Investigation on Thermal Contact Conductance Based on Data Analysis Method of＇ Reliability

• Published in: Chinese journal of aeronautics Vol. 25; no. 5; pp. 791 - 795
• Main Authors: WANG, Zongren, YANG, Jun, YANG, Mingyuan, ZHANG, Weifang
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.10.2012
• Subjects: aero-engine; compensation heater; Confidence intervals; confidence level; Data processing; Design engineering; GH4169; Heat transfer; Heating equipment; Regression; reliability; Structural materials; TCC; Thermal conductivity; thermal contact conductance; thermal contact resistance; 可靠性; 接触热导率; 数据分析方法; 界面压力; 结构材料; 统计回归模型; confidence level; thermal contact resistance; aero-engine; thermal contact conductance; reliability; compensation heater
• ISSN: 1000-9361
• DOI: 10.1016/S1000-9361(11)60446-9

The method of reliability is proposed for the investigation of thermal contact conductance （TCC） in this study. A new defini- tion is introduced, namely reliability thermal contact conductance （RTCC）, which is defined as the TCC value that meets the reliability design requirement of the structural materials under consideration. An experimental apparatus with the compensation heater to test the TCC is introduced here. A practical engineering example is utilized to demonstrate the applicability of the pro- posed approach. By using a statistical regression model along with experimental data obtained from the interfaces of the struc- tural materials GH4169 and K417 used in aero-engine, the estimate values and the confidence level of TCC and RTCC values are studied and compared. The results show that the testing values of TCC increase with interface pressure and the proposed RTCC model matches the test results better at high interface pressure.