Impact Characterization of Polyurethane Composites Manufactured Using Vacuum Assisted Resin Transfer Molding
Glass fiber reinforced composites are finding various applications due to their high specific stiffness/strength, and corrosion resistance. Vacuum assisted resin transfer molding (VARTM) is one of the commonly used low cost composite manufacturing processes. Polyurethane (PU) resin system has been observed to have better mechanical properties and higher impact strength when compared to conventional resin systems such as polyester and vinyl ester. Until recently, PU could not be used in composite manufacturing processes such as VARTM due to its low pot life. In the present work, a thermoset PU resin systems with longer pot life developed by Bayer MaterialScience is used. Glass fiber reinforced PU composites have been manufactured using one part PU resin system. Performance evaluation was conducted on these composites using tensile, flexure and impact tests. Finite element simulation was conducted to validate the mechanical tests. Results showed that PU composites manufactured using novel thermoset PU resins and VARTM process will have significant applications in infrastructure and automotive industries.
M. Mohamed et al., "Impact Characterization of Polyurethane Composites Manufactured Using Vacuum Assisted Resin Transfer Molding," ASME proceedings: Design, Materials, and Manufacturing, American Society of Mechanical Engineers (ASME), Jan 2012.
The definitive version is available at http://dx.doi.org/10.1115/IMECE2012-88267
ASME 2012 International Mechanical Engineering Congress and Exposition
Mechanical and Aerospace Engineering
Keywords and Phrases
Composite Materials; Vacuum; Urethrane Elastomers; Resins; Transfer Molding
Article - Conference proceedings
© 2012 American Society of Mechanical Engineers (ASME), All rights reserved.