Nobre, João P.Oliveira, MiguelAlbertazzi, ArmandoViotti, MatiasBatista, António CastanholaCoelho, Luís Manuel de JesusMarques, Maria J.2015-01-282015-01-282014Nobre, 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, 2014.1662-8985http://hdl.handle.net/10400.8/1284Artigo em acesso restrito.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.engShot-peeningResidual stressesHole-drilling methodLaser interferometryDigital speckle pattern interferometry (DSPI)journal article2015-01-23