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Accounting for manufacturability considerations at the product design stage is not only important but earlier they are considered in the design cycle, better it is. When computers are used extensively for design and manufacturing, automated manufacturability evaluation is a powerful option. This paper presents a review on automated manufacturability evaluation of sheet metal parts. While a large number of technical papers including reviews have been published on the general subject of Design For Manufactuarability (DFM), there is no paper in the literature that provides a review of automated manufacturability evaluation of sheet metal parts. In this work existing automated manufacturability evaluation systems for sheet metal parts are reviewed. The product, process and resource information models together with integration issues for automated manufacturability evaluation are discussed. Some of the future research challenges in this area are presented at the end.

Automated manufacturability evaluation of a given design is a key requirement in realizing complete integration of design and process planning. It would still be better to control the designing process itself with manufacturability information. The purpose of such an evaluation is to assist designers in their effort to come up with manufacturable parts economizing in terms of cost and time, without compromising on quality and functional requirements. The present work deals with one such system developed for manufacturability evaluation of sheet metal components. Unlike most of the work done in the sheet metal area in the past, which concentrates on specific domain or phase of manufacturability evaluation, the present work is more comprehensive combining characteristics of all the existing methods and phases of manufacturability evaluation. The prime components of the present system are design evaluation and process plan generation. Design evaluator and process planner use different types of data and knowledge to identify design and process planning violations which are overcome by suggesting design changes. A process planner also uses manufacturing resource and process information to arrive at manufacturable parts by generating feasible process plans. Results of manufacturability evaluation are presented for typical sheet metal parts to be produced by bending and shearing (blanking and piercing) processes.

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The current research analyzed unsteady viscous dissipation, comprehensive radiation absorption consequence on hydrodynamic free-convective movement on perpendicular porous plate beyond chemical reaction and heat generation. Doufour effect is also introduced to solve utilizing multiple perturbation law momentum, heat and mass fields of outcome are inspected through pertinent parameters. Doufour consequence and comprehensive thermal radiation enhances it tends to enhance in duel temperature. Skinfriction, Nusselt number is diminished when enhancing Prandtl number. Skinfriction, Sherwood number and Nusselt number are examined.