Results 341 to 350 of about 494,865 (358)

The Compressive Strength of Ceramics

1971
The literature on compressive strengths of crystalline ceramics, especially at room temperature, suggests that microplasticity may be the mechanism of much compressive failure since (2) the yield stress (microhardness/3) is the upper limit of both ambient and elevated temperature compressive strengths and (2) data on grain size dependence are ...
openaire   +2 more sources

Strengths of Glass Spheres in Compression

Journal of the American Ceramic Society, 1986
The strengths of individual glass spheres of a commercial soda‐lime‐silica composition were measured in diametral compression for an extensive range of sizes. Standard plots for a two‐parameter Weibull distribution yielded m values of ∼5 over a 400‐fold range of volumes corresponding to a 50‐fold range of surface areas.
S. Perrella, Richard C. Bradt, H. Nguyen, B.A. Kschinka   +3 more
openaire   +2 more sources

Compressive strength of electrotechnical porcelain [PDF]

Strength of Materials, 1979
1. It was established that cylindrical products made of unglazed porcelain (ratio of diameter to height ≈1/3) which operate under compression and whose end faces are glued into metal yokes have a load-bearing capacity and reliability that are 2.8 and 3.7 times, respectively, better than the analogous characteristics when porcelain rods are loaded by
openaire   +1 more source

Vickers hardness and compressive strength

Journal of the Mechanics and Physics of Solids, 1958
Abstract Hardness and compression tests are reported for a wide variety of materials. A simple empirical method for relating hardness number to the stress-strain curve is suggested. The correlation obtained leads to the conclusion that the Vickers test is not at all sensitive to yield stresses corresponding to compressive strains greater than 0.15.
openaire   +2 more sources

Compressive Strength of Compacted Snow [PDF]

Journal of the Air Transport Division, 1959
Study of mechanical strength of compacted snow to find methods of increasing load bearing capacity for airports and roads; tests indicate increase in strength with increasing density; snow compacted to density of about 0.60 kg/dm\U3\N may obtain average compressive strength of 10 kg/cm\U2\N at -- 15 C when loaded at rate of 3 mm/sec.
openaire   +1 more source

On compressive strength variation in concrete

Matériaux et Constructions, 1971
The interrelationship of the standard deviation, the coefficient of variation, and the compressive strength of concrete was studied on 32 building sites and 14 ready-mix plants, with more than 30,000 observations analysed. While the standard deviation was found to be practically strength-independent when overall values were considered, the coefficient ...
openaire   +2 more sources

Prediction of compressive strength of concrete

Matériaux et Constructions, 1974
The paper, which summarises a survey and an analysis of empirical strength laws, was undertaken with a view to formulating a strength law interrelating the water-cement ratio-which determines the porosity of the hardened cement-paste-and Powers's Gel/Space ratio, giving the relative strength of the cement stone.
openaire   +2 more sources

Nature of compression strength in concrete

Magazine of Concrete Research, 1992
A compression strength theory for concrete based on the capillary porosity of binder paste in concrete and the intrinsic tensional strength of the CSH gel is presented. The capillary pores were modelled as spheres of equal radius and the tensional stress peak on the surface of the voids was calculated using a FEM program.
openaire   +2 more sources

Compressive strength of materials

Journal of Applied Mechanics and Technical Physics, 1978
V. S. Nikiforovskii, M. M. Muzdakbaev
openaire   +2 more sources

The Crippling Strength of Compression Elements

Journal of the Aerospace Sciences, 1958
This paper consists of a review, primarily for the air-frame designer and stress analyst, of a new method of crippling strength analysis. Available test data on various aluminum, magnesium, and titanium alloys and steels are presented in terms of generalized parameters, based on the overall geometric configuration of the element and two mechanical ...
openaire   +2 more sources