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Mathematical Problems in Engineering
Volume 2018 (2018), Article ID 1952674, 11 pages
Research Article

An Evaluation Method for Brittle Source of the Key Procedure in Complex Parts’ Manufacturing

1College of Mechanical and Electrical Engineering, Shaanxi University of Science and Technology, Xi’an, Shaanxi 710021, China
2The Key Laboratory of Contemporary Design and Integrated Manufacturing Technology of Ministry of Education, Northwestern Polytechnical University, Xi’an, Shaanxi 710072, China
3School of Mechatronic Engineering, Xi’an Technological University, Xi’an, Shaanxi 710021, China

Correspondence should be addressed to Hu Qiao

Received 14 August 2017; Revised 21 December 2017; Accepted 25 December 2017; Published 28 January 2018

Academic Editor: Ivan Giorgio

Copyright © 2018 Ying Xiang 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.


A method is proposed to analyze and evaluate brittle source of the key procedure in increasing the stability during complex parts’ manufacturing. Based on the concept of machining cell, brittleness risk is introduced into the stability analysis of manufacturing process; the key procedure in manufacturing process is obtained by analyzing and calculating the brittleness risk entropy of each machining cell. Moreover, brittleness factors of the key process are analyzed to obtain a human-machine-environment brittleness model from man-machine-environment. The improved fuzzy analytic hierarchy process (FAHP) is used to analyze the relationship between the brittleness factor and the brittleness event, and a quantification method of the brittle factor in the key process is given. Thus, dangerous brittle sources in key procedure as well as abnormal control points for anomalies can be identified to improve the stability of complex parts’ manufacturing processes. Finally, the correctness and effectiveness of this method are verified by using the manufacturing process of an aeroengine blade.