Study on impact damage tolerance of scarf bonded CFRP

Bin Liu; Fei Xu; Masanori Kikuchi; Wei Xie

doi:10.7673/j.issn.1006-2793.2015.06.023

Study on impact damage tolerance of scarf bonded CFRP

Bin Liu, Fei Xu, Masanori Kikuchi, Wei Xie

School of Aeronautics

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

6 Scopus citations

Abstract

The damage tolerance issue for structure of composite bonded repair and bonded assembly was put forward and the tension loading capacity after impact was concerned. The explicit FEM of central difference method and dechohesion element method based on D-B model were applied. Quads stress criteria and power law of energy release rate were used to confirm the damage initiation and damage final of adhesive film respectively. Then the basis tension load of undamaged scarf bonded CFRP was determined and the damage location, mode and ultimate load was pointed. In addition, the impact tolerance sensitivity among 5 typical locations was investigated. On the most sensitive location, by loading different levels of impact energy, the adhesive damage was imported into the tension model and the law of residual strength after impact was studied.

Original language	English
Pages (from-to)	870-876
Number of pages	7
Journal	Guti Huojian Jishu/Journal of Solid Rocket Technology
Volume	38
Issue number	6
DOIs	https://doi.org/10.7673/j.issn.1006-2793.2015.06.023
State	Published - 1 Dec 2015

Keywords

Bonded
CFRP
Cohesion
Damage tolerance
Impact damage
Tension after impact

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10.7673/j.issn.1006-2793.2015.06.023

Cite this

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title = "Study on impact damage tolerance of scarf bonded CFRP",

abstract = "The damage tolerance issue for structure of composite bonded repair and bonded assembly was put forward and the tension loading capacity after impact was concerned. The explicit FEM of central difference method and dechohesion element method based on D-B model were applied. Quads stress criteria and power law of energy release rate were used to confirm the damage initiation and damage final of adhesive film respectively. Then the basis tension load of undamaged scarf bonded CFRP was determined and the damage location, mode and ultimate load was pointed. In addition, the impact tolerance sensitivity among 5 typical locations was investigated. On the most sensitive location, by loading different levels of impact energy, the adhesive damage was imported into the tension model and the law of residual strength after impact was studied.",

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T1 - Study on impact damage tolerance of scarf bonded CFRP

AU - Liu, Bin

AU - Xu, Fei

AU - Kikuchi, Masanori

AU - Xie, Wei

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N2 - The damage tolerance issue for structure of composite bonded repair and bonded assembly was put forward and the tension loading capacity after impact was concerned. The explicit FEM of central difference method and dechohesion element method based on D-B model were applied. Quads stress criteria and power law of energy release rate were used to confirm the damage initiation and damage final of adhesive film respectively. Then the basis tension load of undamaged scarf bonded CFRP was determined and the damage location, mode and ultimate load was pointed. In addition, the impact tolerance sensitivity among 5 typical locations was investigated. On the most sensitive location, by loading different levels of impact energy, the adhesive damage was imported into the tension model and the law of residual strength after impact was studied.

AB - The damage tolerance issue for structure of composite bonded repair and bonded assembly was put forward and the tension loading capacity after impact was concerned. The explicit FEM of central difference method and dechohesion element method based on D-B model were applied. Quads stress criteria and power law of energy release rate were used to confirm the damage initiation and damage final of adhesive film respectively. Then the basis tension load of undamaged scarf bonded CFRP was determined and the damage location, mode and ultimate load was pointed. In addition, the impact tolerance sensitivity among 5 typical locations was investigated. On the most sensitive location, by loading different levels of impact energy, the adhesive damage was imported into the tension model and the law of residual strength after impact was studied.

KW - Bonded

KW - CFRP

KW - Cohesion

KW - Damage tolerance

KW - Impact damage

KW - Tension after impact

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Study on impact damage tolerance of scarf bonded CFRP

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