Abstract

Active disassembly is an emerging field in the research of design for disassembly, that enables a cost effective and nondestructive separation of product components. It enables the self-disassembly of products without any direct contact between the product and the operator through using active joints and fasteners, that were inserted in the product throughout its design and manufacturing phases. Active disassembly is based on using smart materials such as shape memory alloy actuators to generate the necessary disassembly forces to complete the disassembly process. Most of the exerted effort in this field was focused on products requiring small disassembly forces either in the electronic or automotive sectors. All these active disassembly applications were based on using shape memory alloy snap fits, clips or wires that are characterized by their ability to generate small forces with large displacements. As, up to the authors knowledge none of the exerted efforts were concerned with applying active disassembly in products requiring large disassembly forces or have large structures. Consequently, the presented research aimed to examine the probability of applying active disassembly with products requiring large disassembly forces, having tapered surfaces and large mechanical structure. Thus, two case studies were presented to validate the probability of using active disassembly with large force applications. In addition, the presented case studies investigated the capability of using shape memory alloy actuators having either a concentric or eccentric assembly with the product structure.

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