Laser sintering of polyamides and other polymers

Progress in Materials Science

Volumn 57, Issue 2, 2012, Pages 229-267

  Goodridge, R D ^a   Tuck, C J ^a   Hague, R J M ^a  

^a LOUGHBOROUGH UNIVERSITY   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

ADDITIVE MANUFACTURING; COMMERCIAL PRODUCTS; END-USES; LASER SINTERING; MATERIAL CHOICE; MATERIAL PROPERTY; POLYMER MATERIALS; PROTOTYPING TOOLS;

AMIDES; INDUSTRIAL RESEARCH; LASER HEATING; MANUFACTURE; MATERIALS; POLYMERS; RAPID PROTOTYPING;

SINTERING;

EID: 80051588232     PISSN: 00796425     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.pmatsci.2011.04.001     Document Type: Review

References (133)

1. N. Hopkinson, R. Hague, and P. Dickens Rapid manufacturing: an industrial revolution for a digital age 2005 Wiley-Blackwell Berlin
2. R.J.M. Hague, R.I. Campbell, and P.M. Dickens Implications on design of rapid manufacturing Proc Inst Mech Eng Part C: J Mech Eng Sci 217 2003 25 30
3. R.I. Campbell, R.J.M. Hague, B. Sener, and P.W. Wormald The potential for the bespoke industrial designer The Des J 6 2003 24 34
4. R. Hague, S. Mansour, and N. Saleh Material and design considerations for rapid manufacturing Int J Prod Res 42 22 2004 4691 4708
5. Cormier DR, Harrysson OL. Mass customisation via rapid manufacturing. IERC 2002, Orlando, Florida, USA; May 19-21, 2002.
6. N. Hopkinson, and P. Dickens Rapid prototyping for direct manufacture Rapid Prototyp J 7 4 2001 197 202 (Pubitemid 32774987)
7. Chua CK, Leong KF, Lin CS. Rapid prototyping: principles and applications. 3rd ed.; January 2010. 540 pp.
8. Grimm T. User's guide to rapid prototyping. Society of Manufacturing Engineers; 2004. 404 p.
9. Wohlers Report 2009. Wohlers Associates. 250 p.
10. ASTM Committee F42 on Additive Manufacturing Technologies; May 2009.
11. G.N. Levy, R. Schindel, and J.P. Kruth Rapid manufacturing and rapid tooling with layer manufacturing (LM) technologies, state of the art and future perspectives Ann CIRP 5215 2003 589 609
12. Master M, Mathey M. Direct manufacturing of custom-made hearing instruments; an implementation on digital mechanical processing. In: Proceedings of the SME RPA conference, Cincinnati, USA; 30 April-2 May, 2002.
13. Du Plessis P. A functional application Of RM in a military environment - Saab Group Presentation. In: TCT Conference Ricoh Arena Coventry; 21-22 October, 2008.
14. J.T. Montgommery, M.R. Vaughan, and R.H. Crawford Design of an actively actuated prosthetic socket Rapid Prototyp J 16 3 2010 194 201
15. J.M. Williams, A. Adewunmi, R.M. Schek, C.L. Flanagan, P.H. Krebsbach, and S.E. Feinberg Bone tissue engineering using polycaprolactone scaffolds fabricated via selective laser sintering Biomaterials 26 2005 4817 4827 (Pubitemid 40347312)
16. S.J. Hollister Porous scaffold design for tissue engineering Nat Mater 4 2005 518 524 (Pubitemid 40952745)
17. B. Rogers, S. Stephens, A. Gitter, G. Bosker, and R. Crawford Double-wall, transtibial prosthetic socket fabricated using selective laser sintering: a case study J Prosthet Orthot 12 3 2000 97 100
18. I. Gibson, D.W. Rosen, and B. Stucker Additive manufacturing technologies: rapid prototyping to direct digital manufacturing 2010 Springer US p. 385-99
19. Hague RJM. The rapid manufacturing of protective sports garments for injury protection. In: 2nd International conference on rapid manufacturing, Loughborough University; 2007.
20. Brennan-Craddock JPJ, Bingham GA, Hague RJM, Wildman RD. Impact absorbent rapid manufactured structures. In: Proceedings of the 19th solid freeform fabrication symposium, Austin TX; August 2008. p. 266-77.
21. Tuck C, Hague R. Rapid manufacturing a low carbon footprint. In: 3rd International conference on rapid manufacturing, Loughborough University, Loughborough, UK; 9th-10th July, 2008.
22. ATKINS - Manufacturing a low carbon future. A feasibility study report published by Loughborough University and Econolyst in submission for DTI funding. .
23. Evans RS, Bourell DL, Beaman JJ, Campbell MI. SLS materials development method for rapid manufacturing. In: Sixteenth solid freeform fabrication symposium, The University of Texas; August 2005. p. 184-96.
24. T.H.C. Childs, G.R. Berzins, G.R. Ryder, and A. Tontowi Selective Laser sintering of an amorphous polymer-simulations and experiments Proc Inst Mech Eng Part B 213 1999 333 349
25. Deckard CR. Selective laser sintering. PhD dissertation, Department of Mechanical Engineering, University of Texas at Austin; 1988.
26. US Patents 4247508/4863538.
27. J.-P. Kruth, G. Levy, F. Klocke, and T.H.C. Childs Consolidation phenomena in laser and powder-bed based layered manufacturing Ann CIRP 56 2 2007
28. Moeskops E, Kamperman N, Van de Vorst B, Knoppers R. Creep behaviour of polyamide in selective laser sintering. In: Proceedings of the 15th solid freeform fabrication symposium, Austin, Texas; 2004. p 60-7.
29. H. Zarringhalam, N. Hopkinson, N.F. Kamperman, and J.J. de Vlieger Effects of processing on microstructure and properties of SLS Nylon 12 Mater Sci Eng: A 435-6 2006 172 180 (Pubitemid 44426492)
30. 3D Systems Corporation. .
31. EOS Electro Optical Systems Gmbh. .
32. D. Pohle, S. Ponader, T. Rechtenwald, M. Schmidt, K.A. Schlegel, and H. Munstedt Processing of three-dimensional laser sintered polyetheretherketone composites and testing of osteoblast proliferation in vitro Macromol Symp 253 2007 65 70 (Pubitemid 47265425)
33. W.Y. Zhou, S.H. Lee, M. Wang, W.L. Cheung, and W.Y. Ip Selective laser sintering of porous tissue engineering scaffolds from poly(l-lactide) carbonated hydroxyapatite nanocomposite microspheres J Mater Sci:Mater Med 19 2008 2535 2540 (Pubitemid 351678712)
34. K.F. Leong, C.K. Chua, and W.S. Gui Verani. Building porous biopolymeric microstructures for controlled drug delivery devices using selective laser sintering Int J Adv Manufact Technol 31 2006 483 489
35. F.E. Wiria, N. Sudarmadji, K.F. Leong, C.K. Chua, E.W. Chung, and C.C. Chan Selective laser sintering adaptation tools for cost effective fabrication of biomedical prototypes Rapid Prototyp J 16 2 2010 90 99
36. D. Drummer, D. Rietzel, and F. Kühnlein Development of a characterisation approach for the sintering behaviour of new thermoplastics for selective laser sintering Phys Proc 5 2010 533 542
37. G.V. Salmoria, and J.L. Leite Selective laser sintering of PA12/HDPE blends: effect of components on elastic/plastic behaviour Polym Test 27 2008 654 659
38. S.R. Athreya, K. Kalaitzidou, and S. Das Processing and characterization of a carbon black-filled electrically conductive Nylon-12 nanocomposite produced by selective laser sintering Mater Sci Eng: A 527 10-11 2010 2637 2642
39. A. Mazzoli, A. Moriconi, and M.G. Pauri Characterisation of an aluminium-filled polyamide powder for applications in selective laser sintering Mater Des 28 3 2007 993 1000 (Pubitemid 44783191)
40. J. Kim, and T.S. Creasy Selective Laser sintering characteristics of nylon 6/clay reinforced nanocomposite Polym Test 23 2004 629 636
41. Y. Wang, Y. Shi, and S. Huang Selective laser sintering of polyamide-rectorite composite Proc IMechE Part L: J Mater Des Appl 219 L1 2005 11 15
42. Koo JH, Pilato L, Wissler G, Cheng J, Ho W, Nguyen K, et al. Innovative selective laser sintering: rapid manufacturing using nanotechnology. In: Proceedings of the 16th solid freeform fabrication symposium, Austin, Texas; 2005.
43. H. Chung, and S. Das Functionally graded nylon-11/silica nanocomposites produced by selective laser sintering Mater Sci Eng A 487 2008 251 257 (Pubitemid 351676792)
44. P.K. Jain, P.M. Pandey, and P.V.M. Rao Selective laser sintering of clay-reinforced polyamide Polym Compos 31 4 2009 732 743
45. Y.S. Shi, and Z.C. Li Development of polymer alloy of polystyrene (PS) and polyamide (PA) for building functional part based on selective laser sintering Proc IMechE Part L: J Mater Des Appl 218/L4 2004 299 306
46. C.-Z. Yan, Y.-S. Shi, J.-S. Yang, and J. Liu Nanosilica/nylon-12 composite powder for selective laser sintering J Reinf Plast Compos 28 23 2009 2889 2902
47. R.D. Goodridge, M.L. Shofner, R.J.M. Hague, M. McClelland, M.R. Schlea, and R.B. Johnson Processing of a Polyamide-12/carbon nanofibre composite by laser sintering Polym Test 30 1 2011 94 100
48. Wahab MS, Dalgarno KW, Cochrane RF, Hassan S. Development of polymer nanocomposites for rapid prototyping process. In: Proceedings of the world congress on engineering, vol II. WCE; 2009.
49. H. Chung, and S. Das Processing and properties of glass bead particulate-filled functionally graded nylon-11 composites produced by selective laser sintering Mater Sci Eng A 437 2006 226 234 (Pubitemid 44524855)
50. B. Partee, S.J. Hollister, and S. Das Selective laser sintering process optimisation for layered manufacturing of CAPA® 6501 polycaprolactone bone tissue engineering scaffolds J Manufact Sci Eng 128 2006 531 540 (Pubitemid 43952207)
51. J.T. Rimell, and P.M. Marquis Selective laser sintering of ultra high molecular weight polyethylene for clinical applications J Biomed Mater Res 53 4 2000 414 420 (Pubitemid 30608806)
52. Y. Shi, Z. Li, H. Sun, S. Huang, and F. Zeng Effect of the properties of the polymer materials on the quality of selective laser sintering parts Proc Inst Mech Eng Part L: J Mater Des Appl 218 2004 247 252
53. R.D. Goodridge, K.W. Dalgarno, and D.J. Wood Indirect selective laser sintering of an apatite-mullite glass-ceramic for potential use in bone replacement applications Proc IMechE Part H: J Eng Med 220 2006 57 68
54. Deckard C. Method and apparatus for producing parts by selective sintering. US Patent 5017753; 1991.
55. T. Yokoyama H. Masuda, K. Higashitani, H. Yoshida, Powder technology handbook 3rd ed. 2006 CRC Press Taylor and Francis Group 349 361
56. Carson JW, Pittenger BH. Bulk properties of powders. In: Davis RJ, editor. Powder metal technologies and applications. Materials Park (OH): ASM international handbook committee, ASM International; 1998. p. 287-301.
57. M. Reimbert, and A. Reimbert Determination of the mechanical properties of cohesive and non-cohesive powdered materials Bulk Solids Handl 1 1 1981 37 41
58. T.A. Bell Solids flowability measurement and interpretation in industry A. Levy, H. Kalman, Handbook of conveying and handling of particulate solids 2001 Handbook of powder technology, Elsevier Science Amsterdam 3 14
59. J.K. Prescott, and R.A. Barnum On powder flowability Pharmaceut Technol 2000 60 84
60. S. Yang, and J.R.G. Evans Metering and dispensing of powder; the quest for new solid freeforming techniques Powder Technol 178 2007 56 72 (Pubitemid 47247805)
61. Dickens ED, Lee BL, Taylor GA, Magistro AJ, Ng H, McAlea KP, et al. Sinterable semi-crystalline powder and near fully dense article formed therewith, United States Patent Number 6136948; October 24, 2000.
62. Clausen CH, Mickish DJ, Nebe WJ, Vaidya SR. Laser sinterable thermoplastic powder. US Patent 6110411.
63. EOS Gmbh Advanced Training Course.
64. D.J. Craik, and B.F. Miller The flow properties of powders under humid conditions J Pharm Pharmacol 10 1958 136T 144T
65. H. Leuenberger, and Y. Zimmerman Electrostatic charges of granulates and free flowing powders Acta Pharm Technol 22 1976 255 266
66. Gersch M, Muller F, Mattes T, Keller P. Rounded-particle plastic powder in particular for application in laser sintering. US Patent 7601422; 2009.
67. I. Gibson, and D. Shi Material properties and fabrication parameters in selective laser sintering process Rapid Prototyp J 3 4 1997 129 136 (Pubitemid 127655040)
68. J.P. Kruth, X. Wang, T. Laoui, and L. Froyen Lasers and materials in selective laser sintering Assem Automat 23 4 2003 357 371
69. D.T. Pham, S. Dimov, and F. Lacan Selective laser sintering: applications and technological capabilities Proc Inst Mech Eng Part B: J Eng Manufact 213 5 1999 435 449
70. J.D. Williams, and C.R. Deckard Advances in modelling the effects of selected parameters on the SLS process Rapid Prototyp J 4 2 1998 90 100 (Pubitemid 128725351)
71. Mcalea KP, Forderhasse PF, Booth RB. Selective laser sintering of polymer powder of controlled particle size distribution. US Patent 5817206; 1998.
72. R.D. Goodridge, R.J.M. Hague, and C. Tuck An empirical study into laser sintering of ultra-high molecular weight polyethylene (UHMWPE) J Mater Process Technol 210 1 2010 72 80
73. Wendel B, Dallner C, Schmachtenberg E. New developments in selective laser sintering of polymers. In: Proc 5th laser assisted net-shape engineering conf (LANE 2007), Erlangen; 2007. p. 323-31.
74. Scholten HH, Christoph MW. Use of a nylon 12 for selective laser sintering. US Patent 6245281 B1; June 12, 2001.
75. J.C. Nelson, S. Xuef, J.W. Barlow, J.J. Beaman, H.L. Marcus, and D.L. Bourell Model of the selective laser sintering of bisphenol - a polycarbonate Ind Eng Chem Res 32 1993 2305 2317
76. U. Ajoku, N. Saleh, N. Hopkinson, R. Hague, and P. Erasenthiran Investigating mechanical anisotropy and end-of-vector effect in laser-sintered nylon parts Proc IMechE Part B: J Eng Manufact 200 2006 1077 1086
77. EOS Gmbh Product Information. [accessed 02.06.10].
78. Conversation with 3D Systems Ltd.
79. A.E. Tontowi, and T.H.C. Childs Density prediction of crystalline polymer sintered parts at various powder bed temperatures Rapid Prototyp J 7 2001 180 184 (Pubitemid 32690538)
80. DeGrange JE. Establishing material and process boundaries for low volume aerospace production. Presented at rapid prototyping and manufacturing - advanced product development solutions society of manufacturing engineers, Dearborn, USA; May 10-13, 2004.
81. Silverman TJ, Hall A, South B, Yong W, Koo JH. Material Properties and Microstructural characterisation of specimens manufactured by selective laser sintering. In: SME rapid conference, Detroit; May 1-3, 2007.
82. Gornet T, A multizone heater for the SLS process. In: 3DS user group conference, California, USA; April 6-10; 2008.
83. www.integra-support.com/upgrades.php.
84. P.K. Venuvinod, and W. Ma Rapid prototyping - laser based and other technologies 2004 Kluwer Academic London
85. Zarringhalam H. Investigation into crystallinity and degree of particle melt in selective laser sintering. PhD thesis, Loughborough University, UK; 2007.
86. Y. Kong, and J.N. Hay The enthalpy of fusion and degree of crystallinity of polymers as measured by DSC Eur Polym J 39 2003 1721 1727
87. C.M. Cheah, K.F. Leong, C.K. Chua, K.H. Low, and H.S. Quek Characterisation of microfeatures in selective laser sintered drug delivery devices Proc Inst Mech Eng Part H: J Eng Med 216 2002
88. Nelson JC. Selective laser sintering: a definition of the process and an empirical sintering model. PhD dissertation, University of Texas, Austin, TX; 1993.
89. B. Caulfield, P.E. McHugh, and S. Lohfeld Dependence of mechanical properties of polyamide components on build parameters in the SLS process J Mater Process Technol 182 2007 477 488 (Pubitemid 44693327)
90. H.C.H. Ho, I. Gibson, and W.L. Cheung Effects of energy density on morphology and properties of selective laser sintered polycarbonate J Mater Process Technol 89-90 1999 204 210
91. J.J. Beaman, J.W. Barlow, D.L. Bourell, R.H. Crawford, H.L. Marcus, and K.P. McAlea Solid freeform fabrication: a new direction in manufacturing 1997 Kluwer Academic Dordrecht
92. S. Eosoly, D. Brabazon, S. Lohfeld, and L. Looney Selective laser sintering of hydroxyapatite/poly - caprolactone scaffolds Acta Biomater 6 7 2010 2511 2517
93. Vail NK. Preparation and characterisation of microencapsulated, finely divided ceramic materials for selective laser sintering. PhD dissertation, University of Texas, Austin, TX; 1994.
94. S. Kolosov, G. Vansteenkiste, N. Boudeau, J.C. Gelin, and E. Boillat Homogeneity aspects in selective laser sintering (SLS) J Mater Process Technol 177 2006 348 351 (Pubitemid 44038230)
95. P.K. Jain, P.M. Pandey, and P.V.M. Rao Effect of delay time on part strength in selective laser sintering Int J Adv Manufact Technol 43 2009 117 126
96. R.-J. Wang, L. Wang, L. Zhao, and Z. Liu Influence of process parameters on part shrinkage in SLS Int J Adv Manufact Technol 33 2007 498 504 (Pubitemid 46972370)
97. K. Senthilkumaran, P.M. Pandey, and P.V.M. Rao Influence of building strategies on the accuracy of parts in selective laser sintering Mater Des 30 2009 2946 2954
98. Kruth J-P, Levy G, Schnidel R, Craeghs T, Yasa E. Consolidation of polymer powders by selective laser sintering. PMI2008, Ghent, Belgium; September 2008.
99. B. Van Hooreweder, F. De Coninck, D. Moens, R. Boonen, and P. Sas Microstructural characterisation of SLS-PA12 specimens under dynamic tension/compression excitation Polym Test 29 3 2010 319 326
100. Woicke N, Wagner T, Eyerer P. Carbon assisted laser sintering of thermoplastic polymers. In: ANTEC annual technical conference, society of plastics engineers, Boston/USA; 2005. p. 2513-7.
101. Saleh N, Hague RJ, Mansour S. Investigation into the mechanical properties of rapid prototyping materials. In: Proceedings of 13th solid freeform fabrication symposium, Austin, Texas, USA; August 5-7, 2002. 10pp.
102. R.D. Goodridge, R.J.M. Hague, and C.J. Tuck Effect of long-term ageing on the tensile properties of a polyamide 12 laser sintering material Polym Test 29 4 2010 483 493
103. H. Batzer, and U.T. Kreibich Influence of water on thermal transitions in natural polymers and synthetic polyamides Polym Bull 1981 11 12
104. L.C.E. Struik Physical aging in amorphous polymers and other materials 1978 Elsevier Sci. Pub. Co. Amsterdam, Oxford
105. K.D. Dotchev, and W.A. Yusoff Recycling of polyamide 12 based powders in the laser sintering process Rapid Prototyp J 15 2009 192 203
106. C. Ramesh Crystalline transitions in nylon 12 Macromolecules 32 1999 5704 5706
107. D.T. Pham, K.D. Dotchev, and W.A.Y. Yusoff Deterioration of polyamide powder properties in the laser sintering process Proc IMechE Part C: J Mech Eng Sci 222 2008 2163 2176
108. P. Kollross, and A.J. Owen The influence of hydrogen bonding on mechanical anisotropy in oriented nylon-12 Polymer 23 1982 829 833 (Pubitemid 12518765)
109. Gornet TJ, Davis KR, Starr TL, Mulloy KM. Characterization of selective laser sintering materials to determine process stability. In: Solid freeform fabrication symposium proceedings; 2002. p. 546-53.
110. Advanced Laser Materials. .
111. T.H.C. Childs, and A.E. Tontowi Selective laser sintering of a crystalline and glass-filled crystalline polymer: experiments and simulations Proc IMechE Part B: J Eng Manufact 215 11 2001 1481 1495 (Pubitemid 33773140)
112. K.K.B. Hon, and T.J. Gil Selective laser sintering of SiC/polyamide composites CIRP Ann 52 1 2003 173 176
113. T.J. Gill, and K.K.B. Hon Experimental investigation into the selective laser sintering of silicon carbide polyamide composites Proc Inst Mech Eng Part B: J Eng 218 2004 1249 1256
114. F.E. Wiria, K.F. Leong, C.K. Chua, and Y. Liu Poly-e-capralactone/ hydroxyapatite for tissue engineering scaffold fabrication by selective laser sintering Acta Biomater 3 1 2007 1 12 (Pubitemid 44804297)
115. K.H. Tan, C.K. Chua, K.F. Leong, C.M. Cheah, W.S. Gui, and W.S. Tan SLS of biocompatible polymers for applications in tissue engineering Biomed Mater Eng 15 2005 113 124 (Pubitemid 40916706)
116. 3D Systems Duraform AF data sheet; 2010. .
117. EOS Alumide data sheet; 2010. EOS.
118. 3/polysterene composites prepared by SLS Mater Lett 60 9-10 2006 1219 1223 (Pubitemid 43173476)
119. K.I. Winey, and R.A. Vaia Polymer nanocomposites MRS Bull 32 April 2007 314 319
120. S.S. Ray, and M. Okamoto Polymer/layered silicate nanocomposites: a review from preparation to processing Prog Polym Sci 28 2003 1539 1642
121. D. Uzunsoy, I.T.H. Chang, and P. Bowen Fracture behaviour of selective laser sintered rapidsteel 2.0 under static and dynamic loading Mater Sci Technol 19 7 2003 897 901
122. C.-Z. Yan, Y.-S. Shi, J.-S. Yang, and L. Xu Preparation and selective laser sintering of nylon-12-coated aluminium powders J Compos Mater 43 17 2009 1835 1851
123. N.K. Tolochko, T. Laoui, Y.V. Khlopkov, S.E. Mozzharov, V.I. Titov, and M.B. Ignatiev Absorptance of powder materials suitable for laser sintering Rapid Prototyp J 6 2000 155 160
124. R.L. Simpson, F.E. Wiria, A.A. Amis, C.K. Chua, K.F. Leong, and U.N. Hansen Development of a 95/5 poly(l-lactideco-glycolide)/hydroxylapatite & b-tricalcium phosphate scaffold as bone replacement material via selective laser sintering J Biomed Mater Res Part B: Appl Biomater 84B 1 2008 17 25
125. J. Frenkel Viscous flow of crystalline bodies under the action of surface tension J Phys 9 5 1945 358 391
126. H.C.H. Ho, W.L. Cheung, and I. Gibson Effects of graphite powder on the laser sintering behaviour of polycarbonate Rapid Prototyp J 8 4 2002 233 242 (Pubitemid 35010228)
127. Watts DM, Hague RJM. Exploiting the design freedom of rapid manufacturing. In: Proceedings of the 17th Solid Freeform Fabrication Symposium, Austin, Texas; 2006. p 656-67.
128. J.J. Crookston, A.C. Long, G.A. Bingham, and R.J.M. Hague Finite-element modelling of mechanical behaviour of rapid manufactured textiles Proc IMechE Part L: J Mater Des Appl 222 2008 29 36 (Pubitemid 351198242)
129. G.A. Bingham, R.J.M. Hague, C.J. Tuck, A.C. Long, J.J. Crookston, and M.N. Sherburn Rapid manufactured textiles Int J Comput Integr Manufact 20 1 2007 96 105 (Pubitemid 44838082)
130. D.J. Brackett, I.A. Ashcroft, and R.J.M. Hague Multi-physics optimisation of 'brass' instruments - a new method to include structural and acoustical interactions Struct Multidisc Optim 40 2010 611 624
131. Innovations: "The next frontier: new technologies will enable cost-effective customization". Strategic Direction 2008;248:30-2.
132. N. Hopkinson, and P. Dickens Analysis of rapid manufacturing - using layer manufacturing processes for production Proc Inst Mech Eng Part C: J Mech Eng Sci 217 2003 31 39
133. M. Ruffo, C. Tuck, and R. Hague Cost estimation for rapid manufacturing - laser sintering production for low to medium volumes Proc IMechE Part B: J Eng Manufact 220 9 2006 1417 1427 (Pubitemid 46599860)