Results 61 to 70 of about 1,549,653 (180)

THE EFFECT OF VARIATION CONCRETE CUBE OF AXIAL LOAD ON ULTRASONIC PULSE VELOCITY TRANSMITTER

open access: yesJournal of the Civil Engineering Forum, 2015
Nowadays, Non Destructive Tests have been applied in some quality evaluation of existing concretes on site. One of the Non Destructive Test (NDT) methods is the application of the Ultrasonic Pulse Velocity (UPV) method. In general, utilizations of UPV as
Faqih Ma’arif   +2 more
doaj   +1 more source

Ultrasonic Pulse Velocity Evaluation of Cementitious Materials

open access: yes, 2011
T. H. Panzera1, A. L. Christoforo1, F. P. Cota1, P. H. R. Borges2 and C. R. Bowen3 1Department of Mechanical Engineering, Federal University of Sao Joao del Rei UFSJ, Praca Frei Orlando, 170 Sao Joao Del Rei – MG, 2Department of Civil Engineering, Federal Centre for Technological Education of Minas Gerais, CEFET-MG, 3Materials Research Centre ...
Tulio H. Panzera   +4 more
openaire   +2 more sources

Investigation of ultrasonic properties of MAGIC gels for pulse-echo gel dosimetry

open access: yes, 2014
This thesis describes investigations into the design and evaluation of novel ultrasonic methods for 3-dimensional ionising radiation dose verification. Pulse-echo ultrasound methods were investigated for the measurement and analysis of complex radiation ...
Atkins, Timothy John
core   +1 more source

Pengaruh Variasi Umur Beton Terhadap Cepat Rambat Gelombang Dengan Menggunakan Metode Non Destructive Test

open access: yesRekayasa Sipil, 2019
Field testing is divided into 2 tests i.e. by destroying test structures or destructive tests and without destroying the structure or called a non-destructive test (NDT) One of them using the ultrasonic pulse rate (UPV).
Alif Iqbal Nur Hidayat   +2 more
doaj   +1 more source

Determination of the apparent porosity level of refractory concrete during a sintering process using an ultrasonic pulse velocity technique and image analysis [PDF]

open access: yesChemical Industry and Chemical Engineering Quarterly, 2010
Concrete which undergoes a thermal treatment before (pre-casted concrete blocks) and during (concrete embedded in-situ) its life-service can be applied in plants operating at high temperature and as thermal insulation. Sintering is a process which occurs
LJUBICA M. PAVLOVIĆ, ANJA M. TERZIĆ
doaj  

Modelling and evaluation of pulsed and pulse phase thermography through application of composite and metallic case studies [PDF]

open access: yes, 2014
A transient thermal finite element model has been created of the pulsed thermography (PT) and pulse phase thermography (PPT) experimental procedure.
Waugh, R., Quinn, S., Barton, J.M.
core   +1 more source

Lagrangian measurements of turbulent dissipation over a shallow tidal flat from pulse coherent Acoustic Doppler Profilers [PDF]

open access: yes, 2012
We present high resolution (25 mm spatial, 8 Hz temporal) profiles of velocity measured over a shallow tidal flat using pulse-coherent Acoustic Doppler Profilers mounted on surface drifters.
Mullarney, Julia C.   +3 more
core   +1 more source

Position and velocity recovery from independent ultrasonic beacons [PDF]

open access: yes, 2006
In this paper we present a study on how to estimate the position of a mobile receiver using ultrasonic beacons fixed in the environment. Unlike traditional approaches, the ultrasonic beacons are independent, and positioning is performed by measuring the ...
Wilson, RE   +3 more
core  

ANALYSIS OF THE INFLUENCE OF TRANSDUCER FREQUENCY ON THE ULTRASONIC MEASUREMENT OF CONCRETE HOMOGENEITY

open access: yesActa Polytechnica CTU Proceedings, 2019
The paper analyses the influence of transducer frequency on the determination of concrete homogeneity using the ultrasonic pulse velocity test. Transit time measurements were made on a 590×590mm concrete slab, with 110mm in thickness, in a raster of 5×5 ...
Dalibor Kocáb   +4 more
doaj   +1 more source

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