1. Date of download: 5/31/2016 Copyright © ASME. All rights reserved. From: Development and Validation of a Uniaxial Nonlinear Viscoelastic Viscoplastic Stress Model for a Fuel Cell Membrane J. Electrochem. En. Conv. Stor.. 2016;12(6):061011-061011-10. doi:10.1115/1.4032491 Geometry of tensile specimen Figure Legend:

2. Date of download: 5/31/2016 Copyright © ASME. All rights reserved. From: Development and Validation of a Uniaxial Nonlinear Viscoelastic Viscoplastic Stress Model for a Fuel Cell Membrane J. Electrochem. En. Conv. Stor.. 2016;12(6):061011-061011-10. doi:10.1115/1.4032491 Regions of applicability of model parameters during creep and recovery Figure Legend:

3. Date of download: 5/31/2016 Copyright © ASME. All rights reserved. From: Development and Validation of a Uniaxial Nonlinear Viscoelastic Viscoplastic Stress Model for a Fuel Cell Membrane J. Electrochem. En. Conv. Stor.. 2016;12(6):061011-061011-10. doi:10.1115/1.4032491 Graphical demonstration of time hardening Figure Legend:

4. Date of download: 5/31/2016 Copyright © ASME. All rights reserved. From: Development and Validation of a Uniaxial Nonlinear Viscoelastic Viscoplastic Stress Model for a Fuel Cell Membrane J. Electrochem. En. Conv. Stor.. 2016;12(6):061011-061011-10. doi:10.1115/1.4032491 Graphical demonstration of strain hardening Figure Legend:

5. Date of download: 5/31/2016 Copyright © ASME. All rights reserved. From: Development and Validation of a Uniaxial Nonlinear Viscoelastic Viscoplastic Stress Model for a Fuel Cell Membrane J. Electrochem. En. Conv. Stor.. 2016;12(6):061011-061011-10. doi:10.1115/1.4032491 Finite element geometry used for evaluating the constitutive model Figure Legend:

6. Date of download: 5/31/2016 Copyright © ASME. All rights reserved. From: Development and Validation of a Uniaxial Nonlinear Viscoelastic Viscoplastic Stress Model for a Fuel Cell Membrane J. Electrochem. En. Conv. Stor.. 2016;12(6):061011-061011-10. doi:10.1115/1.4032491 Constitutive model calculations and experiments for creep and recovery tests. For each stress level, the dashed-dotted line represents the average experimental response, the dashed lines represent the 95% confidence interval for the experiments, and the solid line represents the fitted model. Figure Legend:

7. Date of download: 5/31/2016 Copyright © ASME. All rights reserved. From: Development and Validation of a Uniaxial Nonlinear Viscoelastic Viscoplastic Stress Model for a Fuel Cell Membrane J. Electrochem. En. Conv. Stor.. 2016;12(6):061011-061011-10. doi:10.1115/1.4032491 Constitutive model calculations and experiments for multiple-step stress loading “profile A.” The solid line represents the predicted response with time hardening, the dashed-dotted line represents the predicted response with strain hardening, and the dashed lines represent the independent experiments. Figure Legend:

8. Date of download: 5/31/2016 Copyright © ASME. All rights reserved. From: Development and Validation of a Uniaxial Nonlinear Viscoelastic Viscoplastic Stress Model for a Fuel Cell Membrane J. Electrochem. En. Conv. Stor.. 2016;12(6):061011-061011-10. doi:10.1115/1.4032491 Constitutive model calculations and experiments for multiple-step stress loading “profile B.” The solid line represents the predicted response with time hardening, the dashed-dotted line represents the predicted response with strain hardening, and the dashed lines represent the independent experiments. Figure Legend:

9. Date of download: 5/31/2016 Copyright © ASME. All rights reserved. From: Development and Validation of a Uniaxial Nonlinear Viscoelastic Viscoplastic Stress Model for a Fuel Cell Membrane J. Electrochem. En. Conv. Stor.. 2016;12(6):061011-061011-10. doi:10.1115/1.4032491 Constitutive model calculations and experiments for 0.5%, 1%, and 3% stress relaxation. For each strain level, the solid line represents the predicted stress relaxation profile and the patterned lines represent the independent experiments. Figure Legend:

10. Date of download: 5/31/2016 Copyright © ASME. All rights reserved. From: Development and Validation of a Uniaxial Nonlinear Viscoelastic Viscoplastic Stress Model for a Fuel Cell Membrane J. Electrochem. En. Conv. Stor.. 2016;12(6):061011-061011-10. doi:10.1115/1.4032491 Constitutive model calculations and experiments for 0.01 N/min, 0.1 N/min, and 1.0 N/min force ramps. For each ramp rate, the solid line represents the predicted stress–strain curve and the patterned line represents the independent experiment. Figure Legend: