JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - 55
thermoplastic
Co-woven thermoplastic fabric for complex automotive parts
Pepin Associates has developed a co-woven fabric which includes both an aligned, discontinuous fibre reinforcement and a continuous thermoplastic fibre as a version of its patented DiscoTex® reinforcement fabric. The fibrous thermoplastic serves as the matrix precursor for the composite, allowing preforms to be easily formed and later consolidated with additional heat and pressure in one final step.
By
John simko DiReCtoR of Business Development pepin AssoCiAtes, inC.
T
here is growing interest in thermoplastics in the automotive and aerospace industries, among others, due to how rapidly parts may be formed with thermoplastics, and to the recyclability of these composite materials. DiscoTex-reinforced thermoplastics make it possible for even more complex parts to be formed than is practical with continuous fibre reinforcements (Figure 1). As shown in Figure 2, parts with deep curvatures can be formed using
Fig. 2: AS4/PA6 DiscoTex fabric heated and moulded into preform (left) and later consolidated (right). Each of the three plies was applied to a female tool without cutting or darting
using fibre-reinforced thermoplastics in greater volumes in recent years as larger aircraft are developed and weight savings are sought. The high strength and stiffness of many aviation-friendly thermoplastic composites using matrices such as PPS, PEI and PEEK have made these popular for use with aviation structures. Parts such as the pre-formed AS4/PA6 sine wave spar shown in Figure 3 can be
fabric and a heat source. The preform shown on the left was made by one technician locally heating the fabric to the melting point of the thermoplastic, and pressing it into a female mould. The DiscoTex fabric stretched in the direction of reinforcement after being heated, avoiding the need to cut or dart the material, thus saving time and material. This three-ply part was preformed in 30 minutes by one technician in an R&D setting. Matched metal tooling and production level assembly could reduce the time to preform to just a few minutes. Aviation manufacturers have begun
Fig. 1: Deep part made for forming trial with AS4/PA6 DiscoTex® fabric
Fig. 3: AS4/PA6 DiscoTex sine wave spar flange transition part preform (foreground). This part, once consolidated, will resemble the AS4/977-3 epoxy part shown in the background. Sine wave spars can be used to form aircraft wing and fuselage structures or support cargo decks on large rotorcraft
No75 August - September 2012
/ jec composites magazine 55
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012
Table of Contents for the Digital Edition of JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012
Cover
Edito
Point of view: prepreg
Contents
Agenda of Events
COMPANY & BUSINESS
- In Brief
- Strategy
APPLICATIONS
- Automotive
- Building & construction
MARKET
- Human resources
- Glass fibre
- Thermoset
FEATURE MARINE
- Sustainability
- Natural fibre
- Sandwich
- Lightening
- Material
- Environment
- Underwater
RESEARCH & DEVELOPMENT
- Heating
- NDT
TECHNOLOGY & INNOVATIONS
- Testing
- Thermoplastic
Index
In the world
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - Cover
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - 2
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - Edito
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - Point of view: prepreg
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - 5
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - Contents
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - 7
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - Agenda of Events
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - 9
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - Ad1
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - Ad2
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - - In Brief
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - 11
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - - Strategy
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - 13
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - - Automotive
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - 15
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - 16
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - - Building & construction
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - - Human resources
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - - Glass fibre
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - 20
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - 21
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - - Thermoset
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - 23
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - 24
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - - Sustainability
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - 26
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - 27
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - - Natural fibre
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - 29
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - - Sandwich
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - 31
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - - Lightening
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - 33
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - - Material
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - 35
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - 36
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - - Environment
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - 38
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - 39
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - - Underwater
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - 41
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - - Heating
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - 43
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - 44
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - 45
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - 46
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - 47
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - - NDT
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - 49
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - 50
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - 51
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - 52
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - - Testing
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - 54
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - - Thermoplastic
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - 56
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - Index
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - In the world
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - 59
JEC COMPOSITES MAGAZINE - Issue #75 - August/September 2012 - 60
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