Development of the evaluation system for automobile remanufacturing

By 2015, the EU directives required the automobile manufacturers to produce a vehicle that contains reusable and / or recoverable parts at least 95% of total weight. In the developed countries, the legislative issue the take – back policy which requires the manufacturers to consider the end – of – life (EOL) of their products at early design stage. The goal of this paper is to propose a framework of development methodology that focuses on integrated design for remanufacturing evaluation system. This system supports the automobile product design and development at the early design phase. The proposed method is divided into two phases. The first phase aims to identify the suitable EOL process. The second phase aims to verify the most economical EOL process. The proposed method incorporates the Case base Reasoning [CBR] into the remanufacturing techniques. It is expected that the proposed method can provide the EOL with decision support during designing the automobile parts at the early design stage

Development Of Design Evaluation System For Assembly

Pemasangan merupakan satu peringkat yang terpenting dalam pembangunan produk. Rekabentuk untuk pemasangan (DF A) adalah salah satu pendekatan yang utama yang digunakan untuk meningkatkan rekabentuk produk supaya produk yang dihasilkan mudah dipasang, kos pemasangan yang murah disamping nilai produk yang tinggi. Objektif kajian ini adalah untuk membangunkan sistem penilaian rekabentuk untuk pemasangan (DF A). Sistem yang dibangunkan bertujuan menyokong teknik baru dalam DF A dan memberi peluang kepada pengguna untuk menilai dan mengurangkan jumlah kos masa dan pemasangan serta meningkatkan nilai produk pada peringkat awal proses rekabentuk. Sistem ini juga dijangkakan berupaya membantu perekabentuk dalam merekabentuk semula produk dengan menggunakan prinsip dan peraturan DF A. Kaedah Lucas DF A dan Kejuruteraan Nilai (VE) telah dipertimbangkan untuk menghasilkan rangka kerja untuk analisis DF A. Skop kajian termasuklah membangunkan analisis kebolehpasangan sesuatu produk yang sistematik dengan menggunakan aktiviti asas rekabentuk yang berturutan. Assembly is one of the most important stages of product development. Design for Assembly (DF A) is one of the approaches to improve the product designs for easier and less assembly cost with high functionality of the products. The main objective of the research work is to develop an improved DF A system. The developed system is aimed at supporting new techniques for DF A and to provide users opportunity to assess and reduce the total assembly time and cost of the product and improve the product value at the early stage of the design process. The system is also expected to assist the designer in product redesign based on the general DF A rules and principles. In order to achieve this task, Lucas DF A and Value Engineering are reviewed in the current research work towards developing a framework for DF A analysis. The scope of the work includes systematizing the assemblability analysis for a product through generic sequence of design activities with rational basis

The Development of the Computer Aided Remanufacturing System (CARES) Part I: Software Development (Phase I) and a Simulation Study

The environment bills that passed by the legislators triggered a new dimension towards the manufacturers to consider producing eco – friendly product. This paper presents the developed software of the remanufacturing evaluation system so-called "Computer – Aided Remanufacturing Evaluation System (CARES)". The software is developed by integrating an analytic hierarchy process (AHP) with case based reasoning (AHP – CBR) approach. The result of the simulation study showed that the maximum similarity between the input case and the retrieve case is 80%. The evaluation system recommended that mirror cover, mirror base and mirror holder should be remanufactured

Hydroxyapatite-Based Coating on Biomedical Implant

The use of metallic biomaterials for replacement of biomedical implants has been traced back from the nineteenth century. These metallic biomaterials have been declared as clinical success as their mechanical properties that satisfy the prerequisite of the human bone. Nevertheless, critical issues of the materials when they are utilised as implants; including the releasing toxic and harmful metal ions through wear and corrosion processes after longer implantation. Besides that, the bonding strength between bone and implants itself is considered weak due to the different components of human bone and metal implants. Hence, developing hydroxyapatite (HAp) coating on metallic biomaterials is expected to overcome the problems faced by biocompatible metallic biomaterials. As far as this, various commercial techniques have been introduced to develop the HAp coating on metallic biomaterials. The techniques are including plasma-spraying method, sol-gel dip-coating, electrochemical deposition and high-velocity suspension plasma-spraying. The formation of HAp coating on metallic biomaterials improved the corrosion resistance together promoting its load-bearing ability and enhanced substrate-coating adhesion

Development of intelligent evaluation system for product end-of-life selection strategy

As the world population increases exponentially, the number of products purchased and consumed is also increasing. The rapid pace of technological changes renders some products obsolete even though they are still new and in excellent condition. Consequently, the supply of natural resources decreases severely. Additionally, the amount of waste generated at the end-of-life of products has become a serious problem in most countries. In response, manufacturers have to seek other essential resources to provide materials for manufacturing their products. This generates a strong demand for secondary resources such as refurbished parts and recycled materials. This problem can be best resolved by promoting end-of-life (EOL) selection strategies. The main objective of this research is to develop an evaluation system for selecting EOL strategy specifically for remanufacturing. The developed framework consists of several sub-objectives. The first sub-objective is to evaluate the remanufacturing selection strategy at the product level. In order to achieve this, the integration of analytic hierarchical process (AHP) and case-based reasoning (CBR) is used to evaluate the EOL options at the product level. The AHP, which allows pair-wise comparison and consistent judgement, is used to determine the weight in nearest neighbourhood (NN) algorithm of CBR. The second subobjective is to evaluate the EOL of parts and components. The integration of the economic and environmental cost (EOL cost) model is used to determine the EOL of parts and components. The third sub-objective is to optimize the disassembly sequence of the EOL product. This study integrates the travelling salesman problem with genetic algorithm (TSP-GA) for finding the optimal disassembly sequence and disassembling the EOL product. Additionally, this study uses EOL profits and net present value (NPV) of parts and subassemblies of the EOL product to determine the best EOL option of components and parts of the EOL product

An integrated TSP-GA with EOL cost model for selecting the best EOL option

This paper presents our research works on integrating design for disassembly with cost model for end-of-life (EOL) product. This paper has two objectives. The first objective is to optimize disassembly sequence of the EOL product. We integrate a traveling salesman problem approach with genetic algorithm in finding the optimal disassembly sequence for disassembling the EOL product. Based on this optimal sequence, the second objective is to identify the best EOL option. We employ EOL profits and net present value of parts and subassemblies of the EOL product to determine the best EOL option of components and parts of the EOL product. The predicted results showed that the developed cost model has reached a good correspondence with the established methods