Contents volume 16 (1988)

Journal of Mechanical Working Technology, 16 (1988) 375-376

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Elsevier Science Publishers B.V., Amsterdam - - Printed in The Netherlands

Contents Volume 16 (1988) Vol. 16, No. 1 Editorial .............................................................................................................................................. 1 Obituary .............................................................................................................................................. 3 Elastic-plastic finite-element modelling of a cold-extrusion process using a microcomputerbased system A.A.M. Hussin, P. Hartley, C.E.N. Sturgess and G.W. Rowe (Birmingham, Great Britain) ......................................................................................................................................... 7 Prediction of the barreling of solid cylinders under uniaxial compressive load R. Narayanasamy, R.S.N. Murthy, K. Viswanatham and G.R. Chary (Hyderabad, India) ............................................................................................................................................. 21 Residual stresses in high-strength steel after extrusion E.V. Polyakov, V.V. Davydov and Yu. S. Konjaev (Moscow, USSR) .................................... 31 Precision forging hollow parts in novel dies C. Tuncer and T.A. Dean (Birmingham, Great Britain) ......................................................... 39 Ring-compression tests on sintered iron preforms P. Venugopal, S. Venkatraman, R. Vasudevan and K.A. Padmanabhan (Madras, India) ... 51 A simple way to estimate the level of the residual stresses after laser heating D. Grevey, L. Maiffredy and A.B. Vannes (Villeurbanne, France) ......................................... 65 Plastic torsion of prismatic metal bars - - Mainly in respect of length changes: A review W. Johnson, S. Chandrasekar and C.N. Chu (West Lafayette, IN, U.S.A. ) .......................... 79 Letter to the Editor ............................................................................................................................ 93 Book Reviews ..................................................................................................................................... 95 Diary of Events .................................................................................................................................. 109

Vol. 16, No. 2 Simulation of ring rolling with new wax-based model materials on a flexible experimental machine P. Boucly, J. Oudin and Y. Ravalard (Valenciennes, France) ................................................. 119 Deformation characteristics and fracturing of sintered copper powder strips during cold forging A.K. Jha and S. Kumar (Ranchi, India) ................................................................................... 145 Some failure studies in the Hooker extrusion of sintered iron powder metallurgical preforms P. Venugopal, S. Venkatraman, R. Vasudevan and K.A. Padmanabhan (Madras, India) ...165 An upper-bound analysis of an axisymmetrical coining process J.M. Monaghan (Dublin, Ireland) ............................................................................................. 175 Elimination of distortion near the cut-off edges of cold roll-formed large thick channels H. Ona (Tokyo, Japan), T. Jimma (Yokohama, Japan) and N. Utsunomiya (Tokyo, Japan ) ........................................................................................................................................... 193 Production of thin tubes and tapered cups by the spinning of sintered powder preforms K. Yamaguchi, N. Takakura and M. Fukuda (Kyoto, Japan) ........................................................................................................................................... 203 Meeting Reports ................................................................................................................................. 215 Book Reviews ..................................................................................................................................... 217

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Vol. 16, No. 3 On the properties and economics of sintered iron powder metallurgical extrudes P. Venugopal, S. Venkatraman, R. Vasudevan and K.A. Padmanabhan (Madras, India ) .. 231 Loads in the process of elongating rolling in the assel mill W. Dobrucki and A. Pietrzykowski (Krakow, Poland) ........................................................... 243 Aluminium versus steel in the family car-The formability factor D.V. Wilson (Birmingham, Great Britain) .............................................................................. 257 Wear mechanism of punches during the die shearing of electrical sheets A. Matuszak (Wroclaw, Poland) ............................................................................................... 279 The equivalence between the free bulging process and the uniaxial tensile test Gong Yaofu, Yang Zhengheng and Gong Yiji (Shaanxi, P.R. China) .................................... 291 Analytical model of the high strain-rate expansion of a hollow cylinder B. Avitzur (Bethlehem, PA, U.S.A.) and J. Kowalski (Poniatowa, Poland) ....................... 299 A review of design parameters and machine performance for improved die casting quality G.S.A. Shawki and A.Y. Kandeil (Doha, Qatar) ..................................................................... 315 S h o r t Communication A note on the determination of strain gradients within deformed specimens R. Col~s (Monterrey, Mexico) ................................................................................................... 335 Letter to the Editor A quick and convenient method for calculating the bevel angle of a conical drawpiece Xu Xin Hua (Shanghai, P.R. China) ....................................................................................... 341 Meeting Report ................................................................................................................................. 343 Book Reviews .................................................................................................................................... 349 Diary Supplement ............................................................................................................................. 363 Erratum ............................................................................................................................................. 373 Acknowledgement of Referees ......................................................................................................... 374 Author Index Volume 16 .................................................................................................................. 374