Evaluation of fatigue life reliability of steering knuckle using pearson parametric distribution model

Engku Mohamed, Engku Ahmad Azrulhisham and Yusuff, Mohd Asri and Abd Wahab, Dzuraidah and Nik Abdullah, Nik Mohamad Amin and Abdullah, Shahrum and Che Haron, Che Hassan (2010) Evaluation of fatigue life reliability of steering knuckle using pearson parametric distribution model. International Journal of Quality, Statistics, and Reliability, 2010. pp. 1-8. ISSN 1687-7152

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Steering module is a part of automotive suspension system which provides a means for an accurate vehicle placement and stability control. Components such as steering knuckle are subjected to fatigue failures due to cyclic loads arising from various driving conditions. This paper intends to give a description of a method used in the fatigue life reliability evaluation of the knuckle used in a passenger car steering system. An accurate representation of Belgian pave service loads in terms of response-time history signal was obtained from accredited test track using road load data acquisition. The acquired service load data was replicated on durability test rig and the SN method was used to estimate the fatigue life. A Pearson system was developed to evaluate the predicted fatigue life reliability by considering the variations in material properties. Considering random loads experiences by the steering knuckle, it is found that shortest life appears to be in the vertical load direction with the lowest fatigue life reliability between 14000–16000 cycles. Taking into account the inconsistency of the material properties, the proposed method is capable of providing the probability of failure of mass-produced parts.

Item Type: Article
Uncontrolled Keywords: Automobiles, Springs and suspension, Design and construction, Automotive suspension system, Fatigue life reliability
Subjects: T Technology > T Technology (General)
T Technology > TL Motor vehicles. Aeronautics. Astronautics
Divisions: Faculty of Mechanical Engineering
Depositing User: Ahmad Abu Bakar
Date Deposited: 28 May 2013 05:04
Last Modified: 16 May 2023 12:05
URI: http://eprints.utem.edu.my/id/eprint/8026
Statistic Details: View Download Statistic

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