Effects of Multiple Delaminations on Compressive Buckling Behaviors of Composite Panels

Suemasu, Hiroshi

doi:10.1177/002199839302701202

Cited by 74 publications

(27 citation statements)

References 9 publications

(10 reference statements)

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“…As mentioned in the reference (20) , the delamination cracks usually locate in a helical pattern. In the present study, to simplify the model of the multi-crack effect, the helical pattern is not adopted here.…”

Section: Fem Analysesmentioning

confidence: 90%

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Using Electrical Resistance Change to Monitor the Damage in a Thick CFRP Plate Caused by a Dent

Todoroki

Shimazu

Mizutani

et al. 2011

JMMP

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An impact load on a thick carbon fiber reinforced plastic (CFRP) plate usually causes a dent. The dent results in a decrease of electrical resistance. Our previous paper demonstrated the effect of the dent in the measurement of electrical resistance change of a thick CFRP plate subjected to impact loading. The present paper focuses on the electrical resistance decrease caused by the dent. Numerous FEM analyses were performed, and the relationship between electrical resistance changes and delamination location was constructed, by measuring the response surfaces. Several experiments were conducted and the measured electrical resistance changes were used to predict damage location from the response surfaces. The present study shows that the dent decreases the electrical resistance change ratio even in the adjacent segments, and the electrical resistance changes caused by the dent enable us to monitor the damage location. FEM analyses for a projected area model are sufficient to construct the relationships without resorting to many experiments.

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Section: Fem Analysesmentioning

confidence: 90%

“…In reality the actual damage to the laminated CFRP has complicated multiple delamination cracks (18) . It is impossible to analyze the multiple delamination cracks in detail using 3-D FEM analyses.…”

Section: Introductionmentioning

confidence: 99%

Using Electrical Resistance Change to Monitor the Damage in a Thick CFRP Plate Caused by a Dent

Todoroki

Shimazu

Mizutani

et al. 2011

JMMP

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“…Suemasu has studied the buckling behavior of delaminated composite laminates by using classical laminate plate theory (CLPT) and first order shear deformation theory (FSDT) [7,8]. Adan et al have solved the governing differential equation for beams with multiple through the width delaminations to find the buckling load [9].…”

Section: Introductionmentioning

confidence: 99%

Large Deflection Compressional Analysis of Unsymmetric Delaminated Composite Plates with Consideration of Contact Phenomenon

Kharazi

Ovesy

2010

Appl Compos Mater

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In this study, an efficient method is developed to investigate the compressive large deflection behavior of unsymmetric composite laminates with multiple through-thewidth delaminations. The analytical method is based on the first order shear deformation theory (FSDT) and its formulation is developed on the basis of the Rayleigh-Ritz approximation technique by the implementation of the simple and complete polynomial series. The method can handle both local deflection of the delaminated sublaminate and global deflection of the whole plate. Also, the contact among sublaminates is investigated. The three-dimensional finite element analysis is performed by using ANSYS5.4 general purpose commercial software, and the results are compared with those obtained by the analytical model.

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“…He also investigated the load-displacement behavior, and the corresponding growth of the delamination. Several other researchers [8][9][10] also studied the delamination growth and the corresponding stability analysis. It was observed that compressive buckling stress suddenly dropped as the multiple delaminations reached a certain length.…”

Section: Introductionmentioning

confidence: 99%

Buckling of Sandwich Composites; Effects of Core?Skin Debonding and Core Density

et al. 2005

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Foam-core sandwich composites have been fabricated using innovative co-injection resin infusion technique and tested under in-plane compression. The sandwich construction consisted of Klegcell foam as core materials and S2-glass/vinyl ester composites as face sheets. Tests were conducted with various foam densities and also with implanted delamination between the core and the face sheet. The intent was to investigate the effect of core density, and the effect of core-skin debonds on the overall buckling behavior of the sandwich. Analytical and finite element calculations were also performed to augment the experimental observations. It has been observed that core density has direct influence on the global buckling of the sandwich panel, while embedded delamination seem to have minimal effect on both global as well as local buckling. Detailed description of the experimental work, finite element modeling and analytical calculations are presented in this paper.

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Effects of Multiple Delaminations on Compressive Buckling Behaviors of Composite Panels

Cited by 74 publications

References 9 publications

Using Electrical Resistance Change to Monitor the Damage in a Thick CFRP Plate Caused by a Dent

Using Electrical Resistance Change to Monitor the Damage in a Thick CFRP Plate Caused by a Dent

Large Deflection Compressional Analysis of Unsymmetric Delaminated Composite Plates with Consideration of Contact Phenomenon

Buckling of Sandwich Composites; Effects of Core?Skin Debonding and Core Density

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