Browsing School of Mechatronic Engineering (Articles) by Subject "Ultrasonic tomography"

Now showing items 1-12 of 12

    • Design and modelling of ultrasonic tomography for two-component high-acoustic impedance mixture 

      Mohd Hafiz, Fazalul Rahiman; Ruzairi, Abdul Rahim; Zulkarnay, Zakaria (Elsevier B.V., 2008-10)
      This paper describes the design and modelling of ultrasonic tomography for two-component high-acoustic impedance mixture such as liquid/gas and oil/gas flow which commonly found in chemical columns and industrial pipelines. ...

    • Edge detection algorithm for enhancement of linear back projection tomographic images 

      Muhammad Jaysuman, Pusppanathan; Mahdi Faramarzi; Fazlul Rahman, Mohd Yunus; Nor Muzakkir, Nor Ayob; Ruzairi, Abdul Rahim, Prof. Dr.; Fatin Aliah, Phang Abdullah, Dr.; Usman Ullah, Sheikh, Dr.; Loew,  Pei Ling, Dr.; Khairul Hamimah, Abas; Mohd Hafiz, Fazalul Rahiman, Dr.; Shafishuhaza, Sahlan (Penerbit UTM Press, 2014)
      Process tomography (PT) is a leading technique for multiphase flow measurement and flow monitoring systems in various fields. PT has the advantage of interpreting acquired measurement data and transforming it into visual ...

    • The front-end hardware design issue in ultrasonic tomography 

      Mohd. Hafiz, Fazalul Rahiman; Rahim, R. A.; Mohd Nasir, Ayob (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 ...

    • The hardware design technique for ultrasonic process tomography system 

      Mohd Hafiz, Fazalul Rahiman, Dr.; Ruzairi, Abdul Rahim, Prof. Dr.; Herlina, Abdul Rahim, Dr.; Nor Muzakkir, Nor Ayob (International Frequency Sensor Association Publishing (IFSA), 2012-06)
      This paper describes a work carried out to design and development an ultrasonic process tomography system. The hardware design technique is of interest of this paper. A number of 32-ultrasonic transducers have been ...

    • 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 ...

    • Novel adjacent criterion method for improving ultrasonic imaging spatial resolution 

      Mohd Hafiz, Fazalul Rahiman, Dr; Ruzairi, Abdul Rahim, Prof. Dr.; Herlina, Abdul Rahim, Dr.; Nor Muzakkir, Nor Ayob (Institute of Electrical and Electronics Engineers (IEEE), 2012)
      In this letter, we present a novel approach for improving spatial resolution in ultrasonic tomography. The proposed technique modifies a Back-projection (BP) algorithm in reconstructing tomography images. We used 32-ultrasonic ...

    • Quantifying scheme for detection heterogeneous phase in a pipe vessel 

      Mohd Rizal, Manan; Muhammad Naufal, Mansor; Mohd Hafiz Fazalul, Rahiman; Sazali, Yaacob, Prof. Dr.; Ruzairi, Abdul Rahim (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 ...

    • 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 ...

    • Simulation of the two-phase liquid – gas flow through ultrasonic transceivers application in ultrasonic tomography 

      Zulkarnay, Zakaria; Mohd Hafiz, Fazalul Rahiman; Ruzairi, Abdul Rahim (International Frequency Sensor Association (IFSA), 2010-01-29)
      In this paper, ultrasonic transmission mode tomography was used to visualize the two phase liquid/gas flow in a pipe/vessel. The sensing element consists of 8, 16 and 32 units ultrasonic transceivers were used to cover ...

    • 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 ...

    • 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 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 ...