摘要
实际脉冲涡流检测结果受多方面因素的影响,利用标准渗透深度来评估实际脉冲涡流有效渗透深度可能会产生严重的偏差,进而影响深层缺陷的检出率。对奥氏体不锈钢板开展了脉冲涡流标准渗透深度的理论计算与有效渗透深度的试验测定,将计算结果与试验结果进行对比后发现试验测定值远小于理论计算值,分析了上述偏差产生的原因,为实际脉冲涡流检测中的参数优化与数据分析提供参考。
Standard penetration depth is influenced by various factors,and the effective detection depth evaluated based on standard penetration depth may greatly deviate from the actual one,thus influencing the detection of deep defects.In this paper,the effective penetration depth was theoretically calculated and measured by experiments;and the comparison reveals that the measured value is much smaller than the estimated one.The causes of such deviation were analyzed to provide a reference for detection parameters optimization and data analysis in practical testing.
作者
陈卫林
张旻
李骥
CHEN Weilin;ZHANG Min;LI Ji(Nuclear Power Institute of China,Chengdu 610213,China)
出处
《无损检测》
2020年第1期10-12,30,共4页
Nondestructive Testing
基金
国家科技重大专项资助项目(2016ZX06004003).
关键词
脉冲涡流
渗透深度
计算与测定
偏差分析
pulsed eddy current
penetration depth
calculation and measurement
deviation analysis
