High Temperature Shear Horizontal Electromagnetic Acoustic Transducer for GuidedWave Inspection

被引：46

作者：

Kogia, Maria ^{[1
]}

Gan, Tat-Hean ^{[1
,2
]}

Balachandran, Wamadeva ^{[1
]}

Livadas, Makis ^{[1
]}

Kappatos, Vassilios ^{[1
]}

Szabo, Istvan ^{[1
]}

Mohimi, Abbas ^{[1
,2
]}

Round, Andrew ^{[1
]}

机构：

[1] Brunel Univ, Brunel Innovat Ctr, Cambridge CB21 6AL, England

[2] TWI Ltd, Granta Pk, Cambridge CB21 6AL, England

来源：

SENSORS | 2016年 / 16卷 / 04期

关键词：

Electromagnetic Acoustic Transducers; EMAT; Guided Wave Testing; high temperature inspection; LONG-RANGE INSPECTION; LAMB WAVES; EMAT; GENERATION; EXCITATION; PLATE; ARRAY; COIL;

D O I：

10.3390/s16040582

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Guided Wave Testing (GWT) using novel Electromagnetic Acoustic Transducers (EMATs) is proposed for the inspection of large structures operating at high temperatures. To date, high temperature EMATs have been developed only for thickness measurements and they are not suitable for GWT. A pair of water-cooled EMATs capable of exciting and receiving Shear Horizontal (SH0) waves for GWT with optimal high temperature properties (up to 500 degrees C) has been developed. Thermal and Computational Fluid Dynamic (CFD) simulations of the EMAT design have been performed and experimentally validated. The optimal thermal EMAT design, material selection and operating conditions were calculated. The EMAT was successfully tested regarding its thermal and GWT performance from ambient temperature to 500 degrees C.

引用

页数：16

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