Multi-scale characterization and modelling of the transverse compression response of unidirectional carbon fiber reinforced epoxy
Source abstract
Abstract
Abstract Thick unidirectional fiber reinforced RTM6 epoxy resin specimens were processed by resin transfer molding and tested in transverse compression. Homogenized response from micromechanical analyses on representative volume elements , using a constitutive model for the matrix identified and validated on bulk RTM6 specimens, were assessed towards the experimental results. Large discrepancies were observed in terms of failure initiation and non-linearity in the stress-strain response . Regarding the interfaces, the use of frictional cohesive elements greatly enhanced the damage tolerance of the RVEs to interface damage. Regarding the matrix behavior, in situ tests on UD specimens and microscale digital image correlation highlighted significant gaps between the numerical and experimental strain fields. Excessive strain localization in the simulations is believed to be the main reason for these differences. This study raises fundamental questions on the degree of confidence that can be granted to constitutive models validated at the macroscale to predict strain field at the microscale.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Mechanical Behavior of Composites · Fiber-reinforced polymer composites · Mechanical stress and fatigue analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (67)
Show source-provided references
1. Glass fibre sizing/matrix interphase formation in liquid composite moulding: effects on fibre/matrix adhesion and mechanical properties10.1016/0010-4361(94)90206-2 ↗
2. Characterization of the fiber-matrix interphase and its influence on mechanical properties of unidirectional composites10.1177/002199839603000302 ↗
3. Interfacial toughness evaluation from the single-fiber fragmentation test10.1016/0266-3538(96)00096-6 ↗
4. Transverse single-fibre test for interfacial debonding in composites: 1. Experimental observations10.1016/S1359-835X(96)00123-6 ↗
5. The glass fibre-polymer interface: I-theoretical consideration for single fibre pull-out tests10.1016/0266-3538(85)90089-2 ↗
6. A microbond method for determination of the shear strength of a fiber/resin interface10.1016/0266-3538(87)90059-5 ↗
7. Interface properties and their influence on short fibre composites10.1016/0010-4361(90)90437-2 ↗
8. A methodology to measure the interface shear strength by means of the fiber push-in test10.1016/j.compscitech.2012.08.011 ↗
9. Influence of plastic deformation on single-fiber push-out tests of carbon fiber reinforced epoxy resin10.1016/j.compositesa.2015.01.011 ↗
10. The role of interfacial properties on the intralaminar and interlaminar damage behaviour of unidirectional composite laminates: experimental characterization and multiscale modelling10.1016/j.compositesb.2017.11.043 ↗
11. Transverse single-fibre test for interfacial debonding in composites: 2. modelling10.1016/S1359-835X(96)00125-X ↗
12. Micromechanical modelling of the transverse damage behaviour in fibre reinforced composites10.1016/j.compscitech.2010.12.006 ↗
13. Mechanical behavior of unidirectional fiber-reinforced polymers under transverse compression: microscopic mechanisms and modeling10.1016/j.compscitech.2007.02.001 ↗
14. Influence of the loading path on the strength of fiber-reinforced composites subjected to transverse compression and shear10.1016/j.ijsolstr.2007.10.014 ↗
15. Effect of fiber, matrix and interface properties on the in-plane shear deformation of carbon-fiber reinforced composites10.1016/j.compscitech.2010.02.014 ↗
16. Microscopic failure mechanisms of fiber-reinforced polymer composites under transverse tension and compression10.1016/j.compscitech.2012.08.001 ↗
17. Micromechanical analysis of polymer composites reinforced by unidirectional fibres: Part II – Micromechanical analyses10.1016/j.ijsolstr.2013.02.007 ↗
18. Micro-mechanical analysis of the effect of ply thickness on the transverse compressive strength of polymer composites10.1016/j.compositesa.2015.09.015 ↗
19. Transverse compression failure of unidirectional composites10.1002/pc.22996 ↗
20. A virtual experimental approach to microscale composites testing10.1016/j.compstruct.2017.03.016 ↗
21. An experimental and analytical investigation of the large strain compressive and tensile response of glassy polymers10.1002/pen.760302005 ↗
22. Effects of initial anisotropy on the finite strain deformation behavior of glassy polymers10.1016/0749-6419(93)90052-R ↗
23. On the origin of strain hardening in glassy polymers10.1016/S0032-3861(03)00112-5 ↗
24. Experimental characterisation and constitutive modelling of rtm-6 resin under impact loading10.1016/j.polymer.2008.04.018 ↗
25. Mechanical characterization and physics-based modeling of a highly-crosslinked epoxy resin [Ph.D. thesis]
26. On improved network models for rubber elasticity and their applications to orientation hardening in glassy polymers10.1016/0022-5096(93)90043-F ↗
27. A multi-mode approach to finite, three-dimensional, nonlinear viscoelastic behavior of polymer glasses10.1122/1.550755 ↗
28. A thermo-mechanically coupled theory for large deformations of amorphous polymers. Part I: Formulation10.1016/j.ijplas.2008.11.004 ↗
29. Finite-strain elasto-viscoplastic behavior of an epoxy resin: experiments and modeling in the glassy regime10.1016/j.ijplas.2014.07.002 ↗
30. Mechanical characterization and modeling of the deformation and failure of the highly crosslinked rtm6 epoxy resin10.1007/s11043-016-9336-6 ↗
31. A micromechanical study on the effect of intra-ply properties on transverse shear fracture in fibre reinforced composites10.1016/j.compositesa.2011.05.004 ↗
32. Micromechanical validation of a mesomodel for plasticity in composites10.1016/j.euromechsol.2016.06.008 ↗
33. Computational micromechanics of the transverse and shear behavior of unidirectional fiber reinforced polymers including environmental effects10.1016/j.compositesa.2016.06.018 ↗
34. In-plane strain measurements on a microscopic scale by coupling digital image correlation and an in situ sem technique10.1016/j.matchar.2005.08.004 ↗
35. Digital image correlation under scanning electron microscopy: methodology and validation10.1007/s11340-013-9782-x ↗
36. Application of digital image correlation at the microscale in fiber-reinforced composites10.1016/j.compositesa.2011.07.014 ↗
37. Full-field strain measurements at the micro-scale in fiber-reinforced composites using digital image correlation10.1016/j.compstruct.2015.12.020 ↗
38. Strain mapping at the micro-scale in hierarchical polymer composites with aligned carbon nanotube grafted fibers10.1016/j.compscitech.2016.10.021 ↗
39. Size effect in microcompression of epoxy micropillars10.1007/s10853-012-6513-0 ↗
40. Fibrous composite matrix characterisation using nanoindentation: the effect of fibre constraint and the evolution from bulk to in-situ matrix properties10.1016/j.compositesa.2014.09.022 ↗
41. Structural composites for multifunctional applications: current challenges and future trends10.1016/j.pmatsci.2017.04.005 ↗
42. Ncorr: Open-source 2d digital image correlation matlab software10.1007/s11340-015-0009-1 ↗
43. Impact of speckle pattern parameters on dic strain resolution calculated from in-situ sem experiments
44. An improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments10.1557/JMR.1992.1564 ↗
45. ABAQUS 6.12 Standard User Manual. Hibbit, Karlsson and Sorensen Inc., Pawtucket, RI, 2012.
46. Combining interface damage and friction in a cohesive-zone model10.1002/nme.1728 ↗
47. Accurate simulation of delamination under mixed-mode loading using a cohesive model with a mode-dependent penalty stiffness10.1016/j.compstruct.2017.10.017 ↗
48. The effect of through-thickness compressive stress on mode ii interlaminar fracture toughness10.1016/j.compstruct.2017.09.014 ↗
49. Measurement of mixed-mode delamination fracture toughness of unidirectional glass/epoxy composites with mixed-mode bending apparatus10.1016/0266-3538(96)00005-X ↗
50. Micro-mechanics based pressure dependent failure model for highly cross-linked epoxy resins10.1016/j.engfracmech.2016.02.039 ↗
51. Determination of the mechanical properties of amorphous materials through instrumented nanoindentation10.1016/j.actamat.2012.03.027 ↗
52. Extrinsic mechanical size effects in thin zrni metallic glass films10.1016/j.actamat.2015.02.038 ↗
53. Failure behavior of an epoxy matrix under different kinds of static loading10.1016/S0266-3538(01)00057-4 ↗
54. Experimental determination of the true epoxy resin strength using micro-scaled specimens10.1016/j.compositesa.2006.08.006 ↗
55. On a unique fracture micromechanism for highly cross-linked epoxy resins10.1016/j.jmps.2018.09.028 ↗
56. High-fidelity micro-scale modeling of the thermo-visco-plastic behavior of carbon fiber polymer matrix composites10.1016/j.compstruct.2015.08.047 ↗
57. A thermo-viscoelastic analysis of process-induced residual stress in fibre-reinforced polymer-matrix composites10.1016/j.msea.2006.10.060 ↗
58. Finite element investigations on the microstructure of fibre-reinforced composites10.3144/expresspolymlett.2008.79 ↗
59. Micromechanical modelling of the transverse damage behaviour in fibre reinforced composites10.1016/j.compscitech.2010.12.006 ↗
60. Modelling and computation of curing and damage of thermosets10.1016/j.commatsci.2011.09.013 ↗
61. Effects of inter-fiber spacing and thermal residual stress on transverse failure of fiber-reinforced polymer-matrix composites10.1016/j.commatsci.2012.09.027 ↗
62. Process-induced strains in rtm processing of polyurethane/carbon composites10.1016/j.compositesa.2015.08.018 ↗
63. Effect of cross-link density on strain gradient plasticity in epoxy10.1016/S0921-5093(99)00724-8 ↗
64. Enhanced stiffness of amorphous polymer surfaces under confinement of localized contact loads10.1002/adma.200602846 ↗
65. Characterization of indentation size effects in epoxy10.1016/j.polymertesting.2014.08.012 ↗
66. Length scale effects in epoxy: the dependence of elastic moduli measurements on spherical indenter tip radius10.1016/j.polymertesting.2016.06.002 ↗
67. Unveiling the nanoscale heterogeneity controlled deformation of thermosets10.1016/j.jmps.2018.08.014 ↗