Fractal characterization of shear fracture interface of TA2/Q235 explosive composite plate under service environment
YANG Hong-bo1, KANG Jia1, GUO Long-chuang2, YAO Pei-wen1, LIU Huan1
1. School of Metallurgical Engineering, Xi′an University of Architecture and Technology, Xi′an 710055, Shaanxi, China; 2. BaoTi Group, Baoji 721003, Shaanxi, China
Abstract：In order to quantitatively study the relationship between shear strength and fractal dimension,and multifractal spectrum of TA2/Q235 explosive welded composite plate under service condition,and to identify the best fractal characterization method for TA2/Q235 composite plates,the service processes were simulated by heat treatment,shear experiments of the samples after service were carried out,and the fractal theory was introduced to characterize the shear fracture interface. The purpose of the above study is to establish the relation among shear strength,fractal dimension,and multiple fractal spectrums. The results show that after 200,400 and 600 ℃ service,the shear strength of the sample is negatively correlated with the width of the fracture multiple fractal spectrum. Combining with the analysis of the influence of residual stress elimination and recrystallization growth on shear fracture morphology of TA2/Q235 explosive composite plate,and comparing with fractal dimension,the multifractal spectrum can more accurately describe the mechanics′ information of fracture interface.
杨洪波, 康佳, 郭龙创, 姚沛文, 刘环. 服役环境下TA2/Q235爆炸复合板剪切断口分形表征[J]. 钢铁, 2020, 55(10): 115-119.
YANG Hong-bo, KANG Jia, GUO Long-chuang, YAO Pei-wen, LIU Huan. Fractal characterization of shear fracture interface of TA2/Q235 explosive composite plate under service environment[J]. Iron and Steel, 2020, 55(10): 115-119.
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2020, Vol. 55 
