A new leakage measurement method for damaged seal material

作者：Wang, Shen; Yao, Xue Feng^*; Yang, Heng; Yuan, Li; Dong, Yi Feng

来源：Measurement Science and Technology, 2018, 29(7): 075203.

DOI：10.1088/1361-6501/aac15f

• leakage rate
• infrared thermography
• arbitrary damage shape
• temperature gradient field
• damaged rubber seal

In this paper, a new leakage measurement method based on the temperature field and temperature gradient field is proposed for detecting the leakage location and measuring the leakage rate in damaged seal material. First, a heat transfer leakage model is established, which can calculate the leakage rate based on the temperature gradient field near the damaged zone. Second, a finite element model of an infinite plate with a damaged zone is built to calculate the leakage rate, which fits the simulated leakage rate well. Finally, specimens in a tubular rubber seal with different damage shapes are used to conduct the leakage experiment, validating the correctness of this new measurement principle for the leakage rate and the leakage position. The results indicate the feasibility of the leakage measurement method for damaged seal material based on the temperature gradient field from infrared thermography.

• 出版日期2018-7
• 单位清华大学