Some experimental findings in compression-after-impact (CAI) tests of CF/PEEK (APC-2) and conventional CF/epoxy flat plates

Ishikawa, Takashi; Sugimoto, Sunao; Matsushima, Masamichi; Hayashi, Yuzo

doi:10.1016/0266-3538(95)00079-8

Cited by 109 publications

(57 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Considerable research has been devoted to the experimental analysis of compression-after-impact (CAI) behavior of fiber-reinforced composites (e.g., [3][4][5][6][7][8][9] among many others). The main foci of the experimental investigations have been (1) characterization of damage within the material due to impact and (2) phenomenological correlation of the reduction in the compressive strength to the impact-induced damage.…”

Section: Introductionmentioning

confidence: 99%

Compression-after-impact response of woven fiber-reinforced composites

Yan

Oskay

Krishnan

et al. 2010

Composites Science and Technology

109

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Compression-after-impact response of woven fiber-reinforced composites

Yan

Oskay

Krishnan

et al. 2010

Composites Science and Technology

109

View full text Add to dashboard Cite

“…Sometimes, it is even possible to observe the propagation of delamination due to this buckling [13,18,26,27]. The majority of researchers agree that, indeed, the buckling (especially local buckling) plays a key role in the final rupture [13,15,18,[25][26][27][28][29][30][31]. However, this phenomenon is not sufficient to explain the final failure of the structure, since in most cases the delamination does not propagate over the entire width of the plate, and the final rupture is due to the sudden propagation of a crack from the impact zone to the edges of the structure.…”

Section: Introductionmentioning

confidence: 99%

“…Indeed, among the experimental studies, some focus on the influence of material properties on the evolution of the residual strength: fibre [8,11], resin [11][12][13], interface [14], stacking [15], transverse reinforcement like stitching [16,17] or Z-pinning [18], fabric instead of unidirectional tape [12,19], curing temperature [19]. There are also some experimental studies concerning the influence of test conditions such as: temperature during impact [20], hygrothermal conditions [12,[21][22][23], fatigue loading [24], or use of protective layer [25].…”

Section: Introductionmentioning

confidence: 99%

Experimental analysis of CFRP laminates subjected to compression after impact: The role of impact-induced cracks in failure

Rivallant

Bouvet

Abdallah

et al. 2014

Composite Structures

View full text Add to dashboard Cite

“…In a quasi-isotropic CFRP laminate the delamination generally shows a complicated configuration with matrix cracks (23), (24) . For convenience in our numerical simulation square-shaped delaminations with matrix cracks were assumed for the finite element model (see Fig.…”

Section: Delaminations and Matrix Cracksmentioning

confidence: 99%

Finite Element Study on Delamination Identification in Quasi-Isotropic CFRP Laminate by Residual Stress Release Using the Electric Potential Change Method

Ueda

Todoroki

2008

JMMP

View full text Add to dashboard Cite

The electric potential change method (EPCM) was applied to identify delamination in quasi-isotropic carbon fiber reinforced plastic (CFRP) laminate. The authors have introduced EPCM previously to detect delamination in a cross-ply CFRP laminate although it was difficult to apply to quasi-isotropic CFRP laminate because of its complicated electric anisotropy. In this study, a new concept was introduced to resolve this problem. Residual stress that developed during the curing process in CFRP laminate fabrication was utilized. This residual stress was released locally by the creation of a delamination which resulted in a local strain variation on the laminate surface. Since the electric conductivity of CFRP may change with applied strain because of its piezoresistivity a CFRP cloth was used as a strain sensor. The release of residual stress was detected as an electric potential change of the CFRP cloth by applying electric current to the laminate. The delamination location and size were estimated from electric potential changes. A finite element study was performed to investigate the applicability of the method. Two steps of finite element analysis were performed to calculate the electric potential change due to delaminations and matrix cracks, structural analyses to calculate strain variation due to release of the residual stress by the delamination and then electric field analyses to calculate electric potential change due to strain variation. The delamination location and size were estimated from electric potential changes using a response surface methodology. A numerical simulation was successful in estimating delaminations in quasi-isotropic CFRP laminate.

show abstract

Some experimental findings in compression-after-impact (CAI) tests of CF/PEEK (APC-2) and conventional CF/epoxy flat plates

Cited by 109 publications

References 5 publications

Compression-after-impact response of woven fiber-reinforced composites

Compression-after-impact response of woven fiber-reinforced composites

Experimental analysis of CFRP laminates subjected to compression after impact: The role of impact-induced cracks in failure

Finite Element Study on Delamination Identification in Quasi-Isotropic CFRP Laminate by Residual Stress Release Using the Electric Potential Change Method

Contact Info

Product

Resources

About