Please use this identifier to cite or link to this item:
https://scholarbank.nus.edu.sg/handle/10635/58689
DC Field | Value | |
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dc.title | Shearographic and holographic assessment of defective laminates with bond-lines of different elasticities | |
dc.contributor.author | Shang, H.M. | |
dc.contributor.author | Tham, L.M. | |
dc.contributor.author | Chau, F.S. | |
dc.date.accessioned | 2014-06-17T05:17:18Z | |
dc.date.available | 2014-06-17T05:17:18Z | |
dc.date.issued | 1995-07 | |
dc.identifier.citation | Shang, H.M., Tham, L.M., Chau, F.S. (1995-07). Shearographic and holographic assessment of defective laminates with bond-lines of different elasticities. Journal of Engineering Materials and Technology, Transactions of the ASME 117 (3) : 322-329. ScholarBank@NUS Repository. | |
dc.identifier.issn | 00944289 | |
dc.identifier.uri | http://scholarbank.nus.edu.sg/handle/10635/58689 | |
dc.description.abstract | While defects in laminated plates are readily revealed using double-exposure shearography and holography, when an incremental vacuum pressure is applied between the exposures, the apparent defect size, measured from the boundary of the perturbed fringes, may over-estimate the actual defect size depending on the elasticity of the bond-line. In this paper, the perturbed fringes were described by a mathematical model derived from the theory of thin plates supported by a Winkler type elastic foundation which takes into consideration the elasticity of the bond-line. An iterative technique is subsequently presented for estimating the size and depth of the defect from the fringe pattern without the need to pre-determine the current elasticity of the bond-line. Laminates with a thick and highly elastic bond-line, found in foam-adhesive bonded metal laminates, and those with a thin and brittle bond-line, found in multi-layered glassfibre reinforced plastic plates, were tested. Results have shown that the defects in these laminates were accurately assessed. | |
dc.source | Scopus | |
dc.type | Article | |
dc.contributor.department | MECHANICAL & PRODUCTION ENGINEERING | |
dc.description.sourcetitle | Journal of Engineering Materials and Technology, Transactions of the ASME | |
dc.description.volume | 117 | |
dc.description.issue | 3 | |
dc.description.page | 322-329 | |
dc.description.coden | JEMTA | |
dc.identifier.isiut | NOT_IN_WOS | |
Appears in Collections: | Staff Publications |
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