MFE 201 Lecture Notes - Lecture 39: Nondestructive Testing, Eddy-Current Testing, Tensile Testing
31 Mar 2016
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Document Summary
The use of noninvasive techniques to determine the integrity of a material, component or structure, or quantitatively measure some characteristic of an object. First is a quick overview of destructive vs. non-destructive testing. Destructive testing destroys component this is, of course, the primary distinguishing feature of this class of methods. Examples include: tensile testing pull the item apart until it ruptures, fatigue testing cycling a part with loading many times until it fails, impact testing apply increasing forces until the part breaks or fails. With non-destructive testing (also known as ndt) you can still use component. In fact, it can be a component that is in service. Advantages: quantitative, precise-exact number, inexpensive test preparation, easy to perform. Disadvantages: applies to a sample, tested parts are destroyed, cannot repeat the test on the same item, may be costly if parts are expensive, does not apply to parts in use.
