It is still a big challenge to calculate the probability of defect detection for inspecting pits on austenitic stainless steel welding using traditional POD models. Because we determine 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. This study proposes a new probability of detection (POD) model to quantitatively assess the detection capability of eddy current probes for inspecting pits on austenitic stainless steel welding. The experimental results show that the proposed model is more reasonable than traditional ones. The novel POD model was employed to analyze three eddy current probes, uniform, TR, plus-point probes on austenitic stainless steel welding. The results reveal that the uniform eddy current probe has the best detection capability for inspecting pits on among the three probes.

中文翻译：

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具有随机决策阈值的奥氏体不锈钢焊缝探伤涡流探头的检测能力评估

使用传统的POD模型来计算缺陷检测概率以检查奥氏体不锈钢焊缝上的焊缝仍然是一个很大的挑战。由于我们确定决策阈值，因此POD曲线随决策阈值的变化而变化很大，因此没有明确的理由来坚持哪个阈值是合理的。这项研究提出了一种新的检测概率（POD）模型，以定量评估用于检查奥氏体不锈钢焊接点蚀的涡流探头的检测能力。实验结果表明，该模型比传统模型更合理。新型的POD模型用于分析奥氏体不锈钢焊接中的三个涡流探头，均匀，TR和正点探头。