Width gauging of surface slot using laser-generated Rayleigh waves
Width gauging of surface slot using laser-generated Rayleigh waves
复制标题
使用激光产生的瑞利波测量表面槽的宽度
DOI：
10.1016/j.optlastec.2016.12.033
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发表时间：
2017-07-01
影响因子：
5
通讯作者：
Xu, Xiaodong
中科院分区：
文献类型：
--
作者：
Wang, Chuanyong;Sun, Anyu;Xu, Xiaodong
提出了一种利用时域激光产生瑞利波测量表面槽宽度的方法。该方法采用两步检测，首先在表面槽的一侧产生瑞利波，然后在另一侧产生瑞利波。两次检测分别在槽缝两侧检测到来自表面槽缝的入射瑞利波和反射瑞利波。表面槽的宽度是根据入射和反射瑞利波的到达时间计算的。实验结果与数码显微镜的测量结果吻合较好，验证了该方法的可行性。该方法将为同时测量表面缝隙的深度和宽度开辟道路，并为极端环境下表面缝隙的表征和地下结构的宽度测量提供潜在的应用。
A method of width gauging of surface slot using laser-generated Rayleigh waves in time domain is presented. A two-step detection is employed in this method, Rayleigh waves are first generated on one side of the surface slot and then on the other side. Incident and reflected Rayleigh waves from surface slot are detected respectively on both sides of the slot in the two detections. Width of surface slot is calculated based on the arrival time of incident and reflected Rayleigh waves. Experiment results agree well with the measured results by digital microscope and validate the feasibility of the proposed method. The approach will open the way for simultaneous measurement of the depth and width of surface slot and provide a potential application for characterization of surface slot in extreme environment and width gauging of subsurface structure.