TY - GEN
T1 - Stress and pressure dependent thermo-oxidation response of poly (bis)maleimide resins
AU - An, Nan
AU - Tandon, G. P.
AU - Hall, R.
AU - Pochiraju, K.
PY - 2014
Y1 - 2014
N2 - Thermo-oxidative degradation in high temperature resins can be accelerated by increased oxygen pressure and the stress in the material. While the oxygen pressure increases the adsorbed oxygen concentration on the surface, stress affects the diffusivity. We describe a comprehensive sorption, oxidation (diffusion-reaction) and stress evolution model for polymers and composites and apply the model for oxidation growth prediction in (bis)maleimide resins. The model framework uses a pressure-dependent boundary sorption model and stress-dependent diffusion model. Evolution of thermo-oxidative degradation in a commercially available resin and composite system is experimentally characterized and the results are used for identifying model parameters and model validation. The key contributions are the characterization and validation of a single parameter for stress-diffusion coupling. The parameter value is identified at one stress-level and the oxidation behavior at higher level is simulated. The results show that the effect of substrate stress and the oxygen pressure can be effectively simulated using the developed framework.
AB - Thermo-oxidative degradation in high temperature resins can be accelerated by increased oxygen pressure and the stress in the material. While the oxygen pressure increases the adsorbed oxygen concentration on the surface, stress affects the diffusivity. We describe a comprehensive sorption, oxidation (diffusion-reaction) and stress evolution model for polymers and composites and apply the model for oxidation growth prediction in (bis)maleimide resins. The model framework uses a pressure-dependent boundary sorption model and stress-dependent diffusion model. Evolution of thermo-oxidative degradation in a commercially available resin and composite system is experimentally characterized and the results are used for identifying model parameters and model validation. The key contributions are the characterization and validation of a single parameter for stress-diffusion coupling. The parameter value is identified at one stress-level and the oxidation behavior at higher level is simulated. The results show that the effect of substrate stress and the oxygen pressure can be effectively simulated using the developed framework.
KW - Bismaleimide
KW - Material behavior parameters
KW - Oxidation
KW - Pressure-accelerated
KW - Stress-accelerated
UR - http://www.scopus.com/inward/record.url?scp=84886832876&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84886832876&partnerID=8YFLogxK
U2 - 10.1007/978-3-319-00852-3_14
DO - 10.1007/978-3-319-00852-3_14
M3 - Conference contribution
AN - SCOPUS:84886832876
SN - 9783319008516
T3 - Conference Proceedings of the Society for Experimental Mechanics Series
SP - 129
EP - 137
BT - Challenges in Mechanics of Time-Dependent Materials and Processes in Conventional and Multifunctional Materials - Proceedings of the 2013 Annual Conference on Experimental and Applied Mechanics
T2 - 2013 Annual Conference on Experimental and Applied Mechanics
Y2 - 3 June 2013 through 5 June 2013
ER -