Reliability research on automatic ultrasonic testing (AUT) technology of land long distance pipeline with automatic welding joint

2018 International Conference on Advanced Materials, Intelligent Manufacturing and Automation

材料科学;机械制造;运输工程

Hu, Yanhua^1,2 ; Niu, Huli^1,2 ; Tang, Deyu^1,2 ; Liu, Jian^1,2 ; Yang, Huaqing^1,2 ; Shen, Yanwei^1,2

CNPC Engineering Technology Research Co. Ltd, No. 40 Jintang Road Tanggu, Tianjin

300451, China^1

Key Laboratory of Offshore Engineering of CNPC, No. 40 Jintang Road Tanggu, Tianjin

300451, China^2

关键词: Automatic welding;    Evaluation systems;    Long distance pipelines;    Metallographic sections;    Probability of detection;    Probability of false alarm;    Quantitative data;    Receiver operating characteristics;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/382/3/032022/pdf
DOI  :  10.1088/1757-899X/382/3/032022

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The complete automatic ultrasonic testing (AUT) reliability theory and evaluation system were established for automatic welding joint of long distance pipeline. The reliability of AUT system was verified by several indexes, including Probability of Detection (POD), Probability of Sizing (POS), Probability of False Alarm (PFA), Probability of Rejection (POR) and Receiver Operating Characteristic (ROC). In order to evaluate AUT process and analysis reliability of AUT system, the sample size was optimized to 46 and the quantitative data of defects in AUT, RT and macroscopic metallographic section were analyzed statistically, which could directly provide reliable quantitative bases for the automatic welding quality acceptance of AUT Technology. The results show that POD and reliability of AUT are not less than RT, which can provide support for AUT application to automatic welding of the domestic long distance pipeline.