Estimating the diameter/thickness of a pipe using the primary wave velocity of a hollow cylindrical guided wave
Estimating the diameter/thickness of a pipe using the primary wave velocity of a hollow cylindrical guided wave
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使用空心圆柱形导波的主波速估计管道的直径/厚度
DOI：
10.1063/1.1781353
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发表时间：
2004
影响因子：
4
通讯作者：
N. Chubachi
中科院分区：
文献类型：
--
作者：
H. Nishino;M. Takemoto;N. Chubachi
提出了一种利用空心圆柱导波（HCGW）的特性测量管道直径/厚度（dscint）的方法。HCGW是沿管道沿着传播的超声导波。在这封信的第一部分中，我们简要地表明，初级波（第一次到达波包从脉冲源）的HCGW实现更快的群速度为较大的d闪烁。实验验证进行了铝管（几个不同的d闪烁的），使用激光超声的方法来产生HCGW。实验结果与理论预测相当吻合。
A method for measuring the diameter/thickness (d∕t) of a pipe using a characteristic of a hollow cylindrical guided wave (HCGW) is presented. The HCGW is an ultrasonic guided wave propagating along a pipe. In the first part of this letter, we briefly show that the primary wave (first-arriving wave packet from an impulse source) of the HCGW achieves a faster group velocity for a larger d∕t. Experimental verifications were carried out for aluminum pipes (several different d∕t’s) using a laser ultrasonic method to generate the HCGW. The experimental results are in fairly good agreement with the theoretical prediction described.