Skip to main content
Intended for healthcare professionals
Restricted access
Review article
First published online September 24, 2015

Manufacturing of thermoplastic composite sandwich structures: A review of literature

Abstract

Composite sandwich structures show promising lightweight properties for the aviation industry. Nowadays time-consuming manufacturing methods still prevent an extensive application of composite sandwiches, which can be overcome by the use of thermoplastic polymers in skins and core. During manufacturing of thermoplastic composite (TPC) sandwich structures, the joining of skins and core is a critical step. Therefore, several skin–core joining methods have been under investigation and development in the published literature, which can be categorized into adhesive bonding or fusion bonding. Fusion bonding by means of vacuum moulding, compression moulding or in situ foaming shows great potential for joining sandwich skins and core. Although various phenomena such as core collapsing or skin deconsolidation challenge the processes. This article aims to present an overview of research that has been done in the area of manufacturing TPC sandwich structures and will serve as a baseline and aid for further research and development efforts.

Get full access to this article

View all access and purchase options for this article.

References

1. Kulandaivel P. Manufacturing and performance of thermoplastic composite sandwich structures. PhD Thesis, University of Nottingham, UK, 2006.
2. Cabrera N, Alcock B, Peijs T. Design and manufacture of all-PP sandwich panels based on coextruded polypropylene tapes. Compos B Eng 2008; 39(7-8): 1183–1195.
3. Brown K, Brooks R, Williamson P, et al. Development of a novel thermoplastic composite sandwich structure for a rail application. In: SAMPE Europe - 29th International Conference and Forum, Paris, France, 31 March–2 April 2008, pp. 220–225. Europe: SAMPE.
4. Karlsson KF, Aström BT. Manufacturing and applications of structural sandwich components. Compos A Appl Sci Manuf 1997; 28(2): 97–111.
5. Pappada S, Rametta R, Passaro A, et al. Processing, mechanical properties, and interfacial bonding of a thermoplastic core foam/composite-skin sandwich panel. Adv Polym Technol 2010; 29(3): 137–145.
6. Skawinski O, Binetruy C, Krawczak P, et al. All-thermoplastic composite sandwich panels – part 1: manufacturing and improvement of surface quality. J Sandwich Struct Mater 2004; 6(5): 399–421.
7. McGarva L. Thermoplastic composite sandwich components: Experimental and numerical investigation of manufacturing issues, PhD Thesis, Royal Institute of Technology, Stockholm, Sweden, 2002.
8. Sorrentino L, Aurilia M, Iannace T. Effects of the thermoforming on the cell morphology of a thermoplastic core. In: 17th International Conference of Composite Materials, Edinburgh, Scotland, 27–31 July 2009.
9. McGarva L, Aström BT. Experimental investigation of compression moulding of glass/PA12-PMI foam core sandwich components. Compos A Appl Sci Manuf 1999; 30(10): 1171–1185.
10. Beukers A. Cost effective composite plate & shell structures for transports by manufacturing technologies like in-situ foaming, thermoforming and pressforming continuous fiber reinforced thermoplastic sheets. In: Advanced Materials and Structures from Research to Application, 13th International European Chapter Conference of the Society for the Advancement of Material and Process Engineering, Hamburg, Germany, 11–13 May, 1992, pp. 427–443. Europe: SAMPE.
11. Aström BT, Akermo M, Carlsson A, et al. The all-thermoplastic sandwich concept. In: Sandwich Construction 4: Fourth International Conference on Sandwich Construction, Stockholm, Sweden, 9–11 June, 1998, pp. 705–718. Georgia: EMAS.
12. Parlevliet P, Weimer C, Thermoplastic high performance composites: environmental requirements on future helicopter airframes. In: 18th International Conference on Composite Materials, Edinburgh, Scotland, 2009.
13. Vieille B, Casado V, Bouvet C. Comparative study on the impact behaviour and damage tolerance of woven carbon fibre reinforced thermoplastic – and thermosetting – composites. In: ECCM15, Venice, Italy, 2012.
14. Moore D, Seferis J. Toughness characterization of carbon fibre/polyether ether ketone (CF/PEEK) laminates. Int Union Pure Appl Chem 1991; 63(11): 1609–1625.
15. Ehrenstein G. Polymere werkstoffe. 2nd ed. München-Wien: Karl-Hanser Verlag, 1992.
16. Offringa A, Davies C. Gulfstream V floors – primary aircraft structure in advanced thermoplastics. J Adv Mater 1996; 27(2): 2.
17. Akermo M, Aström BT. Experimental investigation of compression molding of Glass/PP-PP foam core sandwich components. J Thermoplast Compos Mater 1999; 12(4): 297–316.
18. Kulandaivel PP, Brooks R, Dunmore M, et al. Processing and performance of thermoplastic composite sandwich beams for automotive applications. In: 37th International SAMPE Technical Conference, Seattle, USA, 2005.
19. Pappada S, Rametta R, Lanzilotto L, et al. Effect of manufacturing process and skin-core adhesion efficiency on the mechanical properties of a thermoplastic sandwich. In: ICCM 17, Edinburgh, Scottland, 27–31 July 2009, p. IB6: 6. ICCM.
20. Nowacki J, Neitzel M, Mitschang P. Potential für Serienfertigung- thermoplastische Sandwich- Strukturbauteile in einem Schritt geformt. KU Kunststoffe Jahr 2001; 91: 92–95.
21. Daniel IM, Gdoutos EE, Wang K, et al. Failure modes of composite sandwich beams. Int J Damage Mech 2002; 11(4): 309–334.
22. Achilles P. Design of sandwich structures. PhD Thesis, Robinson College, Cambridge, UK, 1998.
23. Muzzy J, Pfaendter J, Shaw B, et al. Thermoplastic composite sandwich panels. In: Automotive Composite Conference, Troy, USA, 19–20 September, 2001.
24. BASF. Erstes Serienbauteil aus Ultratec dem Schaumstoff aus Ultrason von BASF, BASF press release, http://www.basf.de/de/produkte/kstoffe/news/pm.htm?printview=on&pmid=1344 (2003, accessed May2013).
25. Composites W. MonoPan®- the future in material technology, www.monopan.ca/docs/MonoPan.pdf (accessed August 2014).
26. Brown KA, Brooks R, Warrior NA, Kulandaivel PP, Modelling the impact behaviour of thermoplastic composite sandwich structures. In: 16th international conference of composite materials, Kyoto, Japan, 3–8 July 2007.
27. Brooks R, Kulandaivel PP, Rudd CD. Skin consolidation in vacuum moulded thermoplastic composite sandwich beams. In: 8th International Conference on Sandwich Structures (ed Antonio J.M. Ferreira), Porto, Portugal, 6–8 May 2008, pp. 627–637. FEUP.
28. Passaro A, Corvaglia P, Manni O, et al. Processing-properties relationship of sandwich panels with polypropylene-core and polypropylene matrix composite skins. Polym Compos 2004; 25(3): 307–318.
29. Mayer C, Ostgathe M, Breuer U, et al. High speed manufacturing of knitted thermoplastic composite sandwich systems. In: 17th international SAMPE Europe Conference, Basel, Switzerland, 28–30 May 1996. Europe: SAMPE.
30. Renault T. Sandwiform®: thermoplastic composite sandwich structures, Society of Manufacturing engineers 2002, Technical paper EM02-126.
31. Reynolds N, Pharaoh M, Papadakis N, et al. All-thermoplastic composite parts for the automotive industry part A: Manufacture and testing. In: 4th Conference on Materials for Lean Weight Vehicles, LWV 4, Gaydon, UK, 30–31 October 2001.
32. McGarva LD, Aström BT. Compression moulding of thermoplastic composite sandwich components. In: ICCM 12, Paris, France, 5–9 July 1999. ICCM.
33. Trende A, Aström BT. Heat transfer in compression molding of thermoplastic composite laminates and sandwich panels. J Thermoplast Compos Mater 2002; 15: 43–63.
34. Rozant O, Bourban PE, Manson JA. Manufacturing of three dimensional sandwich parts by direct thermoforming. Compos A Appl Sci Manuf 2001; 32(11): 1593–1601.
35. Rozant O, Bourban PE, Manson JA. Experimental and numerical investigation of the forming of thermoplastic sandwiches. In: ICCM12, Paris, France, 5–9 July 1999. ICCM.
36. Rozant O, Bourban PE, Manson JA, et al. Preheating of thermoplastic sandwich materials for rapid thermoforming. J Thermoplast Compos Mater 2000; 13(6): 510–523.
37. Rozant O, Vollan A, Spichtig J, et al. Development of an explicit finite element solution for the forming simulation of thermoplastic sandwiches. In: 3rd Swiss CAD-FEM Users’ Meeting’98, Lucerne, Switzerland, 18–19 June 1998. Ireland: CADFEM.
38. Brouwer WD. Foam forming: a promising technology for the volume manufacture of ac sandwich components. In: 6th annual ASM/ESD Advanced Composites Conference, Detroit, USA, 8–11 October 1990. ASM International.
39. Provo Kluit PWC. The development of in-situ foamed sandwich panels. PhD Thesis, TU Delft, Netherlands, Delft, 1997.
40. FITS-Technology, http://www.fitstechnology.com/ (accessed September 2014).
41. Reyes G, Rangaraj SS. Interfacial fracture properties of novel carbon foam structures. In: 41st SAMPE Fall Technical Conference, Wichita, USA, 19–22 October 2009.
42. Brooks R, Kulandaivel P, Rudd C. Vacuum moulding of thermoplastic composite sandwich beams. In: International SAMPE Europe Conference Paris, France, 2004, pp. 494–500.
43. Passaro A, Corvaglia P, Manni O, et al. Processing and characterization of PP-based thermoplastic sandwich panels. In: 23rd International SAMPE Europe Conference, Paris, France, 9–11 April 2002, pp. 687–699. Europe: SAMPE.
44. Breuer U, Ostgathe M, Neitzel M, Manufacturing of all-thermoplastic sandwich systems by a one-step forming technique. Polym Compos 1998; 19(3): 275–279.
45. Akermo M, Aström BT. Modelling face-core bonding in sandwich manufacturing: Thermoplastic faces and rigid closed-cell foam core. Compos A Appl Sci Manuf 1998; 29(6): 485–494.
46. Zepf HP, Sprenger KH. Composite-sandwichbauteile durch zwischenspritzen von geschäumten thermoplasten. In: 28. AVK Tagung, Baden-Baden, Germany, 1–2 October 1997, pp. 1–10. AVK.
47. Campbell F. Manufacturing technology for aerospace structural materials. Amsterdam: Elsevier, 2006.
48. Duchene R. Process for producing of a honeycomb structure and a honeycomb structure so produced. Patent US005683782A, 1995.
49. Huebner F. Method for making welded honeycomb core. Patent US4957577, USA, 1988.
50. Pflug J, Verpoest I, Bratfisch P, et al. Thermoplastic folded honeycomb cores - cost efficient production of all thermoplastic sandwich panels. In: ICCM13, Beijing, China, 25–29 June 2001. ICCM.
51. Evonik AG. Product information - ROHACELL®RIST, 2011.
52. Gaugler und Lutz OHG. Airex® R82 Materialdatenblatt, July 2011.
53. Tubus-Bauer, Datasheet tubus core, 2007.
54. Pizzi A, Mittal A. Handbook of adhesive technolgy. New York: Marcel Dekker, Inc., 1994.
55. Offringa A. Thermoplastic aircraft floor panels, technologies, and applications. J Adv Mater 1995; 26: 12–18.
56. Wingfield J. Treatment of composite surfaces for adhesive bonding. Int J Adhes Adhes 1993; 13(3): 151–156.
57. Ageorges C, Ye L, Hou M, Advances in fusion bonding techniques for joining thermoplastic matrix composites: a review. Compos A Appl Sci Manuf 2001; 32(6): 839–857.
58. Haslam EB. Development of bonding methods and energy absorption of sandwich panels for thermoplastic advanced composites. Master thesis, University of Utah, USA, 2012.
59. 3M-Aerospace and Aircraft Maintenance Department, 3M Scotch-WeldTM structural adhesive film AF 163-2 technical datasheet, 2009.
60. Ourahmoune R, Salvia M, Mathia T, et al. Effect of sandblasting substrate treatment on single lap shear strength of adhesively bonded PEEK and its composites. In: ICCM-18, Jeju Island, Korea, 2011.
61. Hellmann H, Krieger R. Microwave-activatable hot-melt adhesive. Patent US4906497A, USA, 1990.
62. Ganesan K, Karthik R, Chongchen X. Development and characterization of an all-olefin thermoplastic sandwich composite system. Polym Compos 2002; 23(4): 647–657.
63. Tencate. Aerospace composites – product outline aerospace interiors – Tencate Cetex System3.
64. Biron M. Thermoplastics and thermoplastic composites. Oxford: Elsevier, 2012.
65. Grewll D, Benatar A. Welding of plastics: fundamentals and new developments. Int Polym Proc 2007; 22: 43–60.
66. Grimm R. Welding process for plastics. Adv Mater Process 1995; 147: 27–30.
67. Stokes V. Joining methods for plastics and plastic composites: an overview. Polym Eng Sci 1989; 29: 1310–1324.
68. Beevers A. Welding: the way ahead for thermoplastics? Engineering 1991; 231: 11–12.
69. Wool R. Welding of polymer interfaces. Polym Eng Sci 1989; 29(19): 1340–1367.
70. Young HK, Wool R. A theory of healing at a polymer-polymer interface. Macromolecules 1983; 16: 1115–1120.
71. Akermo M, Aström BT. Modelling of compression moulding of all-thermoplastic honeycomb core sandwich components. In: 41st International SAMPE Symposium, Anaheim, USA, 24–28 March 1996, pp. 1372–1381. USA: SAMPE.
72. Dixon J. Packaging materials: 9. multilayer packaging for food and beverages. ISLI Eur Report Series 2011: 1–43.
73. Brockholm Juhl T, Bach D. Predicting the laser weldability of dissimiliar polymers. Polymer 2013; 54: 3891–3897.
74. Jabbari E, Peppas NA. A model for interdiffusion at interfaces of polymers with dissimilar physical properties. Polymer 1995; 36(3): 575–586.
75. Trende A, Aström BT, Wöginger A, et al. Modelling of heat transfer in thermoplastic composite manufacturing: double-belt press lamination. Compos A 1999; 30: 935–943.
76. Fan X, Li Y, Li J, et al. Modeling of heat conduction in thermoplastic honeycomb core/face sheet fusion bonding, Chin J Aeronaut 2009; 22: 685–690.
77. WIHAG-Composites. MonoPan® – a new innovation material technology.
78. Schmachtenberg E, Strohhäcker J. Thermoplastische Sandwichpaneele herstellen, verarbeiten und recyceln. Plastverarbeiter 2005; 56(7): 34–35.
79. Isosport-Verbundteile GmbH. Composite panels and process for manufacturing them. Patent WO9712756A1, Germany, 1996.
80. Giehl S, Mitschang P. Faserverstärkte sandwich und profilstrukturen in einem schritt. Kunststoffe 2005; 11(2005): 76–78.
81. Roch A, Huber T. Der spritzgießer kann auch leichtbau. Industrie Anzeiger 2012; 24.
82. De Groot MT. A method of producing a thermoplastic sandwich plate, Patent EP0636463A1, 1993.
83. Brambach JA. Sandwich material and the use thereof. Patent EP0313171, 1989.
84. FITS-Technology./ Technicaldata-FITS panels, www.fitstechnology.com/technicaldata.html, (accessed September 2014)
85. De Groot MT. Verfahren zur herstellung einer sandwichplatte und sandwichplatte als solche. Patent EP1874517 B1, 2011.
86. Beukers A. Low cost production technique for sandwich structures. In: The 1st core conference, Zürich, Switzerland, 20–21 October 1998.
87. Roch A, Menrath A, Huber T, Fiber-reinforced thermoplastics as sandwich construction, Kunststoffe international 2013; 10: 119–124.
88. Roch A, Huber T, Henning F, et al. LFT-foams – lightweight potential for structural components through the use of ling-glass-fiber-reinforced thermoplastic foams. In: Polymer Processing Society 29th Annual Meeting PPS29, Nürnberg, Germany, 15–19 July 2013.
89. Henning F, Kuch I. Thermoplastic sandwich structures with high content of recycled material. In: International symposium on affordable composites manufacturing, Texas, USA, 15–19 July 2013, pp. 195–205. ASC.