A combined strain and compliance method for improving ASTM D6671 to measure the mixed modes I/II interlaminar fracture toughness
Source abstract
Abstract
Abstract Mixed modes interlaminar delamination is one of the most common and serious failure modes in advanced carbon fiber reinforced composite materials. The ASTM standard D6671 is widely used to measure the mixed modes I/II interlaminar fracture toughness. One of the shortcomings of the current ASTM D6671 is the requirement of measuring the material Young’s moduli from separate tensile tests and samples, which are time-consuming and source of uncertainty. Accurate and closed-form strain and compliance solutions to the mixed mode bending specimen are given in this paper. By using these solutions, a combined strain and compliance method is proposed to measure the mixed modes I/II interlaminar fracture toughness, which avoids the measurement of the Young’s moduli from separate tests and specimens. The average difference between the mixed modes fracture toughness measured from the present method and that from ASTM D6671 is within 5%, thus the present paper provides a consistent and simple method for measuring the mixed modes I/II interlaminar fracture toughness.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Mechanical Behavior of Composites · Fatigue and fracture mechanics · Ultrasonics and Acoustic Wave Propagation
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (40)
Show source-provided references
1. Irving · 2014
2. Characterization and analysis of delamination fracture in composites-a review of developments from 1990 to 200110.1115/1.1504848 ↗
3. The role of delamination in failure of fibre-reinforced composites10.1098/rsta.2011.0441 ↗
4. Virtual crack closure technique: History, approach, and applications10.1115/1.1595677 ↗
5. Progressive crack growth analysis using interface element based on the virtual crack closure technique10.1016/j.finel.2006.03.007 ↗
6. Progressive delamination using interface elements10.1177/002199839803201401 ↗
7. Discrete cohesive zone model for mixed-mode fracture using finite element analysis10.1016/j.engfracmech.2006.03.006 ↗
8. Modelling discrete failures in composites with interface elements10.1016/j.compositesa.2010.02.011 ↗
9. Simulation of delamination growth in multidirectional laminates under mode I and mixed mode I/II loadings using cohesive elements10.1016/j.compstruct.2014.05.042 ↗
10. Multiple solutions in the cohesive zone models of fracture10.1016/j.engfracmech.2017.03.026 ↗
11. A novel mixed-mode cohesive formulation for crack growth analysis10.1016/j.compstruct.2015.11.015 ↗
12. Delamination propagation criterion including the effect of fiber bridging for mixed-mode I/II delamination in CFRP multidirectional laminates10.1016/j.compscitech.2017.09.002 ↗
13. Accurate simulation of delamination growth under mixed-mode loading using cohesive elements: definition of interlaminar strengths and elastic stiffness10.1016/j.compstruct.2010.01.012 ↗
14. A status report on delamination resistance testing of polymer–matrix composites10.1016/j.engfracmech.2007.03.012 ↗
15. Mixed-mode bending method for delamination testing10.2514/3.25204 ↗
16. Refinements to the mixed-mode bending test for delamination toughness
17. Experimental assessment of an End Notched Flexure test configuration with an inserted roller for analyzing mixed-mode I/II fracture toughness10.1016/j.engfracmech.2016.05.012 ↗
18. An apparatus for mixed-mode fracture characterization of adhesive joints10.1016/j.tafmec.2017.04.014 ↗
19. The mixed-mode delamination of fiber composite materials10.1016/0266-3538(93)90031-B ↗
20. Measurement of mixed-mode delamination fracture toughness of unidirectional glass/epoxy composites with mixed-mode bending apparatus10.1016/0266-3538(96)00005-X ↗
21. An evaluation of data reduction methods for the mixed mode bending test10.2514/2.129 ↗
22. Closed-form solutions for cohesive zone modeling of delamination toughness tests10.1016/j.ijsolstr.2015.12.025 ↗
23. ASTM D6671/D6671M · 2013
24. On the calculation of energy release rates for cracked laminates10.1007/BF00017790 ↗
25. Shear force, root rotations, phase angles and delamination of layered materials10.1016/j.engfracmech.2018.01.033 ↗
26. Fracture toughness
27. Mixed mode cracking in layered materials10.1016/S0065-2156(08)70164-9 ↗
28. The effects of shear and near tip deformations on energy release rate and mode mixity of edge-cracked orthotropic layers10.1016/j.engfracmech.2007.01.013 ↗
29. An experimental data reduction method for the mixed mode bending test based on the J-integral approach10.1016/j.compscitech.2015.05.021 ↗
30. A modification of the mixed-mode bending test apparatus10.1016/S1359-835X(98)00193-6 ↗
31. The applicability of J-integral approach in the determination of mixed-mode fracture energy in a ductile adhesive10.1016/j.ijadhadh.2018.02.027 ↗
32. Measurement of interlaminar fracture properties of composites using the J-integral method10.1177/0731684416642031 ↗
33. A simple method for determining the mode I interlaminar fracture toughness of composites without measuring the growing crack length10.1016/j.engfracmech.2018.01.014 ↗
34. Experimental and analytical characterizations of finite interlaminar crack growth of 2D woven textile composites10.1016/j.compstruct.2018.08.050 ↗
35. S, Wang, Experimental assessment of mixed-mode partition theories for generally laminated composite beams10.1016/j.compstruct.2014.12.064 ↗
36. The effects of shear on delamination of beam-like geometries10.1016/S0022-5096(03)00070-X ↗
37. Finite element analysis of beam specimens used to measure the delamination resistance of composites10.1520/CTR10104J ↗
38. Mode I fracture toughness estimation of wood by DCB test10.1016/j.compositesa.2005.12.001 ↗
39. ASTM D 3518 · 2013
40. ASTM D 3039 · 2017