Thermal and mechanical properties of lightweight foamed concrete at elevated temperatures

2012 ◽  
Vol 64 (3) ◽  
pp. 213-224 ◽  
Author(s):  
Md Azree Othuman Mydin ◽  
Yong Chang Wang
Keyword(s):  
Mechanical Properties ◽  
Elevated Temperatures ◽  
Thermal And Mechanical Properties ◽  
Foamed Concrete

Thermal and mechanical properties of Al/Al2O3 composites at elevated temperatures

2012 ◽  
Vol 531 ◽  
pp. 18-27 ◽  
Author(s):  
Pradeep Gudlur ◽  
Adam Forness ◽  
Jonathan Lentz ◽  
Miladin Radovic ◽  
Anastasia Muliana
Keyword(s):  
Mechanical Properties ◽  
Elevated Temperatures ◽  
Thermal And Mechanical Properties

scholarly journals Influence of additives of tungsten oxide nanoparticles on the thermophysical and mechanical properties of polymer composite materials

2021 ◽  
Vol 1 (79) ◽  
pp. 55-61
Author(s):  
A. A. Agisheva ◽  
◽  
L. K. Tastanova ◽  
A. Z. Bekeshev ◽  
M. N. Umurzakov ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tungsten Oxide ◽  
Elevated Temperatures ◽  
Industrial Applications ◽  
Thermal And Mechanical Properties ◽  
Functional Additives ◽  
Tungsten Oxide Nanoparticles ◽  
Quality Of Products ◽  
The Stability

Tungsten containing particles as functional additives have high potential for the reinforcement of different materials, such as polymer-based resins. The thermal and mechanical properties of polymer composites with additions of tungsten oxide were investigated. Incorporation of 1% WO3 nanoparticles increases the Young‘s modulus. An increase in the stability of the materials at elevated temperatures and an improvement in the mechanical properties of the resins are observed. Tungsten containing nanoparticles increase the quality of products for industrial applications.

scholarly journals Thermal and mechanical properties of steel-fibre-reinforced concrete at elevated temperatures

1996 ◽  
Vol 23 (2) ◽  
pp. 511-517 ◽  
Author(s):  
T. T. Lie ◽  
V. K. R. Kodur
Keyword(s):  
Mechanical Properties ◽  
Thermal Properties ◽  
Reinforced Concrete ◽  
Fire Resistance ◽  
Elevated Temperatures ◽  
Steel Fibre ◽  
Fibre Reinforced Concrete ◽  
Thermal And Mechanical Properties ◽  
Steel Fibre Reinforced Concrete ◽  
Deformation Properties

For use in fire resistance calculations, the relevant thermal and mechanical properties of steel-fibre-reinforced concrete at elevated temperatures were determined. These properties included the thermal conductivity, specific heat, thermal expansion, and mass loss, as well as the strength and deformation properties of steel-fibre-reinforced siliceous and carbonate aggregate concretes. The thermal properties are presented in equations that express the values of these properties as a function of temperature in the temperature range between 0 °C and 1000 °C. The mechanical properties are given in the form of stress–strain relationships for the concretes at elevated temperatures. The results indicate that the steel fibres have little influence on the thermal properties of the concretes. The influence on the mechanical properties, however, is relatively greater than the influence on the thermal properties and is expected to be beneficial to the fire resistance of structural elements constructed of fibre-reinforced concrete. Key words: steel fibre, reinforced concrete, thermal properties, mechanical properties, fire resistance.

INFLUENCE OF TEMPERATURE-DEPENDENT RESIN BEHAVIOR ON NUMERICAL PREDICTION OF EFFECTIVE CTES OF 3D WOVEN COMPOSITES

2021 ◽  
Author(s):  
KOSTIANTYN VASYLEVSKYI ◽  
BORYS DRACH ◽  
IGOR TSUKROV
Keyword(s):  
Mechanical Properties ◽  
Thermal Properties ◽  
Epoxy Resin ◽  
Elevated Temperatures ◽  
Impact Resistance ◽  
Woven Composites ◽  
Nonlinear Dependence ◽  
Thermal And Mechanical Properties ◽  
Effective Coefficients ◽  
3D Woven Composites

3D woven composites are well known for their high strength, dimensional stability, delamination, and impact resistance. They are often used in aerospace, energy, and automotive industries where material parts can experience harsh service conditions including substantial variations in temperature. This may lead to significant thermal deformations and thermally-induced stresses in the material. Additionally, 3D woven composites are often produced using resin transfer molding (RTM) technique which involves curing the epoxy resin at elevated temperatures leading to accumulation of the processing-induced residual stress. Thus, understanding of effective thermal behavior of 3D woven composites is essential for their successful design and service. In this paper, the effective thermal properties of 3D woven carbon-epoxy composite materials are estimated using mesoscale finite element models previously developed for evaluation of the manufacturing-induced residual stresses. We determine effective coefficients of thermal expansion (CTEs) of the composites in terms of the known thermal and mechanical properties of epoxy resin and carbon fibers. We investigate how temperature sensitivity of the thermal and mechanical properties of the epoxy influences the overall thermal properties of the composite. The simulations are performed for different composite reinforcement morphologies including ply-to-ply and orthogonal. It is shown that even linear dependence of epoxy’s stiffness and CTE on temperature results in a nonlinear dependence on temperature of the overall composite’s CTE.

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