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Добірка наукової літератури з теми "SINGLE EDGE-NOTCHED BEAM"

Автор: Grafiati

Опубліковано: 16 січня 2024

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Статті в журналах з теми "SINGLE EDGE-NOTCHED BEAM"

1

Špaková, Jana, and Ján Dusza. "Comparison of R-Curve Behavior of Si₃N₄ Measured by Indentation Method and Single-Edge V-Notched Beam Technique (SEVNB)." Key Engineering Materials 409 (March 2009): 308–12. http://dx.doi.org/10.4028/www.scientific.net/kem.409.308.

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Study compare R-curve behaviour of silicon nitride obtained using Vickers indented beam specimens and single edge V-notched beam (SEVNB). R-curve measurement realized by Vickers indented beam was reported by Krause. Crack growth using single edge V-notched beam was observed in situ. The indentation experiments, in comparison with SEVNB method revealed higher R-curve values (KR=3.3 – 4.8 MPa.m1/2). The discrepancy in the R-curve results is attributed to inaccuracy related to the determination of indentation toughness. The indentation fracture toughness may include the aspects of crack opening behaviour, residual indentation stress intensity.

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2

Zhou, Wu, Jinxin Huang, Wei Huang, and Dahsin Liu. "Dynamic fracture testing of polymethyl-methacrylate (PMMA) single-edge notched beam." Polymer Testing 91 (November 2020): 106833. http://dx.doi.org/10.1016/j.polymertesting.2020.106833.

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3

Lu, Wen Yan. "Failure Simulation of Single-Edge Notched Concrete Beam under Dynamic Tensile Loading." Applied Mechanics and Materials 638-640 (September 2014): 333–37. http://dx.doi.org/10.4028/www.scientific.net/amm.638-640.333.

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Crack growth of concrete beam under dynamic tensile loading is a typical discontinuous problem. It is difficult to realize the process of crack propagation using the conventional finite element method, but the extended finite element method (XFEM) is an effective method to analyze the fracture developed in recent years. This paper introduces the basic principle of XFEM and the analysis method of simulating concrete cracking and crack propagation with XFEM. At the end the crack expansion process of the concrete specimen with initial crack and dynamic load is done. The influence of crack propagation on concrete beam stresses and displacements and the crack propagation laws under dynamic tension is studied. The case shows the unique advantage of XFEM in the crack propagation analysis field.

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4

Bai, Haoran, Zhanyu Wang, Sangyu Luo, Zhaoliang Qu, and Daining Fang. "A modified single edge V-notched beam method for evaluating surface fracture toughness of thermal barrier coatings." Applied Mathematics and Mechanics 44, no. 5 (April 23, 2023): 693–710. http://dx.doi.org/10.1007/s10483-023-3001-6.

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AbstractThe surface fracture toughness is an important mechanical parameter for studying the failure behavior of air plasma sprayed (APS) thermal barrier coatings (TBCs). As APS TBCs are typical multilayer porous ceramic materials, the direct applications of the traditional single edge notched beam (SENB) method that ignores those typical structural characters may cause errors. To measure the surface fracture toughness more accurately, the effects of multilayer and porous characters on the fracture toughness of APS TBCs should be considered. In this paper, a modified single edge V-notched beam (MSEVNB) method with typical structural characters is developed. According to the finite element analysis (FEA), the geometry factor of the multilayer structure is recalculated. Owing to the narrower V-notches, a more accurate critical fracture stress is obtained. Based on the Griffith energy balance, the reduction of the crack surface caused by micro-defects is corrected. The MSEVNB method can measure the surface fracture toughness more accurately than the SENB method.

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5

Kim, Jae Hoon, Duck Hoi Kim, Nam Su Rho, Young Shin Lee, Song Heo Koo, and Soon Il Moon. "An Evaluation of Fracture Toughness of Glass-Filled Ceramic Using Notched Specimen." Key Engineering Materials 326-328 (December 2006): 927–30. http://dx.doi.org/10.4028/www.scientific.net/kem.326-328.927.

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The objective of this study is to evaluate the mechanical properties of static, quasidynamic and dynamic fracture toughness of glass-filled ceramic as promising structural material for a dome port cover of a ramjet engine system. Static and quasi-dynamic tests were carried out using SEPB (Single Edge Pre-cracked Beam) specimens. Static and dynamic fracture toughness tests were also performed using ASTM and strain gage methods with SENB (Single Edge Notched Beam) specimens machined with various notch radii. The critical notch radius was evaluated. Below the critical notch radius, the static fracture toughness of the SENB specimen well agreed with that of the SEPB specimen.

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6

Nindhia, Tjokorda Gde Tirta, and Tanja Lube. "Single Edge Precrack V-Notched Beam (SEPVNB) Fracture Toughness Testing on Silicon Nitride." Materials Science Forum 962 (July 2019): 205–9. http://dx.doi.org/10.4028/www.scientific.net/msf.962.205.

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The previous Measurement of fracture toughness test by using bright indentation for precracked beam method (ASTM C1421) was found difficult to be carried out due to difficulty in precrack generation and measurement of the crack size. In this research single edge precrack V-notch beam (SEPVNB) is introduced as an alternative to solve the problem from previous standardized method. A real crack that can created with referred size is recognized as the best condition for fracture toughness test. The material prepared for this purpose was silicon nitride (Si3N4) produced by CeramTec (Plochingen, Germany) under the name SL200 B. It is a gas pressure sintered ceramic containing 3 wt.% Al2O3 and 3 wt.% Y2O3. The V Notch was prepared by using razor blade with diamond paste following ISO/FDIS 23146 standard preparation with more addition on precrack introduction. The precrack was introduced by so called opposite roller loading. The fracture toughness test was carried out by following procedure in ISO/FDIS 23146 . The result then was compared for validation with both single edge V-notch beam standard (ISO/FDIS 23146 ) and Surface crack in Flexure SCF (ASTM C 1421). The result of fracture toughness by using method that is introduce in this research is found 5.8270.275 MPa1/2 which is close to the result of SCF (5.335 0.222 MPa1/2). Meanwhile the value of fracture toughness by using V-notch beam is 4.9130.098 MPa1/2

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7

AWAJI, Hideo, Tadao WATANABE, Tatsuya YAMADA, Yoshihisa SAKAIDA, Hiromiti TAMIYA, and Heizaburo NAKAGAWA. "Evaluation of fracture toughness by a single-edge V-notched beam method." Transactions of the Japan Society of Mechanical Engineers Series A 56, no. 525 (1990): 1148–53. http://dx.doi.org/10.1299/kikaia.56.1148.

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8

Petersen, DR, RE Link, MP Wagoner, WG Buttlar, and GH Paulino. "Development of a Single-Edge Notched Beam Test for Asphalt Concrete Mixtures." Journal of Testing and Evaluation 33, no. 6 (2005): 12579. http://dx.doi.org/10.1520/jte12579.

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9

Awaji, Hideo, and Yoshihisa Sakaida. "V-Notch Technique for Single-Edge Notched Beam and Chevron Notch Methods." Journal of the American Ceramic Society 73, no. 11 (November 1990): 3522–23. http://dx.doi.org/10.1111/j.1151-2916.1990.tb06490.x.

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10

Tatarko, Peter, Zdeněk Chlup, and Ján Dusza. "Microstructure, Fracture and Damage Mechanisms in Rare-Earth Doped Silicon Nitride Ceramics." Key Engineering Materials 465 (January 2011): 93–96. http://dx.doi.org/10.4028/www.scientific.net/kem.465.93.

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Influence of rare-earth oxide additives on the strength, fracture toughness and tribological behaviour of hot-pressed Si3N4 and Si3N4/SiC micro/nano-composites has been investigated. Four-point bending mode and ball on disc methods have been used for strength and wear tests and Single-Edge V-Notched Beam, Chevron Notched Beam, Indentation Strength and Indentation Fracture techniques for fracture toughness measurement. Fractography has been used to characterize strength limiting defects, fracture micromechanisms and damage mechanisms during the wear test. The strength values were strongly influenced by the present processing flaws. Wear behavior is significantly influenced by the chemical composition and by the microstructure of the materials.

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Більше джерел

Дисертації з теми "SINGLE EDGE-NOTCHED BEAM"

1

坂井田, 喜久, Yoshihisa SAKAIDA, 啓介田中 та Keisuke TANAKA. "多孔質セラミックスの破壊靭性評価". 日本機械学会, 2001. http://hdl.handle.net/2237/9161.

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2

SAKAIDA, Yoshihisa, and Keisuke TANAKA. "Evaluation of Fracture Toughness of Porous Ceramics." The Japan Society of Mechanical Engineers, 2003. http://hdl.handle.net/2237/9181.

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3

Baliarsingh, Avaya Kumar. "Prediction of fatigue crack propagation life in single edge notched beams using exponential model." Thesis, 2013. http://ethesis.nitrkl.ac.in/5385/1/211ME1344.pdf.

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Metal beams are extensively used in structures, automobile sectors and machine components. Some of their applications include connecting rod of IC engine, shafts, axles, and gears, structures members of bridges and also components of machines. Most of them experience fluctuating or cyclic load condition in their service life‟s such loading conditions may initiate a crack and cause fatigue crack growth. The monitoring and modeling of fatigue crack growth are necessary for the stability and safety of machines and structures. In the present investigation an attempt has been made to develop a fatigue life prediction methodology by using an Exponential Model in single edge notched (SEN) cracked beams. The predicted results are compared with experimental crack growth data. It has been observed that the results obtained from the models are in good agreement with experimental data.

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Частини книг з теми "SINGLE EDGE-NOTCHED BEAM"

1

Chen, Chun Hong, and Hideo Awaji. "Novel Estimation of Critical Frontal Process Zone of Ceramics by a Single-Edge V-Notched-Beam Technique." In High-Performance Ceramics III, 1745–50. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-959-8.1745.

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2

Li, Hewenxuan, and David Chelidze. "Fatigue Damage of a Single-Edge Notched Beam Specimen Under Variable Amplitude Loading with Similar Probabilistic and Cycle Counting Statistics." In Nonlinear Structures & Systems, Volume 1, 301–5. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-47626-7_44.

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3

Rahul, G. R., V. Jayaram, and S. Bose. "Dependence of Crack Velocity on Stress Intensity Factor in PMMA Using Single-Edge-Notched Clamped Beams." In Advances in Structural Integrity, 205–14. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-7197-3_18.

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Тези доповідей конференцій з теми "SINGLE EDGE-NOTCHED BEAM"

1

Dai, Qingli, and Kenny Ng. "Damage investigation of single-edge notched beam tests with concrete specimens using acoustic emission techniques." In SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, edited by Tzu Yang Yu, Andrew L. Gyekenyesi, Peter J. Shull, Aaron A. Diaz, H. Felix Wu, and A. Emin Aktan. SPIE, 2013. http://dx.doi.org/10.1117/12.2013879.

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2

Wagoner, M. P., W. G. Buttlar, and G. H. Paulino. "Development of a Single-Edge Notched Beam Test for the Study of Asphalt Concrete Fracture." In Geo-Frontiers Congress 2005. Reston, VA: American Society of Civil Engineers, 2005. http://dx.doi.org/10.1061/40776(155)11.

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3

Gražulytė, Judita, and Audrius Vaitkus. "Analysis of Methods and Criteria for Evaluation of Bitumen Performance at Low Temperatures." In Environmental Engineering. VGTU Technika, 2017. http://dx.doi.org/10.3846/enviro.2017.137.

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Анотація:

Thermal cracking is the dominant pavement failure in the cold regions. After each winter, the newly appeared cracks have to be sealed. However, after a few years depending on the sealing method the previously sealed cracks have to be resealed. It results in high maintenance budget and human resources. The appropriate bitumen selection on the basis of bitumen performance at low temperatures can reduce the effect of thermal cracking. For this purpose, number of methods are developed such as Fraass test, bending beam rheometer (BBR) test, direct tension (DT) test, asphalt binder cracking device (ABCD), dynamic shear rheometer using 4 mm diameter parallel plates (4-mm DSR) test, single-edge-notched bending (SENB) test, doubleedge- notched tension (DENT) test and spectral analysis of acoustic emission (AE). This paper presents the analysis of different tests for the evaluation of the bitumen performance at low temperatures, highlights their advantages and disadvantages and gives their limiting criteria. These limiting criteria are usually used to determine the critical cracking temperature, which is defined as the lowest temperature at which bitumen can withstand induced thermal stresses.

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4

Choi, Seong-Min, Masato Okamoto, and Hideo Awaji. "A Novel Technique for Estimation of Critical Frontal Process Zone Size in Ceramics." In ASME Turbo Expo 2002: Power for Land, Sea, and Air. ASMEDC, 2002. http://dx.doi.org/10.1115/gt2002-30508.

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A novel technique for estimating the critical size of the frontal process zone in ceramics was proposed using a single-edge V-notched beam (SEVNB) test method. A three-point flexure test was carried out on a silicon nitride and two kinds of graphite test specimens with sharp V-shaped notches whose depths varied from 20 to 1,500 μm. The critical local stress was calculated at a critical distance from the notch tip. The critical size of the frontal process zone was determined as the distance between the notch tip and the point where the critical local stress had the same value as the flexural strength of test specimens without notches. The relationship among the critical size of the frontal process zone, the fracture toughness, and the flexural strength was discussed.

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5

Furmanski, Jevan, Peter Sarosi, Cary Marzinsky, Don Carpenter, and Neeraj Thirumalai. "Plastic Constraint-Matched Pin-Loaded SENT Specimen for Fracture Analysis of Radially Growing Longitudinal Cracks in Thin-Walled Piping." In 2020 13th International Pipeline Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/ipc2020-9789.

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Abstract In recent years increased attention has been given to the transferability of standardized fracture test data to thin-walled pressurized equipment. For smaller diameter piping, for example, standard test specimens loaded in “hoop” tension are not possible due to pipe curvature and thinner wall thickness (often less than 1/3 inch). Further, it is not clear that standardized fracture specimens produce transferrable results to the seam weld fracture problem due to low plastic constraint, which is exacerbated in thin wall pipe. Single-edge notched tension (SENT) specimens were fabricated by extracting a segment pipe wall and finishing to a parallel piped incorporating nearly all the wall thickness. These segments were electron beam welded to low carbon steel grip ends to produce only localized heat affected zone without affecting the test section. The result is a nearly ideal pin-loaded SENT specimen for radial fracture testing. This geometry was evaluated with 2D and 3D nonlinear finite element analysis in Abaqus, and plastic constraint matching was evaluated compared to a thin-walled pipe under internal pressure with a radially growing crack. A nearly ideal plastic constraint match between the pin-loaded SENT and radial seam weld crack was confirmed up to about 500 psi-in, which is substantially beyond a typical JIc in the X52 steel used in the analysis. Thus, pinned SENT testing is recommended for evaluation of radial fracture in thin-walled piping.

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