Implementation of design for manufacture and assembly (DFMA) and analytical hierarchy process (AHP) in optimizing conceptual design of hand tool trolley

Jiga, Iviana (2015) Implementation of design for manufacture and assembly (DFMA) and analytical hierarchy process (AHP) in optimizing conceptual design of hand tool trolley. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Nowadays, in the era of competitive manufacturing demands organizations around the world are facing a great challenge in producing a high-quality product at the economical market price in the shortest time to be manufactured and sell to the customers. Due to that issue, researcher and innovators have to amplify their focus to simplify and increase efficiency of the operation in manufacturing and assembly process and cost. The main objectives of this project is to optimize the conceptual design of hand tool trolley by using the DFMA and AHP approach. The original design of hand tool trolley was analyzed by using DFMA software to obtain the suggestion for redesign parts. Next, three new conceptual designs were proposed by eliminating, modified or redesign parts in the original design hand tool trolley. Then, the best conceptual design is selected based on the criteria in AHP analysis. The DFMA method have proved that the original hand tool trolley has been improved by 63% of design efficiency which is reducing the total number of parts from 127 parts to 22 parts in the new design of hand tool trolley. The weight of the new design of hand tool trolley is 20.12g which is less than 225N or 22.5kg have achieved the problem statement of this project. The assembly time reduce form 1410.43s to 838.85s for the new design. Finally, the cost of the product is reduced by 69.43% which is from RM357.02 for the old design to RM109.13.

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