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202106012.pdf
文章编号： 1672-6987（2021）06-0096-05； DOI： 10.16351/j.1672-6987.2021.06.012
王静， 凌元锦*(青岛科技大学 环境与安全工程学院，山东 青岛 266042)
摘要： 提出了一种新的缺陷检出概率（POD）模型，用于评估涡流探头在奥氏体不锈钢中缺陷的检测能力。传统的POD模型在选取决策阈值时，POD曲线会随着决策阈值的改变而改变，所以无法确定哪一个决策阈值是最合理的。本工作中提出的新POD模型不受主观选取决策阈值的影响，结果呈现出一条独立的POD曲线。实验结果表明，新POD模型用于评估涡流探头在奥氏体不锈钢中缺陷的检测能力更为合理。
关键词： 无损检测; 涡流检测; 缺陷检出概率; 随机决策阈值
中图分类号： TQ 328文献标志码： A
引用格式： 王静， 凌元锦. 奥氏体不锈钢上缺陷涡流探头POD新模型［J］. 青岛科技大学学报(自然科学版), 2021, 42(6): 96-100.
WANG Jing, LING Yuanjin. Novel POD model of eddy current probes for inspecting pits on austenitic stainless steel［J］. Journal of Qingdao University of Science and Technology（Natural Science Edition), 2021， 42（6）： 96-100.
Novel POD Model of Eddy Current Probes for Inspecting
Pits on Austenitic Stainless SteelWANG Jing, LING Yuanjin
(College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042, China)
Abstract: This article proposes a new probability of detection (POD) model to evaluate the detection capability of eddy current probes for inspecting pits austenitic stainless steel. When the traditional POD model determines the decision threshold, the POD curve has a lot of changes as the decision threshold changes, there is no clear reason to insist which threshold is reasonable. The newly proposed POD model is not affected by the objective selection of the decision threshold and presents an independent POD curve. The experimental results show that the proposed model is more reasonable than traditional ones for evaluating the detection capability of eddy current probes.
Key words: nondestructive testing; eddy current testing; probability of detection; stochastic decision threshold
收稿日期： 2020-11-16
基金项目： 山东省重点研发计划项目(2017GSF2004).
作者简介： 王静(1995—),女,硕士研究生.*通信联系人.
