after 15 stress cycles. The elasticity modulus of GFRP-RT500 decreased by 13% for the applied loading with the speed of 1 mm/min and by 15% for a loading speed of 20 mm/min.

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Pons, Dirk J., Gareth Bayley, Christopher Tyree, Matthew Hunt, and Reuben Laurenson. "Material Properties of Wire for the Fabrication of Knotted Fences." International Journal of Metals 2014 (November 26, 2014): 1–12. http://dx.doi.org/10.1155/2014/123195.

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This paper describes the materials properties of galvanised fencing wire, as used in the fabrication of knotted wire fences. A range of physical properties are investigated: tensile strength, ductility in tension, Young’s modulus, three-point bending, and bending span. A range of commercially available wire products were tested. The results show that most, but not all, high tensile wire samples met the minimum tensile and ductility requirements. Young’s modulus results failed to provide any meaningful insights into wire quality. Flexural modulus results also failed to provide any insight into wire quality issues, with no statistically significant differences existing between acceptable and problematic wire batches. The implications are that premature fence failures are unlikely to be caused solely by reduced tensile properties. Existing test methods, including tensile strength and ductility, are somewhat incomplete, perhaps even unreliable, as measures of wire quality.

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Sharma, V., J. B. Isaacs, and S. Nemat-Nasser. "Measurement of Tensile Properties of Metallic Foils." Journal of Applied Mechanics 65, no. 3 (September 1, 1998): 782–83. http://dx.doi.org/10.1115/1.2789128.

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A fixture has been developed for testing thin specimens under uniaxial tension. The fixture consists of two cantilever beams with strain gauges attached to them close to their fixed ends. The displacement of one beam is used to measure the force and the difference in the displacements of the beams is used to measure the sample displacement. The tensile properties of 0.025 mm by 1.25 mm by 5 mm iron-nickel specimens were measured. The tensile plastic yield point of the specimens was observed to be 1.4 GPa and the total elongation to failure turned out to be five percent and eight percent, for the two tested specimens.

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Yao, Jia Wei, Yu Pu Song, Li Kun Qin, and Ling Xia Gao. "Mechanical Properties and Failure Criteria of Concrete under Biaxial Tension and Compression." Advanced Materials Research 261-263 (May 2011): 252–55. http://dx.doi.org/10.4028/www.scientific.net/amr.261-263.252.

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Utilizing the large static-dynamic triaxial test system, 7 proportional loading biaxial tensile and compressive tests of concrete were conducted. The proportional loading paths are 0 (uniaxial compression), -0.05, -0.1, -0.15, -0.2, -0.25 and ∞ (uniaxial tension). Compressive and tensile strength were measured as well as the strains at two loading directions. Considering the ratio to tension and compression, failure criteria of ordinary concrete under biaxial tension and compression was established, which has a good agreement with test value.

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Frerichs, Andrew E. "Tensile Properties Of Strontium Metal." Advanced Materials Letters 3, no. 5 (November 1, 2012): 362–64. http://dx.doi.org/10.5185/amlett.2012.6360.

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Miyake, Hajime, Yasuo Gotoh, Yutaka Ohkoshi, and Masanobu Nagura. "Tensile Properties of Wet Cellulose." Polymer Journal 32, no. 1 (January 2000): 29–32. http://dx.doi.org/10.1295/polymj.32.29.

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Virk, A. S., W. Hall, and J. Summerscales. "Tensile properties of jute fibres." Materials Science and Technology 25, no. 10 (October 2009): 1289–95. http://dx.doi.org/10.1179/174328408x385818.

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Huang, Shih-Liang, and Juin-Yih Lai. "Structure-tensile properties of polyurethanes." European Polymer Journal 33, no. 10-12 (October 1997): 1563–67. http://dx.doi.org/10.1016/s0014-3057(97)00058-x.

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von Fraunhofer, J. A., R. J. Storey, and B. J. Masterson. "Tensile properties of suture materials." Biomaterials 9, no. 4 (July 1988): 324–27. http://dx.doi.org/10.1016/0142-9612(88)90027-0.

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LeBleu, J. B., P. R. Mei, V. I. Levit, and M. J. Kaufman. "Tensile Properties of NiAl Bicrystals." Scripta Materialia 38, no. 3 (January 1998): 415–22. http://dx.doi.org/10.1016/s1359-6462(97)00469-7.

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Shao, Yong Zheng, Nguyen T. Phong, Kazuya Okubo, Toru Fujii, Ou Shibata, and Yukiko Fujita. "Study on the Effect of Matrix Properties on the Mechanical Performance of Carbon Fabric Composites." Advanced Materials Research 646 (January 2013): 38–43. http://dx.doi.org/10.4028/www.scientific.net/amr.646.38.

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Carbon fiber (CF) reinforced compositesusing different types of vinylester (VE)resin includingconventional VE resinhave been prepared. The mechanical performance were characterized by different tests, such as tensile, mode-I interlaminarfracture toughness, tension-tension fatigue and scanning electron microscope (SEM).The experimental results showed that the tensile strength of CF/VE composites changed at a wide range from 22.3% to 37.8% in comparison with the CF/conventional VE composite due to resin type, where the strain at failure was varying. The tensile strength increased with an increase of adhesive strength between carbon fiber and VE resin characterized by the microdroplet test. Namely, a good correlation between the tensile strength of composites and the adhesive strength was found. On the other hand, almost an inverse correlation was found between the tensile strength of composites and the interlaminar fracture toughness of composites obtained by DCB (double cantilever beams) tests. There was no apparent correlation found between the strain at failure for pure resins and the tensile strength of composites.Thefatigue life of CF/VE compositesincreased as well as the tensile strength with an increase of the adhesive strength between carbon fiber and the resin. The samples sometime survived 1000 times longer than that of CF/conventional VE compositewhen the maximum cycle stress was 70% of the tensile strength of the strongest composite.

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Khasanov, Bakhridin, Ruzimurat Choriev, Zukhra Ismailova, Guzal Eshchanova, and Timur Mirzaev. "Study of the strength properties of modified concrete in tension." E3S Web of Conferences 365 (2023): 02004. http://dx.doi.org/10.1051/e3sconf/202336502004.

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The resistance of concrete to axial tension is much less than the resistance to compression and is largely determined by the adhesion of its components. The low tensile strength of ordinary concrete is explained by the heterogeneity of its structure and the discontinuity of concrete, which contributes to the development of stress concentration, especially under the action of tensile forces. To increase the tensile strength of concrete, it is necessary to eliminate, first of all, the heterogeneity of the structure of concrete - one of the main reasons for the large dispersion of the results of mechanical tests of this material, which affects the experimental determination of compressive strength. A significant difference between the compressive strength for ordinary concrete indicates a rather large spread of such values. This scatter is explained by the different influence of factors on tension and compression. For example, for ordinary concretes, it was found that with an increase in W/C , the tensile strength decreases, but to a lesser extent than the compressive strength. With an increase in the grade of concrete, the tensile strength increases. High-strength concretes, as a rule, prepared on concrete mixes with low W/C and on clean conditioned aggregates in the form of crushed stone and sand, have an increased density, therefore, they have less variation in strength readings both in compression and at stretching [1-4].

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Jiang, Le Lun, Yong Huang, Jin Tian Ling, Zhang Qi Feng, Xi Feng Qiao, and Ke Yun Chen. "Electrostatic Spinning Preparation and Mechanical Properties of PLGA Fibers and Fiber Membrane." Advanced Materials Research 834-836 (October 2013): 847–54. http://dx.doi.org/10.4028/www.scientific.net/amr.834-836.847.

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PLGA (polylactic-co-glycolic acid) is an ideal material for biodegradable medical suture. PLGA fibers and fiber membrane was prepared by using electrostatic spinning, the surface morphology of PLGA fibers and fiber membranes was observed by SEM, and mechanical properties of PLGA fibers and fiber membranes were tested by self-developed micro-force loading system. Experimental results were found that the arrangement of PLGA fibers due to surface tension and friction between fibers was the main factor on mechanical properties of PLGA fibers. The tensile strength of two fibers in winding arrangement was 1.81 times of fibers arranged in parallel at a given number. The tensile strength of three fibers in winding arrangement was 1.25 times of fibers arranged in parallel at a given number. For 80.6 % porosity and 1.028-5.764 mm width PLGA fiber membranes, tensile strength was 1.06-1.47 MPa, tensile modulus was 9.14-13.6 MPa, and elongation at break was 10.8 % to 11.6 %. The tension of fiber membranes increased with its width.

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Hua, Jun, Zhirong Duan, Chen Song, and Qinlong Liu. "Molecular dynamics study on the tensile properties of graphene/Cu nanocomposite." International Journal of Computational Materials Science and Engineering 06, no. 03 (September 2017): 1750021. http://dx.doi.org/10.1142/s204768411750021x.

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In this paper, the mechanical properties, including elastic properties, deformation mechanism, dislocation formation and crack propagation of graphene/Cu (G/Cu) nanocomposite under uniaxial tension are studied by molecular dynamics (MD) method and the strain rate dependence is also investigated. Firstly, through the comparative analysis of tensile results of single crystal copper (Cu), single slice graphene/Cu (SSG/Cu) nanocomposite and double slice graphene/Cu (DSG/Cu) nanocomposite, it is found that the G/Cu nanocomposites have larger initial equivalent elastic modulus and tensile ultimate strength comparing with Cu and the more content of graphene, the greater the tensile strength of composites. Afterwards, by analyzing the tensile results of SSG/Cu nanocomposite under different strain rates, we find that the tensile ultimate strength of SSG/Cu nanocomposite increases with the increasing of strain rate gradually, but the initial equivalent elastic modulus basically remains unchanged.

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Sun, Zixi, Xinyu Geng, Luyang Ren, and Henry Hu. "Microstructure, Tensile Properties and Fracture Behavior of HPDC Magnesium Alloy AZ91." International Journal of Materials, Mechanics and Manufacturing 8, no. 2 (April 2020): 50–56. http://dx.doi.org/10.18178/ijmmm.2020.8.2.483.

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Wang, Zhi, Wen Wen Liu, and Yun Hai Du. "Experimental Study of the Mechanical Properties of the Composite Materials Hose." Advanced Materials Research 496 (March 2012): 3–6. http://dx.doi.org/10.4028/www.scientific.net/amr.496.3.

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The tensile elastic modulus, bend elastic modulus and tensile strength of the composite materials hose were determined by uniaxial tension test and three point bending test. The specimen was first destroyed from the inner or outer layer rubber, and then the spiraled cords threads was pulled out and the specimen destroyed with irregular fracture shape. According to the test results, the flexible hose can be considered as linear elastic material because the deformation showed a linear relationship with the external load in uniaxial tension test and three point bending test. The bend elastic modulus EB is much smaller than the tensile elastic modulus ET. The calculation results used EB show a good consistency with the test result and the EB should be selected as design parameters and the design system would be more secure.

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Zhu, Yin, and Jiong Xin Zhao. "Effect of Heat Setting Methods on Structures and Properties of High Strength Polyvinyl Alcohol Fibre." Materials Science Forum 815 (March 2015): 643–48. http://dx.doi.org/10.4028/www.scientific.net/msf.815.643.

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The effect of heat setting methods on the structures and mechanical properties of high strength polyvinyl alcohol (PVA) fibre is studied in this article. The microstructure and mechanical properties of heat treated PVA fibre is investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD), and single fibre electronic tensile strength tester. Results show that the heat setting method with constant tension is a good heat setting method which can largely enhance the tensile strength of PVA fibre. During the heat setting process, the mechanical properties of PVA fibre are greatly affected by the temperature, tension and setting time. When the temperature is 220°C, tension is 5cN/dtex and setting time is 90sec, the tensile strength of PVA fibre increases from 12.0cN/dtex to 16.4cN/dtex in compare with the PVA fibre without heat setting

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Nag, Ranajit K., Andrew C. Long, and Michael J. Clifford. "Influence of Hydroxyethyl Cellulose Treatment on the Mechanical Properties of Jute Fibres, Yarns, and Composites." Conference Papers in Materials Science 2013 (October 24, 2013): 1–6. http://dx.doi.org/10.1155/2013/956072.

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Jute yarns were treated by tap water with and without tension at room temperature for 20 minutes and then dried. Fibre and yarn strength were measured before and after treatment. Unidirectional (UD) composites were made by both treated and untreated yarns with and without applying hydroxyethyl cellulose (HEC) as size material. Water-treated jute yarns without tension and composites made of those yarns showed decreased strength, and water treated jute yarns with tension and composites made of those yarns showed increased strength with respect to raw yarns and composites made of raw yarns. However, no specific trend was noticed for fibre tensile strength and tensile modulus. HEC sized yarns showed up to 12% higher failure load with respect to unsized yarns, and composites made of HEC sized yarns showed up to 17% and 12% increase in tensile strength and tensile modulus, respectively, compared to composites made of similar types of unsized yarns.

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Nesvetaev, G. V., A. V. Dolgova, L. V. Postoj, M. N. Grigoryan, and B. M. Yazyev. "Effect of Dosage of Redispersible Powders on the Properties of Fine Concrete." Materials Science Forum 974 (December 2019): 413–18. http://dx.doi.org/10.4028/www.scientific.net/msf.974.413.

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The RPP introduction has been established up to 3% by weight of the dry concrete mix is accompanied by a decrease in the fine-grained concrete tensile strength in compression to 40% and in tension during bending to 15%. The relationship between the tensile strength limit in bending and compression for the studied materials is invariant to the cement and RPP type. With the concrete tensile strength in tensile bending increase, there is a weak tendency to a decrease in the adhesion ratio value to the concrete base and tensile strength. The adhesion amount to the concrete base with RPP increasing dosage can either increase or decrease after a certain limit, depending on the cement properties. The maximum increase in adhesion to the concrete base was 37%, while the decrease in the concrete elasticity initial modulus was 26%.

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Válek, Jaroslav, and Petr Novosad. "Selected Properties of Fiber Concrete after Heat Loading." Applied Mechanics and Materials 729 (January 2015): 52–57. http://dx.doi.org/10.4028/www.scientific.net/amm.729.52.

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The aim of the research was to test basic properties of fiber reinforced concrete with PP fibers and cement matrix subjected to heat load of various intensity. Behavior of fiber reinforced concrete was observed in particular from the point of view of change of physico-mechanical properties and microstructure after exposure of test samples to different level of heat load. Volume weight, compressive strength, tensile bending strength, splitting tensile strength and strength in tension of surface layers of concrete were observed.

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Zhou, Wei, Xi Wang, Hong Bo Zhang, and Ji Li Rong. "Dynamic Mechanical Behavior of Fiber Reinforced Polymer Composites Embedded with ZnO Whiskers." Advanced Materials Research 197-198 (February 2011): 1532–35. http://dx.doi.org/10.4028/www.scientific.net/amr.197-198.1532.

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Glass fiber reinforced polymer composites were prepared by dispersing zinc oxide (ZnO) whiskers in resin matrix. Static and dynamic tensile tests of the as-prepared composites were performed by means of a universal testing machine and the split hopkinson tensile bar (SHTB), respectively. Good tensile properties, which can be affected by the strain rates, of the composites are obtained. The fracture section morphology of the composites was investigated by scanning electron microscope (SEM). The different failure of the composites under static and dynamic tension is found. The tensile properties of the composites are dominated by pull-out and fracture of fiber bundles. The influence of ZnO whiskers on the performance of composites has been discussed. ZnO whiskers, which have unique three-dimensional structures and corresponding stress transfer, contribute to the tensile properties of the composites.

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Putic, Slavisa, Marina Stamenovic, Jelena Petrovic, Marko Rakin, and Bojan Medjo. "Effect of alkaline solutions on the tensile properties of glass-polyester pipes." Acta Periodica Technologica, no. 42 (2011): 185–95. http://dx.doi.org/10.2298/apt1142185p.

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Construction materials, traditionally used in process equipment, are today successfully replaced by composite materials. Hence, many pipes are made of these materials. The subject of this study was the influence of liquids on the state of stresses and tensile strengths in the longitudinal and circumferential direction of glass-polyester pipes of a definite structure and known fabrication process. These analyses are of great importance for the use of glass-polyester pipes in the chemical industry. The tensile properties (the ultimate tensile strength and the modulus of elasticity) were tested and determined for specimens cut out of the pipes; flat specimens for the tensile properties in the longitudinal direction and ring specimens for the tensile properties in the circumferential direction. First, the tension test was performed on virgin samples (without the influence of any liquid), to obtain knowledge about the original tensile properties of the material composite studied. Subsequently, the specimens were soaked in alkaline solutions: sodium hydroxide (strong alkali) and ammonium hydroxide (weak alkali). These solutions were selected because of their considerable difference in pH values. The specimens and rings were left for 3, 10, 30 and 60 days in each liquid at room temperature. Then, the samples were tested on tension by the standard testing procedure. A comparison of the obtained results was made based on the pH values of the aggressive media in which the examined material had been soaked, as well as based on the original tensile properties and the number of days of treatment. Micromechanical analyses of sample breakage helped in the elucidation of the influence of the liquids on the structure of the composite pipe and enabled models and mechanisms that produced the change of strength to be proposed.

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Wang, Qiang, Zhi Min Zhang, and Xing Zhang. "Effect of Initial Grain on Mechanical Properties of AZ31 Alloy during Warm Forming." Applied Mechanics and Materials 217-219 (November 2012): 2304–7. http://dx.doi.org/10.4028/www.scientific.net/amm.217-219.2304.

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Plane strain compression were carried out for as-cast and pre-strained AZ31 alloy specimens at 210～330°C. The influence of initial grain on strengthening effect was analyzed by means of metallographic examination and mechanical testing. The results indicate the recrystallized grain of Mg alloy is sensitive to initial grain. With the deformation temperature increasing, the ultimate tensible strength decreases for as-cast and pre-strained alloy. With the deformation degree increasing, the tensile strength presents an increasing trend for as-cast alloy, but the tensile strength decreases on the whole for pre-strained alloy. The tensile strength increments of ～50% can be achieved under appropriate processing conditions.

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Re, Dino, Francesco De Angelis, Gabriele Augusti, Davide Augusti, Sergio Caputi, Maurizio D’Amario, and Camillo D’Arcangelo. "Mechanical Properties of Elastomeric Impression Materials: An In Vitro Comparison." International Journal of Dentistry 2015 (2015): 1–8. http://dx.doi.org/10.1155/2015/428286.

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Purpose.Although new elastomeric impression materials have been introduced into the market, there are still insufficient data about their mechanical features. The tensile properties of 17 hydrophilic impression materials with different consistencies were compared.Materials and Methods.12 vinylpolysiloxane, 2 polyether, and 3 hybrid vinylpolyether silicone-based impression materials were tested. For each material, 10 dumbbell-shaped specimens were fabricated (n=10), according to the ISO 37:2005 specifications, and loaded in tension until failure. Mean values for tensile strength, yield strength, strain at break, and strain at yield point were calculated. Data were statistically analyzed using one-way ANOVA and Tukey’s tests (α=0.05).Results.Vinylpolysiloxanes consistently showed higher tensile strength values than polyethers. Heavy-body materials showed higher tensile strength than the light bodies from the same manufacturer. Among the light bodies, the highest yield strength was achieved by the hybrid vinylpolyether silicone (2.70 MPa). Polyethers showed the lowest tensile (1.44 MPa) and yield (0.94 MPa) strengths, regardless of the viscosity.Conclusion.The choice of an impression material should be based on the specific physical behavior of the elastomer. The light-body vinylpolyether silicone showed high tensile strength, yield strength, and adequate strain at yield/brake; those features might help to reduce tearing phenomena in the thin interproximal and crevicular areas.

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Meng, Xin, Erlei Bai, Zhihang Wang, Zhe Huang, and Wei Xia. "Study on Splitting Tensile Mechanical Properties of Carbon Fiber/Polymer Latex Powder Composite Modified Concrete." E3S Web of Conferences 261 (2021): 02036. http://dx.doi.org/10.1051/e3sconf/202126102036.

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The effects of carbon fiber and polymer latex powder on the split tensile mechanical properties of concrete in single and compound mixing conditions are studied. The results show that both carbon fiber or polymer latex powder can improve the split tensile strength and peak strain of concrete. When the carbon fiber content is 0.2%, the split tensile mechanical properties of carbon fiber reinforced concrete (CFRC) are the best. When the amount is 8%, the mechanical properties of polymer modified concrete (PMC) in split tension are the best. When the carbon fiber content is 0.3% and the polymer latex powder content is 0.8%, the splitting tensile mechanical properties of the carbon fiber/polymer latex powder composite modified concrete (CFRPMC) specimens are the best, and are better than CFRC specimens and PMC specimens.

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Barzegari, Mohamad Reza, Jiaolian Yao, and Denis Rodrigue. "Mechanical Properties of Density Graded Foams: Tensile Properties." Cellular Polymers 32, no. 6 (November 2013): 323–42. http://dx.doi.org/10.1177/026248931303200601.

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Park, Na Young, Young Chan Ko, Lili Melani, and Hyoung Jin Kim. "Mechanical properties of low-density paper." Nordic Pulp & Paper Research Journal 35, no. 1 (March 26, 2020): 61–70. http://dx.doi.org/10.1515/npprj-2019-0052.

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AbstractFor the mechanical properties of paper, tensile testing has been widely used. Among the tensile properties, the tensile stiffness has been used to determine the softness of low-density paper. The lower tensile stiffness, the greater softness of paper. Because the elastic region may not be clearly defined in a load-elongation curve, it is suggested to use the tensile modulus which is defined as the slope between the two points in the curve. The two points which provide the best correlation with subjective softness evaluation should be selected. Low-density paper has a much lower tensile strength, but much larger elongation at the break. It undergoes a continuous structural change during mechanical testing. The degree of the structural change should depend on tensile conditions such as the sample size, the gauge length, and the rate of elongation. For low-density paper, the tensile modulus and the tensile strength should be independent of each other. The structure efficiency factor (SEF) is defined as a ratio of the tensile strength to the tensile modulus and it may be used a guideline in developing superior low-density paper products.

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TAO, Yubo, Peng LI, and Ling PAN. "Improving Tensile Properties of Polylactic Acid Parts by Adjusting Printing Parameters of Open Source 3D Printers." Materials Science 26, no. 1 (November 8, 2019): 83–87. http://dx.doi.org/10.5755/j01.ms.26.1.20952.

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Open source 3D printers (OS3DPs) have become increasingly more widespread in recent years because of their ease of use and budget friendliness, with the majority being fused deposition modeling (FDM) printers. However, due to natural deficiencies of the FDM printing methodology, different printing parameters can cause various properties of printed parts. To obtain printed polylactic acid (PLA) parts with improved tensile properties, a tension model of the part and an orthogonal experiment scheme were constructed in this paper. The effects of three printing parameters (layer height, orientation angle (OA) of the part, and print speed) on tensile properties (elastic modulus, tensile strength, and elongation at break) were investigated. The results demonstrated that the printing parameters affected the tensile properties of PLA parts. Larger layer height and lower print speed contributed to the improvement of tensile strength. The OA of the part had the greatest effect on the parts’ elastic modulus and elongation at break among the three parameters. Both layer height and OA of the part affected part tensile strength significantly. In this research, layer height of 0.2 mm and print speed of 20 ~ 30 mm/s are found to be the optimal printing parameters. Adjusting the OA of the part can provide targeted tensile properties, and the parts with the OA of 45° resulted in the lowest tensile strength because the tensile force is only held by fibers parallel to the force orientation instead of all fibers.

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Helexa, M. "Monitoring the impact of tyre inflation pressure on tensile properties of forest tractors." Research in Agricultural Engineering 60, No. 4 (November 27, 2014): 127–33. http://dx.doi.org/10.17221/49/2013-rae.

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The article discusses monitoring of the impact of tyre inflation pressure on tensile properties of forest tractors. The <br />LKT 81 T forest tractor, manufactured byZŤS TEES, Martin (Slovak Republic) and widely used in Slovakia, was specifically chosen as the mechanised vehicle to be monitored. Tensile properties were examined using standard tensile tests, with a Tatra freight vehicle serving as the load vehicle. Actual measurements were performed on a concrete surface and on soil characterised as gravelly loam whose average moisture was 38%. The statistical methods used to verify the impact of significance from changes in tyre inflation pressure on selected tensile indicators were multi-factor analysis of variance (ANOVA) and Student’s t-test. Even though statistical analysis failed to directly confirm significance in the impact of changes of tyre inflation pressure on selected load indicators for a forest tractor fitted with standard tyres, positive changes can be discerned in measured dependencies. The article concludes with a discussion of the results obtained and their possible application in operational practice.

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Chu, Jiafeng. "Tensile Mechanical Properties of Nanowoven Composites Based on Homogenization Theory." Science of Advanced Materials 14, no. 4 (April 1, 2022): 661–68. http://dx.doi.org/10.1166/sam.2022.4293.

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The nanocomposite is a multiphase material composed of two or more component materials with different properties and different forms through composite means. New material properties. The stress distribution of nano-braided composites in bending is much more complicated than in tension. Like the tensile condition, the braid angle is still the main factor affecting the bending failure mode. In order to study the tensile strength of nano-braided composites from a microscopic perspective, the nonlinear damage analysis under multiple tensile load steps is carried out in this paper. The damage analysis results show that the microscopic damage modes of different braided angle composites differ. Based on this, this paper determines the transformation of the failure mechanism to characterize the braided composites. An important parameter—critical braiding angle, established different tensile strength failure criteria for small braided angle composites and large braided angle composites and numerically predicted the tensile strength of nano braided composites based on these criteria. The value of each stress component increases with the increase of the braiding angle, and the ratio is about 1:1.25. The strength prediction results are in good agreement with the experimental results.

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Parasuraman, Prabhuraj, Tushar Sonar, and Selvaraj Rajakumar. "Microstructure, tensile properties and fracture toughness of friction stir welded AA7075-T651 aluminium alloy joints." Materials Testing 64, no. 12 (November 29, 2022): 1843–50. http://dx.doi.org/10.1515/mt-2022-0212.

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Abstract The main objective of this investigation is to study the microstructure, tensile properties and fracture toughness of friction stir welded (FSW) butt joints of 10 mm thick AA7075-T651 plates. The microstructural features of stir zone (SZ), thermos-mechanically affected zone (TMAZ), heat affected zone (HAZ) were analyzed using optical microscopy technique. The tensile properties were evaluated using smooth and notch tensile specimens and compared to base metal properties. The microhardness survey was done across the weld cross section and correlated to the failure of tensile specimens. Compact tension (CT) specimens were used to evaluate the fracture toughness of welded joints. The fractured tensile and CT specimens were analyzed using scanning electron microscopy (SEM). Results showed that the FSW AA7075-T651 specimens welded using axial load of 12 kN, tool rotation speed of 750 rpm and welding speed of 30 mm/min exhibited 412 MPa tensile strength and 9% elongation. It showed 88 and 89% of base metal strength elongation. The joints showed fracture toughness of 23 MPa m1/2 which is 80% of base metal fracture toughness. The superior tensile and fracture toughness properties of joints are mainly attributed to the evolution of finer grains in SZ due to the stirring action of FSW tool.

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Liang, Ji-Zhao. "Effects of graphene nano-platelets size and content on tensile properties of polypropylene composites at higher tension rate." Journal of Composite Materials 52, no. 18 (December 7, 2017): 2443–50. http://dx.doi.org/10.1177/0021998317746478.

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The influence of graphene nano-platelets size and content on tensile properties of polypropylene composites was investigated by means of a universal testing machine under room temperature and tension rate 300 mm/min. The results showed that the Young’s modulus increased with increasing graphene nano-platelets weight fraction, the tensile yield strength and the tensile fracture strength increased when graphene nano-platelets weight fraction was lower than 0.4 wt.%, and then varied slightly with increasing graphene nano-platelets weight fraction; while the tensile elongation at break decreased with increasing graphene nano-platelets weight fraction. In addition, the difference in tensile yield strength, tensile fracture strength, and tensile elongation at break between the composites reinforced separately with different size graphene nano-platelets was not significant under these experimental conditions; this could be attributed to the interfacial layer between the filler and the matrix could transfer some stress under tensile load.

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Kan, Chi Wai, Maggie Hoi Man Leung, and Rattanaphol Mongkholrattanasit. "Tensile Properties Analysis of Paper Towels." Applied Mechanics and Materials 848 (July 2016): 162–65. http://dx.doi.org/10.4028/www.scientific.net/amm.848.162.

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In this study, 12 commercially available paper towels were collected from the local market. Their tensile properties were investigated by Kawabata Evaluation System for Fabric (KES-F). Four tensile properties namely: (i) extensibility (EMT), (ii) tensile energy (WT), (iii) tensile resilience (RT) and (iv) linearity of WT (LT) were evaluated. Experimental results revealed that the tensile properties varied within the products. EMT was used as the key property for discussing the tensile properties of paper towels. However, when the different tensile properties were correlated, it was found that WT/RT, WT/EMT and RT/EMT had strong Pearson correlation. In addition, there was no significant statistically relationship between weight and thickness to EMT. Based on this study, it can provide some information about the tensile properties of paper towels in local market which may help the industry for further improving the product quality.

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Inoue, Mari, and Masako Niwa. "Tensile and Tensile Stress Relaxation Properties of Wool/Cotton Plied Yarns." Textile Research Journal 67, no. 5 (May 1997): 378–85. http://dx.doi.org/10.1177/004051759706700511.

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The basic objective of this work is to understand the effects of humidity and the ratio of wool and cotton fiber on the initial tensile and tensile stress relaxation properties of plied yarns. These low strain properties relate directly to the fabric hand, appearance, and formability of clothing. We have found that wool/cotton plied yarns have high hygroscopicity, high water absorption properties, and a low stress relaxation rate at high relative humidity. Also, we have adapted the power law to provide a relation between wool fiber content and the values of tensile resilience and stress relaxation rate. Their values are then estimated from the values of tensile resilience and stress relaxation rate of the constituent fibers and the blend composition.

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Snider, G. R., J. Lomakin, M. Singh, S. H. Gehrke, and M. S. Detamore. "Regional Dynamic Tensile Properties of the TMJ Disc." Journal of Dental Research 87, no. 11 (November 2008): 1053–57. http://dx.doi.org/10.1177/154405910808701112.

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Although the TMJ disc has been well-characterized under tension and compression, dynamic viscoelastic regional and directional variations have heretofore not been investigated. We hypothesized that the intermediate zone under mediolateral tension would exhibit lower dynamic moduli compared with the other regions of the disc under either mediolateral or anteroposterior tension. Specimens were prepared from porcine discs (3 regions/direction), and dynamic tensile sweeps were performed at 1% strain over a frequency range of 0.1 to 100 rad/sec. Generally, the intermediate zone possessed the lowest storage and loss moduli, and the highest loss tangent. This study further accentuates the known distinct character of the intermediate zone by showing for the first time that these differences also extend to dynamic behavior, perhaps implicating the TMJ disc as a structure primarily exposed to predominantly anteroposterior tension via anterior and posterior attachments, with a need for great distension mediolaterally across the intermediate zone.

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Liang, Ji-Zhao, and Fang Wang. "Tensile properties of polyformaldehyde blends and nanocomposites." Journal of Polymer Engineering 35, no. 5 (June 1, 2015): 417–22. http://dx.doi.org/10.1515/polyeng-2014-0213.

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Abstract The effects of the compositions and tensile rates on the tensile properties of the polyformaldehyde (POM)/ethylene-vinyl acetate copolymer (EVA)/high-density polyethylene (HDPE) blends and POM/EVA/HDPE composites filled with nanometer calcium carbonate were investigated by means of a tensile test machine at room temperature. The results showed that the Young’s modulus, tensile yield strength, and tensile elongation at break of the blends and the composites decreased nonlinearly with increase in the HDPE weight fraction; it should be attributed to the low stiffness and strength of the HDPE resin; the difference in the Young’s modulus and tensile yield strength between the blends and the composites was insignificant under the same experimental conditions. Both the Young’s modulus and tensile yield strength of the blends and the composites increased nonlinearly with increase in the tensile rate in the case of low tensile rate level. Moreover, the predictions of the Young’s modulus and tensile strength were roughly close to the measured data from the blends.

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Liang, Ji-Zhao, De-Rong Duan, Chak-Yin Tang, Chi-Pong Tsui, Da-Zhu Chen, and Shui-Dong Zhang. "Tensile properties of polycaprolactone/nano-CaCO3 composites." Journal of Polymer Engineering 34, no. 1 (February 1, 2014): 69–73. http://dx.doi.org/10.1515/polyeng-2013-0208.

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Abstract The effects of nanometer calcium carbonate content and tensile rate on the tensile properties of the filled polycaprolactone (PCL) composites were investigated. There was a certain reinforcing effect of the filler on the PCL resin. The tensile modulus increased nonlinearly, and the tensile strength also increased with increase of the filler weight fraction. When the filler weight fraction was kept constant, the tensile modulus and tensile strength increased slightly with increasing tensile rates. By comparing the experimental results with those determined from the tensile yield strength theory, the interfacial adhesion between the filler and matrix was found to be relatively strong; it should be one of the reasons for the good reinforcing effect.

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Whittenberger, J. Daniel, and Michael J. Luton. "Elevated temperature creep properties of NiAl eryomilled with and without Y2O3." Journal of Materials Research 10, no. 5 (May 1995): 1171–86. http://dx.doi.org/10.1557/jmr.1995.1171.

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The creep properties of lots of NiAl eryomilled with and without Y2O3 have been determined in compression and tension. Although identical cryomilling procedures were used, differences in composition were found between the lot ground with 0.5 vol % yttria and the lot ground without Y2O3. Compression testing between 1000 and 1300 K yielded similar crecp strengths for both materials, while tensile creep rupture testing indicated that the yttria-containing alloy was slightly stronger than the Y2O3-free version. Both compression and tensile testing showed two deformation regimes; whereas the stress state did not affect the high stress exponent (n ≍ 10) mechanism, the low stress exponent regime n was ∼6 in tension and ∼2 in compression. The strengths in tension were somewhat less than those measured in compression, but the estimated activation energies (Q) of ∼600 kJ/mol for tensile testing were closer to the previously measured values (∼700 kJ/mol) for NiAl-AlN and very different from the Q's of 400 and 200 kJ/mol for compression tests in the high and low stress exponent regimes, respectively. A Larson-Miller comparison indicated that cyromilling can produce an alloy with long-term, high-temperature strength at least equal to conventional superalloys.

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Heidarian, Javad, and Aziz Hassan. "Improving heat aging and mechanical properties of fluoroelastomer using carbon nanotubes." Polish Journal of Chemical Technology 19, no. 1 (March 28, 2017): 132–42. http://dx.doi.org/10.1515/pjct-2016-0050.

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Abstract Carbon nanotube (CNT)-, carbon black (CB)-filled fluoroelastomer (FE) and unfilled-FE compounds were prepared (CNT/FE, CB/FE and FE). The compounds were subjected to heat air aging and characterized by tensile test and X-Ray Diffraction (XRD) analysis. Results show that CNT improved tensile properties of FE before and after aging. All samples show stress induced crystallization (SIC) during tension. XRD results show that under all conditions, the crystals were in the form of γ-phase. For both aged and un-aged specimens, the degree of crystallinity (Xc) is low. After tensile stretching, Xc of un-aged specimens increases tremendously, with larger crystal size. Under the same conditions, the order of elongation at break (EL) was FE > CB/FE > CNT/FE. Normal modulus (NM) and tangent modulus (TM) at the same conditions was in the order of CNT/FE > CB/FE > FE. Tensile strength had the order of CNT/FE > CB/FE > FE.

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Wiater, Agnieszka, and Tomasz Siwowski. "Comparison of Tensile Properties of Glass Fibre Reinforced Polymer Rebars by Testing According to Various Standards." Materials 13, no. 18 (September 16, 2020): 4110. http://dx.doi.org/10.3390/ma13184110.

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The widespread use of glass fibre reinforced polymer (GFRP) bars in reinforced concrete (RC) elements has yet been limited due to the anisotropic and non-homogeneous material behaviour of GFRP. The material characteristics of GFRP bars from different manufacturers vary as a function of several factors. Several standards have developed various procedures to investigate the mechanical characteristics of GFRP bars, but universal methods to test different types and diameters of GFRP bars in tension have not been fully developed. Due to the lack of such a standardized test procedure, there are some doubts and gaps in terms of the behaviour of GFRP bars in tension, which has led to lack of reliable information on their tensile properties. The determination of tensile characteristics of GFRP bars, including the tensile strength, modulus of elasticity, and ultimate strain, according to various test standards, is the main subject of the paper. This paper reports test results for tensile characterization obtained on four types of GFRP bars from four manufacturers with six various diameters. Moreover, the study compares various test procedures according to seven standards to characterize the tensile properties of GFRP bars, to examine the proposed test procedures, and to reveal main differences.

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Journal articles on the topic 'TENSILE PROPERTIES'

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