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Point load testing to more effectively measure bedrock strength
Nature Reviews Earth & Environment, 2021Kristin Chilton describes the use of point load testing in measuring bedrock strength and its application to geomorphology.
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The point-load strength test for concrete cores
Magazine of Concrete Research, 1980Synopsis The point-load test, commonly used in geotechnical practice, is evaluated for application in concrete testing. The method uses portable equipment to test concrete cores which require no further preparation after removal from the structure.
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Estimation of strength anisotropy using the point-load test
International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1983Abstract As most rocks are of an anisotropic nature, the measurement of the ratio between the maximum and minimum strength, i.e. the strength anisotropy, is of general interest. To measure the strength anisotropy by the uniaxial compression test, core specimens drilled in different directions are needed.
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Analytic Solutions for Diametral Point Load Strength Tests
Journal of Engineering Mechanics, 1998This paper investigates the tensile stress distribution within a solid circular cylinder of diameter \iD and length 2\iL subjected to double diametral indentors or diametral point load strength test (PLST). The contact problem between the indentors and the cylinder is solved analytically, and exact solution for stress distribution is obtained through ...
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A dynamic point-load test for quantifying rock dynamic strength parameters
Review of Scientific Instruments, 2017The point-load test (PLT) has been widely used in the field and in the laboratory to estimate the strength of rock materials. The PLT is easy and quick to perform and it is suitable for samples with irregular shapes and therefore has found wide applications.
Changyi, Yu +3 more
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Rock Mechanics and Rock Engineering, 2020
The point load strength index is a widely used index in rock engineering, and cylindrical core and irregular shaped specimens are used in its determination. But, in mine sites, the borehole cores are cut axially into two equal parts to obtain half-cut cores and one part of these half cores is sent to laboratory for geochemical analyses.
Merve Şahin +2 more
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The point load strength index is a widely used index in rock engineering, and cylindrical core and irregular shaped specimens are used in its determination. But, in mine sites, the borehole cores are cut axially into two equal parts to obtain half-cut cores and one part of these half cores is sent to laboratory for geochemical analyses.
Merve Şahin +2 more
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Point-load strength: An index for classification of rock material
Bulletin of the International Association of Engineering Geology, 1991Point-load strength (Is) as a measure for the determination of rock strength and for estimating uniaxial (unconfined) compressive strength (UCS) are described and both put together and used for rock strength classification of brittle and hard rocks. The estimated point-load strength values of specimens of varying sizes and also the values corrected to ...
D. K. Ghosh, M. Srivastava
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Strength determination of high-power LED die using point-load and line-load tests
Microelectronics Reliability, 2012Abstract The strength of high-power light emitting diode (LED) dies, cut from wafers with a laser, has to be determined for the need of design and quality control in order to assure the good reliability of packages in manufacturing and service. The objective of this study is to determine the strength of high-power LED die with a size of 1 × 1 × 0.1 ...
C.H. Chen, M.Y. Tsai
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Uniaxial compressive strength and point load strength of rocks
International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1996K.T. Chau, R.H.C. Wong
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The determination of uniaxial compressive strength from point load strength for pyroclastic rocks
Engineering Geology, 2014Abstract The point load test has often been reported as an indirect measure of compressive strength. It has been used widely in practice due to easy testing, the simplicity of specimen preparation, and possible field applications. Many researchers have investigated the relation between uniaxial compressive strength (UCS) and point load index (Is) for
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