【作者】 陈建军； 章德； 毛一葳；

【Author】 CHEN Jian-jun,ZHANG De,MAO Yi-wei (The Institute of Acoustics,Key Laboratory of Modern Acoustics,Nanjing University,Nanjing,210093,China)

【机构】 南京大学声学研究所近代声学教育部重点实验室；

【摘要】 随着现代工业的发展,多层复合材料的使用也越来越广泛。多层复合材料在粘接的时候或者使用了一段时间后,层与层之间的粘接界面会出现裂纹,可能导致材料断裂,这就为多层复合材料的安全使用埋下隐患。本文采用接触声非线性方法建立了反射式声显微镜扫描成像系统对复合材料粘接界面粘接力进行定量扫描成像并给出了一个实验样品粘接界面粘接力的定量轮廓图。图中,很容易判断出粘接力大或小的区域,从而为复合材料使用的安全性和有效性提供检测依据。相对于透射式声显微镜系统,反射式声显微系统更易在工业中推广使用。更多还原

【Abstract】 Due to the development of the modern industry,the multilayered composite materials are widely used.When the composite materials are formed by bonding the layers together or after they have been used for a period of time,some micro-cracks will appear in the interface which will possibly cause the composite materials to break.The weak bonding region with the micro-cracks is possibly the initial spot of the entire equipment’s failure.In this paper,a reflective acoustic microscopy by using the contact acoustic nonlinearity(CAN) method is set up to scan the quantitative bonding strength at the interface of composite materials.A quantitative contour of the bonding strength for one sample is also presented.From the imaging,the position with weak bonding strength could be easily located,which can be used to decide weather the material could be employed continuously.Compare to the transmitted acoustic microscopy,the reflective acoustic microscopy is easy to be generalized in industry.更多还原