发明名称 |
METHOD OF ASSESSING BOND INTEGRITY IN BONDED STRUCTURES |
摘要 |
A technique for acoustic detection of a disbond within a bonded structure involves thermal excitation of the surface of the bonded structure to induce a lifting and membrane vibration and is applicable to laminates and coated structures, as well as foam core structures or a honeycomb structures. The technique does not require access to both sides of the bonded structure. A large etendue interferometer is used to provide surface displacement measurement. The surface displacement measurement can be analyzed both by frequency or amplitude to determine existence of a disbond by membrane vibration, and further a thickness of the disbond can be determined using traditional pulse-echo time analysis. The technique may allow detection of stick bonds. |
申请公布号 |
CA2651341(C) |
申请公布日期 |
2017.01.24 |
申请号 |
CA20072651341 |
申请日期 |
2007.05.09 |
申请人 |
NATIONAL RESEARCH COUNCIL OF CANADA |
发明人 |
MONCHALIN, JEAN-PIERRE;BLOUIN, ALAIN;CAMPAGNE, BENJAMIN |
分类号 |
G01N25/72;G01B9/02;G01B9/027 |
主分类号 |
G01N25/72 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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