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| Thumbnail | Name | Publication Date | First Public Date
 | Contributors |
| 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 ... | 12/30/2019 | Latiff R. H. A - Author Yusof F. - Author | ||
| Chitosan-bleaching earth clay composite as an efficient adsorbent for carbon dioxide adsorption Process optimization_M. Azharul Islam, Y. L. Tan In this study, chitosan-bleaching earth clay composite (Chi-BE) was prepared in three different ratios (1:0.4,
1:0.6 and 1:0.8) by the alkali gelation method for carbon dioxide (COv adsorption in a fixed-bed adsorption system. Chi-BE (1:0.6) with best adsorption capacity was selected through fractional factorial design and characte... | 12/30/2019 | M. Azharul Islam - Author | ||
| Developments of entropy-consistent residual distribution and finite/Prof. Madya Dr. Farzad Ismai | ||||
| Synergistic response of pogostemon cablin (blanco) benth cell suspension cultures to precursor feeding and elicitation / Dr.Derek Chan Juinn Chieh, Fatin Izzatie Mazlan This research investigates the synergistic effect of precursor feeding and elicitation towards the production of patchouli alcohol (PA) from Pogostemon cab/in callus and cell suspensron cultures rn shake flask systems. Initial study on feeding cis-farnesol as the precursor to activate PA production revelead tho prt sence of 68 mg/ml of PAin the c... | 12/30/2019 | Dr.Derek Chan Juinn Chieh - Author Fatin Izzatie Mazlan - 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 | |
| Allylic and epoxy monomers as reactive plasticizers in polyetherimide /Dr. Arjulizan Rusli Addition of allylic and epoxy monomers as reactive plasticizers in polyetherimide(PEl) was investigated to improve processibility without reduction of thermo-mechanical properties of the PEI. Blends of various concentrations of PEI and monomers with different initiators/curatives were prepared by solvent and melt blending methods. Miscibility study... | 2/26/2020 | 9/20/2010 | Dr. Arjulizan Rusli - Author | |
| Analysis of pedestrian speed flow relationship based on different egress facilities criteria for pedestrian evacuation / Nur Sabahiah Abdul Sukor The increment of the population in Kuala Lumpur had caused the LRT stations become crowded with excessive demand during the peak hours. This also includes the underground LRT stations especially near the KLCC area. Unfortunately, limited study was done regarding the pedestrian and train passengers at underground spaces in Malaysia. Due to th... | 12/30/2019 | 11/12/2013 | Nur Sabahiah Abdul Sukor - 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 | |
| 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 | |
| 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 | |
| Evaluation of rock overstressing in the excavation of pahang-selangor raw water transfer tunnel project/Mohd Ashraf Mohamad Ismail , Romziah Azita, Norzani Mahmood Tunneling under high overburden and high in-situ stress may lead to tunnel instability due to rock overstressing in its surrounding. Overstressing of the hard rock tunnel can cause brittle fractures in the form of rock burst or spalling, which may cause safety hazards, damage of equipment and production disturbances. Therefore, the evaluation of ov... | 3/5/2020 | 10/14/2014 | Mohd Ashraf Mohamad Ismail - Author Romziah Azit - Author Norzani Mahmood - 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 | |
| A study on the effects of three-dimensional crack tip constraint in mixed modes problem numerical and experimental analysis / lr. Dr. Feizal Yusof, Prof. Madya Prof.Choong Kok Keong 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 ... | 1/9/2020 | 4/10/2015 | lr. Dr. Feizal Yusof - Author Prof. Madya Choong Kok Keong - 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 | |
| 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 | |
| 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 | |
| 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 | |
| Asymptotic crack tip fields of surface cracked panels under non-hardening bending loads / Rizman Hariz, Abdul Latiff , 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... | 12/30/2019 | 1/1/2016 | Rizman Hariz - Author Abdul Latiff - Author Feizal Yusof - Author | |
| Effect ofnacl as a space holder in producing open cell A356 aluminium foam by gravity die casting process/ S.F. Aida , M.N. Hijrah, A.H.Amirah, H. Zuhailawati , A.S. Anasyida Gravity die casting is the technique which enables fabrication of open-cell A356 aluminium foam as a suitable absorber material with good quality performance. A356 aluminium alloy was used with varies amount of sodium chloride (NaCI) particles as a space holder to fabricate the aluminium foam using gravity die casting. Microstructural analysis, por... | 3/4/2020 | 1/1/2016 | Dr. Zuhailawati Hussain - Author Anasyida Abu Seman - Author | |
| Fabrication and characterization of hypoeutectic open-cell al-si foams using gravity die casting and squeeze casting /Samsudin Fitri Aida, Mirsad Nur Hijrah, Amirah Ahmad Hamdi, Hussain Zuhailawati, Abu Seman Anasyida 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... | 3/4/2020 | 1/1/2016 | Zuhailawati, Hussain - Author Samsudin Fitri - Author Anasyida Abu Seman - 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 | |
| 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 | |
| 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 | |
| Developments of entropy-stable residual distribution methods for conservation laws 1 scalar problems /Farzad Ismail , Hossain Chizari This paper presents preliminary developments of entropy-stable residual distribution methods for scalar problems. Controlling entropy generation is achieved by formulating a entropy conserved signals distribution coupled with an entropy-stable signals distribution.Numerical results of the entropy-stable residual distribution methods are accurate an... | 2/26/2020 | 11/2/2016 | Farzad Ismail - Author Hossain Chizari - Author | |
| A grid-insensitive lda method on triangular grids solving the system of euler equations/Hossain Chizari, Farzad Ismail The performance of the classic upwind-type residual distribution (RD) methods on skewed triangular grids are rigorously investigated in this paper. Based on an improved signals distribution, an improved second order RD method based on the LDA approach is proposed to faithfully replicate the flow physics on skewed triangular grids. It will be mathem... | 2/26/2020 | 11/17/2016 | Hossain Chizari - Author Farzad Ismail - Author |
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