发明名称 |
Method and means for detecting decay in wood |
摘要 |
A method and apparatus for detecting degradation in wood by applying acoustic waves along the wood grain and measuring the bandwidths and frequencies or standing wave resonances induced in the wood as the frequency of the applied waves is varied. Good quality wood exhibits a substantially harmonic relationship between the frequencies at which resonances occur and the bandwidths of the resonances are relatively small.
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申请公布号 |
US4399701(A) |
申请公布日期 |
1983.08.23 |
申请号 |
US19810268181 |
申请日期 |
1981.05.29 |
申请人 |
UNISEARCH LIMITED |
发明人 |
DUNLOP, JOHN I. |
分类号 |
G01N29/00;G01N29/12;G01N29/34;G01N33/46;(IPC1-7):G01N29/00;G01N24/00 |
主分类号 |
G01N29/00 |
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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