Mohd Hafiz Fazalul Rahiman, Associate Professor Ir.Dr.: Recent submissions
Now showing items 41-60 of 69
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Hardware developments of an ultrasonic tomography measurement system
(International Frequency Sensors Association (IFSA), 2011-01)This research provides new technique in ultrasonic tomography by using ultrasonic transceivers instead of using separate transmitter-receiver pair. The numbers of sensors or transducers used to acquire data plays an important ... -
Optical tomography: Velocity profile measurement using orthogonal and rectilinear arrangements
(Elsevier Ltd., 2012-03)In tomography applications, flow velocity is an important flow characteristic for analysis. Excessively high particle velocity will cause high energy consumption, severe pipeline wear and particle degradation. This paper ... -
Optical tomography: A review on sensor array, projection arrangement and image reconstruction algorithm
(Kyushu Tokai University, 2011-07)This paper reviews previous research on sensor arrays, projection arrangements and image reconstruction algorithms of optical tomography for industrial processes. These include the review of sensor selection and projection ... -
Gas hold-up profiles measurement using ultrasonic sensor
(Institute of Electrical and Electronics Engineers (IEEE), 2011-02)In this letter, we present a work carried out to measure gas hold-up profiles in a liquid column using a pair of ultrasonic sensors. The gas hold-up profiles from 1.85 to 7.7 mm in diameter are of interest in this ... -
Optical tomography system based on charge-coupled device linear image sensors: Particle size measurement
(Elsevier B.V., 2011-08)This paper discussed an optical tomography system based on charge-coupled device (CCD) linear image sensors. The developed system consists of a lighting system, a measurement section and a data acquisition system. Four CCD ... -
Optical tomography system based on charge-coupled device linear image sensors: Particle size measurement
(Elsevier B.V, 2011-08)This paper discussed an optical tomography system based on charge-coupled device (CCD) linear image sensors. The developed system consists of a lighting system, a measurement section and a data acquisition system. Four CCD ... -
Quantifying scheme for detection heterogeneous phase in a pipe vessel
(Science Academy Publisher, 2011-03)This paper describes the different ultrasonic tomography for multiphase flow such as liquid/gas flow which commonly found in chemical columns and industrial pipelines. The information obtained through this research has ... -
Design and development fo a CCD based optical tomography measuring system for particle sizing identification
(Elsevier Ltd, 2011-07)This research investigates the use of charge coupled device (abbreviated as CCD) linear image sensors in an optical tomographic instrumentation system used for sizing particles. Four CCD linear image sensors are configured ... -
Simulation on using cross-correlation technique for two-phase liquid/gas flow measurement for Ultrasonic Transmission Tomography
(Institute of Electrical and Electronics Engineers (IEEE), 2010-05-21)Combining Ultrasonic Transmission Tomography (UTT) with the cross-correlation flow measurement technique can provide more information on the flow than usual. A simulated dual-plane UTT system for use on laboratory and ... -
Computed Tomography Virtual Lab Software application in Biomedical Electronic Engineering Programme at University Malaysia Perlis
(Universiti Malaysia PerlisSchool of Materials Engineering & School of Environmental Engineering, 2010-06-09)Computed Tomography (CT) is a medical imaging method and is among the common equipment or machine in a hospital which is vital in imaging certain parts of human body for the purpose of screening and detecting of deceases ... -
Analysis of magnetic coil properties in magnetic induction tomography using FEMM software
(Universiti Malaysia PerlisSchool of Materials Engineering & School of Environmental Engineering, 2010-06-09)In Magnetic Induction Tomography (MIT) application, the needs of having the best spec of magnetic coil are very important since this is among the factors that will provide the best reconstructed image of the object ... -
Ultrasonic tomography imaging for two-phase flow
(Universiti Malaysia Perlis (UniMAP)Pejabat Timbalan Naib Canselor (Penyelidikan dan Inovasi), 2008-07)Real-time process monitoring is important in many areas of industry and scienti c research concerning liquid/gas two-phase ow, and is closely related to accurate measurement and control of hydrodynamic parameters such ... -
Statistical time energy based damage detection in steel plates using artificial neural networks
(Institute of Electrical and Elctronics Engineering (IEEE), 2009-03-06)In this paper, a simple method for crack identification in steel plates based on statistical time energy is presented. A simple experimental procedure is also proposed to measure the vibration at different positions of a ... -
Damage detection in steel plates using artificial neural networks
(Institute of Electrical and Electronics Engineering (IEEE), 2009-06-04)In this paper, a simple method for crack identification in steel plates based on frame energy based Discrete Cosine Transformation (DCT) is presented. A simple experimental procedure is also proposed to measure the vibration ... -
Optical tomography system using digital signal processor: Velocity profile measurement
(Inderscience Enterprises Limited, 2009-06)The DSP system was customised to control the data acquisition process of 16 x 16 optical sensors array, arranged in parallel beam projection. The data collected was used to reconstruct the cross sectional image of the ... -
Modeling orthogonal and rectilinear mixed-modality projection of optical tomography for solid-particles concentration measurement
(Elsevier B. V., 2010-06)In optical tomography, light attenuation/scattering methods have been used to determine average solids concentrations in gas-solids flows. Derived from the Lambert-Beer law, the Mie theory forms the theoretical basis for ... -
The front-end hardware design issue in ultrasonic tomography
(IEEE, 2010-07)This paper explains the front-end hardware design for ultrasonic tomography. The ultrasonic tomography system presented in this paper uses a noninvasive sensing technique with transmission-mode approach for investigating ... -
Mathematical modelling of gas bubbles and oil droplets in liquid media using optical linear path projection
(Elsevier Ltd., 2010-05-05)This paper describes mathematical modelling of oil droplets and gas bubbles in water. The light sources that are discussed are visible light radiation and infrared radiation. Gas bubbles or oil droplets less than 1 mm ... -
Remote Oil Spillage Monitoring System
(Kementerian Pengajian Tinggi Malaysia (KPTM), 2007-08-10)Oil spills can destroy marine life as well as damaging habitat for land animals and humans. Majority of marine oil spills occurs from ships emptying their tanks before or after entering port. Large area oil spills are ... -
Oil Contamination Detection System (OCDS)
(Malaysian Invention and Design Society (MINDS), 2007-05-18)Oil Contamination Detection System (OCDS) is a novel and cost effective invention for illegal oil and grease emissions monitoring. OCDS will be immersed partially in the water by using a float.