Concepts and verification model for pressure triggered one-to-many disassembly fasteners

It is explained how ‘one-to-many’ fasteners can contribute to achieve cost-efficient disassembly. These fasteners use advanced materials or structures as a catalyst for disassembly, allowing multiple assemblies to separate simultaneously after exposure to specific, external triggering conditions. In this paper the emerging techniques in this area are sketched and evaluated, according to their generic applicability and the degree of imbedded automation of the triggerable disassembly activity. In the remainder of this paper, a systematic development strategy for structure-based one-to-many disassembly concepts is presented using topology optimisation. Illustrated with pressure-based fastener configurations, examples are given of how one-to-many fasteners could look like and how they can be implemented in products.