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Article: Detection of small cracks and cavities using laser diffraction

TitleDetection of small cracks and cavities using laser diffraction
Authors
KeywordsAutocorrelation function
Cracks and cavities
Laser diffraction
Nondestructive testing
Spectral restoration
Issue Date2002
PublisherS P I E - International Society for Optical Engineering. The Journal's web site is located at http://www.spie.org/oe
Citation
Optical Engineering, 2002, v. 41 n. 6, p. 1295-1308 How to Cite?
AbstractA good knowledge of the evolution process of a crack or cavity is necessary for a better understanding the mechanical behavior of the damage and failure of materials and structural components. Before damage begins, the size of the initial or prescribed cracks and cavities are usually very small. These small cracks and cavities can be conveniently used as the diffraction apertures of the coherent light. By analyzing the diffraction fields, the characteristic parameters of these special diffraction apertures can be obtained and, hence, the deformation fields. Experimental tests are conducted to demonstrate the reliability and accuracy of the laser diffraction technique in detecting the evolution and propagation of a small crack or cavity. The relationships between the coherent diffraction patterns and the crack and cavity geometric parameters are established for the simple shape of the crack or cavity aperture. Moreover, the autocorrelative method and the spectral iterative technique are introduced to retrieve the small crack and cavity apertures for the complex shapes.
Persistent Identifierhttp://hdl.handle.net/10722/42407
ISSN
2015 Impact Factor: 0.984
2015 SCImago Journal Rankings: 0.485
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLi, Xen_HK
dc.contributor.authorSoh, AKen_HK
dc.contributor.authorHuang, Cen_HK
dc.contributor.authorYang, CHen_HK
dc.contributor.authorShi, HJen_HK
dc.date.accessioned2007-01-29T08:49:12Z-
dc.date.available2007-01-29T08:49:12Z-
dc.date.issued2002en_HK
dc.identifier.citationOptical Engineering, 2002, v. 41 n. 6, p. 1295-1308en_HK
dc.identifier.issn0091-3286en_HK
dc.identifier.urihttp://hdl.handle.net/10722/42407-
dc.description.abstractA good knowledge of the evolution process of a crack or cavity is necessary for a better understanding the mechanical behavior of the damage and failure of materials and structural components. Before damage begins, the size of the initial or prescribed cracks and cavities are usually very small. These small cracks and cavities can be conveniently used as the diffraction apertures of the coherent light. By analyzing the diffraction fields, the characteristic parameters of these special diffraction apertures can be obtained and, hence, the deformation fields. Experimental tests are conducted to demonstrate the reliability and accuracy of the laser diffraction technique in detecting the evolution and propagation of a small crack or cavity. The relationships between the coherent diffraction patterns and the crack and cavity geometric parameters are established for the simple shape of the crack or cavity aperture. Moreover, the autocorrelative method and the spectral iterative technique are introduced to retrieve the small crack and cavity apertures for the complex shapes.en_HK
dc.format.extent470004 bytes-
dc.format.extent25088 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/msword-
dc.languageengen_HK
dc.publisherS P I E - International Society for Optical Engineering. The Journal's web site is located at http://www.spie.org/oeen_HK
dc.relation.ispartofOptical Engineeringen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsCopyright 2002 Society of Photo-Optical Instrumentation Engineers. This paper was published in Optical Engineering and is made available as an electronic reprint with permission of SPIE. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.en_HK
dc.subjectAutocorrelation functionen_HK
dc.subjectCracks and cavitiesen_HK
dc.subjectLaser diffractionen_HK
dc.subjectNondestructive testingen_HK
dc.subjectSpectral restorationen_HK
dc.titleDetection of small cracks and cavities using laser diffractionen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0091-3286&volume=41&issue=6&spage=1295&epage=1308&date=2002&atitle=Detection+of+small+cracks+and+cavities+using+laser+diffractionen_HK
dc.identifier.emailSoh, AK:aksoh@hkucc.hku.hken_HK
dc.identifier.authoritySoh, AK=rp00170en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1117/1.1474437en_HK
dc.identifier.scopuseid_2-s2.0-0036611665en_HK
dc.identifier.hkuros67113-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0036611665&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume41en_HK
dc.identifier.issue6en_HK
dc.identifier.spage1295en_HK
dc.identifier.epage1308en_HK
dc.identifier.isiWOS:000176176600021-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridLi, X=8438025900en_HK
dc.identifier.scopusauthoridSoh, AK=7006795203en_HK
dc.identifier.scopusauthoridHuang, C=37058275000en_HK
dc.identifier.scopusauthoridYang, CH=12759663600en_HK
dc.identifier.scopusauthoridShi, HJ=7402623300en_HK

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