Author:
Wang Qiang,Wang Xinghao,Zhang Lei
Abstract
Abstract
In this study, A GCN distinction network is proposed to identify the defect status of steel corner structures. In this defect determination method, the detected S-scan data is converted into A-scan by Doppler software to form a two-dimensional detection matrix, and the two dimensions are deflection angle stepping and sampling point on the acoustic distance respectively. GCN needs data node relations for GCN’s adjacent matrix, which concludes the shape of the sample and the reflection information and the structure of acoustic beam direction. The conventional inverse and threshold method are introduced in order to enhance classification performance. According to the node and the adjacency matrix relationship between nodes of affiliation and node sampling value automatically set the node label, The GCN model is constructed. Due to the characteristics of GCN, the beam length in the adjacent matrix cannot be changed again in the application test. Except for the detection model of Beamtool software, all other data processes and distinction are carried out automatically. In this study, the PAUT of low-alloy steel (30CrMnSi) was carried out by the PHASCAN II detector, to verify the effectiveness of the research method through natural wave and defect echo experiments which will be confused to distinguish.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Reference18 articles.
1. Pilyugin, S.O. and Lunin, V.P., Determining the probability of detecting flaws in weld joints by phased-array ultrasonic testing, Russ. J. Nondestr. Test., 2016, vol. 52, no. 6, pp. 332–338.
2. Xuemei Li, Changbo Tang, Yongjun Xie, Wenbin Tang, and Zongyi Chen, Simulation of sound field emitted by ultrasonic probe and study of its defect response, Modular Mach. Tool & Autom. Manuf. Technique, 2018.
3. Changchong Liu, Cunpan Yang, Yong Li, Shanonan Wang, Shiwei Cheng, and Yiqi Shen, Reliability analysis method based on the probabilistic fracture detection, Manuf. Technol. & Mach. Tool, 2017.
4. Wafik Hararaa and Ahmad Altahana, Attempt towards the replacement of radiography with phased array ultrasonic testing of steel plate welded joints performed on bridges and other applications, Russ. J. Nondestr. Test., 2018, vol. 54, no. 5, pp. 335–344.
5. Qiang Wang, Kai Zhu, Linlin Wu, Haihang Li, Xiaomeng Xu, and Sifan Gong, Performance evaluation of austenitic stainless steel weld by ultrasonic phased array inspection based on probability of detection, Russ. J. Nondestr. Test., 2020, vol. 56, no. 7, pp. 566–573.