Three-directional grating and application in measuring residual stresses

摘要

The performance of mechanical parts is influenced by residual stresses on grinding surfaces. Because of the randomness of residual stresses, they are very difficult to determine by theory. A three-directional grating is presented by the author, and by means of the moire interference technique and hole-drilling, a new method of residual stress measurement is developed. Further, the residual stresses on grinding surfaces are given.