Monitoring of tensile fracture damage state of 4130X steel based on DIC and acoustic emission technology
-
摘要: 4130X钢是压缩天然气高压气瓶组的主要材料，为得到其受载作用下的损伤演化规律，采用数字图像相关技术（DIC）与声发射技术相结合，开展了4130X钢拉伸断裂损伤状态监测试验。采用拉伸试件表面应变标准差（SD）表征其损伤演化规律，并与损伤过程声发射信号特征参数经历分析相结合，得到了4130X钢在弹性微损伤、塑性损伤、裂纹扩展状态下的声发射信号强度分布规律。试验结果表明，采用DIC和声发射技术相结合的分析方法，能够得到4130X钢拉伸断裂过程的损伤演化规律，可为其服役状态下的损伤状态监测提供参考。Abstract: 4130X steel is the main material of compressed natural gas high-pressure gas cylinders. In order to obtain the damage evolution law under load, digital image correlation technology (DIC) and acoustic emission technology are combined to monitor the tensile fracture damage state of 4130X steel. The surface strain standard deviation (SD) of the tensile specimen was used to characterize the damage evolution law, and combined with the experience analysis of the acoustic emission signal characteristic parameters of the damage process, the acoustic micro-damage, plastic damage, and crack growth of 4130X steel were obtained. The distribution of the intensity of the transmitted signal. The test results show that the analysis method combining DIC and acoustic emission technology can obtain the damage evolution law of 4130X steel during tensile fracture process, which can provide a reference for the damage state monitoring in service state.
-
Keywords:
- 4130X steel /
- DIC /
- acoustic emission /
- tensile fracture damage
-
-
[1] 戴光. 声发射检测技术在中国——庆祝中国机械工程学会无损检测分会成立三十周年[J].无损检测,2008,30(7):389-396. [2] 潘兵, 吴大方,高镇同,等.1200℃高温热环境下全场变形的非接触光学测量方法研究[J].强度与环境,2011,38(1):52-59. [3] 黄兴震. 基于ESPI和DIC技术的混凝土拉伸软化曲线试验研究[D].贵阳:贵州大学,2018. [4] YAMAGUCHI I.A laser-speckle strain gauge[J].Journal of Physics E:Scientific Instruments,1981,14(11):1270-1273.
[5] LU Y L,LI W S,WANG L G,et al.In-situ microscale visualization experiments on microcracking and microdeformation behaviour around a pre-crack tip in a three-point bending sandstone[J].International Journal of Rock Mechanics and Mining Sciences,2019,114:175-185.
[6] ZHANG H,FU D H,SONG H P,et al.Damage and fracture investigation of three-point bending notched sandstone beams by DIC and AE techniques[J].Rock Mechanics and Rock Engineering,2015,48(3):1297-1303.
[7] FARHIDZADEH A,MPALASKAS A C,MATIKAS T E,et al.Fracture mode identification in cementitious materials using supervised pattern recognition of acoustic emission features[J]. Construction and Building Materials,2014,67:129-138.
[8] WILDEMANN V E,SPASKOVA E V,SHILOVA A I.Research of the damage and failure processes of composite materials based on acoustic emission monitoring and method of digital image correlation[J].Solid State Phenomena,2015,243:163-170.
[9] DIAKHATE M,BASTIDAS-ARTEAGA E,MOUTOU PITTI R,et al.Cluster analysis of acoustic emission activity within wood material:Towards a real-time monitoring of crack tip propagation[J].Engineering Fracture Mechanics,2017,180:254-267.
[10] 纪洪广, 张天森,张志勇,等.无损检测中常用声发射参数的分析与评价[J].无损检测,2001,23(7):289-291,294. [11] 张昭, 肖迎春,王倩,等.TC18钛合金疲劳断裂过程声发射信号特征分析[J].航空工程进展,2015,6(4):502-506. [12] 司刚强, 李伟,徐海丰,等.基于DIC和声发射的TC4合金疲劳损伤状态监测方法[J].东北石油大学学报,2020,44(3):119-126,12.
计量
- 文章访问数: 2
- HTML全文浏览量: 0
- PDF下载量: 2
下载:
