Imperial College London
Alternate

John P. Dear FREng

Faculty of Engineering, Department of Mechanical Engineering

Professor of Mechanical Engineering
 
 
 
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Contact

 

j.dear Website

 
 
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Location

 

520City and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Liu:2023:10.1016/j.compscitech.2023.109917,
author = {Liu, H and Liu, J and Hall, ZEC and Brooks, RA and Crocker, JWM and Joesbury, AM and Harper, LT and Blackman, BRK and Kinloch, AJ and Dear, JP},
doi = {10.1016/j.compscitech.2023.109917},
journal = {Composites Science and Technology},
pages = {1--22},
title = {Modelling the effects of patch-plug configuration on the impact performance of patch-repaired composite laminates},
url = {http://dx.doi.org/10.1016/j.compscitech.2023.109917},
volume = {233},
year = {2023}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The patch-plug configuration has been widely used to repair composite structures and restore the structural integrity of damaged composites. In the present research, single-sided CFRP patch-repaired panels, with different patch-plug configurations, are prepared. This is where a circular-shaped damaged area has been removed and a CFRP patch has been adhesively-bonded onto the panel. In some cases, a CFRP plug is inserted into the hole, caused by removal of the damaged area, before the patch is applied. Such patch-repaired panels, and the pristine CFRP panel, are subjected to a low-velocity impact at an energy of 7.5 J. These impacted pristine and repaired panels are then examined using ultrasonic C-scan and optical microscopy to inspect the impact-associated permanent indentation, interlaminar and intralaminar damage. A finite element analysis (FEA) model, which significantly extends a previously validated elastic-plastic (E-P) numerical damage model, has been developed to predict the impact behaviour of the pristine CFRP panel and the various designs of patch-repaired CFRP panels. The comparison between the experimental and numerical results for all the studied cases shows the maximum deviations for the loading response and the damage area are 12% and 15%, respectively. The good agreement between the experimentally-measured impact properties and those predicted using the numerical model demonstrates that the model is a useful design tool.
AU  - Liu,H
AU  - Liu,J
AU  - Hall,ZEC
AU  - Brooks,RA
AU  - Crocker,JWM
AU  - Joesbury,AM
AU  - Harper,LT
AU  - Blackman,BRK
AU  - Kinloch,AJ
AU  - Dear,JP
DO  - 10.1016/j.compscitech.2023.109917
EP  - 22
PY  - 2023///
SN  - 0266-3538
SP  - 1
TI  - Modelling the effects of patch-plug configuration on the impact performance of patch-repaired composite laminates
T2  - Composites Science and Technology
UR  - http://dx.doi.org/10.1016/j.compscitech.2023.109917
UR  - https://www.sciencedirect.com/science/article/pii/S0266353823000106?via%3Dihub
UR  - http://hdl.handle.net/10044/1/101996
VL  - 233
ER  -
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