A new approach for optimal design of eddy current testing probes
A new approach for optimal design of eddy current testing probes
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DOI：
10.1007/bf02446114
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发表时间：
1998-09-01
影响因子：
2.8
通讯作者：
Miya, K
中科院分区：
文献类型：
--
作者：
Chen, ZM;Miya, K
本文研究了用于核电站蒸汽发生器管子先进无损检测的ECT探头的优化设计。基于简化的可探测性分析方法和新提出的环电流模型，提出了一种新的探头设计方法。新方法被应用于拾音器布置和相应的励磁线圈的优化中。最后提出了两种可能在实际应用中表现出高性能的潜在ECT探头的设计方案。此外，通过比较本文方法和有限元-边界元混合程序计算的裂纹引起的磁场扰动和S/N比，进一步验证了环电流模型和简化的可探测性分析方法对于导电管的有效性。从而保证了新设计方法的有效性和新探头设计的高性能。
The optimal design of ECT probes for advanced nondestructive inspection of steam generator tubing in nuclear power plants is studied in this paper. A new approach for probe design is proposed, on basis of both a simplified detectability analysis method and a ring current model newly developed by the authors. The new approach is incorporated in the optimization of pick-up arrangements as well as the corresponding excitation coils. Two designs of a potential ECT probe which may show high performance in practical applications are proposed finally. In addition, the ring current model and the simplified detectability analysis method are validated further for a conducting tube by comparing the magnetic field perturbation due to a crack and the S/N ratios evaluated by the present method and an FEM-BEM hybrid code respectively. Consequently, the validity of the new design approach and the high performance of the new probe designs are assured.