Considerations on the choice of experimental parameters in residual stress measurements by hole-drilling and ESPI
Residual stresses occur in many manufactured structures and components. Great number of investigations have been carried out to study this phenomenon. Over the years, different techniques have been developed to measure residual stresses; nowadays the combination of Hole Drilling method (HD) with Ele...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2014-09-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/1339 |
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| author | C. Barile C. Casavola G. Pappalettera C. Pappalettere |
| author_facet | C. Barile C. Casavola G. Pappalettera C. Pappalettere |
| author_sort | C. Barile |
| collection | DOAJ |
| description | Residual stresses occur in many manufactured structures and components. Great number of investigations have been carried out to study this phenomenon. Over the years, different techniques have been developed to measure residual stresses; nowadays the combination of Hole Drilling method (HD) with Electronic Speckle Pattern Interferometry (ESPI) has encountered great interest. The use of a high sensitivity optical technique instead of the strain gage rosette has the advantage to provide full field information without any contact with the sample by consequently reducing the cost and the time required for the measurement. The accuracy of the measurement, however, is influenced by the proper choice of several parameters: geometrical, analysis and experimental. In this paper, in particular, the effects of some of those parameters are investigated: misknowledgment in illumination and detection angles, the influence of the relative angle between the sensitivity vector of the system and the principal stress directions, the extension of the area of analysis and the adopted drilling rotation speed. In conclusion indications are provided to the scope of optimizing the measurement process together with the identification of the major sources of errors that can arise during the measuring and the analysis stages. |
| format | Article |
| id | doaj-art-7b68f9e9bb7e470bb944bea65641efcd |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2014-09-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-7b68f9e9bb7e470bb944bea65641efcd2025-01-03T00:39:46ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932014-09-01830Considerations on the choice of experimental parameters in residual stress measurements by hole-drilling and ESPIC. Barile0C. Casavola1G. Pappalettera2C. Pappalettere3Dipartimento di Meccanica, Matematica e Management, Politecnico di Bari, viale Japigia 182, Bari, ItalyDipartimento di Meccanica, Matematica e Management, Politecnico di Bari, viale Japigia 182, Bari, ItalyDipartimento di Meccanica, Matematica e Management, Politecnico di Bari, viale Japigia 182, Bari, ItalyDipartimento di Meccanica, Matematica e Management, Politecnico di Bari, viale Japigia 182, Bari, ItalyResidual stresses occur in many manufactured structures and components. Great number of investigations have been carried out to study this phenomenon. Over the years, different techniques have been developed to measure residual stresses; nowadays the combination of Hole Drilling method (HD) with Electronic Speckle Pattern Interferometry (ESPI) has encountered great interest. The use of a high sensitivity optical technique instead of the strain gage rosette has the advantage to provide full field information without any contact with the sample by consequently reducing the cost and the time required for the measurement. The accuracy of the measurement, however, is influenced by the proper choice of several parameters: geometrical, analysis and experimental. In this paper, in particular, the effects of some of those parameters are investigated: misknowledgment in illumination and detection angles, the influence of the relative angle between the sensitivity vector of the system and the principal stress directions, the extension of the area of analysis and the adopted drilling rotation speed. In conclusion indications are provided to the scope of optimizing the measurement process together with the identification of the major sources of errors that can arise during the measuring and the analysis stages.https://www.fracturae.com/index.php/fis/article/view/1339Electronic Speckle Pattern Interferometry (ESPI) |
| spellingShingle | C. Barile C. Casavola G. Pappalettera C. Pappalettere Considerations on the choice of experimental parameters in residual stress measurements by hole-drilling and ESPI Fracture and Structural Integrity Electronic Speckle Pattern Interferometry (ESPI) |
| title | Considerations on the choice of experimental parameters in residual stress measurements by hole-drilling and ESPI |
| title_full | Considerations on the choice of experimental parameters in residual stress measurements by hole-drilling and ESPI |
| title_fullStr | Considerations on the choice of experimental parameters in residual stress measurements by hole-drilling and ESPI |
| title_full_unstemmed | Considerations on the choice of experimental parameters in residual stress measurements by hole-drilling and ESPI |
| title_short | Considerations on the choice of experimental parameters in residual stress measurements by hole-drilling and ESPI |
| title_sort | considerations on the choice of experimental parameters in residual stress measurements by hole drilling and espi |
| topic | Electronic Speckle Pattern Interferometry (ESPI) |
| url | https://www.fracturae.com/index.php/fis/article/view/1339 |
| work_keys_str_mv | AT cbarile considerationsonthechoiceofexperimentalparametersinresidualstressmeasurementsbyholedrillingandespi AT ccasavola considerationsonthechoiceofexperimentalparametersinresidualstressmeasurementsbyholedrillingandespi AT gpappalettera considerationsonthechoiceofexperimentalparametersinresidualstressmeasurementsbyholedrillingandespi AT cpappalettere considerationsonthechoiceofexperimentalparametersinresidualstressmeasurementsbyholedrillingandespi |