Mechanical Behavior of Three Sheet Molding Compounds

2009 ◽  
pp. 113-113-20 ◽  
Author(s):  
DE Walrath ◽  
DF Adams ◽  
DA Riegner ◽  
BA Sanders
Keyword(s):  
Mechanical Behavior ◽  
Molding Compounds

Effects of post-curing on the thermo-mechanical behavior and the chemical structure of highly filled phenolic molding compounds

2016 ◽  
Vol 58 (1) ◽  
pp. 56-62 ◽  
Author(s):  
Thomas Scheffler ◽  
Sascha Englich ◽  
Ulrich Heyne ◽  
Michael Gehde
Keyword(s):  
Mechanical Behavior ◽  
Chemical Structure ◽  
Molding Compounds

Influence of Solvent Absorption on the Mechanical Behavior of SMC Laminates

1995 ◽  
Vol 14 (9) ◽  
pp. 988-1007 ◽  
Author(s):  
I. Etxeberria ◽  
Franco A. J. C. Valea ◽  
R. Llano-Ponte ◽  
I. Mondragon
Keyword(s):  
Mechanical Behavior ◽  
Chemical Structure ◽  
Polyester Resin ◽  
Aging Treatment ◽  
Engine Oil ◽  
Molding Compounds ◽  
Solvent Uptake ◽  
Solvent Absorption ◽  
Effects Of Aging ◽  
Influence Of Solvent

The effects of aging on sheet molding compounds (SMC) by immersion in water at 100°C, hexane at 70°C, benzene at 80°C, and engine oil at 60°C, have been investigated for two laminates with different styrene contents. Tests have been conducted under the above conditions for 9 days in order to follow the liquid uptake, and for 30 days to know the variation on the mechanical properties. The overall weight gain was found to be dependent on the chemical structure of the solvent used, and it was clearly higher in both laminates for aging treatment including a solvent able to interact with the polyester resin. Differences on solvent uptake were subsequently reflected in the mechanical behavior. The amount of solvent absorbed in the laminates made from endomaged molding compounds was clearly higher, and subsequently poorer the mechanical behavior, than that for those containing a higher content of styrene. This has been attributed to the lower crosslink density and to a higher amount of defects in the materials made from compounds with a low content of styrene. The influence of solvent desorption on the mechanical behavior has also been analysed.

Application of TEM to Deformation, Wear, and Fracture of Ceramics

1974 ◽  
Vol 32 ◽  
pp. 472-473
Author(s):  
B. J. Hockey
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Mechanical Behavior ◽  
Brittle Materials ◽  
High Temperature Strength ◽  
Wide Range ◽  
Corrosive Environments ◽  
Further Development

Ceramics, such as Al2O3 and SiC have numerous current and potential uses in applications where high temperature strength, hardness, and wear resistance are required often in corrosive environments. These materials are, however, highly anisotropic and brittle, so that their mechanical behavior is often unpredictable. The further development of these materials will require a better understanding of the basic mechanisms controlling deformation, wear, and fracture.The purpose of this talk is to describe applications of TEM to the study of the deformation, wear, and fracture of Al2O3. Similar studies are currently being conducted on SiC and the techniques involved should be applicable to a wide range of hard, brittle materials.

The influence of the addition of ground olive stone on the thermo-mechanical behavior of compressed earth blocks

2020 ◽  
Vol 108 (2) ◽  
pp. 203
Author(s):  
Samia Djadouf ◽  
Nasser Chelouah ◽  
Abdelkader Tahakourt
Keyword(s):  
Thermal Conductivity ◽  
Compressive Strength ◽  
Mechanical Behavior ◽  
Agricultural Waste ◽  
Hydraulic Press ◽  
Dry Density ◽  
Olive Stone ◽  
Compressed Earth Blocks ◽  
Clay Matrix ◽  
Earth Blocks

Sustainable development and environmental challenges incite to valorize local materials such as agricultural waste. In this context, a new ecological compressed earth blocks (CEBS) with addition of ground olive stone (GOS) was proposed. The GOS is added as partial clay replacement in different proportions. The main objective of this paper is to study the effect of GOS levels on the thermal properties and mechanical behavior of CEB. We proceeded to determining the optimal water content and equivalent wet density by compaction using a hydraulic press, at a pressure of 10 MPa. The maximum compressive strength is reached at 15% of the GOS. This percentage increases the mechanical properties by 19.66%, and decreases the thermal conductivity by 37.63%. These results are due to the optimal water responsible for the consolidation and compactness of the clay matrix. The substitution up to 30% of GOS shows a decrease of compressive strength and thermal conductivity by about 38.38% and 50.64% respectively. The decrease in dry density and thermal conductivity is related to the content of GOS, which is composed of organic and porous fibers. The GOS seems promising for improving the thermo-mechanical characteristics of CEB and which can also be used as reinforcement in CEBS.

Sign in / Sign up

Export Citation Format

Share Document