Results 161 to 170 of about 1,873,474 (208)

Mechanical strength of silica aerogels

Journal of Non-Crystalline Solids, 1988
Abstract Pure silica aerogels are obtained by hypercritical evacuation of the solvent. The strength is measured by the three-point flexural test on monolithic parallelepipedic samples and by a diametral compression test on cylindrical samples. The stress-strain curve shows a perfect elastic behaviour and the “conchoidal” fracture morphology indicates
T. Woignier, J. Phalippou
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Mechanical strength of dental implants.

Journal of applied biomaterials & biomechanics : JABB, 2008
A series of mechanical strength tests have been carried out in order to characterize some dental implants. Most specimens tested were of the tapered-joint kind, but for comparison further tests have been carried out on screw-joined implants. The loads applied were similar to those existing in the typical working conditions of the component; however, in
ZONFRILLO, GIOVANNI, PRATESI, FRANCO
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Mechanical strength of GeSi alloy

Journal of Applied Physics, 1996
The characteristic mechanical behavior of bulk Ge1−xSix alloys with compositions x=0–0.4 grown by the Czochralski technique is investigated as a function of the composition and temperature by means of compressive deformation and is compared with that of elemental Ge and Si semiconductors. Both the yield stress and the flow stress at any strain increase
Ichiro Yonenaga, Koji Sumino
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Mechanical strength testing of compacted powders

International Journal of Pharmaceutics, 2001
Alternative test specimens for the determination of the fracture stress of brittle materials (eg. compacted powders) are described and discussed, and a statistical approach to the processing of strength test data is outlined.
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Mechanism of Strength Expression by Wet Strength Agents.

JAPAN TAPPI JOURNAL, 1998
Some applications such as tissue papers or filter papers require strength at wet even though paper orginally has weakness to water. For these applications, wet strength agents that meet such requirement are added to papers at the stage of pulp slurry.Namely, we have polyamide resin or melamine resin for the additives that give paper strength at wet ...
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Strength and Strengthening Mechanisms

1984
The strength of a material depends on various intrinsic and extrinsic factors. Although the most important is the chemical composition, the properties can be manipulated by altering the structure. Various mechanical, thermal, and surface treatments are used to create the desired balance of strength, hardness, and ductility.
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Mechanical Strength of Materials

2010
The response of materials to applied forces concerns a field of material properties which has been of prime interest to human beings since the emergence of mankind. Even as a child, already, one gathers experiences about what we vaguely call the “strength” of a material, by feeling with our fingers how “hard” or “soft” a specific material is.
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Mechanical strength of piezoelectric crystals

British Journal of Applied Physics, 1952
A direct mechanical method and an electrical method have been used to determine the mechanical strength of the piezoelectric materials sodium chlorate, sodium bromate, ammonium dihydrogen phosphate, ethylene diamine tartrate, and lithium sulphate monohydrate. New measurements have also been made on quartz as a check on the methods.
R Bechmann, P L Parsons
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Mechanical prestressing improves electrical strength

IEEE Electrical Insulation Magazine, 2002
There is a strong mechanical influence on the growth of electrical trees in electrical insulation resins. This is not to argue that electrical treeing is exclusively a mechanical phenomenon directly analogous to mechanical cracking. It is obviously an electrically driven process; no volts, no trees.
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Mechanical strength of ferroelectric ceramics

Ferroelectrics, 1978
Strength characteristics of ferroelectric ceramics possessing various internal biasing field values have been studied and the relation between mechanical strength and the ferroelectric state of the material has been determined. Anisotropy of the polarized ferroelectric ceramics mechanical strength has been studied.
A. A. Grekov, S. O. Kramarov
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