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A temperature correction methodology for quantitative thermoelastic stress analysis and damage assessment

A temperature correction methodology for quantitative thermoelastic stress analysis and damage assessment
A temperature correction methodology for quantitative thermoelastic stress analysis and damage assessment
In thermoelastic stress analysis an infra-red detector is used to obtain the small temperature change resulting from the thermoelastic effect. The output from the detector, known as the thermoelastic signal, is dependent on both the surface stresses and the surface temperature of the component under investigation. For quantitative thermoelastic stress analysis it is important that the response resulting from changes in the surface temperature are decoupled from the response resulting from the stress changes. In this paper a means of decoupling the response is presented that involves making corrections for increases in surface temperature so that the thermoelastic signal is dependent only on the stresses. The underlying theory is presented and a correction factor is developed using an experimental approach. A methodology for applying the correction factor to full-field data is provided. The methodology is validated through a number of case studies and applied to a composite component subject to fatigue damage initiated at a central hole
thermoelastic stress analysis, TSA, temperature correction, composite materials, FRPs, damage studies
0957-0233
1627-1637
Dulieu-Barton, J.M.
9e35bebb-2185-4d16-a1bc-bb8f20e06632
Emery, T.R.
83b9017e-7f94-4613-95f0-f373a3554581
Quinn, S.
0805cab8-0ef5-4f65-9ed6-25fd5563d1a6
Cunningham, P.R.
678bb28d-d7b5-4c50-b312-0a25cec0c3f5
Dulieu-Barton, J.M.
9e35bebb-2185-4d16-a1bc-bb8f20e06632
Emery, T.R.
83b9017e-7f94-4613-95f0-f373a3554581
Quinn, S.
0805cab8-0ef5-4f65-9ed6-25fd5563d1a6
Cunningham, P.R.
678bb28d-d7b5-4c50-b312-0a25cec0c3f5

Dulieu-Barton, J.M., Emery, T.R., Quinn, S. and Cunningham, P.R. (2006) A temperature correction methodology for quantitative thermoelastic stress analysis and damage assessment. Measurement Science and Technology, 17 (6), 1627-1637. (doi:10.1088/0957-0233/17/6/047).

Record type: Article

Abstract

In thermoelastic stress analysis an infra-red detector is used to obtain the small temperature change resulting from the thermoelastic effect. The output from the detector, known as the thermoelastic signal, is dependent on both the surface stresses and the surface temperature of the component under investigation. For quantitative thermoelastic stress analysis it is important that the response resulting from changes in the surface temperature are decoupled from the response resulting from the stress changes. In this paper a means of decoupling the response is presented that involves making corrections for increases in surface temperature so that the thermoelastic signal is dependent only on the stresses. The underlying theory is presented and a correction factor is developed using an experimental approach. A methodology for applying the correction factor to full-field data is provided. The methodology is validated through a number of case studies and applied to a composite component subject to fatigue damage initiated at a central hole

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More information

Published date: 17 May 2006
Keywords: thermoelastic stress analysis, TSA, temperature correction, composite materials, FRPs, damage studies
Organisations: Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 35569
URI: http://eprints.soton.ac.uk/id/eprint/35569
ISSN: 0957-0233
PURE UUID: 714c9727-0185-4db4-a904-82209a74745b
ORCID for S. Quinn: ORCID iD orcid.org/0000-0002-9727-5080

Catalogue record

Date deposited: 19 May 2006
Last modified: 08 Jan 2022 02:59

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Contributors

Author: T.R. Emery
Author: S. Quinn ORCID iD
Author: P.R. Cunningham

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