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...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2014-10-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | http://www.gruppofrattura.it/pdf/rivista/numero30/numero_30_art_27.pdf |
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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-bdfb3921c3aa4da7a21bb73b1c18c944 |
| institution | Kabale University |
| issn | 1971-8993 1971-8993 |
| language | English |
| publishDate | 2014-10-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-bdfb3921c3aa4da7a21bb73b1c18c9442025-01-03T00:27:05ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89931971-89932014-10-0183021121910.3221/IGF-ESIS.30.27Considerations 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,Dipartimento di Meccanica, Matematica e Management, Politecnico di Bari,Dipartimento di Meccanica, Matematica e Management, Politecnico di Bari,Dipartimento di Meccanica, Matematica e Management, Politecnico di Bari,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.http://www.gruppofrattura.it/pdf/rivista/numero30/numero_30_art_27.pdfResidual stressElectronic Speckle Pattern Interferometry (ESPI)Hole Drilling Method (HD) |
| 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 Residual stress Electronic Speckle Pattern Interferometry (ESPI) Hole Drilling Method (HD) |
| 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 | Residual stress Electronic Speckle Pattern Interferometry (ESPI) Hole Drilling Method (HD) |
| url | http://www.gruppofrattura.it/pdf/rivista/numero30/numero_30_art_27.pdf |
| work_keys_str_mv | AT cbarile considerationsonthechoiceofexperimentalparametersinresidualstressmeasurementsbyholedrillingandespi AT ccasavola considerationsonthechoiceofexperimentalparametersinresidualstressmeasurementsbyholedrillingandespi AT gpappalettera considerationsonthechoiceofexperimentalparametersinresidualstressmeasurementsbyholedrillingandespi AT cpappalettere considerationsonthechoiceofexperimentalparametersinresidualstressmeasurementsbyholedrillingandespi |