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Experimental determination of residual stress

Author
Ferguson, Milton W.
Published
Sep 1, 1991.
Physical Description
1 electronic document
Online Version

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Summary
Residual stresses in finished parts have often been regarded as factors contributing to premature part failure and geometric distortions. Currently, residual stresses in welded structures and railroad components are being investigated. High residual stresses formed in welded structures due primarily to the differential contractions of the weld material as it cools and solidifies can have a profound effect on the surface performance of the structure. In railroad wheels, repeated use of the brakes causes high residual stresses in the rims which may lead to wheel failure and possible derailment. The goals of the study were: (1) to develop strategies for using x-ray diffraction to measure residual stress; (2) to subject samples of Inconel 718 to various mechanical and heat treatments and to measure the resulting stress using x-ray diffraction; and (3) to measure residual stresses in ferromagnetic alloys using magnetoacoustics.
Other Subject(s)
Collection
NASA Technical Reports Server (NTRS) Collection.
Note
Document ID: 19920004621.
Accession ID: 92N13839.
Old Dominion Univ., NASA/American Society for Engineering Ed; Old Dominion Univ.,.
Terms of Use and Reproduction
No Copyright.
View MARC record | catkey: 15678031