Insitu multiscale analysis of fracture mechanisms in nanocomposites

被引：9

作者：

Boesl, Benjamin P. ^{[1
]}

Bourne, Gerald R. ^{[2
]}

Sankar, Bhavani V. ^{[3
]}

机构：

[1] USA, Res Lab, RDRL WMM B, Aberdeen Proving Ground, MD 21005 USA

[2] Univ Florida, Dept Mat Sci & Engn, Gainesville, FL 32611 USA

[3] Univ Florida, Dept Mech & Aerosp Engn, Gainesville, FL 32611 USA

来源：

COMPOSITES PART B-ENGINEERING | 2011年 / 42卷 / 05期

关键词：

Particle reinforcement; Fracture toughness; FEA; Insitu testing; CARBON NANOTUBES; POLYMER NANOCOMPOSITES; COMPOSITES; REINFORCEMENT; TOUGHNESS;

D O I：

10.1016/j.compositesb.2011.03.009

中图分类号：

T [工业技术];

学科分类号：

120111 [工业工程];

摘要：

Toughening mechanisms in hard, metal oxide nanoparticle reinforced epoxy systems were analyzed using a multi-scale approach. Samples on varying scales were fabricated using a shear mixing device and the dispersion of the particles was characterized. On the macro-scale, four-point bend testing showed a maximum of an 80% increase in fracture toughness over neat resin samples for composites with low filler volume percents. Novel testing completed within the chamber of a focused ion beam provided insight into the mechanisms of fracture on the microscale, providing validation of the existence of micro-cracking and crack pinning in the material. Further analysis of the results was coupled with finite element analysis to determine the feasibility of proposed fracture mechanisms, providing insight for the direction of future analysis. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：1157 / 1163

页数：7

共 22 条

[1]

*ABAQUS, 2006, ABAQUS THEOR MAN US

[2]

ANDERSON TL, 1995, FRACTURE MECH FUNDAM, P668

[3]

Polymeric nanocomposites for tribological applications [J].

Burris, David L. ;

Boesl, Benjamin ;

Bourne, Gerald R. ;

Sawyer, W. Gregory .

MACROMOLECULAR MATERIALS AND ENGINEERING, 2007, 292 (04) :387-402

[4]

Multi-scale mechanics of nanocomposites including interface: Experimental and numerical investigation [J].

Buryachenko, VA ;

Roy, A ;

Lafdi, K ;

Anderson, KL ;

Chellapilla, S .

COMPOSITES SCIENCE AND TECHNOLOGY, 2005, 65 (15-16) :2435-2465

[5]

Computational materials: Multi-scale modeling and simulation of nanostructured materials [J].

Gates, TS ;

Odegard, GM ;

Frankland, SJV ;

Clancy, TC .

COMPOSITES SCIENCE AND TECHNOLOGY, 2005, 65 (15-16) :2416-2434

[6]

Influence of different carbon nanotubes on the mechanical properties of epoxy matrix composites - A comparative study [J].

Gojny, FH ;

Wichmann, MHG ;

Fiedler, B ;

Schulte, K .

COMPOSITES SCIENCE AND TECHNOLOGY, 2005, 65 (15-16) :2300-2313

[7]

HELICAL MICROTUBULES OF GRAPHITIC CARBON [J].

IIJIMA, S .

NATURE, 1991, 354 (6348) :56-58

[8]

Fabrication, microstructure and mechanical properties of Al2O3/Ni nanocomposites by a chemical method [J].

Li, GJ ;

Huang, XX ;

Guo, JK .

MATERIALS RESEARCH BULLETIN, 2003, 38 (11-12) :1591-1600

[9]

Fracture toughness and water uptake of high-performance epoxy/nanoclay nanocomposites [J].

Liu, WP ;

Hoa, SV ;

Pugh, M .

COMPOSITES SCIENCE AND TECHNOLOGY, 2005, 65 (15-16) :2364-2373

[10]

Transmission electron microscopy observations of fracture of single-wall carbon nanotubes under axial tension [J].

Lourie, O ;

Wagner, HD .

APPLIED PHYSICS LETTERS, 1998, 73 (24) :3527-3529

← 1 2 3 →