LAUSR

Abstract This survey proposes an innovative solution of using low frequency oscillations among wide variety of available disassembly methods for disassemble press-fit joints. Two different schemes of unidirectional path applying vibration waves to the elements of fitted joints have been developed with many loads combinations. Experimental research was then carried out with measurement of data to evaluate the efficiency of the methods and also to examine the ongoing process by analyzing mechanical properties of disassembled parts. Despite the fact that the scheme were found suitable for the reduction of disassembly’s pull out forces required for assembled joints comparatively to the use of usual tools, those which combined simultaneous vibration wave processing and disassembly were found more effective in the reduction and stabilization of disassembly efforts with a certain gain of time. In the paper it was found that this improvement is caused by the reduction in friction factor and the plastic deformation effect of the shaft created by vibration waves, allowing certain variation of its diameter during the process; all this favoring disassembly in the moment of diameter reduction. The study of mechanical property of the disassembled parts by the means of vibration waves shows an increase in micro-hardness, in area of contact between parts and an upgraded roughness profile parameter. This contributes to avoid damage of parts during the process, for a sustainable use of resources by product life cycle extension when repairing mechanical product or during utilization as key indicator for sustainability.