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首页> 外文期刊>Journal of Adhesion Science and Technology: The International Journal of Theoredtical and Basic Aspects of Adhesion Science and Its Applications in All Areas of Technology >Application of lock-in thermography in nondestructive evaluation of adhesively-bonded aluminum joints
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Application of lock-in thermography in nondestructive evaluation of adhesively-bonded aluminum joints

机译：锁定式热成像在胶粘铝接头无损评估中的应用

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摘要

A major problem in industrial applications of structural adhesives is the quality assurance of manufactured joints.At present,for lack of a suitable nondestructive technique,production standards for adhesively-bonded aluminum joints are established on the basis of destructive tests and statistical inference.An experimental study was carried out to assess if lock-in thermography (LT) could be used as a tool for nondestructive evaluation of adhesively-bonded aluminum joints.Several samples were fabricated by varying the governing parameters such as nature of aluminum alloy,substrate thickness,surface treatment,adhesive type and bondline thickness.The effects of surface treatments on the loading capability of lap joints were evaluated through both destructive tensile tests and nondestructive evaluation with infrared LT.Tensile tests showed that the joint performance was not affected by the nature of the aluminum alloy but by the substrate thickness,the adhesive type and the bondline thickness.LT was capable of detecting imperfections such as scratches on substrates and foreign inclusions in the adhesive layer.
机译：结构粘合剂在工业应用中的一个主要问题是人造接缝的质量保证。目前，由于缺乏合适的非破坏性技术，在破坏性试验和统计推断的基础上建立了粘合铝接缝的生产标准。进行了研究以评估锁定热成像（LT）是否可以用作无损评估胶粘铝接头的工具。通过改变诸如铝合金的性质，基材厚度，表面的控制参数来制作几个样品通过破坏性拉伸试验和红外LT进行的非破坏性评估，评估了表面处理对搭接接头承载能力的影响。拉伸试验表明，接头性能不受铝的性质影响合金，但受基材厚度，粘合剂类型和粘结层厚度的影响ness.LT能够检测缺陷，例如基材上的划痕和粘合层中的异物。

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