Accession Number : ADA102848


Title :   Internal Shear Forging Processes for Missile Primary Structures.


Descriptive Note : Final rept. 27 Sep 78-31 Mar 81,


Corporate Author : IIT RESEARCH INST CHICAGO IL


Personal Author(s) : Rajagopal,S ; Kalpakjian,S


Full Text : http://www.dtic.mil/get-tr-doc/pdf?AD=ADA102848


Report Date : 20 Jul 1981


Pagination or Media Count : 120


Abstract : Technology was established for combining thermomechanical treatment (TMT) with internal shear forging in the manufacture of 2014 aluminum alloy subshells with integral internal ribs. These structures are currently fabricated from 2014-T6 sheet and plate stock by welding together the cylindrical outer skin of the subshell and a series of internal stiffening rings. The objective of the project was twofold: to enhance the properties and performance of these structures by means of TMT and to achieve cost reductions over the current (fabricated) parts as a result of single-piece construction and near net shape processing.


Descriptors :   *SHEAR PROPERTIES , *ALUMINUM ALLOYS , *RINGS , THERMOMECHANICS , MECHANICAL PROPERTIES , ECONOMIC ANALYSIS , FATIGUE LIFE , STRUCTURAL ANALYSIS , TENSILE PROPERTIES , TEST METHODS , FORGING , COSTS , CRACK PROPAGATION , CORROSION RESISTANCE , INTERNAL , RESIDUAL STRESS , FATIGUE(MECHANICS) , PHOTOMICROGRAPHY , COLD WORKING


Subject Categories : Properties of Metals and Alloys
      Mechanics


Distribution Statement : APPROVED FOR PUBLIC RELEASE