Mechanical behavior of a novel carbon-based nanostructured aluminum material

Erturk, Ahmet Semih; Yıldız, Yunus; Kırca, Mesut

doi:10.1016/j.commatsci.2017.12.033

Cited by 8 publications

(6 citation statements)

References 52 publications

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“…Erturk vd. [31] alüminyum bloklar arasına yerleştirilmiş kovalent olarak bağlı fulleren-grafen sandviç yapısından oluşan bir yapı oluşturup çekme ve basma gibi mekanik özelliklerini MD simülasyonları ile farklı fulleren boyutu ve yükleme hızlarında incelemiştir. Sonuç olarak, hem çekme hem de basma yüklemeleri için, fullerenlerin boyutu arttıkça hibrit yapının yükleme hızına çok daha duyarlı hale geldiği bulmuşlardır.…”

Section: Introductionunclassified

Pt-Al/Grafen-KNT Nanoyapılarının Mekanik Performansı; Bir Moleküler Dinamik Simülasyonu

Değirmenci

2023

DÜMF MD

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Metallerle karbon temelli yapıların bir araya getirilmesi ile oluşturulan hibrit nanokompozitler, malzeme bilimi ve mühendisliğinde heyecan verici bir araştırma alanı oluşturmuştur. Bu kompozitler, metallerin dayanıklılığı ile karbon bazlı yapıların hafiflik ve yüksek mukavemeti arasında bir denge sağlayarak benzersiz mekanik özelliklere sahip olurlar. Bu nedenle yeni Metal –Karbon nanoyapılarına eğilim halen devam etmektedir. Bu çalışmada, Platinyum ve alüminyum plakalar arasına yerleştirilen kovalent bağlı grafen- KNT yapılarından oluşan yeni bir Metal-Karbon nanoyapısı sunulmaktadır. Ayrıca, yapının mekanik özelliklerini ve altta yatan deformasyon mekanizmalarını araştırmak için, farklı çaplara sahip KNT (örn. KNT(6x6), KNT(8x8), KNT(10x10), KNT(12x12)) içeren numunelerin çekme ve basınç deneyleri gerçekleştirilir. Sonuçlara göre, G-KNT yapılarının Pt-Al yapısının çekme davranışını her iki doğrultuda (KNT ve Grafen) artırdığı görülmüştür. KNT doğrultusunda çekme yüklemeleri için KNT çapı azaldıkça hibrit yapıların elastik modülü ve maksimum gerilme değerleri artarken grafen doğrultusunda ise maksimum gerilme değerleri ve süneklikleri artmaktadır. Basma dayanımı açısından ise lineer bölgede genel olarak KNT çapı arttıkça dayanımın arttığı yoğunlaşma bölgesinde ise daha küçük çaplı KNT içeren yapıların daha iyi basma dayanımı sergilediği görülmüştür. Bu çalışma ile Pt-Al yapısına kıyasla daha hafif ve daha yüksek çekme dayanımına sahip bir nanoyapı sunulmuştur.

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Section: Introductionunclassified

Pt-Al/Grafen-KNT Nanoyapılarının Mekanik Performansı; Bir Moleküler Dinamik Simülasyonu

Değirmenci

2023

DÜMF MD

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“…[8][9][10][11][12][13] The mechanical properties and topological design of NPR honeycomb structures have been widely studied. [14][15][16][17][18] Numerous literature and works have proved the potential of NPR honeycomb structures in impact energy absorption through mechanical models [19][20][21][22] and experiments. [23][24][25][26] Grujicic et al 24 studied the dynamic impact response of sandwich structures filled with NPR.…”

Section: Introductionmentioning

confidence: 99%

The equivalent method of double V-wing honeycombs on the in-plane dynamic impact

Dian

Zhang

2021

Journal of Reinforced Plastics and Composites

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The double V-wing honeycomb can be applied in many fields because of its lower mass and higher performance. In this study, the volume, in-plane elastic modulus and unit cell area of the double V-wing honeycomb were analytically derived, which became parts of the theoretical basis of the novel equivalent method. Based on mass, plateau load, in-plane elastic modulus, compression strain and energy absorption of the double V-wing honeycomb, a novel equivalent method mapping relationship between the thickness–width ratio and the basic parameters was established. The various size factor of the equivalent honeycomb model was denoted as n and constructed by the explicit finite element analysis method. The mechanical properties and energy absorption performance for equivalent honeycombs were investigated and compared with hexagonal honeycombs under dynamic impact. Numerical results showed a well coincidence for each honeycomb under dynamic impact before 0.009 s. Honeycombs with the same thickness–width ratio had similar mechanical properties and energy absorption characteristics. The equivalent method was verified by theoretical analysis, finite element analysis and experimental testing. Equivalent honeycombs exceeded the initial honeycomb in performance efficiency. Improvement of performance and weight loss reached 173.9% and 13.3% to the initial honeycomb. The double V-wing honeycomb possessed stronger impact resistance and better load-bearing capacity than the hexagonal honeycomb under impact in this study. The equivalent method could be applied to select the optimum honeycomb based on requirements and improve the efficiency of the double V-wing honeycomb.

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“…One GIC example is the superconducting properties obtained by intercalating C 60 s and alkali metals into graphite [9]. As highlighted by Daukiya et al [10], this approach is being used in systems formed by graphene-metal [7,[11][12][13][14][15][16][17], graphene-MoS 2 layers [18] and a few layers of graphene [19][20][21], and is considered to be one of the newest methods to promote chemical reactions and catalysis at the nanoscale [22].…”

Section: Introductionmentioning

confidence: 99%

The structure of graphene on graphene/C₆₀/Cu interfaces: a molecular dynamics study

et al. 2019

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Two experimental studies reported the spontaneous formation of amorphous and crystalline structures of C60 intercalated between graphene and a substrate. They observed interesting phenomena ranging from reaction between C60 molecules under graphene to graphene sagging between the molecules and control of strain in graphene. Motivated by these works, we performed fully atomistic reactive molecular dynamics simulations to study the formation and thermal stability of graphene wrinkles as well as graphene attachment to and detachment from the substrate when graphene is laid over a previously distributed array of C60 molecules on a copper substrate at different values of temperature. As graphene compresses the C60 molecules against the substrate, and graphene attachment to the substrate between C60s ("C60S" stands for plural of C60) depends on the height of graphene wrinkles, configurations with both frozen and non-frozen C60s structures were investigated in order to verify the experimental result of stable sagged graphene when the distance between C60s is about 4 nm and height of graphene wrinkles is about 0.8 nm. Below the distance of 4 nm between C60s, graphene becomes locally suspended and less strained. We show that this happens when C60s are allowed to deform under the compressive action of graphene. If we keep the C60s frozen, spontaneous "blanketing" of graphene happens only when the distance between them are equal or above 7 nm. Both above results for the existence of stable sagged graphene for C60 distances of 4 or 7 nm are shown to agree with a mechanical model relating the rigidity of graphene to the energy of graphene-substrate adhesion. Although the studies of intercalation of molecules on interfaces formed by graphene-substrate are motivated by finding out ways to control wrinkling and strain in graphene, our work reveals the shape and structure of intercalated molecules and the role of stability and wrinkling on final structure of graphene. In particular, this study might help the development of 2D confined nanoreactors that are considered in literature to be the next advanced step on chemical reactions.

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Mechanical behavior of a novel carbon-based nanostructured aluminum material

Cited by 8 publications

References 52 publications

Pt-Al/Grafen-KNT Nanoyapılarının Mekanik Performansı; Bir Moleküler Dinamik Simülasyonu

Pt-Al/Grafen-KNT Nanoyapılarının Mekanik Performansı; Bir Moleküler Dinamik Simülasyonu

The equivalent method of double V-wing honeycombs on the in-plane dynamic impact

The structure of graphene on graphene/C₆₀/Cu interfaces: a molecular dynamics study

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Mechanical behavior of a novel carbon-based nanostructured aluminum material

Cited by 8 publications

References 52 publications

Pt-Al/Grafen-KNT Nanoyapılarının Mekanik Performansı; Bir Moleküler Dinamik Simülasyonu

Pt-Al/Grafen-KNT Nanoyapılarının Mekanik Performansı; Bir Moleküler Dinamik Simülasyonu

The equivalent method of double V-wing honeycombs on the in-plane dynamic impact

The structure of graphene on graphene/C60/Cu interfaces: a molecular dynamics study

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The structure of graphene on graphene/C₆₀/Cu interfaces: a molecular dynamics study