Product upgrade, achieved through the improvement of the functionality of reused or remanufactured products, is often accepted as an effective way to attain a competitive service life extension (SLE). The upgradability of a product is characterised as its ease-of - upgrade virtue. Whether a product can be soundly and easily reutilised and upgraded is strongly influenced by the configurations of its essential characteristics which are determined during the design stages. Design for Upgradability (DFU) is a tool that primarily focuses on enhancing a product's functional, as well as, physical fitness for ease-of-upgrade and reutilisation. / Thesis (PhD)--University of South Australia, 2006.

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