| 基于声发射信号的柴油机排气阀故障诊断试验研究 |
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| 引用本文： | 余永华,卢东升,杨建国. 基于声发射信号的柴油机排气阀故障诊断试验研究[J]. 武汉理工大学学报, 2011, 0(8) |
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| 作者姓名： | 余永华 卢东升 杨建国 |
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| 作者单位： | 武汉理工大学能源与动力工程学院;船舶动力工程技术交通行业重点实验室; |
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| 基金项目： | 国家自然科学基金(51009112) |
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| 摘 要： | 气阀的撞击和气体压力的冲击均会产生声发射信号,声发射信号的频率范围宽,信息量丰富,在无损检测领域已得到了广泛应用,将声发射传感器引入柴油机排气阀的故障监测诊断中,以WP10.240N型柴油机为研究对象,搭建试验测试平台,模拟3种类型的排气阀故障,通过试验研究了柴油机气阀在不同状态下声发射信号特征,提取了与排气阀故障相关的特征参数,探索了基于声发射信号的柴油机气阀故障诊断的可行性。
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| 关 键 词： | 排气阀 故障诊断 声发射 |
Experimental Research on Fault Diagnosis for Exhaust Valve of Diesel Engines Based on Acoustic Emission Signals |
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| YU Yong-hua ,,LU Dong-sheng,YANG Jian-guo . Experimental Research on Fault Diagnosis for Exhaust Valve of Diesel Engines Based on Acoustic Emission Signals[J]. Journal of Wuhan University of Technology, 2011, 0(8) |
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| Authors: | YU Yong-hua LU Dong-sheng YANG Jian-guo |
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| Affiliation: | YU Yong-hua 1,2,LU Dong-sheng1,YANG Jian-guo 1,2(1.School of Energy and Power Engineering,Wuhan University of Technology,Wuhan 430063,China,2.Key Lab of Marine Power Engineering &Technology of Ministry of Communications,China) |
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| Abstract: | Acoustic emission signal occurs due to impact of valves opening and closing and impulse of cylinder pressure,which is characterized by a broad range of frequency and rich information about functioning and condition of diesel engines.Therefore,it has been used as a nondestructive examination method.In this work,three exhaust valve artificial fault experiments are conducted in a test platform of WP10.240N diesel engine in order to investigate the feasibility of monitoring the condition of exhaust valve of a d... |
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| Keywords: | exhaust valve diagnosis acoustic emission |
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