Interlaminar fracture behaviour of sandwich structures

Papanicolaou, George; Bakos, D

doi:10.1016/1359-835x(95)00026-x

Cited by 15 publications

(11 citation statements)

References 9 publications

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“…Papanicolaou et al [41], shows that independently of the displacement rate applied, the linear elastic region is followed by a large non-linear elastic region and this in turn by an inelastic response. The low flexural rigidity of the specimens is mainly due to their low thickness (2h = 3.3-4.6mm).…”

Section: Analytical Resultsmentioning

confidence: 99%

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Results of Finite Element Analysis for Interlaminar Fracture Reinforced Thermoplastic Composites

Charitidis¹

2017

MSEJ

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Section: Analytical Resultsmentioning

confidence: 99%

“…However, these assumptions are hardly ever fullfilled in practice. In that case, it is proposed the following approach [41]. According to the geometry (figure 1), And where δ is the displacement, P the load, α the crack length, E the bending modulus, B the specimen's width, h the thickness and C the compliance.…”

Section: The Proposed Approachmentioning

confidence: 99%

Results of Finite Element Analysis for Interlaminar Fracture Reinforced Thermoplastic Composites

Charitidis¹

2017

MSEJ

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“…This phenomenon indicates that interfacial toughness is decreasing, which is also described by the ref. [26].…”

Section: Effects From Loading Ratesmentioning

confidence: 95%

The interfacial fracture behavior of foam core composite sandwich structures by a viscoelastic cohesive model

Sun

Chen

2011

Sci. China Phys. Mech. Astron.

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A sandwich beam model consisting of two face sheets and a foam core bonded by a viscoelastic adhesive layer is considered in order to investigate interfacial fracture behavior. Firstly, a cohesive zone model in conjunction with a Maxwell element in parallel, or with a Kelvin element in series, respectively, is employed to describe the characteristics of viscoelasticity for the adhesive layer. The models can be implemented into the implicit finite element code. Next, the parametric study shows that the influences of loading rates on the cohesive zone energy and strength are quite different for different models. Finally, a sandwich double cantilever beam model is adopted to simulate the interface crack growth between the face sheet and core. Numerical examples are presented for various loading rates to demonstrate the efficacy of the rate-dependent cohesive models. viscoelasticity, interfacial crack, rate-dependent cohesive model, composite sandwich beam PACS: 46.35.+z, 68.35.-p, 46.50.+a

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“…Under certain load and environmental conditions, these defects can grow and eventually cause the separation of the face sheet from the core. Mode-I tests are essential in the proper design of such materials in order to improve the interlayer bonding, as well as the fracture toughness of the sandwich core material [6].…”

Section: Introductionmentioning

confidence: 99%

The Fracture Toughness of PVC / GRP Sandwich Systems in Marine Environment

Koçhan

Neser

Özes

2008

Advanced Composites Letters

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The aim of this study is to investigate experimentally the fracture toughness of sandwich systems with the PVC foam core in marine environment with a Mode-I Cracked Sandwich Beam (CSB) test arrangement. Five CSB specimens at each condition were tested. To get the values under marine environment, one set of specimen was conditioned in a 5% solution of NaCl for a 120 h period at a constant temperature of 50 o C. It has been found that the fracture toughness of the PVC foam core material slightly increases under marine environmental conditions. It can be concluded that under the conditions in this study the system with the PVC core was largely unaffected by the immersion process.

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Interlaminar fracture behaviour of sandwich structures

Cited by 15 publications

References 9 publications

Results of Finite Element Analysis for Interlaminar Fracture Reinforced Thermoplastic Composites

Results of Finite Element Analysis for Interlaminar Fracture Reinforced Thermoplastic Composites

The interfacial fracture behavior of foam core composite sandwich structures by a viscoelastic cohesive model

The Fracture Toughness of PVC / GRP Sandwich Systems in Marine Environment

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