Crack characterisation using invariable feature extraction in stainless steel specimen used for absorber tubes of CSP applications via EMAT
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- 作者：Liang Chenga ; bic@brunel.ac.uk" class="auth_mail" title="E-mail the corresponding author ; liangcheng85@gmail.com" class="auth_mail" title="E-mail the corresponding author ; Maria Kogiaa ; Abbas Mohimia ; b ; Vassilios Kappatosa ; Cem Selcuka ; Tat-Hean Gana ; b ; Tat-Hean.Gan@brunel.ac.uk" class="auth_mail" title="E-mail the corresponding author
- 关键词：Electromagnetic acoustic transducer ; Stainless steel ; Crack ; Non-destructive testing and evaluation ; Invariable feature
- 刊名：Renewable Energy
- 出版年：2017
- 出版时间：February 2017
- 年：2017
- 卷：101
- 期：Complete
- 页码：771-781
- 全文大小：1859 K
文摘
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Crack characterisation of absorber tubes in CSP plants using EMATs is developed.
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An feature invariable to factors e.g. electromagnetic coupling, lift-off is found.
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The feature Ac2/Ae1 has linear relationship with the depth of the crack.
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The invariable feature requires no calibration of EMAT system for various tubes.