Browsing Mohd Hafiz Fazalul Rahiman, Associate Professor Ir.Dr. by Author "Mohd Hafiz, Fazalul Rahiman"

Now showing items 1-20 of 28

    • Computed Tomography Virtual Lab Software application in Biomedical Electronic Engineering Programme at University Malaysia Perlis 

      Zulkarnay, Zakaria; Mohd Hafiz, Fazalul Rahiman; Saidatul Ardeenawati, Awang; Nur Farahiyah, Mohamad; Azian Azamimi, Abdullah; Ruzairi, Abdul Rahim (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 ...

    • Damage detection in steel plates using artificial neural networks 

      Paulraj, Murugesa Pandiyan, Prof. Madya; Mohd Shukri, Abdul Majid; Sazali, Yaacob, Prof. Dr.; Mohd Hafiz, Fazalul Rahiman; Krishnan, R. P. (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 ...

    • Damage detection in steel plates using discrete cosine transformation techniques and artificial neural network 

      Paulraj, M.P.; Mohd Shukry, Abdul Majid; Sazali, Yaacob; Mohd Hafiz, Fazalul Rahiman; R Pranesh, Krishnan (Universiti Malaysia Perlis, 2009-10-11)
      In this paper, a simple method for crack identification in steel plates based on the Frame Energy based Discrete Cosine Transformation [DCT] moments is presented. A simple experimental procedure is also proposed to measure ...

    • Design and development fo a CCD based optical tomography measuring system for particle sizing identification 

      Mariani, Idroas; Ruzairi, Abdul Rahim; Mohd Hafiz, Fazalul Rahiman; M. N., Ibrahim; Green, R. G. (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 ...

    • Development of parallel and fan-shaped beam mixed-projection optical tomography 

      Siti Zarina, Mohd. Muji, Dr.; Ruzairi, Abdul Rahim, Prof. Dr.; Mohd Hafiz, Fazalul Rahiman; Yusry, Yunus; Zulkarnay, Zakaria; Nor Muzakkir, Nor Ayub (International Frequency Sensor Association Publishing (IFSA), 2012-05)
      Parallel and fan shaped beam are two common projections that had been used widely in optical tomography system. These projections never have been merged before in the process of tomography area. In this paper, some ...

    • Electrical resistance tomography: a review of the application of conducting vessel walls 

      Suzanna, Ridzuan Aw; Ruzairi, Abdul Rahim; Mohd Hafiz, Fazalul Rahiman; Fazlul Rahman, Mohd Yunus; Goh, Chiew Loon (Elsevier, 2014-03)
      Despite decades of research, the study on tomography continues to be a subject of great scientific interest. Amongst all the kinds of tomography available, electrical resistance tomography (ERT) has been chosen as the field ...

    • FPGA technology in process tomography 

      Lean, Thiam Siow; Mohd Hafiz, Fazalul Rahiman; Ruzairi, Abdul Rahim; Mohd Shukry, Abdul Majid; Salman Sayyidi, Hamzah; Nur Atikah, Mat Ali; Vernoon, Ang Wei Neng; Syafiqah, Ishak; Thomas, Tan Wan Kiat (Penerbit UTM Press, 2016)
      The aims of this paper are to provide a review of the process tomography applications employing field programmable gate arrays (FPGA) and to understand current FPGA related researches, in order to seek for the possibility ...

    • Gas hold-up profiles measurement using ultrasonic sensor 

      Mohd Hafiz, Fazalul Rahiman; Ruzairi, Abdul Rahim, Prof. Dr.; Herlina, Abdul Rahim, Dr. (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 ...

    • Hardware developments of an ultrasonic tomography measurement system 

      Hudabiyah, Arshad Amari; Ruzairi, Abdul Rahim; Mohd Hafiz, Fazalul Rahiman; Herlina, Abd Rahim; Pusppanathan, Muhammad Jaysuman (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 ...

    • Homogeneous and Non-homogeneous media indentification and circuitry design of multiphase Ultrasonic Tomography 

      Mohd Rizal, Manan; Mohd Hafiz, Fazalul Rahiman; Sazali, Yaacob; Ruzairi, Abdul Rahim (Universiti Malaysia Perlis, 2009-10-11)
      Multiphase flow characterization is an important task for monitoring, measuring or controlling industrial processes. This can be done by means of process tomography. The use of tomographic techniques has been used within ...

    • Mathematical modelling of gas bubbles and oil droplets in liquid media using optical linear path projection 

      Ruzairi, Abdul Rahim; Yusri, Md Yunos; Mohd Hafiz, Fazalul Rahiman; Herlina, Abdul Rahim (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 ...

    • Modeling orthogonal and rectilinear mixed-modality projection of optical tomography for solid-particles concentration measurement 

      Ruzairi, Abdul Rahim; Mohd Hafiz, Fazalul Rahiman; Goh, C. L.; Muji, S. Z. M.; Rahim, H. A.; Yunos, Y. M. (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 ...

    • Multiphase ultrasonic tomography technique for homogeneous and Non-homogeneuos media identification 

      Mohd Rizal, Manan; Mohd Hafiz, Fazalul Rahiman; Sazali, Yaacob; Zulkarnay, Zakaria; Ruzairi, Abdul Rahim (Intel Tech Sdn. Bhd./Pac Tech Sdn. Bhd./Universiti Sains Malaysia (USM), 2009)
      Multiphase flow characterization is an important task for monitoring, measuring or controlling industrial processes. This can be done by means of process tomography. The use of tomographic techniques has been used within ...

    • Oil Contamination Detection System (OCDS) 

      Mohd Hafiz, Fazalul Rahiman; Abd. Haqi, Ibrahim; Mohd Taufik, Jusoh@Tajudin; Soh, Ping Jack; Ahmad Firdaus, Ahmad Zaidi (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.

    • Optical tomography system based on charge-coupled device linear image sensors: Particle size measurement 

      Idroas, M.; Ruzairi, Abdul Rahim; Mohd Hafiz, Fazalul Rahiman; Ibrahim, M. N. (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 

      Mariani, Idroas; Ruzairi, Abdul Rahim; Mohd Hafiz, Fazalul Rahiman; M. N., Ibrahim (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 ...

    • An optical tomography system using a digital signal processor 

      Ruzairi, Abdul Rahim; Chiam, Kok Thiam; Mohd Hafiz, Fazalul Rahiman (Molecular Diversity Preservation International (MDPI), 2008-03)
      The use of a personal computer together with a Data Acquisition System (DAQ) as the processing tool in optical tomography systems has been the norm ever since the beginning of process tomography. However, advancements in ...

    • Optical tomography system using digital signal processor: Velocity profile measurement 

      Ruzairi, Abdul Rahim; Chiam, Kok Thiam; Mohd Hafiz, Fazalul Rahiman; Yvette-Shan Li, Susiapan; Jayasuman, P. (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 ...

    • Optical tomography system: Application of Charge Coupled Device (CCD) for solid and transparent objects detection 

      Juliza, Jamaludin; Ruzairi, Abdul Rahim; Herlina, Abdul Rahim; Mohd Hafiz, Fazalul Rahiman; Siti Zarina, Mohd Muji; Mohd Fahjumi, Jumaah; Naizatul Shima, Mohd Fadzil; Chan, Kok San; Green, R.G. (Penerbit UTM Press, 2016)
      This research presents an application of Charge Coupled Device (CCD) linear sensor and laser diode in an optical tomography system. These optoelectronic sensors are believed to detect solid objects rather than transparent ...

    • Optical tomography: A review on sensor array, projection arrangement and image reconstruction algorithm 

      Siti Zarina, Mohd. Muji; Ruzairi, Abdul Rahim; Mohd Hafiz, Fazalul Rahiman; Shafishuhaza, Sahlan; Mohd Fadzli, Abdul Shaib; Muhammad, Jaysuman; Elmy Johana, Mohamad (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 ...