Strain-rate and off-axis loading effects on the fibre compression strength of CFRP laminates: Experiments and constitutive modelling
Source abstract
Abstract
Abstract A series of dynamic longitudinal compression tests have been performed on cross-ply IM7/8552 specimens cut at different off-axis angles to produce different combinations of compression and shear stresses. Together with results from previous quasi-static tests of the same kind, quasi-static and dynamic fibre kinking failure envelopes have been obtained using classical laminate theory. This new experimental data has been compared against predictions from the leading fibre kinking theories, made rate-dependent by using rate-dependent in-plane shear properties, and show that, while they can accurately predict the effects of strain rate on the uniaxial compression strength, they are unable to capture the effects of shear, neither at quasi-static nor dynamic rates. Instead, a simpler more phenomenological approach is proposed to predict the rate-dependent fibre kinking strength of FRP laminates under multi-axial loads until the micromechanics can be more accurately described.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Mechanical Behavior of Composites · Structural Response to Dynamic Loads · Structural Analysis and Optimization
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (34)
Show source-provided references
1. Compressive failure of fibre composites10.1016/0022-5096(93)90068-Q ↗
2. Compressive failure of fiber composites10.1016/S0065-2156(08)70385-5 ↗
3. Pinho · 2005
4. Physically-based failure models and criteria for laminated fibre-reinforced composites . Part I: Development10.1016/j.compositesa.2005.04.016 ↗
5. A study on the longitudinal compression strength of fibre reinforced composites under uniaxial and off-axis loads using cross-ply laminate specimens10.1016/j.compositesa.2019.03.034 ↗
6. Compressive failure mechanism and strength of unidirectional thermoplastic composites based on modified kink band model10.1016/j.compositesa.2016.11.018 ↗
7. A dynamic test methodology for analyzing the strain-rate effect on the longitudinal compressive behavior of fiber-reinforced composites10.1016/j.compstruct.2017.08.048 ↗
8. Testing of angle-ply laminates to obtain unidirectional composite compression strengths10.1016/S1359-835X(96)00138-8 ↗
9. Hexcel HexPly 8552 Data Sheet. n.d.
10. Measurement of small angle fiber misalignments in continuous fiber composites10.1016/0266-3538(87)90016-9 ↗
11. NIH Image to ImageJ: 25 years of image analysis10.1038/nmeth.2089 ↗
12. 2018
13. Numerical reconstruction of graphite/epoxy composite microstructure based on sub-micron resolution X-ray computed tomography10.1016/j.compscitech.2014.10.017 ↗
14. X-ray computed tomography study of kink bands in unidirectional composites10.1016/j.compstruct.2016.10.124 ↗
15. Effect of strain rate and fibre rotation on the in-plane shear response of ±45° laminates in tension and compression tests10.1016/j.compscitech.2016.09.016 ↗
16. Measurements of the effects of pure and salt water absorption on the rate-dependent response of an epoxy matrix10.1016/j.compositesb.2018.03.044 ↗
17. Failure of compression-loaded multidirectional composite laminates10.2514/3.10255 ↗
18. Biaxial test results for strength and deformation of a range of E-glass and carbon fibre reinforced composite laminates: failure exercise benchmark data10.1016/S0266-3538(02)00093-3 ↗
19. Pinho ST, Dávila CG, Camanho PP, Iannucci L, Robinson P. Failure Models and Criteria for FRP under In-Plane or Three-Dimensional Stress States Including Shear Non-linearity. Nasa/Tm-2005-213530 2005:68. doi:NASA/TM-2005-213530.
20. Körber · 2010
21. Constitutive modelling of composite materials under impact loading
22. Experimental characterisation and constitutive modelling of RTM-6 resin under impact loading10.1016/j.polymer.2008.04.018 ↗
23. High strain rate characterisation of unidirectional carbon-epoxy IM7-8552 in transverse compression and in-plane shear using digital image correlation10.1016/j.mechmat.2010.09.003 ↗
24. Ramberg · 1943
25. Rosen · 1965 · 37
26. Fracture of composites10.1016/B978-0-12-341801-2.50007-2 ↗
27. Compressive failure of fiber composites: the roles of multiaxial loading and creep10.1115/1.2904223 ↗
28. Computational micromechanics of fiber kinking in unidirectional FRP under different environmental conditions10.1016/j.compscitech.2017.03.014 ↗
29. Effect of matrix damage on compressive strength in the fiber direction for laminated composites10.1016/j.compositesa.2016.12.012 ↗
30. Treutenaere · 2016
31. Comparative in-plane shear behaviour of long-carbon-fibre composites with thermoset or thermoplastic matrix10.1016/0266-3538(94)90176-7 ↗
32. A Puck-based localisation plane theory for rate- and pressure-dependent constitutive modelling of unidirectional fibre-reinforced polymers10.1016/j.compstruct.2017.09.088 ↗
33. Failure analysis of FRP laminates by means of physically based phenomenological models10.1016/S0266-3538(96)00140-6 ↗
34. On the rate-dependent plasticity modelling of unidirectional fibre-reinforced polymeric matrix composites10.1051/epjconf/201818301055 ↗