Raied Al-Lashi

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I received his PhD degree in the electronic engineering from the University of Nottingham, UK in 2012. Then I worked as a research fellow at Electronic and Computer Science (ECS), University of Southampton from 2013 to 2015 and as a postdoctoral research fellow in the School of Food Science and Nutrition at the University of Leeds for two years (2015-2017).From 2017 to 2018, I work as a senior lecturer in the Embedded System and Electronic, Engineering, Nottingham Trent university. Currently, I am working as a consultant at EmbeddedArt, Stockholm, Sweden.Publications-A Novel High Resolution Optical Instrument for Imaging Oceanic Bubbles. Al-Lashi RS, Gunn SR, Webb EG and Czerski H.IEEE Journal of Oceanic Engineering, 2017, 99, DOI:10.1109/JOE.2017.2660099-Automated Processing of Oceanic Bubble Images for measuring Bubble Size Distributions underneath Breaking Waves. Al-Lashi RS, Gunn SR and Czerski H, Journal of Atmospheric and Oceanic Technology, 2016, 33 (8), 1701-1714, DOI: http://dx.doi.org/10.1175/JTECH-D-15-0222.1-An integrated sensor platform for food reassurance. Povey MJW, Blakemore I, Al-Lashi R, Tiede C, Zou X, Huang X, Shi J and Yuen P, The journal of Institute of Food Science and Technology, 2016, 30 (1), 37-39-Ultrasonic Particle Sizing in Aqueous Suspensions of Solid Particles of Unknown Density. Al-Lashi RS and Challis RE, Journal of Acoustical Society of America, 2015, 138 (2), 1023-1029-Uncertainties in ultrasonic particle sizing in solid-in-liquid suspensions. Al-Lashi RS and Challis RE, IEEE Transactions on Ultrasonics, Ferroelectric, and Frequency Control, 2014, 61 (11), 1835-1845-Effective viscosity in a wave propagation model for ultrasonic particle sizing in non-dilute suspensions. Al-Lashi RS and Challis RE, Journal of Acoustical Society of America, 2014, 136 (4), 1583-1590-Ultrasonic attenuation measurements at very high SNR: Correlation, information theory and performance. Challis RE, Ivchenko V and Al-Lashi RS, Journal of Physics: Conference Series, 2013, 457, 012004
Address: Nottingham Trent University, Department of Engineering, Clifton Campus

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Olivier Jacquet

Commissariat à l'Energie Atomique (CEA)

CY Cergy Paris Université

Vladimir Ivchenko

University of Nottingham

Ahmet Arca

firdaus azlan

Mel Holmes

University of Leeds

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Papers by Raied Al-Lashi

Ultrasonic wave propagation in powders

Powder clumps (cakes) has a significant effect on the flowability and stability of powders. Powde... more Powder clumps (cakes) has a significant effect on the flowability and stability of powders. Powder caking is mainly caused by moisture migration due to wetting and environmental (temperature and humidity) changes. The process of moisture migration caking involves creating liquid bridges between the particles during condensation which subsequently harden to form solid bridges. Therefore, an effective and reliable technique is required to quantitatively and non-invasively monitor caking kinetics and effective stiffness. This paper describes two ultrasonic instruments (ultrasonic velocity pulse and airborne ultrasound systems) that have been used to monitor the caking phenomenon. Also, it discusses the relationship between the ultrasonic velocity and attenuation measurements and tracking caking kinetics and the effective stiffness of powders.

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A Novel High-Resolution Optical Instrument for Imaging Oceanic Bubbles

IEEE Journal of Oceanic Engineering, 2017

Automated Processing of Oceanic Bubble Images for measuring Bubble Size Distributions underneath Breaking Waves

Journal of Atmospheric and Oceanic Technology, 2016

Acoustic propagation and multiple scattering in powders

Journal of the Acoustical Society of America, 2016

Ultrasonic particle sizing in aqueous suspensions of solid particles of unknown density

The Journal of the Acoustical Society of America, 2015

Estimates of particle size distributions (PSDs) in solid-in-liquid suspensions can be made on the... more Estimates of particle size distributions (PSDs) in solid-in-liquid suspensions can be made on the basis of measurements of ultrasonic wave attenuation combined with a mathematical propagation model, which typically requires seven physical parameters to describe each phase of the mixture. The estimation process is insensitive to all of these except the density of the solid particles, which may not be known or difficult to measure. This paper proposes that an unknown density value is incorporated into the sizing computation as a free variable. It is shown that this leads to an accurate estimate of PSD, as well as the unknown density.

Effective viscosity in a wave propagation model for ultrasonic particle sizing in non-dilute suspensions

The Journal of the Acoustical Society of America, 2014

Estimates of particle size distributions (PSDs) in solid-in-liquid suspensions can be obtained fr... more Estimates of particle size distributions (PSDs) in solid-in-liquid suspensions can be obtained from measurements of ultrasonic wave attenuation. The technique is based on adaptively fitting theoretical wave propagation models to the measured data across a frequency range. These models break down at high solid concentrations and it is believed that this failure is due to the effective viscosity of the mixture in the vicinity of the particles being different from that of the continuous phase. This paper discusses PSD estimation when a number of different viscosity formulations are incorporated into the wave propagation model. The viscosity model due to Happel provides the best estimate of PSD in suspensions of medium concentration.