Design Improvement Of A Household Appliance Using DFMA

Siti Rahmah, Mohd Alias (2008) Design Improvement Of A Household Appliance Using DFMA. Project Report. UTeM, Melaka Malaysia. (Submitted)

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Abstract

This project presents about design improvement using DFMA methodology. In order to fulfill the project requirements, two (2) tools are being uses which are Quality Function Deployment (QFD) and Design for Assembly (DFMA) analysis. As for this project, an ironing board is selected as a product that to be improve and the improvement is by prioritizing the customers' desires. The process of identifying customer requirement involves of constructing a questionnaire where the feedback is regards to the voice of customers. After that, House of Quality (HOQ) is developed in order to identifY the important of the requirement and needs. Base on the HOQ, two (2) design idea and concept is created which are design A and design B. The selection between these two design ideas is distinguished by using Design Evaluation method where morphological chart will be developed in order to do that. The selection keys in the morphological chart are base on the design performance, perceptional quality, reliability and etc. as were state in dimensional of quality. Through this selection method, design B is chosen to be analyzed by using DFA analysis. Boothroyd Dewhurst method is selected as for the analysis. In the analysis,two things are considered which are the manual handling and the manual insertion process in order to gain the insertion and handling time and to calculate the design efficiency of the product. Product is redesign and the design efficiency of the redesign is 26.5% compare to before the redesign 19.3%. At the end of the project, Finite Element Analysis (FEA) analysis is conducted in order to analyze the durability and reliability of each part in the products. The design is analyze using Cosmos Express.

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