A review of impact testing on marine composite materials: Part I – Marine impacts on marine composites

Sutherland, L.S.

doi:10.1016/j.compstruct.2017.12.073

Cited by 89 publications

(45 citation statements)

References 237 publications

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“…The error at a/w = 0.5 is stated as being 1.5%. In fact a slightly better fit to the Howland curve is given by Note that the factor defined in equations (4) and (5) is that by which the maximum stress induced by a given applied uniaxial stress in an infinite plate must be multiplied to give the maximum stress induced by the same stress applied to a plate of finite width. It includes the effect of the reduced cross-sectional area due to the hole, together with the change in distribution of stress across the portion of plate between the hole and the edge of the plate.…”

Section: Finite Width Adjustment For Circular Holesmentioning

confidence: 99%

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Reduction of strength of GFRP sandwich panels in naval ships by face sheet holes, cracks and impact damage

Hayman

Echtermeyer

2019

Jnl of Sandwich Structures & Materials

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Section: Finite Width Adjustment For Circular Holesmentioning

confidence: 99%

“…The main concern is to evaluate their consequences for the subsequent safety and performance of the vessel and its systems. As pointed out by Sutherland [4,5], this approach conveniently avoids to a large extent the need to establish the precise nature of the events and mechanisms that have initially led to the defects or damage.…”

Section: Introductionmentioning

confidence: 99%

Reduction of strength of GFRP sandwich panels in naval ships by face sheet holes, cracks and impact damage

Hayman

Echtermeyer

2019

Jnl of Sandwich Structures & Materials

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“…Denizcilik endüstrisinde tekne ve bot yapımından balık oltasına kadar birçok alanda uygulamalara sahip olan elyaf takviyeli kompozit malzemeler sağladıkları üstün özellikleri sebebiyle tercih edilmektedir. Darbe davranışları kompozit malzemelerde araştırılması gereken bir konu olup, farklı hasar mekanizmaları ve bunların etkileşimi malzeme hasarına sebep olmaktadır (Sutherland, 2018). Darbe tokluğu, malzemelerin çalışma ortamlarında maruz kalabilecekleri darbeli yüklere karşı dayanım değerinin bir ifadesi olup, sistemin yapısal kararlılığı için önem arz etmektedir.…”

Section: Introductionunclassified

Investigation of the Impact Behavior of Pultruded Hybrid Composite Profiles

2019

JSTR

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The pultrusion process is a widely used technique for production of continuous fiber reinforced plastic profiles with constant cross-section. In some applications, requirements are demanding for profiles able to provide better thermal, acoustic insulation or mechanical properties. In such cases, hybrid pultruded profiles with certain reinforcement configuration are a possible solution. In this study, an experimental study has been carried out to investigate the impact behaviour of polymer matrix hybrid fiber reinforced I profiles. The profiles were produced as reinforced with glass-carbon fibers and polyester resin by pultrusion method. A reference profile (all-GFRP: Glass Fiber Reinforced Plastics) and six series of hybrid profiles which have different types and configuration of fiber reinforcement were tested under Izod notch impact test to assess their structural response up to failure. Izod notch impact tests were conducted according to the ASTM D 256 standard. According to the results of the experimental study; it has been found that the fibre, matrix and mat type added into the hybrid composites during the production of hybrid composite materials significantly affect the impact strength of the produced hybrid composite materials ÖzetPultruzyon işlemi, sabit kesitli sürekli elyaf takviyeli plastik profillerin üretimi için yaygın olarak kullanılan bir tekniktir. Bazı uygulamalarda daha iyi termal, akustik yalıtım veya mekanik özellikler sağlayabilen profiller için gereksinimlere ihtiyaç duyulmaktadır. Bu gibi durumlarda belirli takviye konfigürasyonuna sahip pultruzyonla üretilmiş hibrit kompozit profiller olası bir çözümdür. Bu çalışmada; polimer matrisli hibrit fiber takviyeli I profillerin darbe davranışını araştırmak için deneysel bir çalışma gerçekleştirilmiştir. Profiller cam-karbon elyaflarla takviyelendirilmiş ve polyester matrisli olarak pultruzyon yöntemi ile üretilmiştir. Bir referans profil (tamamen CTP: Cam Elyaf Takviyeli Plastik) ve farklı konfigürasyonlu elyaf takviyesine sahip altı seri hibrit profiller, İzod çentik darbe testinde deneye tabi tutulmuşlardır. İzod çentik darbe deneyleri ASTM D 256 standardına göre gerçekleştirilmiştir. Deneysel çalışmaların sonuçlarına göre; hibrit kompozit malzemelerin üretimi esnasında hibrit kompozitlere eklenen elyaf, matris ve keçe tipinin üretilmiş hibrit kompozit malzemelerin darbe dayanımını önemli ölçüde etkilediği bulunmuştur.

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“…During service life, sandwich structures experience low velocity impact loadings such as tool drop during manufacturing or maintenance, moorings or floating objects, ice floes and debris [13]. It is generally accepted that low-velocity impacts (LVI) occur at velocities below 10 m/s, and can reduce the strength of whole structure under quasi-static and dynamic loads due to the localised internal skin and/or core damage [14,15].…”

Section: Introductionmentioning

confidence: 99%

“…Despite their popularity, they have intrinsically lower mechanical properties which have to be complemented with synthetic materials to form stronger hybrid structures. Wood materials are relatively brittle and absorb lower specific energy (J/kgm 2 ) under LVI loadings [13,27]. For instance, balsa wood cores perform well under static loading, but they fail catastrophically under impact loading due to the low fracture toughness along the grain direction [28].…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on low-velocity impact response of wood skinned sandwich composites with different core configurations

Demircioğlu

Balıkoğlu

İnal

et al. 2018

Materials Today Communications

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In this paper, an experimental investigation on the low-velocity impact response of wood skinned hybrid sandwich composites was presented. Several alternative design configurations were developed by using rubber-cork and E-glass composite layers between the foam core and wood skin in order to improve the impact performance of conventional sandwich composites. Low-velocity impact (LVI) testing was performed using a drop weight test machine at different impact energies and destructive cross-sectioning was performed to examine the interior damage growth and penetration depth of the specimens. The impact performance of the specimens was evaluated in terms of energy absorption capacity, maximum contact force and penetration depth. The multi-core design concept significantly improved the energy absorption capacity with a reduced extent of impact induced damage. The proportion of recyclable materials in each configuration and the energy absorption level per unit cost were also presented for the interest of product designers.

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A review of impact testing on marine composite materials: Part I – Marine impacts on marine composites

Cited by 89 publications

References 237 publications

Reduction of strength of GFRP sandwich panels in naval ships by face sheet holes, cracks and impact damage

Reduction of strength of GFRP sandwich panels in naval ships by face sheet holes, cracks and impact damage

Investigation of the Impact Behavior of Pultruded Hybrid Composite Profiles

Experimental investigation on low-velocity impact response of wood skinned sandwich composites with different core configurations

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