Results 11 to 20 of about 332,750 (308)

Factors influencing the performance of rebound hammer used for non-destructive testing of concrete members: A review

open access: yesCase Studies in Construction Materials, 2021
Non-destructive testing (NDT) has a vital role in finding surface hardness of concrete members. B-Proceq curve can calculate the concrete strength by providing statistical correlations between the destructive and the non-destructive strength.
Hemraj R. Kumavat   +2 more
doaj   +1 more source

Studi Evaluasi Pengaruh Variasi Mutu Beton Terhadap Kekuatan Struktur Beton Normal Menggunakan Metode Non-Destructive Test dan Destructive Test

open access: yesRekayasa Sipil, 2019
To make the examination of the strength of existing building structures easier, can be done by using the NDT methods. It is therefore a study related to the combination of NDT and DT methods to obtain better accuracy of the results.
Bagas Bhanu Aribawa   +2 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

Interrelated dataset of rebound numbers, ultrasonic pulse velocities and compressive strengths of drilled concrete cores from an existing structure and new fabricated concrete cubes

open access: yesData in Brief, 2023
Two test series were examined using nondestructive measuring methods by six independent laboratories before determining their compressive strength. The nondestructive test methods used were the rebound hammer and ultrasonic pulse velocity measurement ...
Daniel Gebauer   +11 more
doaj   +1 more source

Rebound hammer tests of high-strength concrete: Effects of internal stress and the shape of the impact area of the test specimens on the measurement results [PDF]

open access: yes, 2019
This study examines the factors affecting the results of non-destructive testing of high-strength concrete performed on cubes and on cylinders and examines the processing of calibration relations.
Bodnarová, Lenka   +2 more
core   +2 more sources

The Influence of the Rebound Hammer Test Location on the Estimation of Compressive Strength of a Historical Solid Clay Brick

open access: yesSolids, 2023
This paper presents the study of a two-hundred-year-old, demolded solid clay brick using the rebound hammer test for the estimation of the compressive strength. During the test, the location and face type influence on the rebound values are monitored and
Girum Mindaye Mengistu   +2 more
doaj   +1 more source

A Probabilistic Method for Constructing an Empirical Discrimination Model for Hammering Inspection of Cast-Iron Parts

open access: yesSICE Journal of Control, Measurement, and System Integration, 2019
A probabilistic method for constructing an empirical discrimination model to inspect defective cast-iron parts (such as graphite-spheroidized defective parts) by the hammering test is proposed.
Kenji Tamaki   +3 more
doaj   +1 more source

The differences in kinematic parameters of hammer throw finalists of the 2017 London athletics world cup [PDF]

open access: yesSportLogia, 2020
Hammer throw is motor-wise an extremely complex throwing discipline with the manifestation of several different forces that impede the rotational movement of the device and the thrower in the projected sagittal plane.
Ratko Pavlović   +2 more
doaj   +1 more source

Experimental study on dynamic pipe fracture in consideration of hydropower plant model

open access: yesWater Science and Engineering, 2009
In the case of sudden valve closure, water hammer creates the most powerful pressure and damage to pipeline systems. The best way to protect the pipeline system is to eliminate water hammer. The main reasons for water hammer occurrence are valve closure,
Kazumi Ishikawa   +4 more
doaj   +1 more source

A new anti-vibration hammer rust detection algorithm based on improved YOLOv7

open access: yesEnergy Reports, 2023
Anti-vibration hammer corrosion seriously endangers the safe operation of transmission lines. To better improve the detection effect of anti-vibration hammer corrosion on transmission lines under complex background, in this paper we propose an anti ...
Zhenbing Zhao   +3 more
doaj   +1 more source

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