Characterizing delamination toughness of laminated composites containing carbon nanotubes: Experimental study and stochastic multi-scale modeling

2021 ◽  
Vol 201 ◽  
pp. 108487
Author(s):  
Roham Rafiee ◽  
Mostafa Sahraei
Keyword(s):  
Carbon Nanotubes ◽  
Experimental Study ◽  
Laminated Composites ◽  
Multi Scale ◽  
Scale Modeling ◽  
Delamination Toughness ◽  
Multi Scale Modeling

Multi-scale modeling and experimental study of fatigue of plain-woven SiC/SiC composites

2021 ◽  
pp. 106725
Author(s):  
Hongnian Dong ◽  
Xiguang Gao ◽  
Sheng Zhang ◽  
Guoqiang Yu ◽  
Yingdong Song ◽  
...  
Keyword(s):  
Experimental Study ◽  
Multi Scale ◽  
Scale Modeling ◽  
Multi Scale Modeling ◽  
Sic Composites

On Multi-Scale Modeling of Elastomeric Laminated Composites for Structural Analysis

2006 ◽  
Vol 79 (2) ◽  
pp. 217-232
Author(s):  
Mark R. Gurvich
Keyword(s):  
Effective Properties ◽  
Laminated Composites ◽  
Complex Structures ◽  
Rubber Composites ◽  
Hyperelastic Materials ◽  
Multi Scale ◽  
Scale Modeling ◽  
Computational Implementation ◽  
Multi Scale Modeling ◽  
Elastomeric Composites

Abstract Analysis of complex structures is often based on multi-scale modeling, where effective properties of certain substructures are used instead of actual properties of smaller components. Laminated composites are usually considered as such sub-structures in components with laminated design. In case of elastomeric composites, well-known classical laminate theories could hardly be used due to significant non-linearity and incompressibility of material deformation. A convenient engineering variant of laminated model is proposed in this study for composites where neither physical nor geometrical non-linearity may be ignored. Possible material incompressibility is also taken into account. The model is primarily based on a previously developed constitutive approach to describe effective properties of anisotropic hyperelastic materials. Analytical and computational implementation of the model is considered in detail. Numerical examples illustrate accuracy and convenience of the model for representative cord/rubber composites.

Micro-mechanical failure prediction of radar-absorbing structure dispersed with multi-walled carbon nanotubes considering multi-scale modeling

2017 ◽  
Vol 52 (12) ◽  
pp. 1649-1660 ◽  
Author(s):  
Young-Woo Nam ◽  
Jae-Hwan Shin ◽  
Jae-Hun Choi ◽  
Hyun-Seok Kwon ◽  
Jae-Sung Shin ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Polymer Matrix ◽  
Volume Element ◽  
Mechanical Failure ◽  
Multi Scale ◽  
Scale Modeling ◽  
Multi Walled Carbon Nanotubes ◽  
Multi Scale Modeling ◽  
Radar Absorbing Structure ◽  
Walled Carbon Nanotubes

Conventional radar-absorbing structure is typically manufactured with high weight percentage (wt.%) of carbonaceous nano-conductive particles in the polymer matrix to tailor its microwave absorbing performance. However, these manufacturing methods have some physical limitations with regard to fabrication, due to the high viscosity in the polymer matrix and, inhomogeneous in mechanical and electrical properties. No study has been conducted with micro-mechanical failure prediction of radar-absorbing structure dispersed with multi-walled carbon nanotubes. In order to address these limitations, radar-absorbing structures dispersed with multi-walled carbon nanotubes were designed in the Ku-band (12.4–18 GHz). Additionally, to establish and verify the micro-mechanical failure analysis based on multiscale modeling, finite element analysis was carried out using the Mori–Tanaks mean-field homogenization model within the representative volume element model in the microstructure. In order to verify the Hashin criteria of radar-absorbing structure dispersed with multi-walled carbon nanotube (0.5 wt.%, 1.0 wt.% and 1.5 wt.%), mechanical tests (tensile, compressive and shear test) were conducted according to ASTM standards. In this paper, radar-absorbing structure with irregularly arranged filler and matrix with representative volume element was modeled from the micro-mechanical point of view and the results from Hashin failure criterion were verified both by simulations and experimental results of prediction strengths within the expected error range (lower than 6%). The reliability of application in micro-mechanical prediction of radar-absorbing structure was confirmed considering the multi-scale modeling.

Multi-Scale Modeling and Experimental Study of the Strength of Plain-Woven SiC/SiC Composites

2019 ◽  
Vol 26 (5-6) ◽  
pp. 1333-1348 ◽  
Author(s):  
Xiguang Gao ◽  
Hongnian Dong ◽  
Sheng Zhang ◽  
Yingdong Song
Keyword(s):  
Experimental Study ◽  
Multi Scale ◽  
Scale Modeling ◽  
Multi Scale Modeling ◽  
Sic Composites
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