Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Bayesian inference of fiber orientation and polymer properties in short fiber-reinforced polymer composites

Journal Article · · Composites Science and Technology

Herein we present a Bayesian methodology to infer the elastic modulus of the constituent polymer and the fiber orientation state in a short-fiber reinforced polymer composite (SFRP). The properties are inversely determined using only a few experimental tests. Developing composite manufacturing digital twins for SFRP composite processes, including injection molding and extrusion deposition additive manufacturing (EDAM) requires extensive experimental material characterization. In particular, characterizing the composite mechanical properties is time consuming and therefore, micromechanics models are used to fully identify the elasticity tensor. Hence, the objective of this paper is to infer the fiber orientation and the effective polymer modulus and therefore, identify the elasticity tensor of the composite with minimal experimental tests. To that end, we develop a hierarchical Bayesian model coupled with a micromechanics model to infer the fiber orientation and the polymer elastic modulus simultaneously which we then use to estimate the composite elasticity tensor. We motivate and demonstrate the methodology for the EDAM process but the development is such that it is applicable to other SFRP composites processed via other methods. Our results demonstrate that the approach provides a reliable framework for the inference, with as few as three tensile tests, while accounting for epistemic and aleatory uncertainty. Posterior predictive checks show that the model is able to recreate the experimental data well. The ability of the Bayesian approach to calibrate the material properties and its associated uncertainties, make it a promising tool for enabling a probabilistic predictive framework for composites manufacturing digital twins.

Research Organization:
Collaborative Composite Solutions Corporation, Knoxville, TN (United States); Institute for Advanced Composites Manufacturing Innovation (IACMI), Knoxville, TN (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
EE0006926
OSTI ID:
1977022
Journal Information:
Composites Science and Technology, Journal Name: Composites Science and Technology Journal Issue: C Vol. 228; ISSN 0266-3538
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (41)

Fiber orientation and mechanical properties of short-fiber-reinforced injection-molded composites: Simulated and experimental results journal October 1993
Stereological measurement and error estimates for three-dimensional fiber orientation journal February 1992
Gaussian Processes in Machine Learning book January 2004
On the condition number of covariance matrices in kriging, estimation, and simulation of random fields journal January 1994
A study on fiber orientation influence on the mechanical response of a short fiber composite structure journal July 2015
Bayesian inference to identify parameters in viscoelasticity journal August 2017
Bayesian Identification of Elastic Constants in Multi-Directional Laminate from Moiré Interferometry Displacement Fields journal September 2012
A Tutorial on Bayesian Inference to Identify Material Parameters in Solid Mechanics journal January 2019
Average stress in matrix and average elastic energy of materials with misfitting inclusions journal May 1973
On diagonal and elastic symmetry of the approximate effective stiffness tensor of heterogeneous media journal January 1991
Parameter estimation of orthotropic plates by Bayesian sensitivity analysis journal January 1996
A Bayesian approach to selecting hyperelastic constitutive models of soft tissue journal July 2015
Bayesian inference of non-linear multiscale model parameters accelerated by a Deep Neural Network journal March 2020
Computational homogenization of sheet molding compound composites based on high fidelity representative volume elements journal March 2020
Particle simulation for predicting fiber motion in injection molding of short-fiber-reinforced composites journal October 2012
Effects of fiber orientation and anisotropy on tensile strength and elastic modulus of short fiber reinforced polymer composites journal April 2015
Mean-field homogenization of multi-phase thermo-elastic composites: a general framework and its validation journal August 2004
Comparison of several closure approximations for evaluating the thermoelastic properties of an injection molded short-fiber composite journal June 2007
Prediction of effective elastic properties of fiber reinforced composites using fiber orientation tensors journal June 2016
Numerical prediction of fiber orientation and mechanical performance for short/long glass and carbon fiber-reinforced composites journal May 2017
Estimation of elastic constants of thick laminated plates within a Bayesian framework journal October 2007
Bayesian identification of Mean-Field Homogenization model parameters and uncertain matrix behavior in non-aligned short fiber composites journal July 2019
Uncertainty quantification and model validation of fatigue crack growth prediction journal May 2011
Micromechanical modeling and computation of elasto-plastic materials reinforced with distributed-orientation fibers journal October 2005
Gaussian processes with built-in dimensionality reduction: Applications to high-dimensional uncertainty propagation journal September 2016
Predicting the effect of aging and defect size on the stress profiles of skin from advancement, rotation and transposition flap surgeries journal April 2019
Identifying elastoplastic parameters with Bayes’ theorem considering output error, input error and model uncertainty journal January 2019
A Bayesian framework for the calibration of cohesive zone models journal January 2017
Algorithms for Generating Maximin Latin Hypercube and Orthogonal Designs journal March 2011
Optical imaging in medicine: II. Modelling and reconstruction journal May 1997
Optical tomography in medical imaging journal January 1999
Mechanical characteristics of short fiber composite samples located behind circle, rectangle, triangle obstacles journal May 2020
The influence of the weld line location on the mechanical characteristics of lugs from short fibers reinforced composite material journal May 2020
The Use of Tensors to Describe and Predict Fiber Orientation in Short Fiber Composites journal November 1987
Orthotropic closure approximations for flow‐induced fiber orientation journal November 1995
A Numerical Approach for Injection Molding of Short-Fiber-Reinforced Plastics Using a Particle Method journal January 2011
Micromechanics Prediction of the Shear Strength of Carbon Fiber/Epoxy Matrix Composites: The Influence of the Matrix and Interface Strengths journal April 1992
Review on process model, structure-property relationship of composites and future needs in fused filament fabrication journal June 2020
The importance of carbon fiber to polymer additive manufacturing journal September 2014
Measuring Fiber Orientation of Elliptical Fibers from Optical Microscopy journal March 2019
Probabilistic programming in Python using PyMC3 journal January 2016

Similar Records

A machine learning approach to determine the elastic properties of printed fiber-reinforced polymers
Journal Article · Tue Jan 25 23:00:00 EST 2022 · Composites Science and Technology · OSTI ID:1977021

Experimental characterization of damping properties of coated fiber polymer composites
Conference · Tue Dec 30 23:00:00 EST 1997 · OSTI ID:577581

Prediction of Elastic Properties for Curved Fiber Polymer Composites
Journal Article · Thu May 01 00:00:00 EDT 2008 · Polymer Composites, 29(5):544-550 · OSTI ID:932416