Results 31 to 40 of about 58,501 (293)
Evaluate Brick Units by Ultrasonic Waves
Tikrit Journal of Engineering Sciences, 2005 Wide laboratory search was done to evaluate brick units in single, and test the prisms built from brick unit by use ultrasonic waves in non-destructive test. The results show that the pulse velocity increases with increasing compressive strength and time
Zain Al-Abdin Raouf +2 more
doaj +3 more sources
The study of ultrasonic pulse velocity on plain and reinforced damaged concrete
MATEC Web of Conferences, 2018 An ultrasonic pulse velocity (UPV) test is often applied to determine the quality of concrete structures. It is well known that there are several factors which can influence the reading of ultrasonic velocity in concrete.
Kencanawati Ni Nyoman +4 more
doaj +1 more source
Bioinspired low-frequency material characterisation [PDF]
, 2012 New-coded signals, transmitted by high-sensitivity broadband transducers in the 40–200 kHz range, allow subwavelength material discrimination and thickness determination of polypropylene, polyvinylchloride, and brass samples.
Assous, S. +7 more
core +3 more sources
Monolithic ultrasound fingerprint sensor. [PDF]
, 2017 This paper presents a 591×438-DPI ultrasonic fingerprint sensor. The sensor is based on a piezoelectric micromachined ultrasonic transducer (PMUT) array that is bonded at wafer-level to complementary metal oxide semiconductor (CMOS) signal processing ...
Boser, Bernhard E +7 more
core +1 more source
Comparatively Study of Non-Destructive test with different methods in various curing days [PDF]
E3S Web of ConferencesIn non-destructive testing, materials, components, or assemblies are inspected, tested, or evaluated without being destroyed. In nondestructive testing, materials, components, and assemblies are evaluated for quality and integrity without damaging them ...
Pahade Chandramohan +6 more
doaj +1 more source
Estimation of Mechanical and Durability Properties of Self-Compacting Concrete with Fibers Using Ultrasonic Pulse Velocity [PDF]
Journal of Rehabilitation in Civil Engineering, 2018 This study addressed the efficiency of ultrasonic pulse velocity (UPV) as a nondestructive test in concrete in estimating the mechanical (compressive and tensile strength) and durability (water absorption) properties of fiber-reinforced self-compacting ...
Masoud Fallahtabar Shiade +1 more
doaj +1 more source
An experimental study of particle sedimentation using ultrasonic speckle velocimetry [PDF]
, 2010 Ultrasonic speckle velocimetry (USV) is a non-invasive technique that allows the measurement of fluid velocity in flow and also that of powders under sedimentation.
Chinaud, Maxime +2 more
core +3 more sources
Journal 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
Density and Ultrasonic Pulse Velocity Investigation of Self-Compacting Carbon Fiber- Reinforced Concrete [PDF]
Engineering and Technology Journal, 2018 comprehensive research has been carried out to understand the effect of adding carbon fibers to density and ultrasonic pulse velocity of self-compacting concrete.
G.A. Salman
doaj +1 more source
Applied Sciences, 2021 This work aims to study the relationship between the compression resistance and velocity from ultrasonic pulses in samples of mortars with 25% of pozzolanic content.
Leticia Presa +2 more
doaj +1 more source