Mechanical Behavior of Three Sheet Molding Compounds

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.

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

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100052377 ◽

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.

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Mechanical Behavior of Materials

10.1017/cbo9780511810930 ◽

2005 ◽

Cited By ~ 143

Author(s):

William F. Hosford

Keyword(s):

Mechanical Behavior

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Mechanical behavior of ultrafine grained OFHC Cu at high strain rates

DYMAT 2009 - 9th International Conferences on the Mechanical and Physical Behaviour of Materials under Dynamic Loading ◽

10.1051/dymat/2009168 ◽

2009 ◽

Author(s):

L. J. Park ◽

H. W. Kim ◽

C. S. Lee ◽

K.-T. Park

Keyword(s):

Mechanical Behavior ◽

High Strain ◽

Strain Rates ◽

High Strain Rates ◽

Ultrafine Grained

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Micro-mechanical behavior of Al-MnO2-Epoxy under shock loading

DYMAT 2009 - 9th International Conferences on the Mechanical and Physical Behaviour of Materials under Dynamic Loading ◽

10.1051/dymat/2009222 ◽

2009 ◽

Cited By ~ 1

Author(s):

A. Fraser ◽

J. P. Borg ◽

J. L. Jordan ◽

G. Sutherland

Keyword(s):

Mechanical Behavior ◽

Shock Loading

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

Matériaux & Techniques ◽

10.1051/mattech/2020023 ◽

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.

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