Investigation on creep mechanism of CF/PEEK composite material using molecular dynamics
Carbon fiber/Poly ether ether ketone (CF/PEEK) subjects to external loads during service life, high bonding quality of the interface is the key to structural integrity. In order to control the creep slippage of CF/PEEK, explaining the interfacial creep mechanism details are essential. This paper con...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-12-01
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| Series: | Polymer Testing |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0142941823003379 |
| _version_ | 1797390556963274752 |
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| author | Wenzhao Li Yibo Li Minghui Huang |
| author_facet | Wenzhao Li Yibo Li Minghui Huang |
| author_sort | Wenzhao Li |
| collection | DOAJ |
| description | Carbon fiber/Poly ether ether ketone (CF/PEEK) subjects to external loads during service life, high bonding quality of the interface is the key to structural integrity. In order to control the creep slippage of CF/PEEK, explaining the interfacial creep mechanism details are essential. This paper constructs an intercalation model for the CF/PEEK molecular interface and uses molecular dynamics (MD) simulation to demonstrate the evolution mechanism of the interface under different load levels. To verify the effectiveness of the model, the structural morphology, glass-transition temperature, and density of the molecular model were compared with experimental measurements. In terms of interface shear creep, stage Ш creep transitioned from constant to accelerated, the creep curves and corresponding interface microstructure under different stress states were simulated by MD. At the same time, the sliding and debonding processes were explained from an energy perspective. Furthermore, a creep constitutive model was proposed to fit the molecular scale. This study comprehensively interprets the shear creep behavior of the CF/PEEK interface from simulation to constitution. |
| first_indexed | 2024-03-08T23:13:33Z |
| format | Article |
| id | doaj.art-8315102beb0f4e018d810332af048ae4 |
| institution | Directory Open Access Journal |
| issn | 0142-9418 |
| language | English |
| last_indexed | 2024-03-08T23:13:33Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Polymer Testing |
| spelling | doaj.art-8315102beb0f4e018d810332af048ae42023-12-15T07:22:19ZengElsevierPolymer Testing0142-94182023-12-01129108257Investigation on creep mechanism of CF/PEEK composite material using molecular dynamicsWenzhao Li0Yibo Li1Minghui Huang2College of Mechanical and Electrical Engineering, Central South University, Changsha, Hunan, 410083, ChinaCollege of Mechanical and Electrical Engineering, Central South University, Changsha, Hunan, 410083, China; Light Alloy Research Institute, Central South University, Changsha, Hunan, 410012, China; Corresponding author. College of Mechanical and Electrical Engineering, Central South University, Changsha, Hunan, 410083, China.College of Mechanical and Electrical Engineering, Central South University, Changsha, Hunan, 410083, China; Light Alloy Research Institute, Central South University, Changsha, Hunan, 410012, ChinaCarbon fiber/Poly ether ether ketone (CF/PEEK) subjects to external loads during service life, high bonding quality of the interface is the key to structural integrity. In order to control the creep slippage of CF/PEEK, explaining the interfacial creep mechanism details are essential. This paper constructs an intercalation model for the CF/PEEK molecular interface and uses molecular dynamics (MD) simulation to demonstrate the evolution mechanism of the interface under different load levels. To verify the effectiveness of the model, the structural morphology, glass-transition temperature, and density of the molecular model were compared with experimental measurements. In terms of interface shear creep, stage Ш creep transitioned from constant to accelerated, the creep curves and corresponding interface microstructure under different stress states were simulated by MD. At the same time, the sliding and debonding processes were explained from an energy perspective. Furthermore, a creep constitutive model was proposed to fit the molecular scale. This study comprehensively interprets the shear creep behavior of the CF/PEEK interface from simulation to constitution.http://www.sciencedirect.com/science/article/pii/S0142941823003379CF/PEEK interfaceMolecular dynamicsCreep mechanism |
| spellingShingle | Wenzhao Li Yibo Li Minghui Huang Investigation on creep mechanism of CF/PEEK composite material using molecular dynamics Polymer Testing CF/PEEK interface Molecular dynamics Creep mechanism |
| title | Investigation on creep mechanism of CF/PEEK composite material using molecular dynamics |
| title_full | Investigation on creep mechanism of CF/PEEK composite material using molecular dynamics |
| title_fullStr | Investigation on creep mechanism of CF/PEEK composite material using molecular dynamics |
| title_full_unstemmed | Investigation on creep mechanism of CF/PEEK composite material using molecular dynamics |
| title_short | Investigation on creep mechanism of CF/PEEK composite material using molecular dynamics |
| title_sort | investigation on creep mechanism of cf peek composite material using molecular dynamics |
| topic | CF/PEEK interface Molecular dynamics Creep mechanism |
| url | http://www.sciencedirect.com/science/article/pii/S0142941823003379 |
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