An experimental study of interlaminar shear fracture toughness of a nanotube reinforced composite

Abstract Duralcan F3S.xxS is a heat treatable aluminum alloy-matrix gravity composite. The base alloy is similar to Aluminum 359 (Alloy Digest Al-188, July 1969); the discontinuously reinforced composite is silicon carbide. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive strength as well as fracture toughness and fatigue. It also includes information on high temperature performance. Filing Code: AL-329. Producer or source: Alcan Aluminum Corporation.

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Efficient Improvement in Fracture Toughness of Laminated Composite by Interleaving Functionalized Nanofibers

Polymers ◽

10.3390/polym13152509 ◽

2021 ◽

Vol 13 (15) ◽

pp. 2509

Author(s):

Seyed Mohammad Javad Razavi ◽

Rasoul Esmaeely Neisiany ◽

Moe Razavi ◽

Afsaneh Fakhar ◽

Vigneshwaran Shanmugam ◽

...

Keyword(s):

Fracture Toughness ◽

Fracture Behavior ◽

Laminated Composite ◽

Carbon Phase ◽

Reinforced Composite ◽

Reinforcing Agent ◽

The Matrix ◽

As Stress ◽

Double Cantilever Beam Test ◽

Pan Nanofiber

Functionalized polyacrylonitrile (PAN) nanofibers were used in the present investigation to enhance the fracture behavior of carbon epoxy composite in order to prevent delamination if any crack propagates in the resin rich area. The main intent of this investigation was to analyze the efficiency of PAN nanofiber as a reinforcing agent for the carbon fiber-based epoxy structural composite. The composites were fabricated with stacked unidirectional carbon fibers and the PAN powder was functionalized with glycidyl methacrylate (GMA) and then used as reinforcement. The fabricated composites’ fracture behavior was analyzed through a double cantilever beam test and the energy release rate of the composites was investigated. The neat PAN and functionalized PAN-reinforced samples had an 18% and a 50% increase in fracture energy, respectively, compared to the control composite. In addition, the samples reinforced with functionalized PAN nanofibers had 27% higher interlaminar strength compared to neat PAN-reinforced composite, implying more efficient stress transformation as well as stress distribution from the matrix phase (resin-rich area) to the reinforcement phase (carbon/phase) of the composites. The enhancement of fracture toughness provides an opportunity to alleviate the prevalent issues in laminated composites for structural operations and facilitate their adoption in industries for critical applications.

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Experimental study of the quasi-static and dynamic fracture toughness of freshwater ice using notched semi-circular bend method

Engineering Fracture Mechanics ◽

10.1016/j.engfracmech.2021.107696 ◽

2021 ◽

pp. 107696

Author(s):

Yiheng Zhang ◽

Qing Wang ◽

Duanfeng Han ◽

Yanzhuo Xue ◽

Jia Qu ◽

...

Keyword(s):

Fracture Toughness ◽

Experimental Study ◽

Dynamic Fracture ◽

Dynamic Fracture Toughness ◽

Freshwater Ice

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Mechanochemical Synthesis and Rapid Consolidation of Nanocrystalline 3NiAl-Al2O3Composites

Journal of Nanomaterials ◽

10.1155/2011/793135 ◽

2011 ◽

Vol 2011 ◽

pp. 1-5 ◽

Cited By ~ 1

Author(s):

In-Jin Shon ◽

In-Yong Ko ◽

Seung-Hoon Jo ◽

Jung-Mann Doh ◽

Jin-Kook Yoon ◽

...

Keyword(s):

Mechanical Properties ◽

Fracture Toughness ◽

Mechanochemical Synthesis ◽

High Frequency ◽

Nanocrystalline Materials ◽

Physical And Mechanical Properties ◽

High Energy ◽

Reinforced Composite ◽

Energy Ball ◽

High Frequency Induction

Nanopowders of 3NiAl and Al2O3were synthesized from 3NiO and 5Al powders by high-energy ball milling. Nanocrystalline Al2O3reinforced composite was consolidated by high-frequency induction-heated sintering within 3 minutes from mechanochemically synthesized powders of Al2O3and 3NiAl. The advantage of this process is that it allows very quick densification to near theoretical density and inhibition grain growth. Nanocrystalline materials have received much attention as advanced engineering materials with improved physical and mechanical properties. The relative density of the composite was 97%. The average Vickers hardness and fracture toughness values obtained were 804 kg/mm2and 7.5 MPa⋅m1/2, respectively.

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