Fault Tree Analysis: A Case Study from Machine Tool Industry

5 Pages Posted: 6 May 2019

See all articles by Rajkumar B. Patil

Rajkumar B. Patil

Department of Mechanical Engineering, Annasaheb Dange College of Engineering and Technology, Ashta, Sangli, 416301, India

Digvijay A. Mhamane

Department of Mechanical Engineering, Annasaheb Dange College of Engineering and Technology, Ashta, Sangli, 416301, India

Pruthwiraj B Kothavale

Department of Mechanical Engineering, MAEER’s MIT College of Engineering, Kothrud, Pune, 411038, India

Basavraj Kothavale

Dept. of Mechanical Engineering MIT Collge of Engineering, Pune 411038

Date Written: December 13, 2018

Abstract

Today, the CNC turning center becomes an important machine tool for manufacturing industry worldwide. However, as the breakdown of a single CNC turning center may result in the production of an entire plant being halted. For this reason, operations and preventive maintenance have to be minimized to ensure availability of the system. Indeed, improving the availability of the CNC turning center as a whole, objectively leads to a substantial reduction in production loss, operating, maintenance and support cost. In this paper, fault tree analysis (FTA) method is used for reliability analysis of CNC turning center. The major faults associated with the system and the causes for the faults are presented graphically. Boolean algebra is used for evaluating fault tree (FT) diagram and for deriving governing reliability model for CNC turning center. Failure data over a period of six years has been collected and used for evaluating the model. Qualitative and quantitative analysis is also carried out to identify critical sub-systems and components of CNC turning center. It is found that, at the end of warranty period (one year), the reliability of the CNC turning center as a whole is around 0.61628.

Keywords: CNC Turning Center; Fault Tree (FT); Fault Tree Analysis (FTA); Boolean Algebra, Reliability, Availability

Suggested Citation

Patil, Rajkumar B. and Mhamane, Digvijay A. and Kothavale, Pruthwiraj B and Kothavale, Basavraj, Fault Tree Analysis: A Case Study from Machine Tool Industry (December 13, 2018). Proceedings of TRIBOINDIA-2018 An International Conference on Tribology, Available at SSRN: https://ssrn.com/abstract=3382241 or http://dx.doi.org/10.2139/ssrn.3382241

Rajkumar B. Patil (Contact Author)

Department of Mechanical Engineering, Annasaheb Dange College of Engineering and Technology, Ashta, Sangli, 416301, India ( email )

Ashta, Sangli, 416301,
India

Digvijay A. Mhamane

Department of Mechanical Engineering, Annasaheb Dange College of Engineering and Technology, Ashta, Sangli, 416301, India ( email )

Ashta, Sangli, 416301,
India

Pruthwiraj B Kothavale

Department of Mechanical Engineering, MAEER’s MIT College of Engineering, Kothrud, Pune, 411038, India ( email )

Kothrud, Pune, 411038
India

Basavraj Kothavale

Dept. of Mechanical Engineering MIT Collge of Engineering, Pune 411038 ( email )

Pune, 400084
India

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