Metallic mating surfaces in machine joints offer an excellent source of energy dissipation, resulting in damped dynamic structural response, for example in machine tools. This paper describes the results of a series of experiments where the energy loss per cycle occurring at preloaded flat metallic interfaces subjected to cyclic tangential forces are measured. The effects of certain pertinent joint variables on the joint damping effectiveness are investigated. The results should be useful to the designers of machine tool structures, where damping occurring in joints is important.
ConclusionsOver-spending for maintenance to achieve higher and higher plant availability should be judiciously analysed for economic feasibility before taking any major decision on maintenance budget formation. The techniques and ideas given in this article will be useful for maintenance managers and engineers when designing their annual plant maintenance planning for the required levels of plant availability and net income.
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