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

E. A. Azrulhisham, Y. M. Asri, Dzuraidah Abd. Wahab, N. M. Nik Abdullah, Shahrum Abdullah, Che Hassan Che Haron

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number816407
JournalInternational Journal of Quality, Statistics, and Reliability
Volume2010
DOIs
Publication statusPublished - 2010

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Fatigue of materials
Materials properties
Cyclic loads
Passenger cars
Loads (forces)
Data acquisition
Durability

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality

Cite this

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title = "Evaluation of fatigue life reliability of steering knuckle using pearson parametric distribution model",
abstract = "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.",
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AU - Azrulhisham, E. A.

AU - Asri, Y. M.

AU - Abd. Wahab, Dzuraidah

AU - Nik Abdullah, N. M.

AU - Abdullah, Shahrum

AU - Che Haron, Che Hassan

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