Results 11 to 20 of about 9,253,451 (277)

Moving load on elastic structures: Passage through the wave speed barriers [PDF]

open access: yes, 2010
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The asymptotic behaviour of an elastically supported infinite string and an elastic isotropic half plane (in frames of specific asymptotic model) under a ...
Voloshin, Vitaly
core   +7 more sources

Estimation of Uniaxial Compressive Strength and Tensile Strength of Sandstone Based on Point Load

open access: yesRenmin Zhujiang
In rock mechanics and engineering practice, accurate and rapid evaluation of uniaxial compressive strength and tensile strength of rock is important for engineering design and construction safety. Traditional test methods are time-consuming and laborious,
LIU Yongzhi   +5 more
doaj   +3 more sources

Distribution characteristics of the point load strength index of irregular ore rock samples in deep mines

open access: yes工程科学学报, 2023
The frequent occurrence of core disking in boreholes under high in-situ stress in deep rock engineering leads to the difficulty in intact core sampling on sites.
Di-yuan LI   +4 more
doaj   +1 more source

Determining the strength index of coal from the Brod - Gneotino deposit, Bitola [PDF]

open access: yesMining and Metallurgy Engineering Bor, 2018
The Point Load Test (PLT) was performed in the geomechanical laboratory of the MMI Bor, in order to determine the strength index of coal samples from the Brod - Gneotino, Bitola, Republic of Macedonia. On the basis of the obtained results, it is possible
Tašić Dušan   +2 more
doaj   +1 more source

Correlation Study Between Point Load Test And Uniaxial Compressive Strength and Tensile Strength of Some Sedimentary Rocks In Mosul City [PDF]

open access: yesEngineering and Technology Journal, 2012
The point load test is used as a quick and inexpensive means of obtaining rock strength indexes when logging core samples in either a field or laboratory setting.
Thamer M. Nuri   +2 more
doaj   +1 more source

Non-Linear Instability of Pin-Ended Functionally Graded Material Arches Under Locally Distributed Radial Loads

open access: yesFrontiers in Materials, 2022
The arch is a common structural form in bridge engineering; its collapse is often caused by instability. In this article, in-plane nonlinear instability of pin-ended functionally graded material (FGM) arches with two cross-sectional types under local ...
Jinman Zhou   +5 more
doaj   +1 more source

Analysis of failure behaviour of the anisotropic rocks in the point load index test

open access: yesIOP Conference Series: Earth and Environmental Science, 2021
Abstract The strength and deformational behaviour of rocks under loading conditions are important in underground excavations, mining and every civil engineering constructions as it determines the stability of such structures. This study aims to augment the existing know-how on such behaviour through analysis of point load tests conducted
D Acharya   +3 more
openaire   +1 more source

Research on the Conversion Relationship between Dynamic Point Load Strength and Dynamic Compressive Strength Based on Energy System

open access: yesShock and Vibration, 2022
Point load test is a simple and fast method to obtain the compressive strength of rock. According to the maximum load at failure and the distance between two cone ends, the compressive strength of specimens can be calculated by the empirical formula ...
Ming Zhou   +4 more
doaj   +1 more source

Modelling of phosphorus inputs to rivers from diffuse and point sources. [PDF]

open access: yes, 2008
The difference in timing of point and diffuse phosphorus (P) delivery to a river produces clear differences in the P concentration – flow relationship.
Bowes, M.   +7 more
core   +1 more source

PREDICTION OF UNCONFINED COMPRESSIVE STRENGTH OF ROCKS BY POINT LOAD STRENGTH INDEX [PDF]

open access: yesJournal of Al-Azhar University Engineering Sector, 2019
The point load testing is widely used to determine rock strength indeces in geotechnicalpractices as a result to simplicity. The present study presents correlation equations betweenthe unconfined compressive strength (qu) and point load strength index Is(50) adopted fordifferent types of rocks.
Mohamed mohamed   +2 more
openaire   +1 more source

Home - About - Disclaimer - Privacy