Abstract：Applying classical wave theory,a concept of equivalent elastic modulus on propagation speed modification of guided wave through“variable cross-section”of metal bar embeded layer was put forward.The transmission mechanism of guided wave at joining-section of metal bars and embeded anchor was analyzed theoretically,and an idea of low-frequency impulse coupled whth guided wave propagating through joining-section was presented.These conceptions might be used for interpreting “time-lag” of signal and leveled phenomena of waveform-signals that were produced on time-domain figures in application of guided wave to operate nondestructive test.
魏立尧；王成；孙远翔；林华长；. 导波在锚固金属杆中传播机理的研究[J]. 岩土工程学报, 2005, 27(12): 1437-1441.
WEI Liyao, WANG Cheng, SUN Yuanxiang, LIN Huachang. Research on propagation mechanism of guided wave through bonding metal bars. Chinese J. Geot. Eng., 2005, 27(12): 1437-1441.
