Remarks on Residual Stress Measurement by Hole-Drilling and Electronic Speckle Pattern Interferometry
Hole drilling is the most widespread method for measuring residual stress. It is based on the principle that drilling a hole in the material causes a local stress relaxation; the initial residual stress can be calculated by measuring strain in correspondence with each drill depth. Recently optical t...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2014/487149 |
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| author | Claudia Barile Caterina Casavola Giovanni Pappalettera Carmine Pappalettere |
| author_facet | Claudia Barile Caterina Casavola Giovanni Pappalettera Carmine Pappalettere |
| author_sort | Claudia Barile |
| collection | DOAJ |
| description | Hole drilling is the most widespread method for measuring residual stress. It is based on the principle that drilling a hole in the material causes a local stress relaxation; the initial residual stress can be calculated by measuring strain in correspondence with each drill depth. Recently optical techniques were introduced to measure strain; in this case, the accuracy of the final results depends, among other factors, on the proper choice of the area of analysis. Deformations are in fact analyzed within an annulus determined by two parameters: the internal and the external radius. In this paper, the influence of the choice of the area of analysis was analysed. A known stress field was introduced on a Ti grade 5 sample and then the stress was measured in correspondence with different values of the internal and the external radius of analysis; results were finally compared with the expected theoretical value. |
| format | Article |
| id | doaj-art-405de15b96e94df58d59a55d171c865f |
| institution | Kabale University |
| issn | 2356-6140 1537-744X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-405de15b96e94df58d59a55d171c865f2025-02-03T01:28:51ZengWileyThe Scientific World Journal2356-61401537-744X2014-01-01201410.1155/2014/487149487149Remarks on Residual Stress Measurement by Hole-Drilling and Electronic Speckle Pattern InterferometryClaudia Barile0Caterina Casavola1Giovanni Pappalettera2Carmine Pappalettere3Dipartimento di Meccanica, Matematica e Management, Politecnico di Bari, Viale Japigia 182, 70126 Bari, ItalyDipartimento di Meccanica, Matematica e Management, Politecnico di Bari, Viale Japigia 182, 70126 Bari, ItalyDipartimento di Meccanica, Matematica e Management, Politecnico di Bari, Viale Japigia 182, 70126 Bari, ItalyDipartimento di Meccanica, Matematica e Management, Politecnico di Bari, Viale Japigia 182, 70126 Bari, ItalyHole drilling is the most widespread method for measuring residual stress. It is based on the principle that drilling a hole in the material causes a local stress relaxation; the initial residual stress can be calculated by measuring strain in correspondence with each drill depth. Recently optical techniques were introduced to measure strain; in this case, the accuracy of the final results depends, among other factors, on the proper choice of the area of analysis. Deformations are in fact analyzed within an annulus determined by two parameters: the internal and the external radius. In this paper, the influence of the choice of the area of analysis was analysed. A known stress field was introduced on a Ti grade 5 sample and then the stress was measured in correspondence with different values of the internal and the external radius of analysis; results were finally compared with the expected theoretical value.http://dx.doi.org/10.1155/2014/487149 |
| spellingShingle | Claudia Barile Caterina Casavola Giovanni Pappalettera Carmine Pappalettere Remarks on Residual Stress Measurement by Hole-Drilling and Electronic Speckle Pattern Interferometry The Scientific World Journal |
| title | Remarks on Residual Stress Measurement by Hole-Drilling and Electronic Speckle Pattern Interferometry |
| title_full | Remarks on Residual Stress Measurement by Hole-Drilling and Electronic Speckle Pattern Interferometry |
| title_fullStr | Remarks on Residual Stress Measurement by Hole-Drilling and Electronic Speckle Pattern Interferometry |
| title_full_unstemmed | Remarks on Residual Stress Measurement by Hole-Drilling and Electronic Speckle Pattern Interferometry |
| title_short | Remarks on Residual Stress Measurement by Hole-Drilling and Electronic Speckle Pattern Interferometry |
| title_sort | remarks on residual stress measurement by hole drilling and electronic speckle pattern interferometry |
| url | http://dx.doi.org/10.1155/2014/487149 |
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