The use of plastics in underhood powertrain components has grown significantly in recent years due to performance and cost issues. Component mass considerations have been the key driver for the introduction of plastics into powertrain applications but other benefits, including noise reduction and overall engine efficiency, have been demonstrated as well. Process flexibility, including the ability to combine multiple parts into a single structure, is another advantage of plastics. The materials that have seen the most use are glass-filled thermoplastics, which have been developed for a variety of applications from intake manifolds to engine covers. These compounds have been heavily promoted by resin suppliers and custom injection molding companies for the advantages previously described, as well as their ability to be recycled. Thermoset composites such as bulk molding compound (BMC) and sheet molding compound (SMC) have also seen some success in these areas, but have been hampered by their thermosetting chemistries An alternative to conventional thermoplastic injection moldings-along fiber thermoplastic bulk molding compound (TP-BMC) is poised for adoption in powertrain components. IBIS Associates has performed an economic evaluation of the cost of making representative powertrain components with long fiber thermoplastic composites. Using a methodology called Technical Cost Modeling, the application areas where long fiber thermoplastic composites have a cost advantage over conventional thermoplastics and thermosets are described. The quantitative results defining the cost advantage as well as input assumptions that lead to these conclusions are provided.
Economic analysis of long fiber composite powertrain applications
Wirtschaftliche Analyse von faserverstärkten Verbundwerkstoffen bei Antriebssystemen
2000
5 Seiten, 5 Bilder
Conference paper
English
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