Progress in thermoelastic residual stress measurement
Progress in thermoelastic residual stress measurement
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.
127-133
Quinn, S.
0805cab8-0ef5-4f65-9ed6-25fd5563d1a6
Dulieu-Barton, J.M.
9e35bebb-2185-4d16-a1bc-bb8f20e06632
Langlands, J.M.
34f881d2-1e15-42e2-ae02-896e703aa9e4
August 2004
Quinn, S.
0805cab8-0ef5-4f65-9ed6-25fd5563d1a6
Dulieu-Barton, J.M.
9e35bebb-2185-4d16-a1bc-bb8f20e06632
Langlands, J.M.
34f881d2-1e15-42e2-ae02-896e703aa9e4
Abstract
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.
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Published date: August 2004
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Local EPrints ID: 22862
URI: http://eprints.soton.ac.uk/id/eprint/22862
ISSN: 1475-1305
PURE UUID: 052cb23f-8a8b-4be9-bc44-2e6aae905e8f
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Date deposited: 22 Mar 2006
Last modified: 15 Mar 2024 06:41
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Author:
S. Quinn
Author:
J.M. Langlands
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