Q345R钢蠕变过程声发射特性实验研究
|
摘要
声发射测试技术由于实时、连续、在线监测的特点,被越来越多地应用于材料性能的研究,但由于蠕变实验温度过高,超过传感器使用温度限制,因此在金属材料蠕变损伤领域还尚属空白。本文以Q345R钢为例,设计蠕变声发射监测专用的夹具导波机构,进行Q345R钢蠕变声发射监测实验。监测结果表明,蠕变损伤过程的声发射活动表现出与蠕变曲线相类似的阶段性特征。蠕变初期撞击数较多,声发射较为活跃;随着损伤的演进,试件进入稳态蠕变阶段,声发射活动渐趋平稳,日平均撞击数趋于稳定值;蠕变后期,能量快速释放,声发射活动加剧,试件发生蠕变断裂。
Acoustic emission(AE)testing technology has been used more and more widely to study material properties due to its advantages such as real-time,continuous and online monitoring.However,creep experiment temperature is far higher than the service temperature of AE sensor.This disadvantage restricts the application of acoustic emission technology in the field of metal creep damage.In this paper,taking Q345 Rsteel as example,a waveguide fixture structure was designed to monitor the Q345 R steel creep damage process,which has solved the temperature problem.Experimental results manifest that AE activities in creep process can be divided into different stages,which is similar to creep curve.On the initial creep stage,there are many impacts,so acoustic emission phenomenon is very active.With the evolution of damage,specimen enters a steady creep stage,the acoustic emission activity becomes stable,the daily average impact number tends to a stable value.On the later stage of creep,energy is released rapidly,AE activity is intensified,specimen ruptures due to creep at last.
Acoustic emission(AE)testing technology has been used more and more widely to study material properties due to its advantages such as real-time,continuous and online monitoring.However,creep experiment temperature is far higher than the service temperature of AE sensor.This disadvantage restricts the application of acoustic emission technology in the field of metal creep damage.In this paper,taking Q345 Rsteel as example,a waveguide fixture structure was designed to monitor the Q345 R steel creep damage process,which has solved the temperature problem.Experimental results manifest that AE activities in creep process can be divided into different stages,which is similar to creep curve.On the initial creep stage,there are many impacts,so acoustic emission phenomenon is very active.With the evolution of damage,specimen enters a steady creep stage,the acoustic emission activity becomes stable,the daily average impact number tends to a stable value.On the later stage of creep,energy is released rapidly,AE activity is intensified,specimen ruptures due to creep at last.
引文
[1]王非,林英.化工设备用钢[M].北京:化学工业出版社,2004(WANG Fei,LIN Ying.Steel for chemical equipment[M].Beijing:Chemical Industry Press,2004(in Chinese))
[2]陈学东,范志超,江慧丰,等.复杂加载条件下压力容器典型用钢疲劳蠕变寿命预测方法[J].机械工程学报,2009,45(2):81-87(CHEN Xuedong,FAN Zhichao,JIANG Huifeng,et al.Creep-fatigue life prediction methods of pressure vessel typical steels under complicated loading conditions[J].Journal of Mechanical Engineering,2009,45(2):81-87(in Chinese))
[3]范志超,陈学东,蒋家羚.16MnR钢循环蠕变-疲劳交互作用损伤力学模型[J].固体力学学报,2006,27(1):65-70(FAN Zhichao,CHEN Xuedong,JIANG Jialing.Cyclic creep and fatigue interaction CDM model of16MnR steel[J].Acta Mechanica Solida Sinica,2006,27(1):65-70(in Chinese))
[4]Kaiser E J.A study of acoustic phenomena in tensile test[D].Munich,Germany:Technische Hochschule Munchen,1953.
[5]岳亚霖,韦朋余,张炜,等.船用金属材料声发射信号特性研究[J].实验力学,2008,23(6):496-501(YUE Yalin,WEI Pengyu,ZHANG Wei,et al.Investigation on characteristics of acoustic emission signal for marine metal materials[J].Journal of Experimental Mechanic,2008,23(6):496-501(in Chinese))
[6]Rabiei Masoud,Modarres Mohammad.Quantitative methods for structural health management using in situ acoustic emission monitoring[J].International Journal of Fatigue,2013,49:81-89.
[7]Khamedi R,Fallahi A,Refahi Oskouei,et al.Effect of martensite phase volume fraction on acoustic emission signals using wavelet packet analysis during tensile loading of dual phase steels[J].Materials and Design,2010,31(6):2752-2759.
[8]Mahendra Prabhu N,Gopal K A,Murugan S,et al.Determining the feasibility of identifying creep rupture of stainless steel cladding tubes on-line using acoustic emission technique[J].International Journal of Structural Integrity,2015,6(3):410-418.
[9]Verstrynge Els,Schueremans Luc,Van Gemert Dionys,et al.Monitoring and predicting masonry′s creep failure with the acoustic emission technique[J].NDT and E International,2009,42(6):518-523.
[10]杨永杰,王德超,赵南南,等.煤岩蠕变声发射特征试验研究[J].应用基础与工程科学学报,2013,21(1):159-166(YANG Yongjie,WANG Dechao,ZHAO Nannan,et al.Acoustic emission characteristics of coal creep under step load[J].Journal of Basic Science and Engineering,2013,21(1):159-166(in Chinese))
[11]陈亮,刘建锋,王春萍,等.不同温度及应力状态下北山花岗岩蠕变特征研究[J].岩石力学与工程学报,2015,34(6):1228-1235(CHEN Liang,LIU Jianfeng,WANG Chunping,et al.Creeping behavior of beishan granite under different temperatures and stress conditions[J].Chinese Journal of Rock Mechanics and Engineering,2015,34(6):1228-1235(in Chinese))
[12]符浩,王维斌,周进节,等.基于相关的超声导波检测信号分析方法[J].压力容器,2011,28(7):59-64(FU Hao,WANG Weibin,ZHOU Jinjie,et al.Method of ultrasonic guided wave signal analysis based on correlation[J].Pressure Vessel Technology,2011,28(7):59-64(in Chinese))
[2]陈学东,范志超,江慧丰,等.复杂加载条件下压力容器典型用钢疲劳蠕变寿命预测方法[J].机械工程学报,2009,45(2):81-87(CHEN Xuedong,FAN Zhichao,JIANG Huifeng,et al.Creep-fatigue life prediction methods of pressure vessel typical steels under complicated loading conditions[J].Journal of Mechanical Engineering,2009,45(2):81-87(in Chinese))
[3]范志超,陈学东,蒋家羚.16MnR钢循环蠕变-疲劳交互作用损伤力学模型[J].固体力学学报,2006,27(1):65-70(FAN Zhichao,CHEN Xuedong,JIANG Jialing.Cyclic creep and fatigue interaction CDM model of16MnR steel[J].Acta Mechanica Solida Sinica,2006,27(1):65-70(in Chinese))
[4]Kaiser E J.A study of acoustic phenomena in tensile test[D].Munich,Germany:Technische Hochschule Munchen,1953.
[5]岳亚霖,韦朋余,张炜,等.船用金属材料声发射信号特性研究[J].实验力学,2008,23(6):496-501(YUE Yalin,WEI Pengyu,ZHANG Wei,et al.Investigation on characteristics of acoustic emission signal for marine metal materials[J].Journal of Experimental Mechanic,2008,23(6):496-501(in Chinese))
[6]Rabiei Masoud,Modarres Mohammad.Quantitative methods for structural health management using in situ acoustic emission monitoring[J].International Journal of Fatigue,2013,49:81-89.
[7]Khamedi R,Fallahi A,Refahi Oskouei,et al.Effect of martensite phase volume fraction on acoustic emission signals using wavelet packet analysis during tensile loading of dual phase steels[J].Materials and Design,2010,31(6):2752-2759.
[8]Mahendra Prabhu N,Gopal K A,Murugan S,et al.Determining the feasibility of identifying creep rupture of stainless steel cladding tubes on-line using acoustic emission technique[J].International Journal of Structural Integrity,2015,6(3):410-418.
[9]Verstrynge Els,Schueremans Luc,Van Gemert Dionys,et al.Monitoring and predicting masonry′s creep failure with the acoustic emission technique[J].NDT and E International,2009,42(6):518-523.
[10]杨永杰,王德超,赵南南,等.煤岩蠕变声发射特征试验研究[J].应用基础与工程科学学报,2013,21(1):159-166(YANG Yongjie,WANG Dechao,ZHAO Nannan,et al.Acoustic emission characteristics of coal creep under step load[J].Journal of Basic Science and Engineering,2013,21(1):159-166(in Chinese))
[11]陈亮,刘建锋,王春萍,等.不同温度及应力状态下北山花岗岩蠕变特征研究[J].岩石力学与工程学报,2015,34(6):1228-1235(CHEN Liang,LIU Jianfeng,WANG Chunping,et al.Creeping behavior of beishan granite under different temperatures and stress conditions[J].Chinese Journal of Rock Mechanics and Engineering,2015,34(6):1228-1235(in Chinese))
[12]符浩,王维斌,周进节,等.基于相关的超声导波检测信号分析方法[J].压力容器,2011,28(7):59-64(FU Hao,WANG Weibin,ZHOU Jinjie,et al.Method of ultrasonic guided wave signal analysis based on correlation[J].Pressure Vessel Technology,2011,28(7):59-64(in Chinese))