Research Papers

Optimal Design Accounting for Reliability, Maintenance, and Warranty

[+] Author and Article Information
Zhonglai Wang

School of Mechtronics Engineering, University of Electronic Science and Technology of China, Chngdu, Sichuan, 611721, P.R. Chinawzhonglai@uestc.edu.cn

Hong-Zhong Huang

School of Mechtronics Engineering, University of Electronic Science and Technology of China, Chngdu, Sichuan, 611721, P.R. Chinahzhuang@uestc.edu.cn

Xiaoping Du1

Department of Mechanical and Aerospace Engineering, Missouri University of Science and Technology, 400 West 13th Street, Rolla, MO 65409-4494dux@mst.edu


Corresponding author.

J. Mech. Des 132(1), 011007 (Dec 30, 2009) (8 pages) doi:10.1115/1.4000638 History: Received October 23, 2008; Revised November 10, 2009; Published December 30, 2009; Online December 30, 2009

Reliability-based design (RBD) ensures high reliability with a reduced cost. Most of the RBD methodologies do not account for maintenance and warranty actions. As a result, the RBD result may not be truly optimal in terms of lifecycle reliability. This work attempts to integrate reliability, maintenance, and warranty during RBD. Three RBD models are built. The total cost of production, maintenance, and warranty are minimized. The computational procedures for solving the RBD models are developed. As demonstrated by two examples, the proposed RBD models meet not only the initial reliability requirement but also the maintenance and warranty requirements with reduced costs.

Copyright © 2010 by American Society of Mechanical Engineers
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Figure 1

The reliability curves for RBD models II and III

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Figure 2

Two types of maintenance during postwarranty period

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Figure 3

Triple-loop procedure for RBD Models I, II, and III

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Figure 4

The pressure tank

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Figure 5

Reliability function R(t)

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Figure 6

A single helical gear reducer

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Figure 7

R(t) when pI=1 and α=0.7




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