Small sample reliability analysis of automatic ultrasonic testing of austenitic steel defect
Reliability analysis of the procedure of ultrasonic technique before inspection has been proved to be essential to ensure the equipment operation safety. The conventional evaluation methods are based on statistical models and a remarkable sample size is needed to get an accurate result. In this work, the Bootstrap model for small sample data is established based on the re-sampling technique. The probability of detection (POD) curves in different conditions are calculated based on the Bootstrap model, and then used to quantitatively analyze the influence of inspection parameter on stainless steel auto ultrasonic testing result. The calculated result based on bootstrap model is compared with the method based on model assisted POD. The results indicate that Bootstrap model is an efficient tool for the reliability analysis of inspection with small sample data and insure the inspection results.
Bootstrap Ultrasonic Testing Reliability Analysis
Zhang Jun Ding Hui Li Ming Ma Guanbing
Centre of NDT, Wuhan University, Wuhan, China CGNPPC Inspection Technology CO, LTD, Suzhou, China
国际会议
武汉
英文
72-76
2012-07-29（万方平台首次上网日期，不代表论文的发表时间）