发明名称 |
Nondestructive method for detecting structural anomalies in composites |
摘要 |
A nondestructive inspection method for composite structures, including thick core structures, is disclosed that imparts a vibration force into the structure and analyzes the response over a range of frequencies to find possible damaged areas. The composite structure is struck to induce vibration at a series of test points and the response of the composite structure as a function of acceleration at each test point is measured. The structural anomalies in the composite structure occur at structural stiffness irregularities near anomalies and are detected with a Gapped Smoothing Method operating on the data and plotting a structural irregularity index as a function of frequency and position.
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申请公布号 |
US6799126(B1) |
申请公布日期 |
2004.09.28 |
申请号 |
US20030400646 |
申请日期 |
2003.03.28 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY |
发明人 |
RATCLIFFE COLIN P.;CRANE ROGER M. |
分类号 |
C21B7/24;G01B5/28;G01N29/02;G01N29/14;G01N29/42;G06F19/00;(IPC1-7):G06F19/00 |
主分类号 |
C21B7/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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