Understanding creep behavior of carbon fiber/epoxy interface via molecular dynamics simulation

Lik ho Tam; Ruidong Wu; Marc A.Ntjam Minkeng; Jinqiao Jiang; Ao Zhou; Huali Hao; Zechuan Yu; Chao Wu

doi:10.1080/15376494.2022.2088906

Understanding creep behavior of carbon fiber/epoxy interface via molecular dynamics simulation

Lik ho Tam
, Ruidong Wu
, Marc A.Ntjam Minkeng
, Jinqiao Jiang
, Ao Zhou
, Huali Hao
, Zechuan Yu^*
, Chao Wu^*

^*Corresponding author for this work

Beihang University
Harbin Institute of Technology Shenzhen
Wuhan University
Wuhan University of Technology
Imperial College London

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

This work focuses on molecular creep behavior of carbon fiber/epoxy interface under sustained loads at different levels. Threshold stress and energy barrier for the onset of interfacial creep failure under peeling loads are found greater than those under shearing. Microstructural changes during creep show that the epoxy has a large and irreversible deformation under peeling loads, denoted as a yielding process in the peeling case. The yielding process in the peeling case dissipates the applied energy in the epoxy structure. Therefore, the interface shows a stronger resistance to the peeling and the shearing is more critical during composite failure.

Original language	English
Pages (from-to)	4052-4064
Number of pages	13
Journal	Mechanics of Advanced Materials and Structures
Volume	30
Issue number	19
DOIs	https://doi.org/10.1080/15376494.2022.2088906
State	Published - 2023
Externally published	Yes

Keywords

Carbon fiber-reinforced composites
interfacial creep
molecular dynamics simulation
peeling
shearing
sustained loads

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10.1080/15376494.2022.2088906

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title = "Understanding creep behavior of carbon fiber/epoxy interface via molecular dynamics simulation",

abstract = "This work focuses on molecular creep behavior of carbon fiber/epoxy interface under sustained loads at different levels. Threshold stress and energy barrier for the onset of interfacial creep failure under peeling loads are found greater than those under shearing. Microstructural changes during creep show that the epoxy has a large and irreversible deformation under peeling loads, denoted as a yielding process in the peeling case. The yielding process in the peeling case dissipates the applied energy in the epoxy structure. Therefore, the interface shows a stronger resistance to the peeling and the shearing is more critical during composite failure.",

keywords = "Carbon fiber-reinforced composites, interfacial creep, molecular dynamics simulation, peeling, shearing, sustained loads",

author = "Tam, \{Lik ho\} and Ruidong Wu and Minkeng, \{Marc A.Ntjam\} and Jinqiao Jiang and Ao Zhou and Huali Hao and Zechuan Yu and Chao Wu",

note = "Publisher Copyright: {\textcopyright} 2022 Taylor \& Francis Group, LLC.",

year = "2023",

doi = "10.1080/15376494.2022.2088906",

language = "英语",

volume = "30",

pages = "4052--4064",

journal = "Mechanics of Advanced Materials and Structures",

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TY - JOUR

T1 - Understanding creep behavior of carbon fiber/epoxy interface via molecular dynamics simulation

AU - Tam, Lik ho

AU - Wu, Ruidong

AU - Minkeng, Marc A.Ntjam

AU - Jiang, Jinqiao

AU - Zhou, Ao

AU - Hao, Huali

AU - Yu, Zechuan

AU - Wu, Chao

PY - 2023

Y1 - 2023

N2 - This work focuses on molecular creep behavior of carbon fiber/epoxy interface under sustained loads at different levels. Threshold stress and energy barrier for the onset of interfacial creep failure under peeling loads are found greater than those under shearing. Microstructural changes during creep show that the epoxy has a large and irreversible deformation under peeling loads, denoted as a yielding process in the peeling case. The yielding process in the peeling case dissipates the applied energy in the epoxy structure. Therefore, the interface shows a stronger resistance to the peeling and the shearing is more critical during composite failure.

AB - This work focuses on molecular creep behavior of carbon fiber/epoxy interface under sustained loads at different levels. Threshold stress and energy barrier for the onset of interfacial creep failure under peeling loads are found greater than those under shearing. Microstructural changes during creep show that the epoxy has a large and irreversible deformation under peeling loads, denoted as a yielding process in the peeling case. The yielding process in the peeling case dissipates the applied energy in the epoxy structure. Therefore, the interface shows a stronger resistance to the peeling and the shearing is more critical during composite failure.

KW - Carbon fiber-reinforced composites

KW - interfacial creep

KW - molecular dynamics simulation

KW - peeling

KW - shearing

KW - sustained loads

UR - https://www.scopus.com/pages/publications/85132874203

U2 - 10.1080/15376494.2022.2088906

DO - 10.1080/15376494.2022.2088906

M3 - 文章

AN - SCOPUS:85132874203

SN - 1537-6494

VL - 30

SP - 4052

EP - 4064

JO - Mechanics of Advanced Materials and Structures

JF - Mechanics of Advanced Materials and Structures

IS - 19

ER -

Understanding creep behavior of carbon fiber/epoxy interface via molecular dynamics simulation

Abstract

Keywords

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