Comparative analysis of models for transverse conductivity for optimization of unidirectional hybrid composites

1994 ◽  
Vol 30 (1) ◽  
pp. 95-98 ◽  
Author(s):  
A. A. Smerdov
Keyword(s):  
Comparative Analysis ◽  
Hybrid Composites ◽  
Unidirectional Hybrid ◽  
Transverse Conductivity

scholarly journals Ply fragmentation in unidirectional hybrid composites linked to stochastic fibre behaviour: A dual-scale model

2019 ◽  
Vol 181 ◽  
pp. 107702 ◽  
Author(s):  
Francisco Mesquita ◽  
Yentl Swolfs ◽  
Stepan V. Lomov ◽  
Larissa Gorbatikh
Keyword(s):  
Hybrid Composites ◽  
Scale Model ◽  
Unidirectional Hybrid ◽  
Dual Scale

Comparative analysis of the mechanical and thermal properties of polyester and epoxy natural fibre-reinforced hybrid composites

2020 ◽  
pp. 002199832097681
Author(s):  
DKK Cavalcanti ◽  
MD Banea ◽  
JSS Neto ◽  
RAA Lima
Keyword(s):  
Mechanical Properties ◽  
Thermal Properties ◽  
Comparative Analysis ◽  
Hybrid Composites ◽  
Natural Fibre ◽  
Mechanical And Thermal Properties ◽  
Reinforced Composites ◽  
Thermoset Polymer ◽  
Thermal Stability Of ◽  
Fibre Reinforced Composites

In this work, a comparative analysis of the mechanical and thermal properties of polyester and epoxy single and hybrid natural fibre-reinforced composites was performed. Pure jute, jute + curauá and jute + sisal composites with two distinct thermoset polymer resins (an epoxy and a polyester) were produced. Tensile, flexural and impact tests were carried out, in accordance to ASTM standards, to investigate and compare the mechanical properties of the composites as a function of matrix and hybridization. In addition, a thermogravimetric analysis (TGA) was used to complete the comparative analysis of the thermal properties. Finally, a scanning electron microscopy (SEM) was used to examine the fracture surface of the tested specimens. It was found that the hybridization process improved the mechanical properties of the non-hybrid jute fibre based composites for both matrices used. The resin used as matrix plays an important role on the mechanical properties of the composites. The epoxy matrix based composites presented higher tensile strength, while the polyester based composites presented higher tensile and flexural stiffness as well as higher impact energy, when compared to the epoxy-based composite. TGA analysis showed that the thermal stability of epoxy-based composites was higher compared to the polyester-based composites.

Application of the V-Notch Shear Test for Unidirectional Hybrid Composites

2002 ◽  
Vol 36 (23) ◽  
pp. 2653-2666 ◽  
Author(s):  
Jianmei He ◽  
Martin Y.M. Chiang ◽  
Donald L. Hunston ◽  
Charles C. Han
Keyword(s):  
Shear Test ◽  
Hybrid Composites ◽  
Unidirectional Hybrid

A micromechanical approach to the viscoelasticity of unidirectional hybrid composites

Composites ◽  
1991 ◽  
Vol 22 (2) ◽  
pp. 113-119 ◽  
Author(s):  
L.E. Govaert ◽  
E.L.J.C.J. D'Hooghe ◽  
A.A.J.M. Peijs
Keyword(s):  
Hybrid Composites ◽  
Micromechanical Approach ◽  
Unidirectional Hybrid

Analytical hybrid effect prediction and evolution of the tensile response of unidirectional hybrid fibre-reinforced polymers composites for civil engineering applications

2020 ◽  
Vol 54 (22) ◽  
pp. 3205-3228
Author(s):  
Filipe Ribeiro ◽  
José Sena-Cruz ◽  
Fernando G Branco ◽  
Eduardo Júlio ◽  
Fernando Castro
Keyword(s):  
Yield Stress ◽  
Hybrid Composites ◽  
Damage Model ◽  
Strain Curve ◽  
Strength Distribution ◽  
Progressive Damage ◽  
Layer By Layer ◽  
Hybrid Effect ◽  
Unidirectional Hybrid ◽  
Progressive Damage Model

The performance of a progressive damage model in quantitative hybrid effect prediction of a comprehensive set of different 16 unidirectional interlayer (layer-by-layer) hybrid composites was assessed. Composites, produced by the hand lay-up method, made out of four different commercially available dry unidirectional fabric materials, namely high-modulus carbon, standard carbon, E-glass and basalt, were tested. Tensile tests on single fibres were performed in order to determine their Weibull strength distribution parameters, which were used as inputs of the progressive damage model. Reasonably good agreement between analytical and experimental hybrid effect results was obtained, which allowed to estimate satisfactorily the reference strengths of the unidirectional low strain composite materials. Next, an existing analytical model for the simulation of stress–strain curve of hybrid composites was adapted to contemplate the hybrid effect, which allowed to predict the following properties of unidirectional hybrid combinations: ‘yield’ stress (or pseudo-yield stress), pseudo-ductile strain and strength. It was verified as well that predictions of the three properties referred to were in close agreement with the test results. Finally, damage mode maps were used in the analysis of these properties and, furthermore, of the hybrid effect and the elastic modulus of hybrid combinations.

High-temperature strength and storage modulus in unidirectional hybrid composites

2006 ◽  
Vol 66 (13) ◽  
pp. 1963-1969 ◽  
Author(s):  
E.J. Bosze ◽  
A. Alawar ◽  
O. Bertschger ◽  
Yun-I. Tsai ◽  
S.R. Nutt
Keyword(s):  
High Temperature ◽  
Storage Modulus ◽  
Hybrid Composites ◽  
High Temperature Strength ◽  
Unidirectional Hybrid ◽  
And Storage

scholarly journals ADDITIONAL CHARACTERISTICS OF HYBRID COMPOSITES FOR FILLING TEETH UNDER LOCAL MOUNTING CLOCKS

2021 ◽  
pp. 29-36
Author(s):  
V.F. Makeev ◽  
V.S. Kukhta ◽  
O.S. Kyrmanov ◽  
V.R. Skalsky
Keyword(s):  
Tensile Strength ◽  
Comparative Analysis ◽  
Oral Cavity ◽  
Air Temperature ◽  
Hybrid Composites ◽  
Experimental Studies ◽  
Operating Conditions ◽  
Dental Composites ◽  
Local Loading ◽  
Ball Diameter

For the rational use of materials, it is necessary to have data on their ability to resist deformation and destruction. In particular, in each case it is necessary to have information on the stiffness, strength and resistance to destruction of materials in the specified operating conditions of the elements. To determine such strength characteristics of the material, certain studies are carried out. According to the analysis of literature sources in the study of dental composites mainly determine the tensile strength (bending) and compression [2-10], because it is subjected to restore materials during their operation in the oral cavity. The purpose of the study is to conduct a comparative analysis of the strength of hybrid composites of domestic and imported production during their local loading: Latelux (Latus, Ukraine), TETRIC N-CERAM (Ivoclar Vivadent, Liechtenstein), CHARISMA CLASSIC (Kulzer, Germany). To conduct research, 10 samples of each dental polymer composite were made. Packaging and molding of the material into a specially designed form was performed in laboratory conditions at an air temperature of 18 210 C with their subsequent polymerization with a LED photopolymer lamp Bluephase 20i (G2) (Ivoclar Vivadent). Before the test, the samples were kept for 24 hours at a temperature of 370 C in saline. The samples were loaded on the SVR-5 installation using a ball indenter (ball diameter mm steel SHX15, modulus of elasticity GPa, Poisson's ratio) with a speed of 0.002 mm/s. The purpose of the study is to conduct a comparative analysis of the strength of hybrid composites of domestic and imported production during their local loading. According to the results of experimental studies on the load of PB fracture, the Charisma Classic composite (5.72 ± 0.16 kN) has the highest strength, Latelux (4.23 ± 0.53 kN) the lowest, and Tetric N-Ceram (5, 03 ± 0.71 kN) occupies an intermediate position. To move the indenter, we obtained the following order of materials (in ascending order): Latelux (0.94 ± 0.11 mm); Charisma Classic (1.02 ± 0.04 mm); Tetric N-Ceram (1.03 ± 0.17 mm).

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