The behaviour of thermoplastic and thermoset carbon fibre composites subjected to low-velocity and high-velocity impact
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The behaviour of thermoplastic and thermoset carbon fibre composites subjected to low-velocity and highvelocity impact Haibao Liu1, Jun Liu1, Yuzhe Ding1, Jie Zheng2, Xiangshao Kong3, Jin Zhou4, Lee Harper5, Bamber R. K. Blackman1, Anthony J. Kinloch1,*, and John P. Dear1,*
1
Department of Mechanical Engineering, Imperial College London, London SW7 2AZ, UK The First Aircraft Institute, No.1 East Renmin Road, Yanliang District, Xi’an 710089, Shaanxi, People’s Republic of China 3 Ocean and Structural Engineering, Departments of Naval Architecture, School of Transportation, Wuhan University of Technology, Wuhan, Hubei 430063, People’s Republic of China 4 School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, People’s Republic of China 5 Composites Research Group, Faculty of Engineering, University of Nottingham, Nottingham, UK 2
Received: 30 April 2020
ABSTRACT
Accepted: 18 August 2020
The present paper describes the results from experimental and theoretical modelling studies on the behaviour of continuous carbon fibre/polymer matrix composites subjected to a relatively low-velocity or high-velocity impact, using a rigid, metallic impactor. Drop-weight and gas-gun tests are employed to conduct the low-velocity and high-velocity impact experiments, respectively. The carbon fibre composites are based upon a thermoplastic poly(ether–ether ketone) matrix (termed CF/PEEK) or a thermoset toughened epoxy matrix (termed CF/Epoxy), which has the same fibre architecture of a cross-ply [03/ 903]2s lay-up. The studies clearly reveal that the CF/PEEK composites exhibit the better impact performance. Also, at the same impact energy of 10.5 ± 0.3 J, the relatively high-velocity test at 54.4 ± 1.0 m s-1 leads to more damage in both types of composite than observed from the low-velocity test where the impactor struck the composites at 2.56 m s-1. The computationally efficient, two-dimensional, elastic, finite element model that has been developed is generally successful in capturing the essential details of the impact test and the impact damage in the composites, and has been used to predict the loading response of the composites under impact loading.
Published online: 1 September 2020
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The Author(s) 2020
Handling Editor: Avinash Dongare.
Address correspondence to E-mail: [email protected]; [email protected]
https://doi.org/10.1007/s10853-020-05133-0
15742 Introduction High-performance, continuous fibre-reinforced thermoplastic matrix composites, such as carbon fibrereinforced poly(ether–ether ketone) (CF/PEEK), are being used increasingly in the aeronautical, automotive and marine industries due to their excellent mechanical properties [1]. In particular, their high strength-to-weight ratio and high stiffness-to-weight ratio are important attributes. In addition to their good mechanical performance, these thermoplastic matrix composites also typically possess relatively low moisture uptake, high-temperature resistance and recyclability for structural components. Of particular conce
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