Publications de Martyn Douglas Wakeman

Consolidation of net-shape random fiber thermoplastic composite preforms

Véronique Michaud, Patrick Blanchard, Simon Jespersen, Martyn Douglas Wakeman

A novel thermoplastic composite preforming process has been developed. This thermoplastic programmable powdered preforming process (TP-P4) uses commingled glass and polypropylene yarns, which are chopped to a desired length and deposited onto a vacuum scre ...

2010

Hybrid Glass Mat-reinforced Polypropylene-Montmorillonite Nanocomposites

Véronique Michaud, John Christopher Plummer, Martyn Douglas Wakeman, Sara Dalle Vacche, Chrystèle Houphouet-Boigny Favre

Polypropylene/montmorillonite (iPP/MMT) has been investigated as an alternative to isotactic polypropylene (iPP) as a matrix for glass mat thermoplastic (GMT) composites. The melt viscosity increased significantly on MMT addition, but iPP/5.9wt% MMT-based ...

2010

Flow Properties of Tailored Net-Shape Thermoplastic Composite Preforms

Véronique Michaud, Patrick Blanchard, Simon Jespersen, Martyn Douglas Wakeman

A novel thermoplastic programmable preforming process, TP-P4, has been used to manufacture preforms for non-isothermal compression molding. Commingled glass and polypropylene yarns are deposited by robot onto a vacuum screen, followed by a heat-setting ope ...

Springer Netherlands2009

Integrating life cycle costs and environmental impacts of composite rail car-bodies for a Korean train

Martyn Douglas Wakeman, Daniel Emery, Isabelle Blanc

A coupled Life Cycle Costing and life cycle assessment has been performed for car-bodies of the Korean Tilting Train eXpress (TTX) project using European and Korean databases, with the objective of assessing environmental and cost performance to aid materi ...

Springer-Verlag2009

Film stacking impregnation model for a novel net-shape thermoplastic composite preforming process

Véronique Michaud, Martyn Douglas Wakeman, Simon Jespersen

An impregnation model has been developed to evaluate the infiltration phenomena that occur during a novel near net shape preforming method. This process comprises automated deposition of thermoplastic resin and unidirectional (UD) carbon fibres to a pre-pr ...

2008

Hybrid glass fiber-reinforced thermoplastic nanocomposites

John Christopher Plummer, Chrystèle Houphouet-Boigny Favre, Martyn Douglas Wakeman

The feasibility of integrating thermoplastic isotactic polypropylene/ montmorillonite nanocomposite matrices into conventional fiber-reinforced composites has been investigated. Two basic processing routes were considered: long glass fiber (GF)-reinforced ...

2008

Optimization of hybrid thermoplastic composite structures using surrogate models and genetic algorithms

Martyn Douglas Wakeman

Using an integrated processing methodology, an injection or compression moulded thermoplastic structure can be locally reinforced, for example, with textile structures or uni-directional fibre tows. Netshape components can be produced with cycle times typi ...

2007

Towards Textile-Based Fiber Reinforced Thermoplastic Nanocomposites: Melt Spun Polypropylene-Montmorillonite Nanocomposite Fibers

John Christopher Plummer, Chrystèle Houphouet-Boigny Favre, Martyn Douglas Wakeman

The present work is aimed at assessing the feasibility of integrating thermoplastic polypropylene nanocomposite matrices into conventional fiber-reinforced composites based on hybrid textiles that incorporate both the matrix and glass-fiber yarns, in order ...

2007

Glass Fiber Reinforced Polypropylene Nanocomposites

Véronique Michaud, John Christopher Plummer, Chrystèle Houphouet-Boigny Favre, Martyn Douglas Wakeman

2007

An investigation of stamp-formed polypropylene based textile composites

Patrick Blanchard, Fabio Demarco, Martyn Douglas Wakeman

2007