Static behavior of three-dimensional ıntegrated core sandwich composites subjected to three-point bending

Karahan, Mehmet; Gül, Hakan; Karahan, Nevin; Ivens, Jan

doi:10.1177/0731684412474857

Cited by 39 publications

(34 citation statements)

References 31 publications

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“…Bunun yanında sandviç yapıyı oluşturan malzemeler ve üretim teknikleri de mekanik özellikler ve performans açısından önemli etkiye sahiptir (Gibson ve Ashby, 1999). Bu konuda literatürde son yıllarda yapılan birçok çalışmaya rastlamak mümkündür (Mohamed ve diğ., 2015), (Bella ve diğ., 2012), (Wang ve diğ., 2016) (Gündoğan ve diğ., 2009), (Çavdar ve Bingöl, 2016), (Doğru, 2017) [8][9][10][11][12][13]. Özellikle sandviç kompozitlerin statik ve dinamik yüklemelerdeki davranışları birçok farklı malzeme kombinasyonu için incelenmiştir.…”

Section: Gġrġġunclassified

Üç Boyutlu Dokuma Kumaş Takvi̇yeli̇ Sandvi̇ç Kompozi̇tlerde Yüzeylerdeki̇ Elyaf Katman Sayisinin Eği̇lme Davranişina Etki̇si̇

Ertan

Kuş

Durgun³

2019

Uludağ University Journal of the Faculty of Engineering

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Bu çalışmada karbon elyaf yüzeyli üç boyutlu dokuma sandviç kompozit yapıların farklı yüzey katman sayısının eğilme davranışına etkisi incelenmiştir. Alt ve üst yüzey malzemesi olarak kullanılan reçine emdirilmiş karbon elyaflar vakum infüzyon tekniği kullanılarak 2, 3 ve 4 katman halinde üç boyutlu ara kumaşa birleştirilmiştir. Reçine malzemesi olarak epoksi ve polyester olmak üzere iki farklı polimer malzeme kullanılmıştır. Farklı yüzey kalınlıklarına ve reçine malzemesine sahip sandviç kompozit plakalar standartlara uygun numuneler halinde kesilmiştir. Eğilme davranışını test etmek için oda sıcaklığında üç nokta eğilme deneyleri yapılmış ve numunelerin eğilme kuvveti-sehim eğrileri oluşturulmuştur. Sonuçlar, sandviç kompozitlerin yüzey malzemesi katman sayısı artışı ile birlikte eğilmeye karşı dirençlerinin arttığını göstermiştir. Epoksi matrisli kompozitlerin polyestere kıyasla daha yüksek dayanım sergiledikleri ve katman kalınlığına bağlı dayanımın artışının daha fazla olduğu tespit edilmiştir.

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Section: Gġrġġunclassified

Üç Boyutlu Dokuma Kumaş Takvi̇yeli̇ Sandvi̇ç Kompozi̇tlerde Yüzeylerdeki̇ Elyaf Katman Sayisinin Eği̇lme Davranişina Etki̇si̇

Ertan

Kuş

Durgun³

2019

Uludağ University Journal of the Faculty of Engineering

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“…Karahan et al [3] have investigated the effects of core material thickness and core density under three point bending loading for the flexural strength of sandwich composites having woven fabric reinforced surface material. Balcioglu [4] have investigated the flexural behaviors of sandwich composites manufactured by using natural and recycled material were investigated.…”

Section: Introductionmentioning

confidence: 99%

Determination of Mechanical Properties of Natural Sandwich Composites Produced by Using Waste Material

Balcıoğlu

Sakin²

2019

Sakarya University Journal of Science

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In the recent year, with the development of technology the acceleration of the manufacturing of new products has increased the use of raw materials in the industry. In addition to decreasing underground resources, increased environmental pollution has opened the way for the use of natural materials in the industry. Also, the reuse of materials, which were recycled by recovery methods, is both conservation and economical method in terms of raw material deficiency. In this study, mechanical properties of sandwich composites made of natural and recycled material were investigated. In this context, core material with different thicknesses (4 mm, 8 mm and 12 mm) were produced using different size granules (1 mm, 2 mm and 4 mm), which were recycled from the used vehicle tire. Sandwich composite materials have become final with the combination of core materials with natural jute fabric reinforced laminated composites. In order to test the usability of the produced sandwich composite materials as building material, the mechanical behaviours of the sandwich composite were investigated under tension and compression load. Test results show that mechanical behaviour of the material varies according to the granular size, thickness of the core material, and fiber orientation of reinforcement fabric.

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“…Low velocity impact test was conducted on 3DIWF composite with different core thicknesses, and it was found that energy absorption decreases with the increment of core thickness [9]. Karahan et al [10] investigated the effect of core thickness on bending and shear performance of 3DIWF composites. Their results showed that by increasing core thickness from 10 to 22 mm, both shear modulus and bending modulus reduce.…”

Section: Introductionmentioning

confidence: 99%

A parametric investigation into the flexural properties of singly curved composites reinforced with 3D-integrated woven fabrics

Dastan

Hejazi

Sheikhzadeh

2018

Journal of Industrial Textiles

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In this study, the effect of curvature on the flexural behavior of 3D integrated woven fabric composites was initially investigated. After optimizing the effect of curvature, two strengthening methods (thickening upper skin and foam-filling) were applied on curved 3D integrated woven fabric composites separately and simultaneously. Normalized-weight flexural properties were used as an efficiency index to analyze and compare the efficiency of both methods. Results showed that as curvature increases from 0 to 0.007 and 0.014 cm−1, peak load increases about 29.8 and 36.7%, respectively. In addition, as upper skin thickness increases, most of flexural properties increase and then decrease. Moreover, flexural properties improved by injecting polyurethane foam into the empty core. Furthermore, applying both methods on curved 3D integrated woven fabric composite sample made an outstanding improvement in flexural properties. That is, the flexural peak load, stiffness, and total energy absorption increased 244.4, 142.7, and 496.4%, respectively, in comparison to the unreinforced 3D integrated woven fabric composite sample. Based on the normalized results, it could be concluded that applying thickening upper skin and foam-filling the core methods separately have no considerable improvement in specific flexural properties; however, applying both methods simultaneously improved specific peak load and specific total energy absorption 35.3 and 134.1%, respectively.

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Static behavior of three-dimensional ıntegrated core sandwich composites subjected to three-point bending

Cited by 39 publications

References 31 publications

Üç Boyutlu Dokuma Kumaş Takvi̇yeli̇ Sandvi̇ç Kompozi̇tlerde Yüzeylerdeki̇ Elyaf Katman Sayisinin Eği̇lme Davranişina Etki̇si̇

Üç Boyutlu Dokuma Kumaş Takvi̇yeli̇ Sandvi̇ç Kompozi̇tlerde Yüzeylerdeki̇ Elyaf Katman Sayisinin Eği̇lme Davranişina Etki̇si̇

Determination of Mechanical Properties of Natural Sandwich Composites Produced by Using Waste Material

A parametric investigation into the flexural properties of singly curved composites reinforced with 3D-integrated woven fabrics

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