Accounting For Product End-of-Life Status in Disassembly Time Estimation Using Modified Maynard Operation Sequences

Design for disassembly (DfD) approaches play a vital role in (re)designing products from improving their sustainability and circularity performance. This is particularly true the case of complex resource-intensive wherein material recovery reutilization at end-of-life (EoL) dictated by ease-of-disassembly. Various DfD have been developed increasing valuable materials reducing overall time (DT). However, such methods do not consider actual EoL status product while estimating DT. The lack systematic approach adjusting DT based on (e.g., fully operational product, presence functional failures specific parts, missing parts) prevents current accurately assessing can therefore lead designers towards solutions that reduce performance products. To address this gap, proposed study develops an account during estimation scenarios early design. central idea modifying standardized motion sequences operations potential failure modes product's EoL. was tested real involving electrical kettle. Results show generate new insights regarding In particular, some Failure Modes to reduction due changes action type corresponding scenario (i.e., reuse disposal). cases, be counterproductive circular economy perspective as gains result diminished ability recover/reuse