New Nondestructive Testing Equipment by Fixed Probe Based onthe Contact Potential Difference Method
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摘要: 介紹了接觸電位差法固定探頭式無損探傷裝置的結構,工作原理,測量電路及其頻率特性.試驗結果表明:該裝置對局部狹窄的金屬表面發生的龜裂或動態疲勞損傷過程中或初期的探測是有效的.Abstract: The structure, working principle, measuring circuit and frequency characteristics of contact potential difference nondestructive testing equipment using fixed probe am intro-duced. It is demonstrated by the experimental result that this equipment is effective for testing the local narrow dynamic endurance failure on the surface of metal.
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Key words:
- contact potential difference method /
- fixed probe /
- nondestructive testing
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