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Characterization Techniques
Published in Manjari Sharma, Biodegradable Polymers, 2021
As the material stretches during tension its dimension orthogonal to axis of applied force decreases and so the area of cross section decreases. The tensile strength at break or the ultimate tensile strength is the maximum tensile stress sustained by the specimen at the moment of the rupture of the specimen. If the tensile strength induced a stretch to length l at the time of the failure of the test specimen the ultimate elongation or the elongation at the break is the strain produced in the test piece, expressed as the equation (5.8). Ebreak=[{l−lo}/lo]
Mechanical Testing of Composites
Published in Sumit Sharma, Composite Materials, 2021
The well-known purpose of the tensile testing is to measure the ultimate tensile strength and modulus of the composite. However, one can measure the axial Poisson’s ratio with additional instrumentations. The standard specimen used for tensile testing of continuous fiber composites is a flat, straight-sided coupon. Flat coupons in ASTM standard D 3039/D 3039M-93 for 0° and 90° are [1] shown in Figure 17.3a and b, respectively. The specimen, as
Properties of Engineering Materials
Published in Keith L. Richards, Design Engineer's Sourcebook, 2017
Ultimate tensile strength is an engineering value calculated by dividing the maximum load on a material experienced during a tensile test by the initial cross section of the test sample. When viewed in light of the other tensile test data, the ultimate tensile strength helps to provide a good indication of a material’s toughness but is not by itself a useful design limit. Conversely, this can be construed as the minimum stress that is necessary to ensure the failure of a material.
Machine learning algorithms for the prediction of the strength of steel rods: an example of data-driven manufacturing in steelmaking
Published in International Journal of Computer Integrated Manufacturing, 2020
Estela Ruiz, Diego Ferreño, Miguel Cuartas, Ana López, Valentín Arroyo, Federico Gutiérrez-Solana
Tensile tests were conducted at room temperature following several ISO standards (ISO-6892-1 ISO-6892-1 2016; ISO-15630-1; ISO-15630-1 2019). Six samples were randomly selected from each of the heats and tested until failure using an Instron 8501 universal testing machine at a fixed strain rate of 10−3 min−1 to ensure quasi-static conditions. The ultimate tensile strength, which is the maximum stress that the specimen is able to withstand, was selected as the relevant parameter to measure the strength of the material.
Development of electrically conductive composites based on recycled resources
Published in The Journal of The Textile Institute, 2020
Azam Ali, Vijay Baheti, Muhammad Zaman Khan, Munir Ashraf, Jiri Militky
The tensile strength was measured according to standard (ASTM D3039). A flat strip of the sample with rectangular cross section was fixed between jays of the testing machine and tensile load was applied to check the sample behavior (Wang, Masoodi, Brady, & Brian, 2013). The ultimate tensile strength of the material is noted from the maximum load carried prior to failure. The stress–strain response of the composite is also recorded from which the information about ultimate tensile strain and tensile modulus were obtained.
Acoustic emission analysis for characterisation of damage mechanisms in glass fiber reinforced polyester composite
Published in Australian Journal of Mechanical Engineering, 2018
S. Gholizadeh, Z. Leman, B. T. H. T. Baharudin, O. Inayatullah
The goal of the prior tensile tests in this study was to determine the ultimate tensile strength (UTS) of the materials. The three specimens were tested on a universal machine testing system type INSTRON 3382, with a 100 kN capacity. An average UTS of 135.5 MPa was obtained from the tensile test, and this UTS was used as the basis for subsequent experiments.