Results 11 to 20 of about 72,306 (263)

Numerical Study on Single-Bubble Contraction–Rebound Characteristics in Cryogenic Fluids

open access: yesApplied Sciences, 2022
In cryogenic fluid storage and delivery, the rapid contraction and rebound of bubbles are prone to occur during bubble collapse due to the pressure saltation.
Shaohang Yan   +7 more
doaj   +1 more source

CNN-based Rolling Optimization Strategy for Prosumer Group in Demand Response

open access: yesZhongguo dianli, 2021
With the massive installation of distributed photovoltaics, a large number of prosumers with dual attributes of load and power supply have appeared. In the environment of electric power spot market, the decision mechanism of prosumers and electricity ...
Xudong ZHANG   +4 more
doaj   +1 more source

A Postoperative Phenomenon of Percutaneous Endoscopic Lumbar Discectomy: Rebound Pain

open access: yesOrthopaedic Surgery, 2021
Objective After percutaneous endoscopic lumbar discectomy (PELD), most patients with lumbar disc herniation (LDH) experience relief from the typical symptoms of low back and leg pain.
Chang Zhang   +3 more
doaj   +1 more source

Reliability of using nondestructive tests to estimate compressive strength of building stones and bricks

open access: yesAlexandria Engineering Journal, 2012
This study aims to investigate the relationships between Schmidt hardness rebound number (RN) and ultrasonic pulse velocity (UPV) versus compressive strength (fc) of stones and bricks.
Ali Abd Elhakam Aliabdo   +1 more
doaj   +1 more source

Rockwell Numbers and Rebounding Numbers of Steel Balls

open access: yesThe Journal of the Japan Institute of Metals, 1942
It has been a general practice that the C scale of Rockwell hardness tester was widely used to measure the hardness of steel balls. But, to acquire the true hardness number of steel balls, the relation between the hardness munber measured on the spherical surface and that on the plane surface should be considered.
Isida, Motomu, Iwasa, Toyozo
openaire   +2 more sources

A study on the dynamic behaviors of water droplets impacting nanostructured surfaces

open access: yesAIP Advances, 2011
We have investigated the influence of impact velocity and intrinsic surface wettability of nanostructures on the impact dynamic behaviors of water droplets on nanostructure surfaces.
Geunjae Kwak   +3 more
doaj   +1 more source

Estimation of uniaxial compressive and indirect tensile strengths of intact rock from Schmidt hammer rebound number

open access: yesJournal of the Mechanical Behavior of Materials, 2023
A number of destructive and non-destructive tests were conducted on rock samples collected from various zones in northern Iraq. So far, for Iraqi rocks, few studies have correlated Schmidt hammer rebound (R) with both unconfined compressive strength (UCS)
Fadhil Amjad Ibrahim   +2 more
doaj   +1 more source

Statistical Equations to Estimate the In-situ Concrete Compressive Strength from Non-destructive Tests

open access: yesJournal of Engineering, 2018
The aim of this study is to propose reliable equations to estimate the in-situ concrete compressive strength from the non-destructive test. Three equations were proposed: the first equation considers the number of rebound hummer only, the second equation
Ahmed Faleh Al-Bayati
doaj   +1 more source

Experimental Study on the Compressive Strength of Big Mobility Concrete with Nondestructive Testing Method

open access: yesAdvances in Materials Science and Engineering, 2012
An experimental study of C20, C25, C30, C40, and C50 big mobility concrete cubes that came from laboratory and construction site was completed. Nondestructive testing (NDT) was carried out using impact rebound hammer (IRH) techniques to establish a ...
Huai-Shuai Shang   +2 more
doaj   +1 more source

Compressive Strength Prediction Model of High Strength Concrete by Destructive and Nondestructive Technique [PDF]

open access: yesE3S Web of Conferences
Concrete’s compressive strength can be tested in a laboratory before construction begins. Since concrete is a natural material and cannot be destroyed, it is not possible to determine its compressive strength through destructive testing.
Singh Shobna   +6 more
doaj   +1 more source

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