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Mathematical Problems in Engineering
Volume 2015 (2015), Article ID 101068, 9 pages
http://dx.doi.org/10.1155/2015/101068
Research Article

Lifetime Analysis of Rubber Gasket Composed of Methyl Vinyl Silicone Rubber with Low-Temperature Resistance

1School of Mechanical Engineering & IEDT, Kyungpook National University, No. 80 Daehakro, Daegu 702-701, Republic of Korea
2Institute of Engineering Design Technology, Kyungpook National University, No. 80 Daehakro, Daegu 702-701, Republic of Korea
3Graduate School of Mechanical Engineering, Kyungpook National University, No. 80 Daehakro, Daegu 702-701, Republic of Korea

Received 9 April 2015; Accepted 18 May 2015

Academic Editor: Filippo Ubertini

Copyright © 2015 Young-Doo Kwon et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Most machines and instruments constantly require elastomeric materials like rubber for the purposes of shock absorption, noise attenuation, and sealing. The material properties and accurate lifetime prediction of rubber are closely related to the quality of machines, especially their durability and reliability. The properties of rubber-like elastomers are influenced by ambient conditions, such as temperature, environment, and mechanical load. Moreover, the initial properties of rubber gaskets must be sustained under working conditions to satisfy their required function. Because of its technical merits, as well as its low cost, the highly accelerated life test (HALT) is used by many researchers to predict the long-term lifetime of rubber materials. Methyl vinyl silicone rubber (VMQ) has recently been adopted to improve the lifetime of automobile radiator gaskets. A four-parameter method of determining the recovery ability of the gaskets was recently published, and two revised methods of obtaining the recovery were proposed for polyacrylate (ACM) rubber. The recovery rate curves for VMQ were acquired using the successive zooming genetic algorithm (SZGA). The gasket lifetime for the target recovery (60%) of a compressed gasket was computed somewhat differently depending on the selected regression model.