Formability of lightweight materials-A Review

Abstract

Abstract Aerospace entirebody and fuse lagewings are made of sheetmetal forming which converts flat sheet without fracture and excessive thinning. Formability test is used to access major failures such as splitting, wrinkling and distortedshapes. Most of the formabilitytests such as Hydraulic Bulgetest, Marciniak In-Plane Sheet torsiontest, and Miyauch is heartests in dicatein formation about material properties. Sheet forming technology has emerged as the most advanced technique due to its capability of producing lightest structural parts that have been widely used in the automotiveindustry. Remarkable advantages such as low tooling cost, flexibility and ease of operation, low toolwear, better surface quality and capability to form complex shapes made sheet forming as most adaptable test for material properties. Many materials such as low carbon steel, copper, magnesium and aluminum alloys can be used in forming process. Predicting the input parameters which affect the product quality is an important issue in many industrial manufacturing processes. Most of the forming processes are enhanced by optimal process parameters such as blank holder force, cavity pressure, punchforceand temperature. In the present paper, major experimental worksr eported in the literature about the effect of process parameters indifferent forming processes on drawing ratio and thickness reduction of formed part by many researchers have been reviewed.