1. Date of download: 3/8/2018
Copyright © ASME. All rights reserved.
From: Prediction of Asymmetric Yield Strengths of Polymeric Materials at Tension and Compression Using Spherical Indentation
J. Eng. Mater. Technol. 2017;139(2): doi: /
Figure Legend:
True stress-true strain curves in uniaxial tension and compression test for polycarbonate (PC) at strain rate of 10−3 s−1

2. Date of download: 3/8/2018
Copyright © ASME. All rights reserved.
From: Prediction of Asymmetric Yield Strengths of Polymeric Materials at Tension and Compression Using Spherical Indentation
J. Eng. Mater. Technol. 2017;139(2): doi: /
Figure Legend:
Relationship between yield strength and strain rate obtained from tension and compression tests

3. Date of download: 3/8/2018
Copyright © ASME. All rights reserved.
From: Prediction of Asymmetric Yield Strengths of Polymeric Materials at Tension and Compression Using Spherical Indentation
J. Eng. Mater. Technol. 2017;139(2): doi: /
Figure Legend:
Indentation curves of shallow indentation using spherical indenter R = 500 μm for PC (a) and PMMA (b)

4. Date of download: 3/8/2018
Copyright © ASME. All rights reserved.
From: Prediction of Asymmetric Yield Strengths of Polymeric Materials at Tension and Compression Using Spherical Indentation
J. Eng. Mater. Technol. 2017;139(2): doi: /
Figure Legend:
Calculated Young's modulus with respected to indentation depth during loading process for PC (a) and PMMA (b)

5. Date of download: 3/8/2018
Copyright © ASME. All rights reserved.
From: Prediction of Asymmetric Yield Strengths of Polymeric Materials at Tension and Compression Using Spherical Indentation
J. Eng. Mater. Technol. 2017;139(2): doi: /
Figure Legend:
Relationships between indentation force and depth h3/2 for PC (a) and PMMA (b)

6. Date of download: 3/8/2018
Copyright © ASME. All rights reserved.
From: Prediction of Asymmetric Yield Strengths of Polymeric Materials at Tension and Compression Using Spherical Indentation
J. Eng. Mater. Technol. 2017;139(2): doi: /
Figure Legend:
Two-dimensional model of FEM computation for spherical indentation

7. Date of download: 3/8/2018
Copyright © ASME. All rights reserved.
From: Prediction of Asymmetric Yield Strengths of Polymeric Materials at Tension and Compression Using Spherical Indentation
J. Eng. Mater. Technol. 2017;139(2): doi: /
Figure Legend:
Examples of indentation curve, in which it investigates the effect of the yield strength σY (a) and the parameter α (b)

8. Date of download: 3/8/2018
Copyright © ASME. All rights reserved.
From: Prediction of Asymmetric Yield Strengths of Polymeric Materials at Tension and Compression Using Spherical Indentation
J. Eng. Mater. Technol. 2017;139(2): doi: /
Figure Legend:
Relationship between (F(h/R=0.5)/σY⋅h2) and (E∗/σr) at each parameter α

9. Date of download: 3/8/2018
Copyright © ASME. All rights reserved.
From: Prediction of Asymmetric Yield Strengths of Polymeric Materials at Tension and Compression Using Spherical Indentation
J. Eng. Mater. Technol. 2017;139(2): doi: /
Figure Legend:
Contour map of error distribution for σY (a) and differences (input value—estimation value) of parameter α (b)

10. Date of download: 3/8/2018
Copyright © ASME. All rights reserved.
From: Prediction of Asymmetric Yield Strengths of Polymeric Materials at Tension and Compression Using Spherical Indentation
J. Eng. Mater. Technol. 2017;139(2): doi: /
Figure Legend:
Comparison between the input value and the estimation from reverse analysis for representative materials for sensitivity analysis

11. Date of download: 3/8/2018
Copyright © ASME. All rights reserved.
From: Prediction of Asymmetric Yield Strengths of Polymeric Materials at Tension and Compression Using Spherical Indentation
J. Eng. Mater. Technol. 2017;139(2): doi: /
Figure Legend:
Indentation curves of deep indentation test using spherical indenter R = 20 μm for PC (a) and PMMA (b)

12. Date of download: 3/8/2018
Copyright © ASME. All rights reserved.
From: Prediction of Asymmetric Yield Strengths of Polymeric Materials at Tension and Compression Using Spherical Indentation
J. Eng. Mater. Technol. 2017;139(2): doi: /
Figure Legend:
Relationships between the yield strength σY and parameter α, which are from theory (Eq. (6)) and experimental estimation from Eq. (12) for PC (a) and PMMA (b).

13. Date of download: 3/8/2018
Copyright © ASME. All rights reserved.
From: Prediction of Asymmetric Yield Strengths of Polymeric Materials at Tension and Compression Using Spherical Indentation
J. Eng. Mater. Technol. 2017;139(2): doi: /
Figure Legend:
Changes in coefficients (A1, A2, and A3) in Table 2 with respect to parameter α