Assessing shot-peening residual stresses by using the incremental hole-drilling technique and laser interferometry (DSPI)

Nobre, João P.; Oliveira, Miguel; Albertazzi, Armando; Viotti, Matias; Batista, António Castanhola; Coelho, Luís Manuel de Jesus; Marques, Maria J.

http://hdl.handle.net/10400.8/1284

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Authors

Batista, António Castanhola

Coelho, Luís Manuel de Jesus

Marques, Maria J.

Abstract(s)

The incremental hole-drilling technique was applied to determine residual stress profiles in shot-peened steel layers. The accuracy of using an enhanced Digital Speckle Pattern Interferometry technique for measuring the strain relaxation arising around the drilled holes and, consequently, the in-depth residual stress distribution induced by shot-peening, was evaluated. The experimental results were systematically compared with those determined using standard electric strain-gauges. The X-ray diffraction technique was chosen as reference due to its high accuracy to determine shot-peening residual stresses.

Description

Artigo em acesso restrito.

Keywords

Shot-peening Residual stresses Hole-drilling method Laser interferometry Digital speckle pattern interferometry (DSPI)

URI

http://hdl.handle.net/10400.8/1284

Citation

Nobre, João P.; Oliveira, Miguel; Albertazzi, Armando; Viotti, Matias; Batista, António Castanhola; Coelho, Luís; Marques, Maria J.Assessing Shot-Peening Residual Stresses by Using the Incremental Hole-Drilling Technique and Laser Interferometry (DSPI), Advanced Materials Research, 996, 996, 269-276, 2014.