Results 81 to 90 of about 6,690,883 (285)

Experimental study on the mechanical and acoustic emission features of frozen single fractured sandstone under drop hammer impact

open access: yesGong-kuang zidonghua
Mining rock masses in high-altitude cold regions can experience instability due to low temperature environments and dynamic load disturbances. Existing research mostly focuses on the static features of fractured sandstone under different freezing ...
HE Xinyao, CHANG Yuan, REN Fuqiang
doaj   +1 more source

Tensile Strength Modeling of Limestone Rocks in Sulaymaniyah City, Iraq Using Simple Tests

open access: yesPolytechnic Journal, 2019
Tensile strength of rocks is one of the mechanical properties of intact rock that is a significant parameter for designing geotechnical structures includes dam foundations and tunnels.
Diyari Abdulrahman Mohammed   +1 more
doaj   +1 more source

Uniaxial Compressive Strength of Antarctic Peninsula Rocks: Schmidt Hammer Rebound Test

open access: yesSains Malaysiana, 2017
The uniaxial compressive strength test is a destructive and time consuming test. A number of non-destructive methods using portable testing equipment are more applicable and easier to conduct. This paper presents the results of a systematic approach to determine the uniaxial compressive strength of rock material using the Schmidt hammer rebound test. A
Thian Lai Goh   +7 more
openaire   +1 more source

Item - Test Alternate Title

open access: yes
Item - Test Description ...
Item - Test Creator 1   +2 more
core   +1 more source

NDT assessment of existing concrete structures: spatial analysis of rebound hammer results recorded in-situ [PDF]

open access: yes, 2015
A comparative spatial analysis of surface hardness of structural concrete is introduced. Main objective of the paper is to make a repeatability comparison of three types of the still most popular non-destructive testing devices for concrete: L-type ...
Adorján Borosnyói   +1 more
core   +1 more source

Acoustic‐driven surface cleaning with millimeter‐sized bubbles at translational resonance

open access: yesDroplet, EarlyView.
Time‐lapse visualization comparing bubble trajectories. The top panel (0 Hz) shows a bubble's linear path under no acoustic forcing, while the bottom panel (50 Hz) demonstrates the oscillatory motion induced by acoustic waves at a resonance mode. This mechanism holds promising potential for applications such as surface cleaning.
Yan Jun Lin   +2 more
wiley   +1 more source

NDT-Based Condition Assessment and Structural Safety Evaluation of a Reinforced Cement Concrete Water Tank in a Coastal Region: A Case Study

open access: yesInfrastructures
Reinforced cement concrete (RCC) water tanks are essential for water storage and distribution facilities in every region. The durability and structural integrity of RCC water tanks are crucial to maintaining an uninterrupted water supply to the ...
Marakkath Nidhi   +2 more
doaj   +1 more source

Heterogeneity in the Rebound Eff ect – Further Evidence for Germany [PDF]

open access: yes
Rebound effects measure the behaviorally induced offset in the reduction of energy consumption following efficiency improvements. Using both panel estimation and quantile-regression methods on household travel diary data collected in Germany between 1997
Manuel Frondel   +2 more
core  

Compression of UCT and Rebound Hammer in determination of UCS on rock material / Siti Aishah Noh [PDF]

open access: yes, 2007
Uniaxial Compression Test (UCT) and Rebound Hammer Test are accepted rock mechanics testing procedure used to determine rock strength in geotechnical practice. Intact Limestones were collected at Pusat Geosains and Mineral Ipoh, Perak.
Noh, Siti Aishah
core  

Recent Advances of Perovskite Oxides for Air Pollution Control Chemistry: The Closed Loop From Design to Application

open access: yesEcoEnergy, EarlyView.
This review summarizes a descriptor‐guided framework for linking theoretical calculations, in situ/operando characterization, synthesis regulation, and application screening in functional materials. Emphasis is placed on dynamic structure–property relationships that enable low‐cost material design with enhanced activity, stability, and environmental ...
Yanyu Jin   +9 more
wiley   +1 more source

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