An analogy based estimation framework for design rework efforts

Authors:
Panumas Arundacahawat;Rajkumar Roy;Ahmed Al-Ashaab
Affiliations:
Decision Engineering Centre, Cranfield University, Bedford, UK;Decision Engineering Centre, Cranfield University, Bedford, UK;Decision Engineering Centre, Cranfield University, Bedford, UK
Venue:
Journal of Intelligent Manufacturing
Year:
2013

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Abstract

Analogy based estimation framework is developed aiming to estimate design rework efforts which are unnecessary repetition design efforts. Design rework factors were captured from literature reviews and then they were developed to be design rework drivers by mapping with results from semi structure interviews with three companies in automotive industries. There are six design rework drivers for probability occurrence, and there is only one driver for efforts required. Design structure matrix is used to identify interactions and addressed a key critical component or subsystem. The analogy based estimation framework is applied with the water pump development project from an engine manufacturer. The initial statistical validation method called mean magnitude of relative error is implemented and the results are in acceptable range, while experts from company C agreed on the validity of design rework drivers and opportunity to improve the framework. The ultimate goal of this development is to develop a framework to estimate design rework efforts in the product design and development projects at the early stage.