Browsing School of Mechatronic Engineering (Articles) by Title

Now showing items 218-237 of 322

    • Objective investigation of vision impairments using single trial pattern reversal visually evoked potentials 

      Vijean, vikneswaran; Hariharan, Muthusamy, Dr.; Sazali, Yaacob, Prof. Dr.; Mohd Nazri, Sulaiman; Abdul Hamid, Adom, Prof. Dr. (Elsevier Ltd., 2013-07)
      Visually evoked potentials (VEPs) originate from the occipital cortex and have long been used as a reliable indicator for vision impairments by ophthalmologists. Any abnormalities in the visual pathways of a person can be ...

    • On stereo processing procedure applied towards blind navigation aid - SVETA 

      Balakrishnan, G.; Sainarayanan, G.; Nagarajan, Ramachandran; Sazali, Yaacob, Prof. Dr. (Institute of Electrical and Electronics Engineering (IEEE), 2005)
      This paper presents a portable traveling support system using stereo image processing for the visually impaired people's navigation. This system named as SVETA consists of a helmet molded with stereo cameras in the front, ...

    • Optical properties of ultraphosphate glasses containing mixed divalent zinc and magnesium ions 

      Khor, Shing Fhan, Dr.; Zainal Abidin, Talib, Prof. Dr.; Mohd Fareq, Abd. Malek, Dr.; Cheng, Ee Meng, Dr. (Elsevier B.V., 2013-01)
      Ternary zinc magnesium ultraphosphate glasses corresponding to (ZnO)x (MgO)30 x (P2O5)70 were prepared by melt quenching technique in the range of 5 6 x 6 20 mol%. The optical absorption spectra of the glasses were ...

    • Optical tomography hardware development for solid gas measurement using mixed projection 

      Siti Zarina, Mohd Muji; Chiew, Loon Goh; Nor Muzakkir, Nor Ayob; Ruzairi, Abdul Rahim, Prof. Dr. ; Mohd Hafiz, Fazalul Rahiman, Dr.; Herlina, Abdul Rahim, Dr.; Muhammad Jaysuman, Pusppanathan; Naizatul Shima, Mohd Fadzil (Elsevier Ltd, 2013-10)
      The ability to implement fan beam projection in parallel view in an optical tomography setup is one of the novelties of this research. This design involves a sensor jig specifically designed for parallel applications that ...

    • 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 using microprocessor and ethernet 

      Ruzairi, Abdul Rahim; Goh, Chiew Loon; Chan, Kok San; Pang, Jon Fea; Leong, Lai Chan; Mohd Hafiz, Fazalul Rahiman (Emerald Group Publishing Limited, 2010-01-01)
      Purpose: Owing to the high cost of data acquisition (DAQ) card in the market, the purpose of this paper is to develop a high speed, low-cost microprocessor and ethernet controller-based DAQ in optical tomography system. ...

    • 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 ...

    • Optical tomography: Image improvement using mixed projection of parallel and fan beam modes 

      Siti Zarina, Mohd Muji; Ruzairi, Abdul Rahim, Prof. Dr.; Mohd Hafiz, Fazalul Rahiman, Dr.; Zarina, Tukiran; Nor Muzakkir, Nor Ayob; Elmy Johana, Mohamad, Dr.; Muhammad Jaysuman, Pusppanathan (Elsevier Ltd, 2013-07)
      Mixed parallel and fan beam projection is a technique used to increase the quality images. This research focuses on enhancing the image quality in optical tomography. Image quality can be defined by measuring the Peak ...

    • 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 ...

    • Optimal coefficient of friction onartificial knee joint contact surfaces 

      Mohd Hafis, Sulaiman; Nur Farahana, Ramli; Mohd Ridzuan, Mohd Jamir; Nur Adlina, Mohd Takhiudin (Trans Tech Publications, 2013)
      Wear generated by the presence of frictiononknee joint contact surfaces can cause debris, which may lead to failure of the artificial knee joint. In this study, the effects of friction coefficients occur on the knee joint ...

    • Optimal selection of long time acoustic features using GA for the assessment of vocal fold disorders 

      Sindhu, Ravindran; Neoh, Siew Chin, Dr.; Muthusamy, Hariharan, Dr. (Trans Tech Publications, 2013)
      In recent times, vocal fold problems have been increasing dramatically due to unhealthy social habits and voice abuse. Non-invasive methods like acoustic analysis of voice signals can be used to investigate such problems. ...

    • Optimising PCM thermal storage systems for maximum energy storage effectiveness 

      Nasrul Amri, Mohd Amin; Belusko, Martin; Bruno, Frank; Liu, Ming (Elsevier Ltd., 2012-09)
      A new performance parameter for PCM thermal storage systems, the energy storage effectiveness, is defined. This parameter can be used to optimise the design of any PCM thermal storage system to maximise the use of the ...

    • Optimization of 67% powder loading co-30cr-6Mo μMIM part by Taguchi method 

      Azizah, Wahi; Norhamidi, Muhamad, Prof. Dr.; Hafizawati, Zakaria (Penerbit UTM Press, 2014)
      This research studies the effect of injection moulding parameters on the density of green body of Cobalt-30Chromium-6Molybdenum (Co-30Cr-6Mo) for powder injection moulding (PIM) feedstock. In this paper 20 micron Co-Cr-Mo ...

    • Optimization of circular side door beam for crashworthiness analysis 

      Raja Sharmi, Raja Husin; Nur Liyana, Tajul Lile; Sazali, Yaacob, Prof. Dr. (Indonesian Society for Knowledge and Human Development (INSIGHT), 2012)
      Structural optimization related to crashworthiness and energy absorption capability is particularly importance to the automotive industry. The optimization involves highly nonlinear computational analysis and design with ...

    • Orientation-based pairwise coarse registration with markerless terrestrial laser scans 

      Siti Nurhashima, Mohd Isa; Shazmin Aniza, Abdul Shukor; I., Maarof; Zainor Ridzuan, Yahya; Norasmadi, Abdul Rahim; Ammar, Zakaria; A. H., Abdullah; R., Wong (Copernicus Publications, 2019)
      In this paper, pairwise coarse registration is presented using real world point cloud data obtained by terrestrial laser scanner and without information on reference marker on the scene. The challenge in the data is because ...

    • Orthogonal least squares method and its application to nonlinear modeling of automotive engine fuelled with palm oil methyl esters 

      Azuwir, Mohd Nor; Mohd Zaki, Ab. Muin, Prof. Dr.; Abdul Hamid, Adom, Prof. Dr. (Praise Worthy Prize S.r.l., 2013)
      In this paper, nonlinear mathematical models for an automotive engine fuelled with palm biodiesel (Palm Oil Methyl Ester) are developed. Assuming a discrete time form for the system model, a polynomial Nonlinear Autoregressive ...

    • Paraffinic mineral oil lubrication for cold forward extrusion: Effect of lubricant quantity and friction 

      Mohd Hafis, Sulaiman; Mohd Ridzuan, Mohd Jamir; Nur Farahana, Ramli; Syahrullail, Samion (Elsevier Ltd., 2013)
      In this paper, Finite Element (FE) and experimental analyses have been developed on the deformation of aluminium billet over a tool. Effect of friction resulted from the use of additive-free ISO460-compliant paraffinic ...