MRT letter: Extended depth from focus reconstruction method for stretch zone measurement in 15-5PH steel

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorDe Oliveira Caltabiano, Pietro Carelli Reis
dc.creatorSantos Rosa, Paulo Henrique
dc.creatorDe Campos, Kamila Amato
dc.creatorDe Oliveira Hein, Luis Rogerio
dc.date2014-05-20T13:28:18Z
dc.date2016-10-25T16:48:04Z
dc.date2014-05-20T13:28:18Z
dc.date2016-10-25T16:48:04Z
dc.date2012-09-01
dc.date.accessioned2017-04-05T20:11:04Z
dc.date.available2017-04-05T20:11:04Z
dc.identifierMicroscopy Research and Technique. Hoboken: Wiley-blackwell, v. 75, n. 9, p. 1155-1158, 2012.
dc.identifier1059-910X
dc.identifierhttp://hdl.handle.net/11449/9418
dc.identifierhttp://acervodigital.unesp.br/handle/11449/9418
dc.identifier10.1002/jemt.22042
dc.identifierWOS:000307961900001
dc.identifierhttp://dx.doi.org/10.1002/jemt.22042
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/857582
dc.descriptionThe stretch zone width (SZW) data for 15-5PH steel CTOD specimens fractured at -150 degrees C to + 23 degrees C temperature were measured based on focused images and 3D maps obtained by extended depth-of-field reconstruction from light microscopy (LM) image stacks. This LM-based method, with a larger lateral resolution, seems to be as effective for quantitative analysis of SZW as scanning electron microscopy (SEM) or confocal scanning laser microscopy (CSLM), permitting to clearly identify stretch zone boundaries. Despite the worst sharpness of focused images, a robust linear correlation was established to fracture toughness (KC) and SZW data for the 15-5PH steel tested specimens, measured at their center region. The method is an alternative to evaluate the boundaries of stretched zones, at a lower cost of implementation and training, since topographic data from elevation maps can be associated with reconstructed image, which summarizes the original contrast and brightness information. Finally, the extended depth-of-field method is presented here as a valuable tool for failure analysis, as a cheaper alternative to investigate rough surfaces or fracture, compared to scanning electron or confocal light microscopes. Microsc. Res. Tech. 75:11551158, 2012. (C) 2012 Wiley Periodicals, Inc.
dc.languageeng
dc.publisherWiley-Blackwell
dc.relationMicroscopy Research and Technique
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectstretch zone size
dc.subject3D reconstruction
dc.subjectlight microscopy
dc.subjectquantitative fractography
dc.titleMRT letter: Extended depth from focus reconstruction method for stretch zone measurement in 15-5PH steel
dc.typeOtro


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