静载拉伸和低周疲劳下Q235钢磁声发射特性

doi:10.3969/j.issn.1000-1093.2021.01.021

摘要/Abstract

摘要： 为揭示应力与磁声发射的关系以及明确磁声发射与铁磁性金属材料疲劳状态的关系，建立Q235钢静载拉伸的力-磁耦合模型和低周疲劳寿命模型，开展磁声发射的应用与理论研究。从有限元仿真的角度分析静载拉伸下磁声发射信号产生机理，根据低周疲劳仿真结果设计磁声发射低周疲劳试验。通过自行搭建的试验平台，验证建立的静载拉伸模型和低周疲劳模型，研究静态拉伸和低周疲劳两种状态下的磁声发射信号规律。结果表明：在静载拉伸下，在弹性范围内磁导率随着拉应力的增大呈现出线性增大的趋势，导致试件上的损耗增大，同时磁声发射信号变弱，磁声发射信号的均方根电压和包络面积呈下降趋势;在低周疲劳下，Q235钢低周疲劳寿命可以通过Smith-Watson-Topper模型进行预测，且Q235钢磁声发射信号的振幅、脉冲计数特征参数随着循环周次的增大也呈现出下降的趋势;研究成果明确了应力对磁声发射的影响以及疲劳状态对磁声发射的影响，为磁声发射的特征提取与模式识别提供了理论参考依据。

关键词: Q235钢, 磁声发射, 铁磁性金属材料, 静载拉伸, 低周疲劳, 有限元分析

Abstract: A force-magnetic coupling model of Q235 steel under static load tension and a low cycle fatigue life model are established to study the relationship between stress and magnetoacoustic emission (MAE) and the relationship between magnetoacoustic emission and fatigue state of ferromagnetic metal materials. From the perspective of finite element simulation, the generating mechanism of magnetoacoustic emission signals under static load tension is analyzed. According to the simulated results, the low cycle fatigue test of MAE is designed, and a self-built test platform is used to verify the proposed models. The law of magnetoacoustic emission signals under static load tension and low cycle fatigue was studied. The experimental results show that the permeability shows a linear increasing trend with the increase in the tensile stress in the elastic range under static tension, which leads to the increase in the loss on the specimen and the weakening of MAE signal. The root mean square voltage and envelope area of magnetoacoustic emission signal show a downward trend. However, during low cycle fatigue, the low cycle fatigue life of Q235 steel can be predicted by Smith-Watson-Topper model, and the amplitude and pulse counting characteristic parameters of Q235 steel decrease with the increase in cycle number. The obtained results clarify the influence of stress on MAE and fatigue state on MAE.

Key words: Q235steel, magnetoacousticemission, ferromagneticmetalmaterial, statictension, lowcyclefatigue, finiteelement

中图分类号:

TG115.27⁺1

李志农, 曾文钧, 闻庆松, 沈功田, 沈永娜. 静载拉伸和低周疲劳下Q235钢磁声发射特性[J]. 兵工学报, 2021, 42(1): 185-191.

LI Zhinong, ZENG Wenjun, WEN Qinsong, SHEN Gongtian, SHEN Yongna. Magnetoacoustic Emission Characteristics of Q235 Steel under Static Load Tension and Low Cycle Fatigue[J]. Acta Armamentarii, 2021, 42(1): 185-191.

参考文献

［1］沈永娜, 沈功田, 柯卫杰, 等. 磁声发射检测技术研究进展［J］.无损检测, 2017, 39(5):87-98.
SHEN Y N, SHEN G T, KE W J, et al. The resarch progress of magneto acoustic emission testing technique［J］. Nondestructive Testing, 2017, 39(5): 87-98. (in Chinese)
［2］ SHIBATA M, ONO K. Magnetomechanical acoustic emission-a new method for non-destructive stress measurement［J］. NDT International, 1981, 14(5): 227-234.
［3］ AUGUSTYNIAK B, PIOTROWSKI L, MACIAKOWSKI P, et al. Study of microstress state of P91 steel using complementary mechanical Barkhausen, magnetoacoustic emission, and X-ray diffraction techniques［J］. Journal of Applied Physics, 2014, 115(17): 17E306.
［4］ AUGUSTYNIAK B, PIOTROWSKI L, JASNOCH P, et al. Impact of tensile and compressive stress on classical and acoustic Barkhausen effects in grain-oriented electrical steel［J］. IEEE Transactions on Magnetics, 2014,50(4):1-4.
［5］ PIOTROWSKI L, AUGUSTYNIAK B, CHMIELEWSKI M, et al. Possibility of application of magnetoacoustic emission for the assessment of plastic deformation level in ferrous materials［J］. IEEE Transactions on Magnetics,2011,47(8):2087-2092.
［6］ PIOTROWSKI L, AUGUSTYNIAK B, CHMIELEWSKI M, et al. Study on the applicability of the measurements of magnetoelastic properties for a nondestructive evaluation of thermally induced microstructure changes in the P91 grade steel［J］. NDT & E International, 2012, 47:157-162.
［7］沈功田. 硅钢与45钢的磁声发射研究［D］.武汉:武汉大学, 1985.
SHEN G T. Study on magnetoacoustic emission of silicon steel and 45 steel［D］. Wuhan: Wuhan University, 1985. (in Chinese)
［8］ WILSON J W, TIAN G Y, MOORTHY V, et al. Magneto-acoustic emission and magnetic Barkhausen emission for case depth measurement in En36 gear steel［J］. IEEE Transactions on Magnetics, 2009, 45(1):177-183.
［9］ BUTTLE D J, BRIGGS G A D, JAKUBOVICS J P, et al. Magnetoacoustic and Barkhausen emission in ferromagnetic materials［J］. Philosophical Transactions of the Royal Society A：Mathematical, Physical and Engineering Sciences, 1986, 320(1554):363-376.
［10］ BUTTLE D J, SCRUBY C B, JAKUBOVICS J P, et al. Magneto-acoustic and Barkhausen emission: their dependence on dislocations in iron［J］. Philosophical Magazine A, 1987, 55(6): 717-734.
［11］吴明涛. Q235钢的磁声发射信号特征研究［D］. 南昌:南昌航空大学,2018.
WU M T. Research on magnetoacoustic emission features of Q235 steel［D］. Nanchang: Nanchang Hangkong University, 2018. (in Chinese)
［12］ HIRASAWA T, SAITO K, CHUJOW N, et al. Nondestructive evaluation of aged materials used in nuclear power plant by magneto-mechanical acoustic emission technique［C］∥Proceedings of the 7th International Conference on Nuclear Engineering. Tokyo , Japan: Lund University Cognitive Science,1999: 1-9.
［13］柯卫杰. 铁磁性金属材料的磁声发射研究［D］. 南昌:南昌航空大学,2016.
KE W J. Research of magnetomechanical aeoustic emission on ferro-magnetic material［D］. Nanchang: Nanchang Hangkong University,2016. (in Chinese)
［14］张文君. 磁声发射检测系统的开发与研究［D］.南昌:南昌航空大学,2019.
ZHANG W J. Development and research of magnetoacoustic emission detection system ［D］. Nanchang: Nanchang Hangkong University, 2019. (in Chinese)
［15］刘怡,胡博,代占鑫,等.Q235钢短裂纹扩展的力-磁耦合模拟［J］.金属热处理,2018, 43(12):226-231
LIU Y, HU B, DAI Z X, et al. Simulation of short crack propagation in Q235 steel based on coupling of stress and magnetic［J］. Heat Treatment of Metals, 2018, 43(12): 226-231. (in Chinese)
［16］杨俊,李承彬,谢寿生.涡轮盘多轴低循环疲劳寿命预测及试验验证［J］.航空动力学报, 2011, 26(10): 2220-2226.
YANG J, LI C B, XIE S S. Multiaxial low cycle fatigue life prediction and test verification for turbine disk［J］. Journal of Aerospace Power, 2011, 26(10): 2220-2226. (in Chinese)

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