TRANSIENT THERMOGRAPHY TESTING OF UNPAINTED THERMAL BARRIER COATING SURFACES

被引：1

作者：

Ptaszek, Grzegorz ^{[1
]}

Cawley, Peter ^{[1
]}

Almond, Darryl ^{[2
]}

Pickering, Simon ^{[2
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, UK Res Ctr NDE, London SW7 2AZ, England

[2] Univ Bath, UK Res Ctr NDE, Bath, Avon, England

来源：

REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLS 32A AND 32B | 2013年 / 1511卷

基金：

英国工程与自然科学研究理事会;

关键词：

Thermography; Thermal Response; Thermal Contrast; IR Camera; TBC; Thermal Barrier Coating; Disbond; Emissivity;

D O I：

10.1063/1.4789098

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This paper has investigated the effects of uneven surface discolouration of a thermal barrier coating (TBC) and of its IR translucency on the thermal responses observed by using mid and long wavelength IR cameras. It has been shown that unpainted blades can be tested satisfactorily by using a more powerful flash heating system and a long wavelength IR camera. The problem of uneven surface emissivity can be overcome by applying 2nd derivative processing of the log-log surface cooling curves.

引用

页码：571 / 578

页数：8

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