Department of Mechanical Engineering  Prof. Debes Bhattacharyya Qual:  ME Calc., PhD Jad., FRSNZ, FIPENZ, MASME, MASM,  Phone:  (0064) 9 373 7599, Ex 88149 Fax:  (0064) 9 373 7479  Office  Eng. Building, Room 1.909  e-mail: d.bhattacharyya@auckland.ac.nz Role/Teaching  Head of Department  Professor of Mechanical Engineering  Director of the Centre for Advanced Composite Materials  Research Interests/Activities  Composite materials  Manufacturing technology  Synthetic fibres  Natural fibres  Thermoplastic composites  Biocomposites    Current Reseach/Activities  Manufacture of Composites from Recycled Thermoplastics and Woodfibre  Injection moulding of Woodfibre-Thermoplastic Composites  Extrusion of Woodfibre-Thermoplastic Composites  Manufacture and Thermoforming of Bio-Composite Sheets  Selected Publications  BOOK  D Bhattacharyya: Composite Sheet Forming (Editor/Author), Volume 11 of Composite Materials Series published by Elsevier Science Publishers, Amsterdam, The Netherlands (1997) 531 pages.  BOOK CHAPTERS  D Bhattacharyya: Thermoforming of Fibre-Reinforced Composite Sheets; Polypropylene: An A-Z Reference, ed. J Karger-Kocsis, Chapman and Hall, London, UK, accepted for publication **[Invited Contribution]** D Bhattacharyya and G R Christie, Modelling and Analysis of Thermoforming Processes; Polypropylene: An A-Z Reference, ed. J Karger-Kocsis, Chapman and Hall, London, UK, accepted for publication **[Invited Contribution]**  D Bhattacharyya and T A Martin: Roll Forming of Composite Sheets; Polypropylene: An A-Z Reference, ed. J Karger-Kocsis, Chapman and Hall, London, UK, accepted for publication **[Invited Contribution]**.  T A Martin, G R Christie and D Bhattacharyya: Grid Strain Analysis and Its Application in Composite Sheet Forming; Chapter 6 in Composite Sheet Forming (ed. D Bhattacharyya), Vol. 11, Composite Materials Series, Elsevier Science, Amsterdam, The Netherlands (1997) 217-246.  T A Martin, S J Mander, R J Dykes and D Bhattacharyya: Bending of Continuous Fibre-Reinforced Thermoplastic Sheets; Chapter 9 in Composite Sheet Forming (ed.  D Bhattacharyya), Vol. 11, Composite Materials Series, Elsevier Science, Amsterdam, The Netherlands (1997) 371-402.  S J Mander, S M Panton, R J Dykes and D Bhattacharyya: Roll Forming of Sheet Materials; Chapter 12 in Composite Sheet Forming (ed. D Bhattacharyya), Vol. 11, Composite Materials Series, Elsevier Science, Amsterdam, The Netherlands (1997) 473-516.  T A Martin and D Bhattacharyya: Squeeze Flow of Thermoplastic Composites; submitted to Polypropylene: An A-Z Reference, ed. J. Karger-Kocsis, Chapman and Hall, London, UK, accepted for publication **[Invited Contribution]**. ACCEPTED/PUBLISHED PAPERS  R J Dykes, D Bhattacharyya and T A Martin: Longitudinal and Transverse Shear Behaviour of Glass/Polypropylene Composites; accepted for publication in Composites: Part A.  D Bhattacharyya and D P W Horrigan: A Study of Hole Drilling in Kevlar Composites accepted for publication in Composites Science & Technology.  S J Mander, D Bhattacharyya, I F Collins and P Watson: Transverse Flow Characterisation of Fibre Reinforced Thermoplastic Composites; provisionally accepted for Composites: Part A.  J Krebs, D Bhattacharyya and K Freidrich: A Direct Comparison of Matched-Die and Diaphragm Forming of Thermoplastic Composite Sheets; accepted for publication in Composites:Part A.  J T Lin, D Bhattacharyya and W G Ferguson: Chip Formation Mechanism of Machining SiC Particulate Reinforced Aluminium Metal Matrix Composites; accepted for publication in Composites Science & Technology.  R J Dykes, D P W Horrigan and D Bhattacharyya: Numerical Analysis of Shape Fixability in Continuous Fibre Reinforced Thermoplastic Sheets; Composites Processing and Microstructure, Vol 4, ICCM-11, ed. M L Scott, Woodhead Publishing Ltd, Cambridge, UK (1997) 352-359.  J Krebs, D Bhattacharyya and K Freidrich: Production and Evaluation of Secondary Composite Aircraft Components - A Comprehensive Case Study; Composites:Part A, Vol 28A, (1997) 481-489.  D Bhattacharyya and I F Collins: Thermoforming of Continuous Fibre Reinforced Thermoplastic Sheets, Proc 22nd Australasian Polymer Society Conference, Auckland, New Zealand (1997) 41.  J van Houts, D Bhattacharyya and K Jayaraman: Mechanical Properties of Natural Fibre-Reinforced Thermoplastic Composites; Proc Int Conf on Advanced Materials Development & Performance, eds. W G Ferguson and W Gao, Auckland, New Zealand (1997) 477-482.  J T Lin and D Bhattacharyya: Machining of Particulate Reinforced Aluminium Metal Matrx Composites; Proc Int Conf on Advanced Materials Development & Performance, eds. W G Ferguson and W Gao, Auckland, New Zealand (1997) 501-506.  J van Houts, D Bhattacharyya and K Jayaraman: Mechanical Properties of Waste Plastic/Wood Fibre Composites; Proc 22nd Australasian Polymer Society Conference, Auckland, New Zealand (1997) 315.  L D McGarva, D Bhattacharyya and B T Åström: An Investigation of the In-Situ Consolidation Process of Thermoplastic Filament Winding; Proc Int Conf on Advanced Materials Development & Performance, eds. W G Ferguson and W Gao, Auckland, New Zealand (1997) 495-500.  R J Dykes, D P W Horrigan and D Bhattacharyya: Rheological Study of Continuous Fibre Reinforced Thermoplastics Using Vee-Bending; Proc 22nd Australasian Polymer Society Conference, Auckland, New Zealand (1997) 42.  T A Martin and D Bhattacharyya: Rapid Manufacuring of Thermoplastic Composite Sections by Roll Forming; Proc. Australasian Conference on Technology for Manufacturing (Vol II), Palmerston North, New Zealand (1997) 324-333.  R J Dykes, D Bhattacharyya and T A Martin: Longitudinal and Transverse Shear Behaviour of Glass/Polypropylene Composites; Fourth Int. Conf. on Flow Processes in Composite Materials, Aberystwyth, Wales (1996).  M E Bowis, D Bhattacharyya and M V Uprichard: Effects of Process Parameters on the Properties of Radiata Pine HTMP-Polypropylene Fibre Composites; Progress in Advanced Materials and Mechanics, eds. W Tzuchiang and T W Chou, Peking University Press, Beijing, China (1996) 956-961.  J Krebs, K Friedrich, R Christie and D Bhattacharyya: Inter-ply and Inter-ply Shear Processes in Continuous Fibre-Reinforced Thermoplastics; Fourth Int. Conf. on Flow Processes in Composite Materials, Aberystwyth, Wales (1996).  G R Christie, I F Collins and D Bhattacharyya: Out-of-plane Buckling of Fibre-reinforced Thermoplastic Sheets Under Homogeneous Biaxial Conditions; Journal of Applied Mechanics, ASME Trans., Vol. 62 (1995) 834-840.  P Watson, I F Collins and D Bhattacharyya: Squeezing Flow of Fibre Reinforced Visco-elastic Composites; published in a special volume of IUTAM Symposium on Anisotropy, Inhomogeneity and Nonlinearity in Solid Mechanics, ed. D F Parker and A H England, Kluwer Academic Publishers (1995) 121-126.  S J Mander, R J Dykes and D Bhattacharyya: Fibre-Reinforced Thermoplastic (FRTP) Composites and Their Applications; Chemistry in New Zealand, Vol. 59, No.6 (1995) 6-14. S J Mander, D Bhattacharyya and I F Collins: Roll Forming of Fibre Reinforced Thermoplastic Sheet; Proc. Tenth Int. Conf. on Composite Materials, Vol. III, ed. A Poursartip and K Street, Woodhead Publishing Ltd, Cambridge, UK (1995) 413-420.  T A Martin, D Bhattacharyya and I F Collins: Bending of Fibre Reinforced Thermoplastic Sheets; Composites Manufacturing, Vol. 6, No. 3-4 (1995) 177-187.  J T Lin, D Bhattacharyya and C Lane: Machinability of a Silicon Carbide Reinforced Aluminium Metal Matrix Composite; WEAR, Vol. 181-183 (1995) 883-888.  J Krebs, K Friedrich and D Bhattacharyya: 3-D Thermoforming of Continuous Fibre Reinforced Thermoplastic Composite Sheets; Third Int. Conf. on Flow Processes in Composite Materials, Galway, Ireland (1994) 3-12.  G R Christie, I F Collins and D Bhattacharyya: Modelling of Out-of-plane Buckling Phenomena during Thermoforming of Thermoplastic Composite Sheets; presented at "Advancing with Composites '94", International Meeting on Composite Materials,  ed. I. Crivelli Visconti, Milan, Italy (May 1994) 355-365.  D Bhattacharyya and S J Mander: Drilling of Kevlar Composites; Machining of Composite Materials, eds. T S Srivatsan, C T Lane and D M Bowden, ASM International, Ohio, USA (1994) 87-96.  K Rajan, D Bhattacharyya and W Gao: Analytical Representations of Deformation Texture Gradients in Ceramic Superconductors; eds. U Balachandran, E W Collings and A Goyal, TMS, Warrendale, PA (1994) 311-320.  D Bhattacharyya, M N Allen and S J Mander: Cryogenic Machining of Kevlar Composites; Materials and Manufacturing Processes, Vol.8, No.6 (1993) 631-652 - selected to be republished from Processing and manufacturing of Composite Materials, eds. T S Srivatsan and S Chsndrashekhar, PED-Vol. 49, ASME, New York (1991) 133-147.  N F Gregory, W G Ferguson, D Bhattacharyya and C Thomas: Interfacial Characteristics of Squeeze Cast Saffil Fibre-Aluminium Matrix Composites, presented at MMC-4, Sydney, Australia (1993).  D Bhattacharyya, C R Burt and T A Martin: Forming of Fibre Reinforced Thermoplastic Sheets; Advanced Composites, The Minerals, Metals & Materials Soc (TMS) publication, eds. T Chandra and A K Dhingra (1993) 875-882.  T A Martin, D Bhattacharyya and R B Pipes: Deformation Characteristics and Formability of    Fibre-Reinforced Thermoplastic Sheets; Composites Manufacturing, vol.3, no.3 (1992). D Bhattacharyya, M E Bowis and J T Gregory: Influences of Al2O3 Microsphere Reinforcement on the Mechanical Behaviour and Weldability of a 6061 Aluminium Metal Matrix Composite; Machining of Composite Materials, eds. T S Srivatsan and D M Bowden (1992) 49-56. **[Invited Contribution]**  D Bhattacharyya, G Murti, J L Mihelich, K Xia and M J Couper: Machinability Study on a Ceramic Microsphere-Reinforced Aluminium Matrix Composite; Tech Paper No. EM92-254, Soc. of Manufacturing Engineers, USA, (1992).  T A Martin, D Bhattacharyya and R B Pipes: Computer Aided Grid Strain Analysis in Fiber Reinforced Thermoplastic Sheet Forming; Computer Aided Design in Composite Materials Technology, eds. S G Advani et al., Computational Mechanics Publications-Elsevier Applied Science (1992) 143-162.  Dykes, R J, Horrigan, D P W and Bhattacharyya, D: Numerical analysis of shape fixability and internalstresses in continuous fibre reinforced thermoplastics, Proceedings iccm 11, brisbane, july 1997. Pp 342-348.  Other Interests  Theatre and movies,  Family