A Study on Fatigue Wear Improvement of High Pressure Seal for Tracked Vehicle Suspension

Lee, Yongjun; Kim, Hyeonghyeon; Kim, Kyungro; Koo, Yungseo

doi:2017.20.1.12

J. KIMS Technol > Volume 20(1); 2017 > Article

Journal of the Korea Institute of Military Science and Technology 2017;20(1):12-17.
DOI: https://doi.org/10.9766/KIMST.2017.20.1.012

A Study on Fatigue Wear Improvement of High Pressure Seal for Tracked Vehicle Suspension

Yongjun Lee, Hyeonghyeon Kim, Kyungro Kim, Yungseo Koo

Changwon Center, Defense Agency for Technology and Quality

궤도차량 현수장치 고압용 시일의 피로마모 개선 연구

이용준, 김형현, 김경로, 구융서

국방기술품질원 기동화력센터

Abstract

In this paper, causes of wear on high pressure seals for suspension are analyzed, and the result of reproduction test and verification on improved design are described. First, by performing the observation of worn surfaces and its failure analysis, the primary cause of wear on the seals are analyzed. The result of analysis shows that the main failure mechanism of wear is a fatigue wear, and test criteria for failure reproduction are set up with consideration for frequency condition, surface roughness and pressure. Durability comparison test on the condition of low amplitude and high frequency is carried out. And, it is found that the durability of wear on seals by increasing hardness of cylinder and managing for surface roughness is enhanced.

Key Words: Fatigue Wear, High Pressure Seal, Tracked Vehicle Suspension