| 刀具磨损时声发射信号的谱特征 |
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| 引用本文： | 卢文祥,丁洪,杨叔子.刀具磨损时声发射信号的谱特征[J].华中科技大学学报(自然科学版),1987(2). |
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| 作者姓名： | 卢文祥 丁洪 杨叔子 |
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| 作者单位： | 华中工学院机械工程一系
(卢文祥，丁洪)，华中工学院机械工程一系(杨叔子) |
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| 摘 要： | 本文对车削加工中刀具磨损时声发射信号的谱特征进行了试验研究,运用FFT和ME方法获得了AE信号的谱阵图.分析表明,刀具磨损量与功率谱主峰值具有相应的依存关系;对于相同条件下测得的加速度、声响信号的谱阵图分析,亦得到相类似的变化规律;运用AE信号的谱分析方法,是探寻刀具磨损评估参数的重要途径之一.
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| 关 键 词： | 刀具 声发射 频谱分析 时域分析 熵谱分析 功率频谱 |
Spectral Characteristics of Acoustic Signal Emitted during Tool Wear |
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| Lu Wenxiang Ding Hong Yang Shuzi.Spectral Characteristics of Acoustic Signal Emitted during Tool Wear[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,1987(2). |
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| Authors: | Lu Wenxiang Ding Hong Yang Shuzi |
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| Institution: | Lu Wenxiang Ding Hong Yang Shuzi |
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| Abstract: | Experimental investigations are made on spectral characteristics of acoustic signal emitted during tool wear in turnimg. Spectrum array charts are obtained by FFT and Maximum Entropy (ME) spectrum analysis. It is shown that the amount of tool wear is correlated with the amplitude of main peak in power spectrum. Similar results are obtained for acceleration signal and acoustic signal under the same conditions. |
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| Keywords: | Cutting tools Acoustic emission Frequency spectrum analysis Time domain analysis Emropy spectrum analysis Power spectrum |
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