Predictive Engineering Tools for Injection-molded Long-fiber Reinforced Thermoplastic Composites

National Laboratory: 
Pacific Northwest National Laboratory
Computational Tools Class: 
Materials Processing
Process-Structure
Structure-Properties
Processing/Manufacturing Class: 
Shaping and forming
Thermo-mechanical processing
Description: 

PNNL's capability allows for integrated use of state-of-the-art processes and constitutive models to calculate tensile and flexural stiffness properties of injection-molded long-fiber thermoplastic (LFT) composite components based on predicted fiber orientation and length distributions.

Capability Bounds: 

This capability uses commercial and in-house developed software to predict long glass or long carbon fiber orientation and length distribution in injection molded parts, as well as the resulting component mechanical performance.

Unique Aspects: 

Techniques have been developed, demonstrated, and validated for long glass fiber and long carbon fiber thermoplastic composites.

Availability: 

Use typically is coordinated with capability experts and via collaborative funding proposals or contracts.

Single Point of Contact: 

Name: Darrell Herling
Email: darrell.herling@pnnl.gov
Phone: 509-375-6908

References: 
  1. Nguyen BN, Bapanapalli S, Holbery JD, Smith MT, Kunc V, Frame BJ, Phelps JH, and Tucker III CL. 2008. 'Fiber Length and Orientation Distributions in Long-Fiber Injection-Molded Thermoplastics -Part I: Modeling of Microstructure and Elastic Properties.' Journal of Composite Materials, 42:1003-1029.
  2. Nguyen BN and V Kunc. 2010. 'An Elastic-Plastic Damage Model for Long-Fiber Thermoplastics.' Int. J. Damage Mech., 19:691-725.
  3. Nguyen BN, SK Bapanapalli, V Kunc, JH Phelps, and CL Tucker, III. 2009. 'Prediction of the Elastic-Plastic Stress/Strain Response for Injection-Molded Long-Fiber Thermoplastics.' Journal of Composite Materials, 43:217-246.
  4. Kunc V, BJ Frame, BN Nguyen, CL Tucker III, and G. Velez-Garcia. 2007. 'Fiber Length Distribution Measurement for Long Glass and Carbon Fiber Reinforced Injection Molded Thermoplastics.' In: Proceedings of the 7th Annual SPE Automotive Composites Conference & Exposition, Society of Plastics Engineers.
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