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Progress in Thermoelastic Residual Stress Measurement
Author(s) -
Quinn S.,
DulieuBarton J. M.,
Langlands J. M.
Publication year - 2004
Publication title -
strain
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.477
H-Index - 47
eISSN - 1475-1305
pISSN - 0039-2103
DOI - 10.1111/j.1475-1305.2004.00140.x
Subject(s) - thermoelastic damping , residual stress , materials science , context (archaeology) , structural engineering , stress (linguistics) , deformation (meteorology) , work (physics) , residual , composite material , mechanical engineering , engineering , thermal , computer science , thermodynamics , physics , geology , paleontology , linguistics , philosophy , algorithm
The possibilities of using thermoelastic stress analysis to measure residual stresses are assessed, particularly in the context of the effect of plastic strain on the thermoelastic output. Components manufactured from aluminium and steel were deformed so that they experienced a plastic deformation and in some cases, a residual stress. Thermoelastic data from the components were compared with data from geometrically similar undeformed components. According to well‐accepted theory, the thermoelastic data from both components should be practically identical. The results from the deformed components show departures from those of the undeformed components; the possible reasons for this are discussed in detail. A practical application of cold‐expanded holes used in aircraft structures is described and recommendations are made for possible future work.