Inspection on SIC coated carbon-carbon composite with subsurface defects using pulsed thermography

被引：14
|
作者：
Tang Qingju [1 ,2 ]
Liu Junyan [1 ]
Wang Yang [1 ]
Qi Litao [2 ]
Qin Lei [1 ]
机构：
[1] Harbin Inst Technol, Sch Mechatron Engn, Harbin 150001, Peoples R China
[2] Hei Longjiang Inst Sci & Technol, Sch Mech Engn, Harbin 150022, Peoples R China
来源：
INFRARED PHYSICS & TECHNOLOGY | 2013年 / 60卷
关键词：
Pulsed thermography; Carbon-carbon composite; Defects; Infrared camera; INFRARED THERMOGRAPHY; C/C COMPOSITES;
D O I：
10.1016/j.infrared.2013.05.004
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
An investigation on SIC coated carbon-carbon (C/C) composite plates has been undertaken by pulsed thermography. The heat transfer model has been built and the finite element method (FEM) is applied to solve the thermal model. The simulation results show that defects with DA/DP smaller than one can hardly be detected by an infrared camera with the sensitivity of 0.02 degrees C. Certificated experiments were performed on the built pulsed thermography system. The thermal wave signals have been processed by subtracting background image method (SBIM), pulsed phase thermography (PPT), and temperature-time logarithm fitting method (TtLFM). The limit DA/DP of defects in SiC coated C/C composite plates with the thickness of 6 mm that can be detected by pulsed thermography with the presented signal analysis algorithms has been obtained. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：183 / 189
页数：7
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