MSE_104_W08_Tensile_test-handout - Department of Materials...

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Department of Materials Science and Engineering University of California, Los Angeles MSE 14 Experiment 1 Static Tensile Testing of Metallic Alloys Introduction There are three principal ways to apply a load to a specimen, namely tension, compression, and shear. The basic and principal mechanical properties such as yield strength and Young’s modulus can be obtained by a simple stress-strain test. The engineering tensile test is widely used to provide basic design information on the strength of material and as an acceptance test for the specification of materials. In the tension test, a specimen is subjected to a continually increasing uniaxial tensile force while simultaneous observations are made of the elongation of the specimen. The tensile test is performed by gripping the opposite ends of a specimen and pulling it apart. The static tensile test is one of the simplest and most commonly used mechanical tests. When properly conducted on suitable test specimens, tensile tests give accurate evaluation of fundamental mechanical properties for design applications. It should be noted, however, that tensile properties are not necessarily sufficient to predict the performance of materials under all loading conditions. Objective The objective of this laboratory exercise is to determine the strength and several other properties of selected metal alloys, to observe the behavior of the material under loading, and to study fracture. The specific items to be determined are:
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