ARTIFICIAL DISBONDS FOR CALIBRATION OF TRANSIENT THERMOGRAPHY INSPECTION OF THERMAL BARRIER COATING SYSTEMS

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, Exhibit Rd, London SW7 2AZ, England
[2] Univ Bath, UK Res Ctr NDE, Bath, Avon, England
来源：
REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLS 31A AND 31B | 2012年 / 1430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; FBH; artificial disbond; thermal barrier coating; delamination; DELAMINATION; EVOLUTION;
D O I：
10.1063/1.4716267
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Transient thermography is commonly used for the detection of disbonds in thermal barrier coatings (TBC). As for other NDT techniques, reference test specimens are required for calibration, but unfortunately, real disbonds are very difficult to use because it is difficult to control their size, and larger ones tend to spall. Flat bottomed holes are commonly used, but these over-estimate the thermal contrast obtained for a defect of a given diameter. This paper quantifies the difference, and proposes an artificial disbond.
引用
收藏
页码：491 / 498
页数：8
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