Acoustic Emission Characteristics of Elevator Wire Ropes in Tensile Test
摘 要
采用声发射技术对电梯钢丝绳拉伸过程进行监测,获取钢丝绳断丝信号,并对断丝信号进行参数分析和波形分析。试验结果表明:声发射检测技术能很好地定性辨识断丝信号。断丝信号具有高幅值高能量的特点,信号幅值在80~100 dB之间或绝对能量在2×106 mV·s以上的信号可定性认定为断丝信号。通过对具有这些特征的信号进行统计,可对钢丝绳断丝情况定量计算,从而推断出钢丝绳的剩余强度。钢丝绳断丝信号为突发型信号,对信号进行快速傅里叶变换可得知断丝信号的频率主要分布在0~220 kHz之间,且在25~50 kHz之间有明显的能量峰值。
Abstract
In this paper, acoustic emission technique was used to monitor the elevator wire ropes in tensile test. Following both parameter analysis and waveform analysis for the broken wire signals, it was found that acoustic emission detection technology could be used to identify broken wire signals qualitatively. Broken wire signals have characteristics with high amplitude and high energy, and those signals with amplitude between 80 dB and 100 dB or absolute energy beyond 2×106 mV·s can be qualitatively identified as broken wire signal. Signals with these characteristics can be quantitatively counted to evaluate the operation situation of wire ropes and then deduce the residual strength and life of wire ropes. Broken wire signal is a kind of burst-type signal. Through fast Fourier transform, it is seen that the frequency of broken wire signals are mainly distributed in the scope from 0 to 220 kHz, and there are distinct energy peaks at the frequency range from 25 kHz to 50 kHz.
中图分类号 TG115.7
所属栏目 试验研究
基金项目 陕西省科学技术研究发展计划资助项目(2012K06-22)
收稿日期 2013/7/3
修改稿日期
网络出版日期
作者单位点击查看
备注李涌泉(1988-),男,硕士研究生,主要从事声发射无损检测技术的研究与应用。
引用该论文: LI Yong-quan,BAI Wen-jie,CAI Meng-yu,LI Li-chan,DUAN Quan. Acoustic Emission Characteristics of Elevator Wire Ropes in Tensile Test[J]. Nondestructive Testing, 2014, 36(1): 71~73
李涌泉,白文杰,柴孟瑜,李丽婵,段权. 电梯钢丝绳拉伸过程中的声发射特征[J]. 无损检测, 2014, 36(1): 71~73
共有人对该论文发表了看法,其中:
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】谭继文.钢丝绳安全检测原理与技术[M].北京:科学出版社,2009:3-10.
【2】曹印妮,张东来,徐殿国,等.钢丝绳定量无损检测现状[J].无损检测,2005,27(2):91-95,106.
【3】杨明纬,耿荣生.声发射检测[M].北京:机械工业出版社,2005:110-115.
【4】CASEY N F, LAURA P A A. A review of the acoustic emission monitoring of wire rope[J]. Ocean Engineering,1997,24(10):935-947.
【5】邵永波.声发射技术在钢丝绳损伤检测中的应用研究[D].沈阳:东北大学,1999.
【6】李丽.钢丝绳疲劳损伤的声发射检测及模式识别[D].长春:吉林工业大学,1999.
【7】聂林,钱晓耀,袁昌明,等.10 kN载荷下钢丝绳拉伸模拟及其声发射特征分析[J].中国计量学院学报,2013,24(1):86-91.
【8】DRUMMOND G, WATSON J F. Acoustic emission from wire ropes during proof load and fatigue testing[J]. NDT&E,2007,40(1):94-101.
【9】沈功田,耿荣生,刘时风,等.声发射信号的参数分析方法[J].无损检测,2002,24(2):72-77.
【10】耿荣生,沈功田,刘时风,等.基于波形分析的声发射信号处理技术[J].无损检测,2002,24(6):257-261.
【2】曹印妮,张东来,徐殿国,等.钢丝绳定量无损检测现状[J].无损检测,2005,27(2):91-95,106.
【3】杨明纬,耿荣生.声发射检测[M].北京:机械工业出版社,2005:110-115.
【4】CASEY N F, LAURA P A A. A review of the acoustic emission monitoring of wire rope[J]. Ocean Engineering,1997,24(10):935-947.
【5】邵永波.声发射技术在钢丝绳损伤检测中的应用研究[D].沈阳:东北大学,1999.
【6】李丽.钢丝绳疲劳损伤的声发射检测及模式识别[D].长春:吉林工业大学,1999.
【7】聂林,钱晓耀,袁昌明,等.10 kN载荷下钢丝绳拉伸模拟及其声发射特征分析[J].中国计量学院学报,2013,24(1):86-91.
【8】DRUMMOND G, WATSON J F. Acoustic emission from wire ropes during proof load and fatigue testing[J]. NDT&E,2007,40(1):94-101.
【9】沈功田,耿荣生,刘时风,等.声发射信号的参数分析方法[J].无损检测,2002,24(2):72-77.
【10】耿荣生,沈功田,刘时风,等.基于波形分析的声发射信号处理技术[J].无损检测,2002,24(6):257-261.
相关信息