Ballistic damage in hybrid composite laminates

11th International Conference on Damage Assessment of Structures

物理学;材料科学

Phadnis, Vaibhav A^1 ; Pandya, Kedar S^2 ; Naik, Niranjan K^3 ; Roy, Anish^4 ; Silberschmidt, Vadim V.^4

Composite Centre, AMRC with Boeing, University of Sheffield, S60 5TZ, United Kingdom^1

Department of Engineering, University of Cambridge, United Kingdom^2

Aerospace Engineering Department, Indian Institute of Technology, Bombay

400076, India^3

Wolfson School of Mechanical and Manufacturing Engineering, Loughborough University, Loughborough

LE11 3TU, United Kingdom^4

关键词: Damage mechanism;    Experimental test;    Fabric-reinforced composites;    Hybrid composite laminate;    Micro-structural;    Orthotropic materials;    Stiffness degradation;    Woven fabric composites;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/628/1/012092/pdf
DOI  :  10.1088/1742-6596/628/1/012092

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Ballistic damage of hybrid woven-fabric composites made of plain-weave E-glass- fabric/epoxy and 8H satin-weave T300 carbon-fabric/epoxy is studied using a combination of experimental tests, microstructural studies and finite-element (FE) analysis. Ballistic tests were conducted with a single-stage gas gun. Fibre damage and delamination were observed to be dominating failure modes. A ply-level FE model was developed, with a fabric-reinforced ply modelled as a homogeneous orthotropic material with capacity to sustain progressive stiffness degradation due to fibre/matrix cracking, fibre breaking and plastic deformation under shear loading. Simulated damage patterns on the front and back faces of fabric-reinforced composite plates provided an insight into their damage mechanisms under ballistic loading.