Ply Cracking Damage Theory and Damage Behavior in CFRP Cross-poly Laminates.

Tohgo, Keiichiro; Akizuki, Kenji; Sugiyama, Yuji

doi:10.1299/kikaia.64.1160

Cited by 4 publications

(5 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2, of which the cracks are arranged with separation, distance 2L. The ply-cracking damage theory for the cross-ply laminate [4] is extended to predict the crack growth in [0 n /90 n ] s .…”

Section: Damage Criterion and Stiffness Reductionmentioning

confidence: 99%

“…where the superscript (1) and ( 2) represent the laminate numbers of the micro model. The critical strain of the crack growth is calculated by the equating the released energy to the decrease in the potential energy [4]. The released energy is calculated by using the critical energy release rate and the decrease in the potential energy is calculated by the stiffness reduction, respectively.…”

Section: Damage Criterion and Stiffness Reductionmentioning

confidence: 99%

“…Hashin [3] has studied stiffness reduction of cross-ply laminates caused by cracks. Furthermore, to evaluate the evolution of transverse lamina cracks in cross-ply laminate, two-dimensional finite element method has been developed by Tohgo and co-workers [4]. They applied the energy approach to the analysis of the growth of the transverse lamina crack and the stiffness reduction of the cross-ply laminate.…”

Section: Introductionmentioning

confidence: 99%

“…This paper shows that the analytical method for transverse lamina cracking in multidirectionally laminated composite [5] is applied to the finite element method in order to evaluate the crack growth in a structure that made of the laminated composite. The critical strain condition of the crack growth on the basis of the energy criterion is calculated by using the energy balance between the stiffness reduction and the energy release of the crack growth [4]. The stiffness reduction of the laminated composite is evaluated by the total force method.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Analysis of Initiation and Extension of Transverse Lamina Cracking in Multidirectionally Laminated Composites by Total Force Method-Finite Element Method

Kato

Kageyama

Kimpara

et al. 2003

KEM

View full text Add to dashboard Cite

This paper presents the adaptation of the analytical method for transverse lamina cracking in multidirectionally laminated composites to the finite element method. The damage initiation and extension in a structure made of the laminated composite are evaluated by the developed finite element method. The reduction in the stiffness of the laminated composite that caused by the crack growth is evaluated by the total force method. In the present analyses by the developed method, the critical strain of the crack growth is the value of the strain which satisfies both energy criterion and stress criterion. To demonstrate the accuracy of the developed method, the analytical results of crack growth in CFRP quasi-isotropic laminate with a circular hole are compared with experimental results.

show abstract

“…2, of which the cracks are arranged with separation, distance 2L. The ply-cracking damage theory for the cross-ply laminate [4] is extended to predict the crack growth in [0 n /90 n ] s .…”

Section: Damage Criterion and Stiffness Reductionmentioning

confidence: 99%

Section: Damage Criterion and Stiffness Reductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Analysis of Initiation and Extension of Transverse Lamina Cracking in Multidirectionally Laminated Composites by Total Force Method-Finite Element Method

Kato

Kageyama

Kimpara

et al. 2003

KEM

View full text Add to dashboard Cite

show abstract

“…Then their fracture patterns differ in loading direction and stacking sequence. Some research has been done for this effect of the laminate, and some papers have been published [1][2][3][4][5][6][7][8]. However, much of them deal with the cross-ply laminate, and there are little research on quasi-isotropic laminates except the work of M. Uemura and K. Iyama.…”

Section: Introduction Frp Has High Strengthmentioning

confidence: 99%

The Effect of Loading Direction and Stacking Sequence on the Strength in Quasi-Isotropic CFRP Laminates

Nagata

Takezono

Chen

et al. 2003

Journal of the Society of Materials Science, Japan

View full text Add to dashboard Cite

For quasi-isotropic CFRP laminates, the elastic stress-strain behavior is expected to be the same in any loading direction and stacking sequence of laminate. But fracture and strength of them may strongly depend on the loading direction and stacking sequence of laminate. The laminate has structurally made up many interfaces and the lamina in the laminate is anisotropic due to embedded fiber. Therefore, once matrix cracking or delamination takes place in the loading laminate, the laminates change into anisotropic ones. In this paper, the tensile tests were carried out in the constant displacement velocity for the specimens, cut out in several directions from each laminate, to investigate the influence of loading direction and stacking sequence on the damage pattern and tensile strength. A FEM code was used to analyze the stresses in the specimens, and the comparison between the calculated stressstrain curves and experimental ones was attempted.In addition, using Tsai-Wu failure criterion, the strength of the laminates were predicted in the various loading directions. And the correlations between the predicted results and experimental one are discussed.

show abstract