Browsing School of Mechatronic Engineering (Articles) by Author "hafiz@unimap.edu.my"

Now showing items 21-38 of 38

    • Optical tomography: Velocity profile measurement using orthogonal and rectilinear arrangements 

      Ruzairi, Abdul Rahim; Yusri, Mohd Yunosa; Mohd Hafiz Fazalul, Rahiman; Siti Zarina, Mohd Muji; Chiam, Kok Thiam; Herlina, Abdul Rahim (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 ...

    • A review of process tomography application in inspection system 

      Yasmin, Abdul Wahab; Ruzairi, Abdul Rahim, Prof. Dr.; Mohd Hafiz, Fazalul Rahiman, Dr.; Herlina, Abdul Rahim, Dr.; Suzanna, Ridhuan Aw; Juliza, Jamaludin; Naizatul Shima, Mohd Fadzil (Penerbit UTM Press, 2014)
      The inspection system is crucial to ensure the system is always in a good condition. A technique that can be used for inspection system is process tomography. By promising non-destructive approach; various types of process ...

    • A review of the optical tomography system 

      Juliza, Jamaludin; Ruzairi, Abdul Rahim, Prof. Dr. ; Herlina, Abdul Rahim, Dr.; Naizatul Shima, Mohd Fadzil; Mohd Hafiz, Fazalul Rahiman, Dr.; Mohd Fahajumi, Jumaah; Siti Zarina, Mohd Muji, Dr.; Mohd. Amri, Md Yunus, Dr. (Penerbit UTM Press, 2014)
      Tomography is a method that has been used for image reconstruction in the medical and engineering fields. Optical tomography is one of the various methods APPLIED in tomography systems. This tomography method is widely ...

    • A review of tomography system 

      Juliza, Jamaludin; Mohd Zikrillah, Zawahir; Ruzairi, Abdul Rahim, Prof. Dr. ; Fazlul Rahman, Mohd Yunus; Nor Muzakkir, Nor Ayob; Suzzana, Muhammad Ridzuan Aw; Naizatul Shima, Mohd Fadzil; Zulkarnay, Zakaria; Mohd Hafiz, Fazalul Rahiman, Dr. (Penerbit UTM Press, 2013)
      Tomography system is a method that being used to reconstruct a cross sectional image in vessel or pipeline. This method is widely used in medical and industrial fields. The aim of this paper is to provide an overview of ...

    • A review of ultrasonic application on non-destructive testing method for concrete structure 

      Nasarudin, Ahmad; Ruzairi, Abdul Rahim, Prof. Dr.; Herlina, Abdul Rahim, Dr.; Mohd Hafiz, Fazalul Rahiman, Dr. (Penerbit UTM Press, 2014)
      Although the technique of using ultrasound has reached maturity by given the extent of the development of sensors, but the use of the various areas still can be explore. Many types of ultrasonic sensors are still at ...

    • Segmented capacitance tomography electrodes: A design and experimental verifications 

      Elmy Johana, Mohamad, Dr.; Ruzairi, Abdul Rahim, Prof. Dr.; Leow, Pei Ling, Dr.; Mohd Hafiz Fazalul, Rahiman, Dr.; Omar Mohd Faizan, Marwah; Nor Muzakkir, Nor Ayob (Institute of Electrical and Electronics Engineers (IEEE), 2012-05)
      A segmented capacitance tomography system for real-time imaging of multiphase flows is developed and presented in this work. The earlier research shows that the electrical tomography (ECT) system is applicable in flow ...

    • Sensor modeling for portable Electrical Capacitance Tomography system using simulation by COMSOL Multiphysics 

      Elmy Johana, Mohamad, Dr.; Muhammad Afiq Zimam, Mohamed; Ruzairi, Abdul Rahim, Prof. Dr.; Leow, Pei Ling, Dr.; Mohd Hafiz Fazalul, Rahiman, Dr.; Khairul Hamimah, Abas; Salinda, Bunyamin (Innovative Computing, Information and Control (ICIC) International, 2012-10)
      This work presents the development process for modeling a 16-segmented portable ECT (Electrical Capacitance Tomography) sensor (using FEM software package COMSOL Multiphysics). The physical sensors are 3D dimensional but ...

    • Simulative study of two-phase homogenous and isotropic media imaging using magnetic induction tomography 

      Zulkarnay, Zakaria; Ibrahim, Balkhis; Lee, Pick Yern; Nor Muzakkir, Nor Ayob; Mohd Hafiz, Fazalul Rahiman, Dr.; Mohd Zikrillah, Zawahirah; Ruzairi, Abdul Rahim, Prof. Dr. (Penerbit UTM Press, 2014)
      Magnetic induction tomography is a new non-invasive technology, based on eddy current discovery of electromagnetic induction by Michael Faraday. Through this technique, the passive electrical properties distribution of an ...

    • Small gas component detection using ultrasonic transmission-mode tomography system 

      Nor Muzakkir, Nor Ayob; Muhammad Jaysuman, Pusppanathan; Ruzairi, Abdul Rahim, Prof. Dr.; Mohd Hafiz, Fazalul Rahiman, Dr.; Fazlul Rahman, Mohd Yunus; Zulkarnay, Zakaria; Goh, Chiew Loon; Salinda, Buyamin, Dr.; Nasarudin, Ahmad; Yusri, Md. Yunos, Dr.; Norhaliza, Abdul Wahab, Assoc. Prof. Dr. (Penerbit UTM Press, 2014)
      This paper presents the development of an ultrasonic transmission-mode tomography system for the detection of small gas components by using higher frequency ultrasonic transducers. The selection of the transducer is important ...

    • Study and Design of an Ultrasonic Flow Tomographic Front-End Multi Level Measurement System 

      Goh, Chiew Loon; Ruzairi, Abdul Rahim, Prof. Dr. ; Suzanna, Ridhuan Aw; Fazlul Rahman, Mohd Yunus; Nor Muzakkir, Nor Ayob; Mohd Hafiz, Fazalul Rahiman, Dr.; Anita, Ahmad, Dr.; Nasarudin, Ahmad; Khairul Hamimah, Abas (Penerbit UTM Press, 2014)
      With the rapid evolution of electro-acoustical technology, ultrasonic tomography has made considerable progress in industry. An ultrasonic tomography system provides non-invasive and non-intrusive flow visualisation that ...

    • A study of a two phases medium in pipe vessel using gaussian filter method and k-NN classifier 

      Mohd Rizal, Manan; Muhammad Naufal, Mansor; Ruzairi, Abdul Rahim; Sazali, Yaacob, Prof. Dr.; Mohd Hafiz, Fazalul Rahiman, Dr. (IOS Press, 2013-07-03)
      In this paper we present the existence and uniqueness of solutions to the stochastic problem to determine two phase level of gas and water in the industrial pipe line. In order to distinguish the level phases in a vessel ...

    • Study of the effect of brightness after penetration of light from a lens 

      Mohd Fahajumi, Jumaah; Mohd Zikrillah, Zawahir; Fazlul Rahman, Mohd Yunus; Ruzairi, Abdul Rahim, Prof. Dr.; Nor Muzakkir, Nor Ayob; Muhammad Saiful Badri, Mansor; Naizatul Shima, Mohd Fadzil; Zulkarnay, Zakaria; Mohd Hafiz, Fazalul Rahiman, Dr. (Penerbit UTM Press, 2013)
      There are many types of component that are able to produce light and the light is produced based on the angle and wavelength of the lens. Light penetration depends on the type of material used. The tests are done using ...

    • A study on forward and inverse problems for an ultrasonic tomography 

      Mohd Hafiz, Fazalul Rahiman, Dr.; Ruzairi, Abdul Rahim, Prof. Dr.; Herlina, Abdul Rahim, Dr.; Zulkarnay, Zakaria; Muhammad Jaysuman, Pusppanathan (Penerbit UTM Press, 2014)
      This paper studies the solution for inverse and forward problems for an ultrasonic tomography. Transmission-mode approach has been used for sensing the liquid/gas two-phase flow, which is a kind of strongly inhomogeneous ...

    • Study on wireless sensor based industrial tomography systems 

      Chiew, Loon Goh; Nor Muzakkir, Nor Ayob; Ruzairi, Abdul Rahim, Prof. Dr.; Herlina, Abdul Rahim, Dr.; Muhammad Jaysuman, Pusppanathan; Mohd Hafiz, Fazalul Rahiman, Dr.; Loew,  Pei Ling, Dr.; Zulkarnay, Zakaria (International Frequency Sensor Association Publishing (IFSA), 2013)
      Wireless sensor technologies are promising in the field of industrial tomography system, to visualize the cross-sectional images of an industrial flow process. The aim of the paper is to review the technical and scientific ...

    • Tomographic reconstruction of a multi-attenuation phantom by means of ultrasonic method 

      Mohd Hafiz, Fazalul Rahiman, Dr; Ruzairi, Abdul Rahim, Prof. Dr.; Herlina, Abdul Rahim, Dr. (Springer Science+Business Media B.V., 2012)
      This paper presents a work on tomography reconstruction of a multi-attenuation phantom by means of ultrasonic method. A transmission-mode approach has been used for the sensing modality. The reconstruction has been conducted ...

    • Ultrasonic tomography - image reconstruction algorithms 

      Mohd Hafiz, Fazalul Rahiman, Dr; Ruzairi, Abdul Rahim, Prof. Dr.; Herlina, Abdul Rahim, Dr.; Siti Zarina, Mohd Muji; Elmy Johana, Mohamad, Dr (International Journal of Innovative Computing, Information and Control (IJICIC), 2012-01)
      This paper focuses on image reconstruction algorithms for use in ultrasonic tomography. There are three types of algorithms namely Linear Back Projection, Hybrid Reconstruction and Hybrid Binary Reconstruction that are of ...

    • Ultrasonic tomography imaging for liquid-gas flow measurement 

      Muhammad Jaysuman, Pusppanathan; Nor Muzakkir, Nor Ayob; Fazlul Rahman, Mohd Yunus; Khairul Hamimah, Abbas; Herlina, Abdul Rahim, Dr.; Loew,  Pei Ling, Dr.; Ruzairi, Abdul Rahim, Prof. Dr. ; Fatin Aliah, Phang Abdullah, Dr.; Mohd Hafiz, Fazalul Rahiman, Dr.; Zulkarnay, Zakaria (International Frequency Sensor Association (IFSA), 2013)
      This research was carried out to measure two-phase liquid - gas flow regime by using a dual functionality ultrasonic transducer. Comparing to the common separated transmitter-receiver ultrasonic pairs transducer, the dual ...

    • Ultrasonic tomography imaging simulation of two-phase homogeneous flow 

      Mohd Hafiz Fazalul, Rahiman; Zulkarnay, Zakaria; Ruzairi, Abdul Rahim; Wei, Nyap Ng (Emerald Group Publishing Limited, 2009-09)
      Purpose - The purpose of this paper is to present an implementation of ultrasonic tomography simulation to investigate the laminar flow of stratified liquid between water and oil. Design/methodology/approach - The velocity ...