Journal articles: 'Tensile test'

1

Petch, N. J., and R. W. Armstrong. "The tensile test." Acta Metallurgica et Materialia 38, no. 12 (December 1990): 2695–700. http://dx.doi.org/10.1016/0956-7151(90)90283-m.

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Liao, Wen-Cheng, Po-Shao Chen, Chung-Wen Hung, and Suyash Kishor Wagh. "An Innovative Test Method for Tensile Strength of Concrete by Applying the Strut-and-Tie Methodology." Materials 13, no. 12 (June 18, 2020): 2776. http://dx.doi.org/10.3390/ma13122776.

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Tensile strength is one of the important mechanical properties of concrete, but it is difficult to measure accurately due to the brittle nature of concrete in tension. The three widely used test methods for measuring the tensile strength of concrete each have their shortcomings: the direct tension test equipment is not easy to set up, particularly for alignment, and there are no standard test specifications; the tensile strengths obtained from the test method of splitting tensile strength (American Society for Testing and Materials, ASTM C496) and that of flexural strength of concrete (ASTM C78) are significantly different from the actual tensile strength owing to mechanisms of methodologies and test setup. The objective of this research is to develop a new concrete tensile strength test method that is easy to conduct and the result is close to the direct tension strength. By applying the strut-and-tie concept and modifying the experimental design of the ASTM C78, a new concrete tensile strength test method is proposed. The test results show that the concrete tensile strength obtained by this proposed method is close to the value obtained from the direct tension test for concrete with compressive strengths from 25 to 55 MPa. It shows that this innovative test method, which is precise and easy to conduct, can be an effective alternative for tensile strength of concrete.

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Malý, Pavel, František Lopot, Vojtěch Dynybyl, and Jiří Sojka. "Clinched Joint Tensile Test." Applied Mechanics and Materials 827 (February 2016): 23–26. http://dx.doi.org/10.4028/www.scientific.net/amm.827.23.

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This paper describes the experimental shear test of clinched connection of two sheet metal plates. The force-displacement characteristic was obtained using the set of six testing specimens. Also the properties of the clinched joint were identified and were used in the following work including simulation methods and calculations.

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Závacký, Martin. "A COMPARISON OF TESTING METHODS FOR DETERMINATION OF SPRAYED CONCRETE TENSILE STRENGTH." Acta Polytechnica CTU Proceedings 23 (July 30, 2019): 54–57. http://dx.doi.org/10.14311/app.2019.23.0054.

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Sprayed concrete is important construction material in tunnelling. Primary lining is essential in NATM where the sprayed concrete can be loaded by tension due to bending moments. The tension is common reason of failure because concrete has a relatively low tensile strength. The tensile strength is usually determined by splitting tensile test in laboratory. However, the results can be distorted because the specimen is not loaded by pure tension in this case. The paper compares results of concrete tensile strength determined by two methods: indirect by the splitting tensile test and direct by the modified tensile test.

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Hong, Zhipeng, Mingming He, Mingchen Ding, Xiaoyue Yu, Liang He, Yinuo Zhang, and Zhaoyu Wen. "A Direct Measurement Method for the Uniaxial Tensile Strength of Rock." Buildings 14, no. 12 (December 6, 2024): 3903. https://doi.org/10.3390/buildings14123903.

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A universally applicable direct tension test method is proposed in this paper based on the concept of “compression-to-tension”. Using this method, one or two typical rocks were selected for each of the three types of rocks. The testing results of the direct tension method proposed were compared with the internationally recommended Brazilian splitting method to validate the feasibility of the direct tension method. Results showed that the tensile strengths of six typical rocks were consistent using the direct tensile test method proposed in this study and the Brazilian splitting method recommended internationally. The direct tensile strength deviation coefficient (Cv) of the six types of rocks was less than 0.1, indicating very small variability. In this study, the deviation coefficient (Cv) of the axial displacement corresponding to the tensile strength in both the direct tensile and indirect tensile tests was also less than 0.1, reflecting minimal variability. This shows the consistency of the two tensile test results to a certain extent, and also shows that the direct tensile test method is feasible to determine the tensile strength of rock.

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Man, Ke, Zhifei Song, and Xiaoli Liu. "Dynamic Tensile Test of Granite and Its Tensile Sensitivity." Advances in Civil Engineering 2020 (October 22, 2020): 1–9. http://dx.doi.org/10.1155/2020/8837865.

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Through the dynamic splitting tensile test under various loading rates, different mechanical parameters have been analyzed; not only the dynamic peak stress but also the dynamic peak strain has a good linear relationship with the strain rate. The tensile sensitivity obtained from the dynamic tensile test increases with strain rate gradually, and it shows a nearly linear relation, which fully indicates that the granite specimen is a strain rate sensitive material. Moreover, with the numerical simulation, the damage area of the specimen is consistent with the actual failure mode of the specimen. Furthermore, the influenced factor on the dynamic tensile strength is discussed, which illuminates that the most fundamental reason of the rate effect is that the stress wave velocity is faster than the crack propagation velocity in the specimen during the impact process.

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Elfmark, Jiří, and Petr Staněk. "Analysis of tensile test beyond the ultimate tensile strength." Journal of Materials Processing Technology 34, no. 1-4 (September 1992): 211–17. http://dx.doi.org/10.1016/0924-0136(92)90109-6.

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Kuroda, Masatoshi, Shinsuke Yamanaka, Daigo Setoyama, Masayoshi Uno, Kiyoko Takeda, Hiroyuki Anada, Fumihisa Nagase, and Hiroshi Uetsuka. "Tensile test of hydrided Zircaloy." Journal of Alloys and Compounds 330-332 (January 2002): 404–7. http://dx.doi.org/10.1016/s0925-8388(01)01493-1.

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Plavanescu (Mazurchevici), Simona, Fabrizio Quadrini, and Dumitru Nedelcu. "Tensile Test For Arboform Samples." ACTA Universitatis Cibiniensis 66, no. 1 (July 1, 2015): 147–52. http://dx.doi.org/10.1515/aucts-2015-0044.

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Abstract Petroleum-based plastic materials constitute a major environmental problem due to their low biodegradability and accumulation in various environments. Therefore, searching for novel biodegradable plastics is received particular attention. Our studied material, “Liquid wood” produced from lignin, natural fibres and natural additives, is completely biodegradable in natural environment, in normal conditions. This paper presents the behaviour of Arboform and Arboform reinforced with Aramidic Fibers tensile test analysis. Experimental data show that the tensile strength reached an average value of 15.8 MPa, the modulus of elasticity after tests is 3513.3MPA for Arboform and for the reinforcement the tensile strength is 23.625MPa, the modulus of elasticity after tests is 3411.5MPA, the materials present a brittle behaviour. The high mechanical properties of newly developed material, better than of other ordinary plastics, recommend it as a potential environment-friendly substituent for synthetic plastics, which are present in all fields of activity.

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Mott, P. H., J. N. Twigg, D. F. Roland, H. S. Schrader, J. A. Pathak, and C. M. Roland. "High-speed tensile test instrument." Review of Scientific Instruments 78, no. 4 (2007): 045105. http://dx.doi.org/10.1063/1.2719643.

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Petersen, DR, RE Link, H. Wang, R. Bouchard, R. Eagleson, P. Martin, and WR Tyson. "Ring Hoop Tension Test (RHTT): A Test for Transverse Tensile Properties of Tubular Materials." Journal of Testing and Evaluation 30, no. 5 (2002): 382. http://dx.doi.org/10.1520/jte12328j.

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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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Lämsä, Janne, Anu Väisänen, Jouko Heikkala, and Antti Järvenpää. "Correlation of Tensile Test Parameters and Bendability of High-Strength Steels." Key Engineering Materials 554-557 (June 2013): 12–20. http://dx.doi.org/10.4028/www.scientific.net/kem.554-557.12.

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The aim of the study was to investigate correlation between bendability and tensile properties of high-strength steels. Strength and elongation in tensile test have traditionally been basic values in evaluating bending properties. Advanced high-strength (AHS) steels often have tendency for strain localization, causing risk of fractures and impairing the shape of the bend. Practice has shown that tensile test results, indicating bendability well, are not sufficiently accurate when using AHS steels. Since tensile test is a fast, simple and cheap testing method, it would be beneficial to rework it to suit better for predicting of bendability. In this study, the usability of tensile test results to predict failures in bending AHS steels has been investigated. The most common failures and failure mechanisms in bending are also presented. Test materials used were 6 mm thick AHS wear-resistant, protection and structural steels with good and poor bending properties. Minimum bending radii were determined and then compared with ten-sile test results to estimate the correlation. Conventional tensile test results, fracture surfaces and necking through width and thickness were analyzed. Correlation coefficient for measured tension properties and minimum bending radius was calculated. Results showed that in tensile test, have the best correlation with minimum bending radius with necking through the thickness and actual strain in necking area.

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Fan, Qi, Shuan Cheng Gu, Bo Nan Wang, and Rong Bin Huang. "Two-Parameter Parabolic Mohr Strength Criterion Applied to Analyze the Results of the Brazilian Test." Applied Mechanics and Materials 624 (August 2014): 630–34. http://dx.doi.org/10.4028/www.scientific.net/amm.624.630.

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Geotechnical engineering in tension damage is one of the major failure modes. For a long time, Brazil test has practical significance and wide application value that has been used to determine the tensile strength of rock. When the specimen center destroyed tensile stress play a major role that is the theoretical basis of Brazil test. This is uniaxial tensile stress state, but the reality is complex stress state. Theoretical analysis shows that the Brazilian test does not truly reflect the tensile strength of rock, its test results to error. In this paper, two-parameter parabolic Mohr strength criterion for this error analysis, and propose amendments to the formula.

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Das, B. M., S. C. Yen, and R. N. Dass. "Brazilian tensile strength test of lightly cemented sand." Canadian Geotechnical Journal 32, no. 1 (February 1, 1995): 166–71. http://dx.doi.org/10.1139/t95-013.

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Tensile stress – tensile strain relationships for lightly cemented sand specimens obtained by conducting Brazilian tensile strength tests have been presented. The tensile strain measurement was done by using an optical image analysis technique. In addition to the tensile strength tests, some unconfined compression tests on sand specimens with varying cement contents were also performed. Based on the results of the above tests, a nondimensional tensile stress – tensile strain relationship has been presented. Also the variation of the tensile and compressive strength and strain ratios with varying cement contents have been discussed. Key words : lightly cemented sand, optical image analysis, tensile strain, tensile strength, unconfined compression strength.

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Shuaiquan, Zhao, Chang Yuping, Yang Yadie, Zhang Minglonghai, Hasan Kamrul, and Hu Hong. "Auxetic behavior of warp knitted fabric under repeating tension." Textile Research Journal 91, no. 15-16 (January 25, 2021): 1732–41. http://dx.doi.org/10.1177/0040517521989277.

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In our previous study, a novel class of auxetic warp knitted fabrics were developed and their auxetic behaviors were studied under a single tensile test. However, during daily use, the fabrics are usually subjected to repeating tension rather than single tension. Therefore, the durability of the fabrics’ auxetic performance is of great importance. So far, the auxetic behavior of fabrics under repeating tension has not systematically been investigated. In this paper, we report a study on the auxetic behavior of warp knitted fabrics under repeating tension. All the fabric samples were subjected to a repeating tensile test within a tensile strain of 25% until 100 tensile cycles. The results show that the fabrics can keep their auxetic effect in both course and wale testing directions after 100 tensile cycles, and the auxetic effect in the wale direction is retained longer under higher tensile strains than that under lower tensile strains with the increase of tensile cycles. The results also indicate that auxetic stability in the course direction is much better than that in the wale direction. We hope that this study can offer useful information to improve the auxetic stability of auxetic fabrics for practical use.

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Zeng, Zhao Tian, Hai Bo Lu, Jin Jin Zhang, and Yan Lin Zhao. "Effects of Sample Preparation Methods on Tensile Strength of Red Clay." Applied Mechanics and Materials 204-208 (October 2012): 3847–51. http://dx.doi.org/10.4028/www.scientific.net/amm.204-208.3847.

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Effects of two sample preparation methods on tensile strength of red clay are studied. The first method adopts standard layered-bumping to make sample whose layer interfaces are vertical to tensile force. The second method uses compaction apparatus to prepare big sample and the big sample is cut to prepare triaxial sample whose layer interface is parallel to tensile force. Test results indicate that the layer interfaces of soil sample have large influence on the single axle tension test, because the results of the sample prepared by 1st method have large dispersion and low strength, while the results of the sample prepared by 2nd method are just the opposite.Moreover,the layer interfaces of soil sample have little influence on the unconfined compressive strength test, and the results of the tensile test and unconfined compressive strength test of the samples prepared by 2nd method meet with the Griffith Criterion, so the samples of uniaxial tension test should be prepared by 2nd method.

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Rao, Qiuhua, Zelin Liu, Chunde Ma, Wei Yi, and Weibin Xie. "A New Flattened Cylinder Specimen for Direct Tensile Test of Rock." Sensors 21, no. 12 (June 17, 2021): 4157. http://dx.doi.org/10.3390/s21124157.

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In recent decades, researchers have paid more attention to the indirect tensile test than to the direct tensile test (DTT) of rocks, mainly due to difficulties in the alignment and the stress concentration at the end of an intact cylindrical specimen. In this paper, a new flattened cylinder specimen and a clamp device were designed to obtain the true tensile strength of the rock in DTT. Stress distributions of the specimen with different lengths (l) and cutting thicknesses (t) were analyzed, and damage processes of the specimen were monitored by the Digital Image Correlation (DIC), the fractured sections were also scanned. Different mechanical parameters were also obtained by the DTT of the flattened cylinder specimens and the intact cylinder specimens, as well as the Brazilian disc. Research results show that the tensile strength obtained by DTT is smaller than the Brazilian disc and is slightly greater than the intact cylindrical specimen. The flattened cylinder specimen with 0.20 ≤ 2t/D < 0.68 and 0.10 ≤ l/D ≤ 0.20 is recommended to measure the true tensile strength of rock material in DTT. This new shape of the specimen is promising to be extended in the uniaxial or triaxial direct tension test.

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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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Pichugin, Dmitrii Alekseevich, Anastasiya Surikova, and Vladimir Alekseevich Surikov. "Analysis of hydraulic concrete strength test methods." Vestnik of Astrakhan State Technical University. Series: Marine engineering and technologies 2022, no. 2 (May 31, 2022): 33–43. http://dx.doi.org/10.24143/2073-1574-2022-2-33-43.

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Today, methods of determining the tensile strength of concrete are of considerable interest. These methods using the anisotropy of brittle materials and, in particular, concrete, with respect to compressive and tensile stresses, make it possible, based on the findings of the theory of elasticity, to determine the tensile strength when tested with a compressive load, which can be transferred to the sample much more easily than tensile forces. The results of tests of concrete by the method of compression of cylindrical samples and crushing of cube samples with hewn ribs between two round metal rods lying in the same plane closely match the tensile strength values obtained with direct tension. For all studied compositions, the value of the strength ratio increases as the water-cement ratio increases, both for concrete without additives and with additives of surfactants. Using additives of surface-active organic substances without changing the dependence of the strength ratio on the hardening time makes it smoother. It has been found that the fast decreasing value of the strength ratio, hardening period that corresponds to its minimum value, and further increase or stabilization of Rp / Rc depend on a number of factors of the cement used, storage conditions of surfactant additives, composition, etc. Under the influence of the different factors the position of the characteristic points on the curve of the strength ratio dependence on the hardening time can change and obey the general pattern. For concretes and mortars, the decrease in the strength ratios in the transition from 28 days to the age of 90 days makes up to 10–25% (and in some cases much more), which must be taken into account in appropriate cases when designing structures.

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Park, Jun Hyub, Yun Jae Kim, Man Sik Myung, Chang Seung Lee, Sung Hoon Choa, and Nam Sup Choi. "Novel Test Procedure of Tensile Test for MEMS Materials." Key Engineering Materials 321-323 (October 2006): 136–39. http://dx.doi.org/10.4028/www.scientific.net/kem.321-323.136.

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This paper describes a novel test procedure, new structure of specimen easy to manipulate, align and grip a thin-film and test machine for a tensile and fatigue test. For the proposed specimen, the surroundings of the specimen including the side support strips except for six bridges are etched during the fabrication of the specimen, which in turn makes it possible to cut off easily the specimen from the wafer by minimizing a damage to the test film and also possible to produce the specimen in mass production. For the present specimen, a small hole is made at the grip end and using a small pin for setting the specimen onto the tester, the setting process and alignment of specimen is much easier, compared to the specimen proposed by Sharpe et al. To gain confidence in reliability of testing results, pre-test using the Al-3%Ti is performed, which is widely used in the RF switch and other MEMS devices. Tensile tests are performed, from which tensile strengths of the Al-3%Ti are measured as 343±16.22MPa at 200μm width and 1.1μm thickness.

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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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Mikolaenko, Vadim. "Computer simulation of superplastic tensile test." Journal of Physics: Conference Series 1740 (January 2021): 012022. http://dx.doi.org/10.1088/1742-6596/1740/1/012022.

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Committee Of Testing For Light Meta. "Tensile test of aluminum alloy tube." Journal of Japan Institute of Light Metals 37, no. 11 (1987): 757–61. http://dx.doi.org/10.2464/jilm.37.757.

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Khlif, Mahomet, N. Masmoudi, and Ch Bradai. "POLYPROPYLENE TENSILE TEST UNDER DYNAMIC LOADING." Journal of KONES. Powertrain and Transport 21, no. 1 (December 28, 2014): 131–38. http://dx.doi.org/10.5604/12314005.1134062.

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Stupishin, Leonid U., S. G. Emelyeanov, E. V. Savelyeva, and F. V. Altuhov. "Tensile Test Method for Basalt Roving." Key Engineering Materials 821 (September 2019): 506–11. http://dx.doi.org/10.4028/www.scientific.net/kem.821.506.

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In the construction industry there is no method for tensile testing of materials of basalt complex filaments of small diameters and roving. The existing methods of testing fibers and roving presented in regulatory documents are intended for textile materials and materials based on fiberglass. The studies cited in the article were aimed at studying the strength properties of roving materials and a multifilament yarn based on basalt fibers, as well as working out methods for testing them. The article presents studies of the strength characteristics of roving and complex yarn based on basalt fiber, on which testing of basalt material samples was tested. The strength characteristics of various forms of basalt materials for various adhesive processing were obtained. The applied experimental test procedure was appreciated positively.

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Ohoka, M., A. Funato, and Y. Takahashi. "Tensile test using hollow cylindrical specimen." International Journal of Rock Mechanics and Mining Sciences 34, no. 3-4 (April 1997): 88.e1–88.e11. http://dx.doi.org/10.1016/s1365-1609(97)00141-x.

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Katsaragakis, E. S. "A new tensile test for concrete." Materials and Structures 20, no. 6 (November 1987): 463–66. http://dx.doi.org/10.1007/bf02472499.

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Sharifishourabi, G., S. Sharifi, A. Ayob, and M. Y. Yahya. "Tensile Test Machine for Unsymmetrical Materials." Experimental Mechanics 54, no. 4 (December 7, 2013): 689–94. http://dx.doi.org/10.1007/s11340-013-9825-3.

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Wang, Zhen-Ting, You-He Zhou, and Xiao-Jing Zheng. "Tensile test of natural microbiotic crust." CATENA 67, no. 2 (October 2006): 139–43. http://dx.doi.org/10.1016/j.catena.2006.03.009.

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Devries, K. L., K. C. Gramoll, and G. P. Andersen. "Analysis of adhesive tensile test methods." Polymer Engineering and Science 26, no. 13 (July 1986): 962–68. http://dx.doi.org/10.1002/pen.760261308.

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Kabancev, Oleg V., and Oleg A. Simakov. "Direct Tensile Test Method for Shotcrete." Buildings 14, no. 12 (November 21, 2024): 3713. http://dx.doi.org/10.3390/buildings14123713.

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This study substantiates the need for direct tensile strength testing of shotcrete and fiber-reinforced shotcrete, rather than relying on indirect methods, to accurately reflect material performance under biaxial stress conditions when used for structural reinforcement. Experiments on field specimens confirmed that tensile strength values derived through direct testing differ significantly from those calculated based on compressive strength. The study presents a new testing methodology with optimized specimen dimensions (32, 40, 50, and 82 mm diameter cylinders with length-to-diameter ratios of 3.0) to mitigate eccentricity effects, ensuring normal-section failure. Results show that tensile strength values for fiber-reinforced shotcrete with brass-coated fibers (13–15 mm length, 0.3–0.5 mm diameter, 30 kg/m3 dosage) reached 68 MPa, compared to 60 MPa for standard shotcrete, while basalt-fiber reinforcement (6 mm length, 1% by weight) resulted in 42 MPa. The initial modulus of elasticity for unreinforced shotcrete was 280 × 103 MPa, with fiber reinforcement slightly increasing this value to 287 × 103 MPa. The findings support a direct approach to testing, providing a foundation for developing predictive methodologies for fiber-reinforced shotcrete properties based on reinforcement type and dosage. These results are essential for applications such as seismic strengthening, where accurate tensile characteristics are critical for performance under dynamic loading.

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Assaad, M. C. "Mechanics of the Dynamic Flex Test." Tire Science and Technology 19, no. 4 (October 1, 1991): 237–47. http://dx.doi.org/10.2346/1.2141717.

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Abstract The dynamic flex test is a comparative test used for screening synthetic cords. The test objective is to subject the cord through accelerated test conditions as observed in an underinflated and deflected tire. This test ultimately determines the percent break strength retained for flexed synthetic tire cords. It consists of a two-layer composite laminate subjected to a constant tensile load while dynamically flexing around a spindle. After flexing for two to six hours (the time depends on the cord material and construction), the break strength is determined for the flexed and for an unflexed cord and the percent retained break strength is reported. The objective of this paper is to quantify the stress and strain distributions in the cord under conventional laboratory conditions and identify the conditions required for prescribing the desired tension and compression cyclic strain for a cord construction. The tension-compression behavior is controlled by the location of the neutral plane which, in turn, is a function of the static tensile load, fiber reinforcement and rubber matrix moduli, epi, geometry of the laminate cross section, and the diameter of the spindle.

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Vas, L. M., F. Ronkay, and T. Czigany. "Modelling tensile force oscillation during the tensile test of PET specimens." Express Polymer Letters 3, no. 2 (2009): 63–69. http://dx.doi.org/10.3144/expresspolymlett.2009.10.

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Kanlı, Emre, Furkan Parmaksız, Oğuz Koçar, Faruk Mert, and Nergizhan Anaç. "Effect of Dimensional Differences on Tensile Strength in Tensile Test Specimens." Gazi Journal of Engineering Sciences 10, no. 3 (December 31, 2024): 619–31. https://doi.org/10.30855/gmbd.0705ar13.

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Handana, M. A. P., B. Surbakti, D. D. Harisdani, R. Karolina, and D. Fahreza. "Tensile strength of various bamboo species tested with different shape of test specimens." Journal of Physics: Conference Series 2421, no. 1 (January 1, 2023): 012026. http://dx.doi.org/10.1088/1742-6596/2421/1/012026.

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Abstract Bamboo has a different tensile strength at the bottom, middle and top, both at the node and internode part of the bamboo. Tensile strength obtained by tension test with several standard testing methods that use different specimen shapes in the testing process. This study compared standard test methods that use dog bone-shaped specimens and strip-shaped specimens to see the correction of the tensile strength of bamboo from the same culm but tested differently. The test specimens are carried out from the area of Asahan Regency (including Tanjung Balai City), Batubara Regency, and Simalungun Regency, which are located in the eastern region of Sumatera Utara. The tension tests are carried out from the bottom, middle, and top section of the bamboo culm, and tested using a Universal Testing Machine. The average water content from bamboo species tested in this study is 14%. The strength ratio of the bottom, middle, and top section (B:M:T ratio) of dog bone-shaped specimens is 1.57: 1.24: 1, while B:M:T ratio of the strip-shaped specimen is 1.15: 1.05: 1. The tensile strength difference of dog bone-specimens from node and internode section is 31.89%, while the difference from the strip-shaped specimen is 13.81%. These results indicate that the bottom part of the bamboo culm has greater tensile strength, regardless of the shape of the specimens, followed by the middle part, and the top part respectively.

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Ifedi, O., Q. M. Li, and Y. B. Lu. "Further Investigation of the Hydrostatic Bulge Test in a Plasticity Laboratory." International Journal of Mechanical Engineering Education 37, no. 2 (April 2009): 159–74. http://dx.doi.org/10.7227/ijmee.37.2.7.

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In plasticity theory, the effective stress–strain curve of a metal is independent of the loading path. The simplest loading path to obtain the effective stress–strain curve is a uniaxial tensile test. In order to demonstrate in a plasticity laboratory that the stress–strain curve is independent of the loading path, the hydrostatic bulge test has been used to provide a balanced biaxial tensile stress state. In our plasticity laboratory we compared several different theories for the hydrostatic bulge test for the determination of the effective stress–strain curve for two representative metals, brass and aluminium alloy. Finite element analysis (FEA) was performed based on the uniaxial tension test data. It was shown that the effective stress–strain curve obtained from the biaxial tensile test (hydrostatic bulge test) had a good correlation with that obtained in the uniaxial tensile test and agreed well with the analytical and FEA results. This paper may be used to support an experimental and numerical laboratory in teaching the concepts of effective stress and strain in plasticity theory.

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Liu, Gang, Kai-Shu Guan, and Ji-Ru Zhong. "Application of Pre-Strained Steels in Empirical Correlation Between Small Punch Test and Uniaxial Tensile Test." Science of Advanced Materials 12, no. 6 (June 1, 2020): 892–98. http://dx.doi.org/10.1166/sam.2020.3746.

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In order to research the method of strength empirical correlation between conventional small punch test (SPT) and uniaxial tensile test, a series of austenitic stainless steel including pre-strained SUS304 have been tested in this study. The conventional SPT is conducted on a small disc-shaped specimen whose edge is firmly gripped by a die, and the specimen is deformed by a punch. The method of empirical correlation between SPT and uniaxial tensile test is a direct way to obtain the mechanical properties of materials. Through establishing the strength empirical correlation, it can achieve to calculate the strength of material by SPT which is nondestructive to equipments. However, the per-strained steels have never been tested in this method. This study is to fill that gap and to obtain the empirical correlation between SPT and uniaxial tensile test with pre-strained steel. In this study, a series of austenitic stainless steel including SUS304 after different levels of pre-strain were tested successively by uniaxial tensile test and SPT. It is found that the tensile strength obtained from uniaxial tensile test increases with the increasing levels of pre-strain. However, the maximum load obtained from prestrained SPT specimen does not increase with the increasing levels of pre-strain. It is contradictory to the linear relation between maximum load and tensile strength. According to the analysis of conventional discshaped SPT specimen, the directions of maximum load obtained from SPT and tensile strength from tensile test are not uniform. It results in the non-linearity between the maximum load and the tensile strength with pre-strained steel, and it indicates the pre-strained steel cannot be applied to the conventional disc-shaped SPT specimen. Furthermore, the prestrained steel is a typical kind of anisotropic material. Therefore, extending to anisotropic material, the conventional disc-shaped SPT specimen is not suitable for the method of strength empirical correlation.

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Nonomura, Toshiki, Tsuyoshi Kosaka, Tatsuya Kobayashi, Ikuo Shohji, and Muneyoshi Iyota. "Microstructure and Mechanical Properties of A6061/GA980 Resistance Spot Weld." Key Engineering Materials 966 (November 29, 2023): 25–30. http://dx.doi.org/10.4028/p-rue1zd.

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Resistance spot welding was performed on steel and an Al alloy to investigate the microstructural and mechanical properties of the joint. An Al-Mg-Si aluminum alloy A6061 and an alloyed zinc-plated steel sheet GA980 were used as specimens. Resistance spot welding was performed at welding currents of 16 kA, 20 kA, and 22 kA, welding time of 0.24 s, and welding pressure of 5 kN. To investigate the strength of the welds, the tensile shear test and the cross tension test were conducted, and the fatigue test was also conducted. The nugget diameter increased with an increase in the welding current. The tensile shear strength and cross tension strength increased with the increase in the welding current. In the tensile shear fatigue test, interface fracture was observed in the low cycle fatigue region. In the cross tension fatigue test, it was confirmed that the higher the welding current, the better the fatigue properties in the low-cycle fatigue region.

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Ju, Dong Ying, J. G. Wang, and Minoru Abe. "In Situ Stress Measurement Method Based on X-Ray Diffraction under Biaxial Tensile Loading." Materials Science Forum 675-677 (February 2011): 615–18. http://dx.doi.org/10.4028/www.scientific.net/msf.675-677.615.

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The purpose of this investigation is to detect damage from stress distribution in the surface of near pre-crack tip by using X-ray diffraction technique during biaxial tension test. An measurements apparatus to measure stress distribution along pre-crack direction was fabrication by use of a biaxial tensile test device and a stress analyzer based on single exposure technique with one position sensitive proportional counter. Stress distribution with different tensile applied stress ratios were measured during biaxial tension test. As results, the shape of actual stress was keeping increase with increasing tensile applied stress. At maximum applied stress, the residual stress increases with the increasing distance from the crack tip; after reaching a maximum it gradually diminish.

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Zhou, J., De Bin Shan, Bin Guo, and D. L. Ma. "Experimental Study on Specimen and Grain Size Effects in Uniaxial Tension Test of Aluminum Foil." Key Engineering Materials 344 (July 2007): 777–82. http://dx.doi.org/10.4028/www.scientific.net/kem.344.777.

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With the rapidly growing demand for the micro-thin-wall parts, the development of high accurate forming processes for very thin sheet or foil becomes more and more important. The aim of this study is to explore the effects of specimen width and grain size on tensile strength of aluminum alloy 3003 foil in uniaxial tension test. The problem was approached in two ways: firstly, by reduction of the specimen width, and secondly, by changing the grain size through annealing crystallization. The uniaxial tension tests were performed on an electronic universal material testing machine, in which a linear CCD based visual extensometer was used to measure deformation. The results show that the tensile strength decreases with decreasing specimen width or increasing surface-to-volume ratio. The tensile strength decreases with decreasing grain size for grain sizes larger than the specimen thickness.

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Qi, Zhiqiang, Cheng Zhang, Liang Qiao, Jian Qin, and Shunling Wang. "The Test Study on Tension-torsion Coupling Effect of ACSR in Overhead Transmission Lines." Journal of Physics: Conference Series 2731, no. 1 (March 1, 2024): 012027. http://dx.doi.org/10.1088/1742-6596/2731/1/012027.

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Abstract In order to analyze the relationship between the tensile and torsional characteristics of the Aluminum Conductor Steel Reinforced (ACSR), test research on the coupling effect of tension and torsion in conductors was carried out. A conductor tension-torsion coupling test device was designed, and selected the JL/G1A-630/45-45/7 ACSR as sample which is commonly used in ultra-high voltage AC engineering. The relationship between conductor tension, torque, and tensile strain, torsional strain was measured. And obtain the stiffness coefficients of conductor tension, torsion, and tension-torsion coupling. The testing results show that the tension and torque of the conductor gradually change from non-linear to linear under the action of tension or torsion deformation; The torsional stiffness Kφφ and tension-torsion coupling stiffness Kεφ when the conductor is turned to the right are greater than the corresponding stiffness when it is turned to the left.

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Zhao, Zhi Fang, Bo Pang, and Zhi Gang Zhao. "Fracture Behaviors of Dam and Wet-Sreening Concrete by Direct Tensile Test." Key Engineering Materials 400-402 (October 2008): 233–38. http://dx.doi.org/10.4028/www.scientific.net/kem.400-402.233.

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The emphasis of this paper is to experimentally study the fracture behaviors of dam and wet-screening concrete such as softening curve, uniaxial tensile strength , maximum crack width and fracture energy . The direct tension tests were performed on prismatic specimens with no initial notch include dam concrete specimens which size is 250mm×250mm×500mm and wet-screening concrete specimens which size is 150mm×150mm×300mm by employing a servo-hydraulic closed-loop testing machine with large stiffness. The uniaxial tensile load-strain curves, uniaxial tensile stress-strain curves, uniaxial tensile stress-deformation curves were acquired. On the basis of principle of fracture mechanics of concrete, the stress-crack width curves and the relative stress-relative crack width curves were obtained. Finally, the expressions of softening curves and fracture parameters such as , and of dam and wet-screening concrete were achieved. The relationships of the foregoing fracture parameters between dam concrete and wet-screening concrete were discussed in this paper. The achieved softening curves and fracture parameters can provide input data for the fracture simulating analysis of dam and wet-screening concrete.

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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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Makrides-Saravanos, Elli, and T. Rezansoff. "The effect of a chloride-based accelerating admixture on the tensile strength of concrete." Canadian Journal of Civil Engineering 12, no. 3 (September 1, 1985): 673–84. http://dx.doi.org/10.1139/l85-074.

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Compression and tension tests were performed on specimens made from high-early-strength concrete, where the strength acceleration was achieved by using a chloride-based accelerating admixture. Comparison with specimens made from concrete without the admixture showed that the concrete with the admixture was significantly weaker in tension for equal compressive strength.Curing times ranged from 3 days to 3 or 4 months while compressive strengths ranged from 16 to 37 MPa depending on the batch and the age at testing. Three types of tension tests, the standard split cylinder test, the standard modulus of rupture test, and a pull-out test were used in the study.Current design equations that relate tensile strength of concrete to the measured compressive strength may overestimate the actual tensile strength of high-early-strength concrete where acceleration is achieved through the addition of an admixture. These equations are found in provisions for anchorage, development, and splicing of reinforcement, shear and torsion strength, and the prediction of service load deflections. Key words: concrete, accelerated strength, tensile strength, admixtures, curing, splitting tensile strength, modulus of rupture, strength correlations.

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46

Uesugi, Kaoru, Yoshitake Akiyama, Takayuki Hoshino, Yoshikatsu Akiyama, Masayuki Yamato, Teruo Okano, and Keisuke Morishima. "Measuring Mechanical Properties of Cell Sheets by a Tensile Test Using a Self-Attachable Fixture." Journal of Robotics and Mechatronics 25, no. 4 (August 20, 2013): 603–10. http://dx.doi.org/10.20965/jrm.2013.p0603.

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In this paper, we present a tensile test system and a new self-attachable fixture for measuring mechanical properties of cell sheets. Previously when measuring the mechanical properties of cell sheets, the sheets would be damaged because they dried out. With our system, the tensile test can be carried out while the cell sheets are in the culture medium, so there is no damage by drying. Previously, it has also been difficult to attach a cell sheet in the tensile test system owing to the structure of the conventional fixture, and there has been no tensile test system which had a measurement range that covered the tension force range of the cell sheets. Therefore, we have addressed these problems by developing a self-attachable fixture and a tensile test system. To confirm suitability of the fixture and test system, we measured mechanical properties of two different kinds of cultured cell sheets, C2C12 (cells mouse myoblast cells) and NIH-3T3 (3T3) cells (mouse fibroblast cells), and of the same kinds of sheets treated with cytochalasin-D. We confirmed differences in mechanical properties for each kind of cell sheet. This indicates that our new fixture and test system are applicable for measurement of mechanical properties of cell sheets without damage of the sheets by drying.

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Nirbhay, Mayank, Anurag Dixit, R. K. Misra, and Harlal Singh Mali. "Tensile Test Simulation of CFRP Test Specimen Using Finite Elements." Procedia Materials Science 5 (2014): 267–73. http://dx.doi.org/10.1016/j.mspro.2014.07.266.

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Spetz, Göran. "Improving precision of rubber test methods: Part 3—Tensile test." Polymer Testing 14, no. 1 (1995): 13–34. http://dx.doi.org/10.1016/0142-9418(95)90613-l.

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Hsieh, Chiwan Wayne, and Chien-Kuei Lin. "Tensile Test Method Effect on the Tensile Strength of Flexible PET Geogrids." Geotechnical Testing Journal 27, no. 1 (2004): 1–8. http://dx.doi.org/10.1520/gtj11074.

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David Suits, L., TC Sheahan, CW Hsieh, and CK Lin. "Tensile Test Method Effect on the Tensile Strength of Flexible PET Geogrids." Geotechnical Testing Journal 27, no. 1 (2004): 11074. http://dx.doi.org/10.1520/gtj11265j.

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Journal articles on the topic 'Tensile test'

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