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Author:

何存富 (何存富.) (Scholars:何存富) | 孙雅欣 (孙雅欣.) | 吴斌 (吴斌.) (Scholars:吴斌) | 王秀彦 (王秀彦.) (Scholars:王秀彦) | 张青 (张青.)

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incoPat zhihuiya

Abstract:

本发明是一种利用超声导波无损检测埋置于不同介质中锚杆长度的方法,属于无损检测领域。该方法是先确定自由锚杆的参数,计算自由锚杆群速度频散曲线;从该曲线上选取检测频率并输入任意函数发生器(1)生成单音频信号,经功率放大模块(2)、转换开关模块(3)、导波收发元件(4),在锚杆中激励纵向轴对称导波模态;该导波模态遇到锚杆端部产生端面回波,该端面回波经导波收发元件4、转换开关模块3、增益放大模块5传至示波器6;确定端面回波对应时间,从自由锚杆群速度频散曲线中获取群速度,用此群速度乘以端面回波时间,除以2,得到工程锚杆的长度。本发明具有无需考虑锚杆周围介质、检测准确度高、检测成本低等优点。

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Patent Info :

Type: 发明授权

Patent No.: CN200610078641.4

Filing Date: 2006-04-29

Publication Date: 2008-03-12

Pub. No.: CN100374819C

Applicants: 北京工业大学

Legal Status: 未缴年费

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 10

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