The application of a ply-refinement technique to the analysis of microscopic deformation in interlaminar-toughened laminates with transverse cracks
Source abstract
Abstract
Predictions of a stress-transfer model proposed by McCartney for calculating the stress and displacement distributions in a symmetric laminate having cracks in 90° plies are compared with experimental results. A ply-refinement technique is used where each ply of the laminate is subdivided into layers having the same properties in order that through-thickness variations of the stress and displacement components can be taken into account. The transverse crack-opening displacement and shear deformation near ply interfaces are calculated and compared with the corresponding experimental results. Cross-ply laminates made of two material systems are used in the experiment. One is interleaved CFRP, T800H/3631-FM300, with epoxy resin (FM300) layers about 100 μm thick between 0 and 90° plies. The other is toughness-improved CFRP, T800H/3900-2, with selectively toughened interlaminar layers about 30 μm thick at all the ply interfaces. It is found that the new model with the ply-refinement technique is more accurate than a previous approximate analysis.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Mechanical Behavior of Composites · Composite Structure Analysis and Optimization · Epoxy Resin Curing Processes
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References (17)
Show source-provided references
1. On the transverse cracking and longitudinal splitting behavior of glass and carbon fiber reinforced epoxy cross ply laminates and the effect of poisson and thermally generated strain10.1098/rspa.1979.0071 ↗
2. Progressive transverse cracking in composite laminates10.1177/002199838802201001 ↗
3. A simplified analysis of transverse ply cracking in cross-ply laminates10.1016/0266-3538(88)90008-5 ↗
4. Prediction of transverse cracking and stiffness reduction in cross-ply laminated composites10.1177/002199838902300704 ↗
5. Progressive transverse cracking of crossply composite laminates10.1177/002199839002401108 ↗
6. In-situ observation and probabilistic prediction of microscopic failure processes in CFRP cross-ply laminates10.1016/0266-3538(94)90204-6 ↗
7. Initiation and growth of delamination from the tips of transverse cracks in CFRP cross-ply laminates10.1016/0266-3538(94)90166-X ↗
8. Analysis of cracked laminates10.1016/0167-6636(85)90011-0 ↗
9. The strain energy release rate of composite microcracking10.1177/002199838902301102 ↗
10. Theory of stress transfer in a 0°–90°–0° cross-ply laminate containing a parallel array of transverse cracks10.1016/0022-5096(92)90226-R ↗
11. Ogihara S, Takeda N, Kobayashi A. Analysis of stress and displacement fields in interlaminar-toughened composite laminates with transverse cracks. Adv Comp Mater 1998;7:151–68.10.1163/156855198X00110 ↗
12. Takeda N, Ogihara S. Micromechanical characterization of local deformation in interlaminar-toughened CFRP laminates. Composites Part A 1998;29:1545–52.10.1016/S1359-835X(98)00067-0 ↗
13. McCartney LN. A recursive method of calculating stress transfer in multiple-ply cross-ply laminates subject to biaxial loading. NPL Report DMM(A)150, 1995.
14. Application of microline/grid methods to temperature-dependent microscopic deformation damage in CFRP laminates10.1007/BF02317857 ↗
15. Evaluation of microscopic deformation in CFRP laminates with delamination by micro-grid methods10.1177/002199839803200105 ↗
16. Characterization of microscopic failure process and deformation in glass/nylon6 composites by micro-grid methods10.1163/156855498X00108 ↗
17. Takeda N, Niizuma H, Ogihara S, Kobayashi A. Experimental evaluation of thermal residual stress in CFRP cross-ply laminates. Matererials System 16;1995:73–8 (in Japanese).