The heat conduction model and leakage characterization of the sealing interface

Wang, Shen; Yao, Xiaoling; Yang, Hong-Ao

doi:10.1016/j.ijthermalsci.2019.106027

Cited by 6 publications

(3 citation statements)

References 25 publications

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“…Due to the obvious heat conduction in the high-temperature gas leakage problem, infrared thermography technology has been widely used in tests for gas leakage [11]. Scholars used the dimension method [12], and heat conduction model [13] to establish the test method of leakage positioning and leakage rate measurement based on the temperature field and temperature gradient field, which was furtherly extended to the leakage test of the sealing interface [14]. But current application of infrared thermography technology on the leakage test is limited by the resolution of the infrared thermal imager.…”

Section: Leakage Test Methodsmentioning

confidence: 99%

“…But current application of infrared thermography technology on the leakage test is limited by the resolution of the infrared thermal imager. The calculation area of the temperature image in references [12][13][14] is generally less than 2000 pixels, so that the leakage hole occupies only tens of pixels, and the leakage interface width is only a few pixels, which greatly affects the accuracy and sensitivity of the leakage location and leakage rate measurement. Therefore, improving the resolution of the infrared images is the key to further application of infrared thermography technology on multiple-hole leakage and interface leakage testing.…”

Section: Leakage Test Methodsmentioning

confidence: 99%

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Leakage characteristics of a sealing structure with damage holes based on super-resolution infrared thermography technology

Wang¹,

Yao²,

Gw³

2020

Meas. Sci. Technol.

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In this paper, leakage characteristics of a sealing structure with damage holes are measured, combining super-resolution algorithms with infrared thermography technology. First, leakage tests of a sealing structure with a single-hole and double-hole are conducted, and some original infrared images are operated to locate the leakage position and calculate the leakage rate. Second, different types of super-resolution algorithms are introduced to generate different high-resolution (HR) infrared images. Finally, the results of the leakage location and leakage rate measured by different HR infrared images of different super-resolution algorithms are compared and discussed, revealing that the machine learning algorithm has the best overall performance. The super-resolution algorithm reduces the measurement error of the leakage rate by 40% and improves the sensitivity of the positioning test by five to ten times. The result indicates that super-resolution infrared thermography is of significant help in ensuring the accuracy of the multiple-hole leakage test.

show abstract

Section: Leakage Test Methodsmentioning

confidence: 99%

Section: Leakage Test Methodsmentioning

confidence: 99%

Leakage characteristics of a sealing structure with damage holes based on super-resolution infrared thermography technology

Wang¹,

Yao²,

Gw³

2020

Meas. Sci. Technol.

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show abstract

“…Lutkiewicz et al [14] proposed a method for evaluating the effectiveness of bolted joint seals based on leakage rate calculation, which took the contact stress graphs, material characteristics, and surface roughness as input and obtained the leakage rate evaluation value. Wang et al [15] proposed a new method for detecting leakage location and measuring leakage rate based on temperature field and temperature gradient field and verified the feasibility of the method by experiments. Li et al [16] established the G-L Reynolds equation based on equivalent density and viscosity of the gas-liquid fluid, and the theoretical results are verified by the experiment.…”

Section: Introductionmentioning

confidence: 96%

Analysis of Sealing and Leakage Performance of the Subsea Collet Connector with Lens-Type Sealing Structure

Yun

Wang

Yan

et al. 2020

JMSE

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The contact mechanics model of the metal lens-type sealing gasket is established on the basis of Hertz theory on the macroscopical scale in this paper. The relationship among sealing width, contact pressure, and preload is solved. Based on the structural characteristics of the subsea collet connector, the self-locking characteristics are analyzed to determine the gain coefficient of the sealing structure for the loading thrust. On the microscopic scale, the contact characteristics of the turning lens-type sealing gasket and the hub structure are analyzed by the equivalent replacement of the peak cut coefficient of the one-dimensional sinusoidal wave. The influence of different leakage forms on sealing performance is discussed from both radial and circumferential leakage, and the leakage rate of the lens-type sealing structure is calculated. The hydrostatic pressure experiment of the subsea collet connector with lens-type sealing gasket is carried out, and the correctness of the theoretical analysis is verified from the results of the pressure maintaining, sealing width measurement, and preload conversion.

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Constitutive relationship of fabric rubber composites and its application

Wang

Yan

et al. 2023

Composite Structures

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The heat conduction model and leakage characterization of the sealing interface

Cited by 6 publications

References 25 publications

Leakage characteristics of a sealing structure with damage holes based on super-resolution infrared thermography technology

Leakage characteristics of a sealing structure with damage holes based on super-resolution infrared thermography technology

Analysis of Sealing and Leakage Performance of the Subsea Collet Connector with Lens-Type Sealing Structure

Constitutive relationship of fabric rubber composites and its application

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