3313 Lab 1 - ENSC 3313 THE TENSILE TEST (BRING SAFETY...

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ENSC 3313 THE TENSILE TEST (BRING SAFETY GLASSES) Lab Experiment 1 INTRODUCTION The destructive tensile test is the most important method for determining the mechanical properties of materials. Mechanical properties matter in most engineering applications from manufacturing of desired shapes to load bearing support in structures; thus, it is sensible for any engineer to know about tensile testing; what information is obtained, and what the limitations are. Often, nondestructive hardness tests can be used to provide information that relates to the material’s tensile strength, for hardness is resistance to indentation; that is, resistance to plastic flow. Approximate hardness-tensile strength conversion charts exist for steels; these provide a guide for other metals, too. Indeed, of the common hardness scales, the Brinell scale was set up so that the value for steel was two times the tensile strength (ksi), while the Vickers diamond angle was fixed at a value (136 ° ) that would give the same answer as the Brinell test for much of its range. In this experiment you are using the Rockwell test that has the convenience of easy read out and is convertible by tables (approximately) to the other scales. The Rockwell B (HRB) scale serves for soft steels and many
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This note was uploaded on 01/10/2012 for the course ENSC 3313 taught by Professor Staff during the Fall '11 term at Oklahoma State.

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3313 Lab 1 - ENSC 3313 THE TENSILE TEST (BRING SAFETY...

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