Pages: 15 Published: Oct 1974
The amount of technical information generated by a single fatigue test can vary from a terse noting of the cycles or time to the point when the specimen broke into two pieces, to the continuous observation of dislocation movement by means of television or movie camera. It is outside the scope of this manual to discuss the examination of the specimen after failure (for example, fractography). However, the fatigue test engineer should know something of the wide range of possibilities he can utilize to monitor what is happening on and in the specimen during the test. In this chapter, a number of techniques for monitoring cyclic strain, crack initiation, and crack propagation will be briefly described. For more detailed information, the reader is advised to consult the bibliography at the end of the chapter.
Paper ID: STP32208S