Determination of residual stresses by thermal relaxation and speckle correlation interferometry
A new technique for the measurement of residual stresses is presented. The technique is based on strain measurements following thermal stress relaxation. The heat input is supplied by a low power infrared laser and the strain is measured with speckle pattern correlation inter-ferometry. This paper p...
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Veröffentlicht in: | Strain 2002-11, Vol.38 (4), p.141-149 |
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Format: | Artikel |
Sprache: | eng |
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Online-Zugang: | Volltext |
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Zusammenfassung: | A new technique for the measurement of residual stresses is presented. The technique is based on strain measurements following thermal stress relaxation. The heat input is supplied by a low power infrared laser and the strain is measured with speckle pattern correlation inter-ferometry. This paper presents a comprehensive overview of the technique and an example of how it has been applied in a practical situation. Material is a stainless steel welded container. |
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ISSN: | 0039-2103 1475-1305 |
DOI: | 10.1046/j.1475-1305.2002.00030.x |