Ferromagnetic Components Stress Characterization Based on ACSM

doi:10.3901/JME.2018.10.016

Abstract

Abstract: The key ferromagnetic components in large-scale machinery and equipment are in poor working condition,easy to form stress concentration,and may lead to fatigue damage and crack damage.The accurate evaluation of the degree of stress concentration of ferromagnetic components can effectively prevent the occurrence of dangerous defects.The ACSM system for measuring stress is developed.The hardware part of the system includes the detection probe、excitation module、the signal conditioning circuit and the signal acquisition module.The signal acquisition system is designed based on LabVIEW software.The static stress of Q235 steel is tested.The influence of different stress levels,angle between excitation magnetic field and stress direction and excitation frequency on ACSM detection signal is studied by analyzing and detecting the change characteristics of two-dimensional signal of probe.The experimental results show that only △U_Bx increases linearly with the increase of stress.When the excitation magnetic field is the same as the stress direction (α=0°),the maximum △U_Bx is 160 mV and becomes larger with the increase of α,Maximum 270 mV when α=0°.When f equal or less than 3 kHz,the detection signal △U_Bx increases with the increase of excitation frequency, otherwise the detection signal tends to be stable or reduced.

Key words: ACSM, ferromagnetic components, stress measurement, two dimensional signal

CLC Number:

TG115

SONG Kai, HOU Kai, WANG Chan, XU Cong, WANG Zhen. Ferromagnetic Components Stress Characterization Based on ACSM[J]. Journal of Mechanical Engineering, 2018, 54(10): 16-22.

References

[1] 朱林, 贾民平, 冯月贵,等. 考虑残余应力重分布情况下的裂纹扩展预测研究[J]. 机械工程学报,2017, 53(8):43-49. ZHU Lin, JIA Minping, FENG Yuegui, et al. Study on crack propagation prediction considering redistribution of residual stress[J]. Journal of Mechanical Engineering, 2017, 53(8):43-49.
[2] 宋凯, 周松蔚, 王婵, 等. ACSM法系统设计及铁磁构件应力测量研究[J]. 传感技术学报, 2014, 27(2):267-272. SONG Kai, ZHOU Songwei, WANG Chan, et al. The system of ACSM and research of stress measurement on ferromagnetic components[J]. Journal of Sensors and Actuators, 2014, 27(2):267-272.
[3] 陈天瑞, 项延训, 陈虎, 等. 基于相位-频率测量的材料残余应力超声表征方法[J]. 机械工程学报, 2016, 52(22):9-14. CHEN Tianrui, XIANG Yanxun, CHEN Hu, et al. Ultrasonic characterization of material residual stress based on phase-frequency measurement[J]. Journal of Mechanical Engineering, 2016, 52(22):9-14.
[4] 阎红娟,徐春广,肖定国,等. 金属材料拉伸应力非线性超声特性研究[J]. 机械工程学报, 2016, 52(6):22-29. YAN Hongjuan, XU Chunguang, XIAO Dingguo, et al. The study of nonlinear ultrasonic characteristics of tensile stress of metal materials[J]. Journal of Mechanical Engineering, 2016, 52(6):22-29.
[5] WANG Renzhi, RU Jilai. Overall evaluation of the effect of residual stress induced by shot peening in the improvement of fatigue fracture resistance for metallic materials[J]. Chinese Journal of Mechanical Engineering, 2015, 28(2):416-421.
[6] 郑卜祥, 宋永伦, 席峰,等. 对接焊铝合金板材残余应力的X射线测试[J]. 机械工程学报, 2009, 45(3):275-281. ZHENG Buxiang, SONG Yonglun, XI Feng, et al. Residual stress measurement of butt-welded aluminium alloy plates by X-ray[J]. Journal of Mechanical Engineering, 2009, 45(3):275-281.
[7] 李大林, 陈鲁, 张其林. X射线衍射法在既有钢结构应力检测中的应用[J]. 施工技术, 2010, 39(9):111-113. LI Dalin, CHEN Lu, ZHANG Qilin. Application of X-ray diffraction method in stress measurement of existing steel strucures[J]. Journal of Construction Technology, 2010, 39(9):111-113.
[8] 胡永会, 吴运新, 陈磊, 等. X射线法测量淬火铝合金厚板表面残余应力[J]. 中国材料进展, 2011, 30(2):51-55. HU Yonghui, WU Yunxin, CHEN Lei, et al. Experimental measurement of surface residual stresses of quenched aluminum alloy thick plate by X-ray method[J]. Journal of Materials China. 2011, 30(2):51-55.
[9] DING X, WU X J, WANG Y G. Bolt Axial stress measurement based on a mode-converted ultrasound method using an electromagnetic acoustic transducer[J]. Ultrasonics, 2014, 54(3):914-920.
[10] 徐春广, 李骁, 潘勤学, 等. 螺栓拉应力超声无损检测方法[J]. 应用声学, 2014, 33(2):102-106. XU Chunguang, LI Xiao, PAN Qinxue, et al. Bolt sress measurements by ultrasonic non-destructive methods[J]. Journal of Applied Acoustics, 2014, 33(2):102-106.
[11] LOW C K, WONG B S. Defect evaluation using the alternating current field measurement technique[J]. Or Insight, 2004, 46(10):598-605.
[12] KNIGHT M J, BRENNAN F P, DOVER W D. Effect of residual stress on ACFM crack measurements in drill collar threaded connections[J]. NDT&E International, 2004, 37(5):337-343.
[13] CHEN K, BRENNAN F P, DOVER W D. Thin-skin AC field in anisotropic rectangular bar and ACPD stress measurement[J]. NDT&E International, 2000, 33(5):317-323.
[14] CHEN K, BRENNAN F P. A theoretical and experimental study of alternating current stress measurement under different loading modes[J]. Journal of Strain Analysis for Engineering Design, 1998, 33(4):291-303.
[15] HAN S, BRENNAN F P, DOVER W D. Development of the alternating current stress measurement model for magnetostriction behavior of mild steel under orthogonal magnetic fields for stress measurement[J]. Journal of Strain Analysis for Engineering Design, 2002, 37(1):21-31.
[16] 曾杰伟, 苏兰海, 徐立坪,等. 逆磁致伸缩效应钢板内应力检测技术研究[J]. 机械工程学报,2014, 50(8):17-22. ZENG Jiewei, SU Lanhai, XU Liping, et al. Research on the stress measurement of steel plate based on inverse magnetostrictinve effect[J]. Journal of Mechanical Engineering, 2014, 50(8):17-22.
[17] 王威. 钢结构磁力耦合应力检测基本理论及应用技术研究[D]. 西安:西安建筑科技大学, 2005. WANG Wei. Study on basic theory and applied technology of steel structure magnetic coupling stress testing[D]. Xi'an:Xi'an University of Architecture & Technology, 2005.