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| Thumbnail | Name | Publication Date
 | First Public Date | Contributors |
| Asymptotic crack tip fields of surface cracked panels under non-hardening bending loads / Rizman Hariz Abdul Latiff and Feizal Yusof In this paper, the investigation of in-plane constraint loss in a semi-elliptical surface cracked panei(SCP)
specimen based on a detailed non-hardening finite element analysis with aspect ratios ale ofO.S and relative depths aft of 0.33 and 0.5 under bending loads. The asymptotic stress field solutions were compared to the fully constrained Prandt... | 12/21/2020 | 1/1/2017 | Rizman Hariz Abdul Latiff - Author Feizal Yusof - Author | |
| Analysis of pedestrian walking characteristics at vertical facilities in underground train station /Nur Sabahiah Abdul Sukor Kuala Lumpur is the national capital of Malaysia as well as the center of attraction for people looking for jobs. Thus, in the future people will tend to use public transport including the Light Rail Transit (LRT) more often than driving their vehicle. This is especially so due to critical traffic congestion on the road especially durin... | 12/21/2020 | 1/1/2017 | Nur Sabahiah Abdul Sukor - Author | |
| An improved method to model semi-elliptical surface cracks using element mismatch in abaqus / R. H. A. Latiff , F. Yusof The purpose of this paper is to propose and investigate the feasibility of using multiple element types in a single model, termed element mismatch, for a three-dimensional semi-elliptical crack problem. The purpose behind the exploration of this method is to ease the meshing process in complex models. Multiple semi-elliptical surface ... | 12/21/2020 | 1/1/2016 | Latiff R. H. A. - Author Yusof F. - Author | |
| A study on the effects of three-dimensionalcrack tip constraint in mixed modes problem Numerical and Experimental analysis / lr. Dr. Feizal Bin Yusof, Prof. Madya Choong Failure of engineering structures usually manifest from cracks preceded by local plastic deformation. The characterization of three-dimensional crack tip plastic deformation hence is important to assessment of susceptibility of cracks in structures. Three-dimensional elastic plastic techniques are available but application to complex problem are ... | 12/21/2020 | 5/10/2015 | lr. Dr. Feizal Yusof, - Author Associate Prof.Choong Kok Keong - Author | |
| The study of direct thermal-to-electricity conversion using thermionic heat cell device_Assoc. Prof. Dr. Abdus Samad Mahmud, Assoc. Prof. Dr. Jamaluddin Abdullah, _M4_2015_NI Thermionic energy conversion (TEC) is the direct conversion of heat into electricity by the mechanism of thermionic emission, the spontaneous ejection of hot electrons from a surface in vacuum environment. There are two major obstacles for achieving highly efficient TECs; the strict need for low emitter and collector work functions, and the mutual ... | 12/18/2020 | 2/11/2015 | Assoc. Prof. Dr. Abdus Samad Mahmud - Author Assoc. Prof. Dr. Jamaluddin Abdullah - Author | |
| Novel piezoelectric material characterization with hysteresis, creep, vibration and saturation non-linearity effects/Dr. Ahmad Zhafran Ahmad Mazlan, Prof. Dr Zaidi Mohd Ripin This research aims to investigate the presence of four non-linear characteristics (i.e., hysteresis, saturation, creep and vibration) when a piezoelectric patch material is acted as actuator for the AVC of a beam. The parameters such as frequencies and voltages are taken into account for the piezoelectric patch material characterization and the vib... | 12/18/2020 | 1/1/2017 | Dr. Ahmad Zhafran Ahmad Mazlan - Author Prof. Dr Zaidi Mohd Ripin Mohd Ripin - Author | |
| Pt-based catalytic microcombustor for micropower generation/Muhamad Nazri Murat Muhamad Azman Miskam, Mohd Azmier Ahmad, Zainal Alimuddin Zainal Alauddin, Mohammad Zulfikar Ishak This paper presents the fabrication and characterization of platinum-based catalytic microcombustor. The platinum catalyst was deposited onto type-304 stainless steel using the wet impregnation method. The stainless steel undergoes controlled conversion coating treatment in sulfuric acid solution to increase the porosity... | 12/10/2020 | 9/9/2014 | Muhamad Nazri Murat - Author Muhamad Azman Miskam - Author Mohd Azmier Ahmad - Author Zainal Alimuddin Zainal Alauddin - Author Mohammad Zulfikar Ishak - Author | |
| Characterization of wet impregnation method for catalytic microcombustor by using platinum/Muhamad Nazri Murat, Muhamad Azman Miskam, Mohd Azmier Ahmad, Zainal Alimuddin Zainal Alauddin, Mohammad Zulfikar Ishak The wet impregnation method for catalytic microcombustor was characterized by using platinum as a catalyst. The main purpose of this stud y i s to increase the surface porosity of the catalyst support. A high surface porosity indicates that a high amount of catalyst was deposited within the surface areas. The per... | 12/9/2020 | 1/1/2014 | Muhamad Nazri Murat - Author Muhamad Azman Miskam - Author Mohd Azmier Ahmad - Author Zainal Alimuddin Zainal Alauddin - Author Mohammad Zulfikar Ishak - Author | |
| Analysis on the influence of environmental, physical, and socioeconomic (epse) spatial variables as applied in spatial decision model for landfill site selection/Pm Dr. Mohd Sanusi S. Ahamad, Pm Dr. Mohd Suffian Yusoff New Landfills must comply with the requirements of governmental regulations that put emphasis on minimising the environmental, physical and socio-economic (EPSE) impacts. This research has primarily identified and characterise local spatial EPSE variables for locational suitability decision model for MSW landfill siting problem commonly encountered... | 12/9/2020 | 12/12/2013 | Pm Dr. Mohd Sanusi S. Ahamad - Author Pm Dr. Mohd Suffian Yusoff - Author | |
| Understanding of photo-degradafion mechanism in nr latex with the incorporation of surface modified bi-metal oxide/Assoc.Prof. Dr Nadras Othman The aim of this work is to prepare I-NR using a photodegradation method, hence to characterize its physical and chemical properties. In this study, UV light was used to degrade NR in latex state. Reaction parameters such as UV radiation, temperature, hydrogen peroxide, reaction time, DRC and stabilizers showed synergistic effect and influenced the ... | 9/24/2020 | 7/30/2019 | Assoc.Prof. Dr Nadras Othman - Author | |
| The study of direct thermal-to-electricity conversion using thermionic heat cell device/ Assoc Prof. Dr. Khairudin Mohamed Thermionic energy conversion (TEC) is the direct conversion of heat into electricity by the mechanism of thermionic emission, the spontaneous ejection of hot electrons from a surface in vacuum environment. There are two major obstacles for achieving highly efficient TECs; the strict need for low emitter and collector work functions, and the mutual ... | 9/24/2020 | 11/1/2015 | Assoc Prof. Dr. Khairudin Mohamed - Author | |
| Novel piezoelectric material characterization with hysteresis, creep, vibration and saturation non-linearity effects /Dr. Ahmad Zhafran Ahmad Mazlan This research aims to investigate the presence of four non-linear characteristics (i.e., hysteresis, saturation, creep and vibration) when a piezoelectric patch material is acted as actuator for the AVC of a beam. The parameters such as frequencies and voltages are taken into account for the piezoelectric patch material characterization and the vib... | 9/23/2020 | 8/15/2019 | Dr. Ahmad Zhafran Ahmad Mazlan - Author | |
| Time-dependency behavior of steel fiber reinforced shotcrete lining under rock overstressing using shotcrete model / Heyam Shaalan A numerical analysis is implemented to estimate the time-dependent behavior of the steel fiber reinforced shotcrete lining (SFRS) using the constitutive model of shotcrete. Based on the concept of elasto—plastic strain hardening/softening plasticity, a new model of shotcrete is formulated, in which the time dependent strength, stiffness, creep and ... | 3/9/2020 | 1/1/2016 | Heyam Shaalan - Author | |
| Solid state lighting driver ic modeling using behavioral simulation technique/A. Marzuki, S. R. Abdul Aziz, Tun Zainal Ami Zulkifli Solid state lighting (SSL) technology has a potential to provide artificial lighting more efficiently, low cost and longlasting alternatives to conventional incandescent and fluorescent lighting sources. As the LED technology evolves, the applications involving LEDs are innumerable and its varieties impose a clear demand on design of controllable S... | 3/9/2020 | 1/1/2018 | Marzuki A. - Author Abdul Aziz S. R - Author Tun Zainal Ami Zulkifli - Author | |
| Rock overstressing in deep tunnel excavation of pahang-selangor/Romziah Azit, Mohd Ashraf Mohamad lsmail, Sharifah Farah Fariza Syed Zainal Tunneling under high overburden and in-situ stress may cause tunnel instability because of rock overstressing. Evaluating overstressing in deep hard rocks is crucial to minimize excavation risks. The excavation of the Pahang-Selangor Raw Water Transfer Tunnel is evaluated in this study. A potential overstressing problem is expected at a tunnel dept... | 3/9/2020 | 6/9/2009 | Romziah Azit - Author Mohd Ashraf Mohamad lsmail - Author Sharifah Farah Fariza Syed Zainal - Author | |
| Numerical analysis of TBM tunnel lining behavior using shotcrete constitutive model /Prof Madya Dr. Mohd Ashraf Mohd Ismail Shotcrete is a ftlndamental support element for tunnels and underground constructions. Shortly after application, shotcrete linings undergo a high load while the ordinary concrete is not fully hardened yet. Therefore, the time-dependent behaviour of the shotcrete material must consider. Traditional approaches assume a linear elastic behaviour using... | 3/9/2020 | 5/5/2018 | Prof Madya Dr. Mohd Ashraf Mohd Ismail - Author | |
| Modeling stress-induced failure for deep tunnel excavation of pahang-selangor raw water transfer project / Romziah Azita, Mohd Ashraf Mohamad Ismail The stress-induced failure, such as spalling and rock burst are considered as engineering disasters in deep underground excavations in hard rock. A practical predictive technique or a model to evaluate these stress-induced failures and a spalling strength is a concern in the design of support systems and excavations in underground tunnels. In the p... | 3/9/2020 | 10/18/2016 | Romziah Azit - Author Mohd Ashraf Mohamad Ismail - Author | |
| Investigation of improvement on the sensitivity of low noise low power cmos optical crop sensor/Arjuna Marzuki, Mohd Tafir Mustaffa, Norlaili Mohd. Noh and Basir Saibon Plant phenotyping studies represent a challenge in agriculture application. The studies normally employ CMOS optical and image sensor. One of the most difficult challenges in designing the CMOS sensor is the need to achieve good sensitivity while achieving low noise and low power simultaneously for the sensor. At low power, the CMOS amplifier in th... | 3/9/2020 | 8/31/2018 | Arjuna Marzuki - Author Mohd Tafir Mustaffa - Author Norlaili Mohd Noh - Author Basir Saibon - Author | |
| Finite Element Analysis of Tunnelling Induced Deformation Towards/Mohd Ashraf Mohammad Ismail, Lim Siao Phin, Tay Wui Wenn The demand of surface area increases rapidly in the urban areas due to the increase in populations. This leads to the shortage of surface area for development in the future. Underground development is one of the solutions to solve the problems, such as the tunnel constructed underground, to provide new spaces for the development without claiming va... | 3/9/2020 | 10/23/2015 | Mohd Ashraf Mohammad Ismail - Author Lim Siao Phin - Author Tay Wui Wenn - Author | |
| Environmental monitoring and controlling system for mushroom farm with online interface /Arjuna Marzuki, Soh Yan Ying Agriculture sensors play an important role in modern agriculture. The use of sensors in various agriculture sectors minimizes the environmental impact on crops, helps in increasing yield and saving cost of operation. Among all agriculture industries in Malaysia, the mushroom industry is a comparatively new and small. As most of the mushroom farms i... | 3/9/2020 | 1/1/2018 | Arjuna Marzuki - Author Soh Yan Ying - Author | |
| Application of shotcrete constitutive model to the time dependent behavior of tbm tunnel lining/Heyam H. Shaalan, Mohd Ashraf Mohamad Ismail, Romziah Azit Shotcrete is ordinary concrete applied to the surface under high pressure. It demonstrates a highly time-dependent behaviour after few hours of application. Traditional approaches assume a simple linear elastic behaviour using a hypothetical young modulus to investigate the time-dependency and creep effects. In this paper, a new constitutive model ... | 3/9/2020 | 1/1/2018 | Heyam H. Shaalan - Author Mohd Ashraf Mohamad Ismail - Author Romziah Azit - Author | |
| The effect of space holder content and sintering temperature of magnesium foam on microstructural and properties prepared by sintering dissolution process (sdp) using carbamide space holder/S.F. Aida , H. Zuhailawati , A.S. Anasyida Magnesium foam has gained a significant interest in structural application due to low density and greater strength than aluminium foam. In this study, magnesium foam was produced by sintering dissolution process (SDP) using spherical carbamide as the space holder. Magnesium foam was prepared using SDP at sintering temperatures (600 'C, 630 0 C, 650... | 3/5/2020 | 1/1/2017 | Aida S.F. - Author Zuhailawati H. - Author Anasyida A.S. - Author | |
| The effect of space holder content and decomposition methods in fabrication of aluminum foams by powder metallurgy method using carbamide space holder/A. H. Amirah, M. S. Nurulakmal, And A. S. Anasyida The effect of space holder amount and decomposition methods on the morphology, density and porosity and compressive properties of aluminum foams were investigated. Aluminum foam was fabricated by powder metallurgy method using spherical carbamide as space holder using three different decomposition method of carbamide includes; dissolution process, ... | 3/5/2020 | 1/1/2016 | Amirah A. H. - Author Nurulakmal M. S. - Author Anasyida A. S. - Author | |
| Semisolid nucleation mechanism of open cell foam aluminium/Dr. Anasyida Abu Seman @ Hj Ahmad, Dr. Nurulakmal Mohd Sharif , Prof. Ir. Dr. Zuhailawati Hussain Gravity die casting and squeeze casting are the techniques used for the fabrication of hypoeutectic open-cell Al-Si foams which are characterized and studied for their energy absorbing quality in compression tests. The effect of different amounts of sodium chloride (NaCl) (up to 56 vol.%) as a space holder in the casting of aluminum foam on the mor... | 3/5/2020 | 12/11/2018 | Dr. Anasyida Abu Seman @ Hj Ahmad - Author Dr. Nurulakmal Mohd Sharif - Author Prof. Ir. Dr. Zuhailawati Hussain - Author | |
| Evaluation of tunnel seismic prediction (tsp) result using the japanese highway rock mass classification system for pahang-selangor raw water transfer tunnel_W. C. Von , M. A. M. Ismail The knowing of geological profile ahead of tunnel face is significant to minimize the risk in tunnel excavation work and cost control in preventative measure. Due to mountainous area, site investigation with vertical boring is not recommended to obtain the geological profile for Pahang-Selangor Raw Water Transfer project. Hence, tunnel seismic pred... | 3/5/2020 | 1/1/2017 | Von, W. C. - Author smail, M. A. M. - Author |
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