%0 Journal Article
%T STUDY ON OPTIMUM EXCITATION WAVE IN GROUT QUALITY NONDESTRUCTIVE TESTING OF ROCK BOLT<br>锚杆锚固质量无损检测中的激发波研究
%A ZHANG Changsuo
%A LI Yi
%A ZHAO Yangsheng
%A STEVE Zou
%A <br>张昌锁
%A 李义
%A 赵阳升
%A STEVE Zou
%J 岩石力学与工程学报
%D 2006
%I 
%X Numerical simulation and experimental testing are used to study wave propagation characteristics in grouted rock bolt. Both show that the waves which propagate in grouted rock bolt are guided waves and different frequencies have different wave velocities and attenuation characteristics. There is an optimum excitation signal which has smallest attenuation in the grouted structure and can propagate for longest distance in the grouted rock bolt. The optimum excitation signal for our experimental grouted structure which makes clearest end reflection is firstly found by numerical simulations. And then the experimental set-up and transducers are made and the experiment testing results agree well with the numerical simulation showing that the optimum excitation signal can increase greatly the penetration range of ultrasonic wave greatly.
%K rock mechanics
%K guided wave
%K grout quality
%K optimum excitation wave<br>岩石力学
%K 导波
%K 锚固质量
%K 最佳激发波
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=D3421FAA1A0A0F0C&jid=35E747D791A1346351AFB523B7FA35CB&aid=08550CA74EF7FA4A&yid=37904DC365DD7266&vid=C5154311167311FE&iid=B31275AF3241DB2D&sid=4B24DA4DB6EBAD78&eid=076A4355FDA11BCF&journal_id=1000-6915&journal_name=岩石力学与工程学报&referenced_num=5&reference_num=13