As the question says, is there any relationship between density variation and plastic strain? The following paper establishes the relationship between the residual stress and natural frequency:DOI: 10.1007/s13369-020-04560-0. And also, in the ultrasound technique, residual stress gets detected by wave propagation. That means there must be some density variation of the metal. Is there any straightforward relationship between density variation and plastic strain?
Ultrasonics are sensitive to variation in density and grain size. Larger the grain size, attenuation is more and there will be loss of Energy. Here, the rate of cooling affects the grain size, hence Ultrasonics behaves in different fashion.
Hello, Dr. Nelaturi thanks for your reply. Does the density change due to a change in grain size?
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