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Tensile testing, also known as tension testing, [1] is a fundamental materials science and engineering test in which a sample is subjected to a controlled tension until failure. Properties that are directly measured via a tensile test are ultimate tensile strength , breaking strength , maximum elongation and reduction in area. [ 2 ]
Schematic and dimensions of a compact tension specimen. A compact tension specimen (CT) is a type of standard notched specimen in accordance with ASTM [1] and ISO [2] standards. Compact tension specimens are used extensively in the area of fracture mechanics and corrosion testing, in order to establish fracture toughness and fatigue crack ...
According to ASTM D1002 The specimens tested will be configured as lap joints. They will need to be sectioned in a way that they can fit in the grips used for the tensile testing. The length of the overlap for the lap joint is determined by the thickness of the material, the yield point of the metal, and the value that is 50% of the estimated ...
ASTM D790: Standard test methods for flexural properties of unreinforced and reinforced plastics and electrical insulating materials. ASTM E1290: Standard Test Method for Crack-Tip Opening Displacement (CTOD) Fracture Toughness Measurement. ASTM D7264: Standard Test Method for Flexural Properties of Polymer Matrix Composite Materials.
The ASTM standard E1820 for the measurement of fracture toughness [11] recommends three coupon types for fracture toughness testing, the single-edge bending coupon [SE(B)], the compact tension coupon [C(T)] and the disk-shaped compact tension coupon [DC(T)]. Each specimen configuration is characterized by three dimensions, namely the crack ...
One example is the long used Sustained Load Test of notched round bar tensile specimens found in ASTM F 519. In this test, the exposed test specimens are subjected to a load equal to 75% of the Fracture Strength and held for 200 hours. If the specimen does not break, the specimen has passed. If it fractures prior to the 200 hours then it has ...
The ultimate tensile strength of a material is an intensive property; therefore its value does not depend on the size of the test specimen.However, depending on the material, it may be dependent on other factors, such as the preparation of the specimen, the presence or otherwise of surface defects, and the temperature of the test environment and material.
The portion where necking occurs may be called the neck of the specimen. In engineering and materials science, necking is a mode of tensile deformation where relatively large amounts of strain localize disproportionately in a small region of the material. The resulting prominent decrease in local cross-sectional area provides the basis for the ...