3 documents found, page 1 of 1
Plasticity Effects in the Hole-Drilling Residual Stress Measurement in Peened S...
Nobre, J. P.; Kornmeier, M.; Scholtes, B.
An empirical methodlogy to estimate a local yield stress in work-hardened surfa...
Nobre, J.; Dias, A.; Kornmeier, M.Abstract A methodology is proposed for estimating the local yield stress in work-hardened surface layers. It is based on the concept of in-depth normalized variation of hardness and x-ray diffraction peak width, both of which measure the strain-hardening attained by the materials' surface-treated layers due to, for example, shot-peening. Its principle is directly founded on the classical hardness theory. To stu...
Use of the hole-drilling method for measuring residual stresses in highly stres...
Nobre, J.; Kornmeier, M.; Dias, A.; Scholtes, B.Abstract The same shot-peening treatment was applied to five steels with different mechanical properties. The induced residual stress profiles were analyzed using X-ray diffraction and incremental hole drilling (IHD). The results of both techniques showed that IHD can still be successfully used for measuring shot-peening residual stresses, even if these exceed the yield strength of the bulk material. Expected e...