Conference Publications

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https://hdl.handle.net/20.500.14170/1588

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  • Publication
    Performance evaluation of drip irrigation system and water productivity (WP) of Rock Melon grown inside netted rain house shelter
    (IOP Publishing Ltd, 2020)
    Mohd Fauzie Jusoh
    ;
    Nurhayatie Adnan
    ;
    Muhammad Firdaus Abdul Muttalib
    ;
    Ayob Katimon
    The yield of the crops may be subject to the distribution of water directly to the plant root zone using drippers or emitters. To date, there has not been adequate work to evaluate irrigation system performance and water productivity (WP) specifically for rock melon inside a netted rain house shelter in tropical area. Amongst the problem of this system is the non-functional irrigation components after been used for specific of time, thus reducing the irrigation efficiencies and distribution uniformity. This study evaluates irrigation performance of drip irrigation system and estimates WP of rock melon cultivation in the netted rain house shelter. The results indicate that the operating pressure of the drip irrigation system tested varied from 0.8 to 3.0 psi with a discharge rate between 0.14 and 0.25 Lmin-1. Water application uniformity between laterals varied from 66.06 to 89.72%. The WP of rock melon was around 7.93 kg/m3, which is considerably high and in similar range as demonstrated in previous literature. The field evaluation also reveals that the manipulation of valve controller at lateral based on a few selected scenarios did not provide a significant difference in pressure and discharge at the head, middle, and tail section of the drip irrigation system. Such findings would be a very useful information for a precision water management particularly for rock melon cultivation grown under rain house shelter system.
  • Publication
    The development of factory monitoring in high radio frequency interference using Arduino
    (AIP Publishing, 2020)
    Amirul T. A.
    ;
    A. T. Ambak
    ;
    M. G. A. Rahman
    ;
    Amarul Talip
    The objective of this documentation is to detect and monitor the Radio Frequency Interference (RFI) or Electromagnetic Interference (EMI) by using the specific module and system that will fully complied with detailed explanations on engineering aspect regarding the knowledge gained and valuable experiences that I have learned during this proposal period. The mechanism used in this system is the module of Arduino Mega 2560 that act as the main platform for acquiring RFI from the specific sensor and will convey the signal into information that will link to the Programmable Logic Controller (PLC) in the certain way and method of communication through all of the devices. In order to show the supportive toward the Industrial Revolution 4.0 the system is integrated by IOT gateway device that will monitor the data in term of cloud-based using the SIMATIC IOT 2000 as the data storage flatform.
  • Publication
    Development of safety and health culture of construction project through academic institution and industry linkages on TVET platform: a proposed study
    (IOP Publishing Ltd., 2020)
    Nazamuddin Ahmad Razali
    ;
    A.M. Leman
    ;
    K.A. Rahman
    ;
    Norshah Afizi Shuaib
    The increasing trend of occupational accident due to unsafe behavior and unsafe act especially in construction site suggests the need for more effective assessment model or framework towards a more proactive measure. The objective of this study is to development of safety and health culture of construction project through academic institution and industry linkages through Technical and Vocational Education and Training (TVET) platform. The cooperation of employers and employees, together with the government agencies, Academic institution, public –private networking and the Construction Industry Development Board (CIDB) of Malaysia towards excellence safety culture and sustainable development. The review on construction industry and related issues, Institutional perspectives on safety climate, a systems approach to workforce development and Malaysia’s TVET developments is the key element of study and it is combination of several approaches. The framework of the study and flowchart were present to ensure the proposed study is ready to execute.
  • Publication
    Phase formation and microstructure analyses of La0.6Sr0.4CoO3-δ-BaCe0.54Zr0.36Y0.1O2.95composite material prepared by solid state mixing method
    (IOP Publishing, 2020)
    Abdullah Abdul Samat
    ;
    Muhammad Syafiq Amsyar Ahmad Pisor
    ;
    Meor Ahmad Faris Meor Ahmad Tajudin
    ;
    Nafisah Osman
    ;
    Mohd Al-Hafiz Mohd Nawi
    ;
    Murizam Darus
    ;
    Nurul Akidah Baharuddin
    A composite material of La0.6Sr0.4CoO3-δ-BaCe0.54Zr0.36Y0.1O2.95 (LSC-BCZY) was prepared by mixing sol-gel derived LSC and BCZY powders in different weight percentage (wt%) ratio of LSC to BCZY (LSC:BCZY). The prepared composite powders were denoted as S1 (30:70), S2 (50:50) and S3 (70:30). The powders were characterized by an X-ray diffractometer (XRD), a Brunauer-Emmett-Teller (BET) surface area and porosity analyzer and a scanning electron microscope (SEM) equipped with an energy dispersive X-ray (EDX) spectrometer. XRD analysis confirmed that all of the powders were not pure enough due to the presence of impurity phases such as barium carbonate (BaCO3) and strontium carbonate (SrCO3) and unknown phases. S1 powder has the highest amount of impurity phases (81.19 %) and the largest BET surface area (4.82 m2 g−1). All of the powders formed typical clump-like network structure as proven by SEM analysis. EDX analysis revealed that the elemental compositions of La, Sr and Zr were deviated from their nominal mole fractions in all powders due to the Zr-rich clusters formation. The results indicate that the formation of pure and homogenous LSC-BCZY composite powder prepared by solid state mixing method requires further modification and improvement of the preparation method.
  • Publication
    Effects of mixture iochar-fertilizer with and without tableting on the soil chemical characteristics
    (IOP Publishing, 2020)
    Lee Yit Leng
    ;
    Osumanu Haruna Ahmed
    ;
    Samsuri Abdul Wahid
    ;
    Zakry Fitri AB Aziz
    Application of biochar together with fertilizer is a promising strategy to minimize the loss of nutrient through surface runoff and leaching from agricultural field. Biochar has high surface area and can retain nutrients. Despite its advantages, low density of biochar leads to difficult in transporting, handling and mode of application. Our hypothesis is the densification of biochar with fertilizer could reduce transportation and handling costs and minimize loss of nutrient during soil application. Hence, the aim of this study was to determine the effects of mixture biochar-fertilizer with and without tableting on the soil chemical characteristics. There were four fertilization treatments including the control T1 (Soil), T2 (NPK), T3 (Biochar + NPK) and T4 (Biochar tablet embedded with NPK). Mineral clay soils were used and planted with maize. The soil chemical properties were determined for pH, electrical conductivity, total nitrogen, available phosphorus, exchangeable potassium and cation exchange capacity after 53 days planting. The application of biochar tablet embedded fertilizer to soil shows the highest total nitrogen, cation exchange capacity and lower available phosphorus after 53 days planting. The results suggest that the biochar tablet embedded with fertilizer is more efficient to minimize the losses of nutrients in soil.
  • Publication
    A study of new washing process which combines deflection and abrasion action
    (IOP Publishing, 2020)
    Mohd Fidzwan Md Amin Hamzas
    ;
    Shayfull Zamree Abd. Rahim
    ;
    Radhwan Hussin
    ;
    Mohd. Nasir Mat Saad
    ;
    Abdellah el-hadj Abdellah
    This study aimed to determine the optimum washing of laboratory washing model that design to stimulate the active washing process and passive commercial washing machine are compared in order to determine the best washing result. Variables of the study include water speed, washing time and radial nozzle inclination angle. The rotational system of an automatic washing machine has two major technical difficulties. One is the collision of the tub against the frame at the beginning of its early spinning stage. A factor that causes such instability of the rotational object can be attributed to the deflection of the liquid inside the liquid balancer due to the unbalance mass. Proposed a new washing technology and new design of the washing machine can be as a base of its new type. These machines have better outcome data; improve quality of washing process and effective use of washing liquid. New washing machine is simple design, does not have rotary parts at all and uses active process of washing process with squeezing of linens and more productive then known washing machines. Also, this machine can recycle and feed cleaned washing liquid. Additionally, in use of ultrasonic technology of washing process, new machine today will be perfect design.
  • Publication
    Influence of different materials on the mechanical aspects in the design of cyclone gasifier
    (IOP Publishing, 2020)
    Khor Chu Yee
    ;
    Mohd Al-Hafiz Mohd Nawi
    ;
    Muhammad Ikman Ishak
    ;
    Z. X. Wei
    ;
    Mohd Uzair Mohd Rosli
    Cyclone gasifier is used as the energy conversion system for the biomass. The design and material selection for the cyclone gasifier is important, which affect the strength of the gasifier during the operation. This research aims to investigate the effect of the various materials to the mechanical aspects (i.e., stress, strain and displacement) of the cyclone gasifier. The mechanical aspects analysis is carried out by using the finite element (FE) based software. The stress, strain and displacement of the cyclone gasifier’s structure was analyzed for various stainless steel materials (i.e., ferritic (FSS), AISI 316, 1023 CSS, 201 ASS and AISI 4130). The finite element analysis revealed the use of 201 ASS experienced highest stress (221 MPa). Lowest strain and displacement were found on 201 ASS and 1023 CSS, respectively. These research findings are expected to be used as the reference for the engineer in the material selection process for the design and fabrication of cyclone gasifier.
  • Publication
    Experimental and computational evaluations of the mechanical stresses of banana trunk fibre-reinforced epoxy resin composite in coffee table application
    (IOP Publishing, 2020)
    Muhammad Ikman Ishak
    ;
    Mohd Uzair Mohd Rosli
    ;
    Khor Chu Yee
    ;
    C N Ismail
    ;
    Mohd Al-Hafiz Mohd Nawi
    The banana plant including the trunk is normally disposed after it has produced fruits once in its lifetime and becoming unproductive. Herbicide injection and burning using kerosene are the examples of current disposing method. Those methods are unfavourable owing to bad effects to the environment. Therefore, the unproductive banana trunk through its fibre properties, has a high potential to be used as composite in saving the environment. Three tensile test specimens were prepared with two of them have different length of banana fibres – shorter and longer than 0.5 mm, whilst another specimen has no fibres. The elastic modulus, Poisson’s ratio, and vertical load of 2 GPa, 0.3, and 981 N, respectively, were applied towards numerical models. The results exhibited that the composite with short banana fibre length promoted encouraging maximum and break stress values. Besides, the properties of the composite are well appropriate to be applied in furniture making as satisfactory stress value recorded in the computational analysis.
  • Publication
    Preparation and performance test of PEFB reinforced box waste coated superhydrophobic coating for shoe sole application
    (UTHM Publisher, 2020)
    Noraini Marsi
    ;
    Chow Li Kien
    ;
    Juhari A Rani
    ;
    Nor Mazlana Main
    ;
    Mohd Ridzuan Mohd Jamir
    ;
    Muhammad Farid Shaari
    The study presents preparation and performance test of Palm Empty Fruit Bunches (PEFB) reinforced box waste coated superhydrophobic coating for shoe sole application. The main purpose of this analysis is to determine the optimal composition of PEFB reinforced with box waste for use in shoe soles. In this study, the use of PEFB and box waste is to replace the synthetic materials in the application of the shoe sole. Additionally, environmental problems can be reduced by using waste PEFB as a value-added product rather than biomass waste. Sample preparation involved grinding of PEFB fibers and box waste, blending processes of different PEFB percentages at 20%, 40%, 60% and 80% mixed with 50% box waste. Followed by the process of mixing with epoxy and hardener, and finally coated with superhydrophobic coating using a spray gun method. Epoxy resin and hardener are used as binders for the bonding between the PEFB fiber matrix and the box waste to be applied to the shoe sole. The study was carried out in both mechanical and physical studies. The test for tensile strength showed 40% PEFB reinforced with 50% box waste with 181.36N maximum load and 16.70% of strain. The 40% PEFB composition showed the optimum bursting pressure to 13.62kgf and the abrasion resistance had a lower weight loss of 0.28 g. The 80% higher proportion of PEFB indicates a lower density of 1.06g/cm3 and a higher porosity of up to 0.44%. It is also revealed that 40% of box waste provided the best composition for the application of the shoe soles.
  • Publication
    Impact on driver behavior, performance, fatigue, over speed and infrastructure as a factor of road accident: a review
    (IOP Publishing, 2020)
    W Suprihatiningsih
    ;
    A.M Leman
    ;
    D Feriyanto
    ;
    H Pranoto
    ;
    Norshah Afizi Shuaib
    Road safety is become an interesting field to be investigated due to high road accident that still occurred in the world and it increased every year. Second highest accident rate in the world signed by South-east Asia with 20.7 per 100.000 population. That rate include the road accident that occurred in Indonesia. There are several parameters in road accident such as infrastructure, driver behaviour, environment, driver performance, driver fatigue, over speed, vehicle and safety device. Therefore, this study approach a model to interconnect the variables in order to achieve a pattern of road accident factors. This study believe will be improve the awareness of the related agency to increase their responsibility in improving and applying road safety. Moreover, this study output will be comprehensive discuss and critical discussion in terms of road safety plan that may applied in order to reduce the road accident.
      2  18
  • Publication
    Mechanical properties and environmental assessment of recycled carbon fibre reinforced polypropylene and acrylonitrile butadiene styrene products
    ( 2020)
    A N Allawi
    ;
    Norshah Aizat Shuaib
    ;
    N W Y Omar
    ;
    Azwan Iskandar Azmi
    In this study, the main objective is to determine effect of recycled carbon fibre (RCF) on the mechanical properties of thermoplastics composites and associated environmental impacts. Such study is important to improve the strength of the composites as previous studies are limited on RCF composites, particularly in environmental aspects. In the compounding stage, extrusion process was carried out by using two different thermoplastics i.e. polypropylene (PP) and acrylonitrile butadience styrene (ABS) mixing with RCF. Particle size and weight loading of RCF were chosen as parameters to be studied. Bonding strength between the RCF and thermoplastics matrix was investigated through tensile and flexural properties. Lastly, the assessment of the products was carried out to determine the environmental impacts. Generally, the incorporation of RCF into PP and ABS plastic increases the tensile and flexural properties of the samples. It can be seen that the addition of rCF significantly improves tensile modulus and flexural strength up to 10 wt% filler loading. From the environmental impact assessment, the ABS products have greater impact in all categories. The usage of rCF reduce the amount of plastic hence leads to lower environmental impacts. The product has a potential to be used in mechanical demanding application particularly those require high flexural strength and tensile modulus properties.
      22  1
  • Publication
    Effect of plenum chamber design on discharge coefficient in swirling fluidized bed
    (AIP Publishing, 2020)
    Hazizul Hussein
    ;
    Mohd Al-Hafiz Mohd Nawi
    ;
    M. H. M. Hazwan
    ;
    Darius Lee Jian Feng
    ;
    Ku Mohammad Yazid Ku Ibrahim
    ;
    Muhammad Lutfi Abd. Latif
    Using a conventional fluidization systems might tend to use high energy consumption due to the certain parameter design on fluidization. The current study was run to give some overview on the new method which is might useful in fluidization process especially in mineral processing. By designing a combination of cyclone and the inclination angle of annular blade distributor, the gas will cause swirling flow from the cyclone plenum chamber then pass through the distributor gap and certainly achieve suitable performance in term of uniformity fluidization. Numerical simulation such as Computational Fluid Dynamics (CFD) has been widely used to investigate the parameters that influence the system itself. The parameter design of 60 blade distributor with 15° horizontal inclination angle at different depth (0mm, 100mm and 200mm) via several cone height (150mm, 200mm and 250mm) blade distributor to the cyclone plenum chamber has been applied in this current studies. The CFD software is used to compute and obtain the velocity magnitude. The uniformity of velocity distribution are the crucial investigation as this will be used to determine the optimum SFB systems. Effect of 0mm depth blade distributor to the cyclone plenum chamber with 200mm cone height via 60 blade distributors through to 15° of horizontal inclination angle was the most suitable parameter to assist the velocity uniformity.
      29  2
  • Publication
    Basic study converting of sound pressure to electricity with arrangement of sound speaker using thermoacoustic technology
    (IOP Publishing Ltd., 2020)
    Irfan Abd Rahim
    ;
    C M N Faiz
    ;
    M Z M Zarhamdy
    ;
    Norshah Afizi Shuaib
    ;
    A Azlida
    This paper describes the suitability of a loudspeaker to be used as a linear alternator. The present study is intended to clarify experimentally that the ability of loudspeaker to detect a frequency of sound wave by applying the sound into a resonator with the different of length. The result of the experiment will determine the suitable length of resonator that give the best reading. The linear alternator is a linear motor which commonly used as an electrical generator. It is a type of alternating current electrical generator. The function of an alternator is to convert mechanical energy to electrical energy. The linear alternator operate under the principle of electromagnetic induction. Unlike linear alternator, other alternator work in rotary motion while the linear alternator work in linear motion. Electromagnetic induction is a result of an electromotive force across an electrical conductor cause by the dynamic interaction with magnetic field. The data of the experiment was conducted based on the three length of resonator. Based on the experiment, all three resonator give the best reading when the operating frequency of 200 Hz was used. The peak to peak voltage recorded for 100 mm length was 776 mV while the peak to peak voltage recorded for 150 mm length was 824 mV. The last resonator give the reading of 776 mV. For the decibel reading, the 100 mm resonator give the reading of 100.2 dB. The resonator of 150 mm give reading of 98.5 dB and the 200 mm give decibel reading of 99.8 dB. For the experiment with heat engine, the highest peak to peak reading is 40.7 mV and the decibel reading is 110.9 dB.
      1  17
  • Publication
    Thermal decomposition, phase formation and microstructure analysis of surfactant assisted sol-gel derived La₀.₆Sr₀.₄CoO₃-δ material
    (IOP Publishing, 2020)
    Abdullah Abdul Samat
    ;
    Siti Hajar Alias
    ;
    Murizam Darus
    ;
    Mahendra Rao Somalu
    ;
    Nurul Akidah Baharuddin
    ;
    Nafisah Osman
    A single-phase of perovskite-type oxide material can be prepared at a processing temperature relatively lower than 1000 °C through a sol-gel method. However, it is affected by the nature of chemical additives employed during the synthesis process. In the present work, sol-gel derived lanthanum strontium cobaltite, La₀.₆Sr₀.₄CoO₃-δ (LSC64) material is prepared using various non-ionic surfactants namely polyoxyethylene (10) oleyl ether (Brij-97), polyoxyethylene octyl phenyl ether (Triton-X-100) and polyoxyethylene (20) sorbitan monooleate (Tween-80). The prepared powders of the LSC material is subsequently subjected to the thermal decomposition, phase formation and microstructure analysis by a thermal gravimetric analyzer, an X-ray diffractometer and a scanning electron microscope (SEM), respectively. The as-synthesized powders are calcined at different temperatures based on the thermal gravimetric analysis results. X-ray diffractometer results reveal that all of the calcined powders consist of more than 90 % perovskite phase of LSC64 and other secondary phases such as cobalt oxide, lanthanum oxide and strontium carbonate. The Brij-97-based and Tween-80-based calcined powders have morphology of typical clump-like network structure, while the Triton-X-100-based calcined powder has morphology of flake-like network structure.
      18  1
  • Publication
    Perforated plate distributor in fluidization system
    (AIP Publishing, 2020)
    Ku Mohammad Yazid Ku Ibrahim
    ;
    Mohd Al-Hafiz Mohd Nawi
    ;
    M. H. M. Hazwan
    ;
    Nurul Fatin Najihah Abd Samat
    ;
    Hazizul Hussein
    ;
    Muhammad Lutfi Abd. Latif
    The current study on fluidizations system involved with a new design of different slotted inclination angle perforated plates. The new design was to overcome the disadvantage of the conventional of perforated plate which is most of the distributor didn't have an inclination angle. Results from velocities distribution in each perforated plate are extracted. The designs are produces by using Computer-Aided Design (CAD) while studies on characteristics of air flow are be made using computational fluid dynamics (CFD). Each perforated plate design was different in their types of hole (slotted), number of slotted and inclination angle in order to get the best result which respect to the tangential velocity values. The performance of the SFB was assessed in term of velocity distributions values. The higher the tangential velocity, the better the air will be distributed. The most important part to the appropriate design in the plate distributor is slotted inclination angle and the slotted number. The good results in this study were produced by the less number of the slotted on the plate distributor and low slotted inclination angle which is able to produce a high average velocity compared with the less number of slotted.
      1  28
  • Publication
    Efficacy of Arduino based low-cost Resistive Sensor in evaluating Soil Moisture from different Soil types collected in the Kelantan-Terengganu plain of Malaysia
    ( 2020)
    M Jusoh
    ;
    N Zuhariman
    ;
    Muhammad Firdaus Abdul Muttalib
    This paper presents an experimental study on the effectiveness of using Arduino based low-cost resistive sensors to measure soil moisture content from five different soil types. In this experiment, the soil samples were filled in the vases and arranged in a completely randomized design with three replications. The soil samples from the vases were taken for soil moisture evaluation for 28 days. The experiment began with soil samples at fully saturation condition followed by field capacity condition and finished at the dry condition. The sensors used in this study were calibrated with a gravimetric method by using an oven. The results reveal that the Arduino based low-cost resistive sensor is highly capable of measuring suitable soil moisture content of fine sand, loamy soil, and sandy clay loam soil types. However, this type of sensor has poor performance for sandy loam and clay loam soil types due to the high content of organic matter and low bulk density. The performance of this sensor on peat and wetland soil can be further enhanced by using a distinctively developed empirical formula. The system developed in this work allows employing large-scale soil moisture measurement network for irrigation monitoring and controlling in future research due to its low-cost and great simplicity.
      16  1
  • Publication
    Modulus of rupture and surface morphology of the cement composites with the addition of quarry dust
    (IOP Publishing, 2020)
    M Madzura
    ;
    Mazlee Mohd Noor
    Quarry dust is widely used as a substitute material in the cement composites because of its strength, and at the same time the re-use of this by-product waste from the rock mining operations has led to the environmental awareness amongst the researchers all over the world. In this research, an experimental study was undertaken to find out the effect of quarry dust for varying percentage replacement of river sand on modulus of rupture of the cement composites. Besides that, this paper also aims at the relationship of the modulus of rupture and surface morphology of the cement composites. Properties of the cement composites are investigated with partial sand replacement with the addition of quarry dust at 10 wt.%, 12.5 wt.%, 15.0 wt.% and 17.5 wt.%. Cement composites were cured, tested for modulus of rupture and characterized for surface morphology at curing period of 7 and 28 days to obtain the optimal value of quarry dust in the cement composites. The results of this research have indicated that 12.5 wt.% of quarry dust exhibits the optimal value of modulus of rupture and surface morphology in satisfactory condition.
      1  13
  • Publication
    Effect of heat sink design on the thermal characteristic in computational fluid dynamics analysis
    ( 2020)
    Khor Chu Yee
    ;
    Mohd Al-Hafiz Mohd Nawi
    ;
    Muhammad Ikman Ishak
    ;
    Kee Wei Chin
    ;
    Mohd Uzair Mohd Rosli
    ;
    Mohd Riduan Jamalludin
    ;
    Siti Nor Azreen Ahmad Termizi
    The thermal management in the electronic device or system using the heat sink is important to ensure the device or system operating under the allowable temperature. The present study aims to investigate the thermal characteristic (i.e., temperature distribution) of the various heat sink designs via computational fluid dynamics (CFD) analysis. The electronic cooling process of the heat sink is carried out via CFD software. The temperature distribution of the various heat sink designs (i.e., plate fin, circular pin fin and rectangular fin) was analyzed and compared. The CFD analysis revealed the plate fin heat sink has lowest temperature distribution on the fin region. High temperature distribution was observed on the pin fin heat sink. The non-uniform temperature distribution was attributed by the direction of inlet airflow, whereas the low temperature was found in the region that close to the inlet airflow. Thus, the research findings indicated the design of heat sink significantly affects the temperature distribution during the electronic cooling process.
      3  28
  • Publication
    Design of experiment (DOE) analysis in optimizing of annular blade distributor depth in fluidization system
    (AIP Publishing, 2020)
    Hazizul Hussein
    ;
    Mohd Al-Hafiz Mohd Nawi
    ;
    M. H. M. Hazwan
    ;
    Muhammad Lutfi Abd. Latif
    ;
    Ku Mohammad Yazid Ku Ibrahim
    Currently, there are numerous methods that involved in optimization. The aim on their researchers is to determine the appropriate processing parameters setting in the systems and process. Studies on fluidization system by using an optimisation method are very scanty. Apart from quality, the consumption energy in the fluidization systems also plays an important role. Therefore, in this study the researchers have using a Design of Experiment (DOE) method that will discrete possible values based on the data extracted from simulation analyzed. By selecting the range of distributor blade and cyclone area (0mm, 100mm and 200mm) via cone height (150mm, 200mm and 250mm) through 60 number of blades and 15° horizontal inclination angle, design of experiment (DOE) has been constructed by using the Full Factorial Design (FFD) approach. Based on the simulation results, data from mean of tangential velocity and pressure drop has been selected to analyze the performance of plenum chamber design in fluidization process. The results from this analysis has shown a beneficial scientific knowledge and alternative solution to the type of plenum chamber to enhance the uniformity of velocity distribution and discharge coefficient produced using optimisation technique in fluidization system.
      3  18
  • Publication
    Experimental investigation of machining parameter on hole quality in drilling Ti-6Al-4V
    ( 2020)
    R A Rashid
    ;
    Muhamad Nasir Murad
    ;
    Roshaliza Hamidon
    ;
    Shafizan Shariffuddin
    ;
    Ali, Mohamed Ashraf Mahboob
    Titanium alloys (Ti-6Al-4V) are greatly recommended for high performance applications because of their outstanding properties such as low weight, high corrosion resistance and high strength. However, drilling Ti-6Al-4V generates high cutting temperature, especially during high speed drilling (HSD), increased the chemical reactivity of Ti-6Al-4V, thus leading to poor hole quality. High cutting speed increases the temperature during the drilling process, therefore, it is important to consider this factor to achieve better hole quality. This study focuses on the correlation of machining parameter and the quality of the hole produced in terms of hole diameter, roundness and surface roughness. The experiment was conducted using a 6 mm diameter of coated (TiAlN) carbide tool under MQL and MQCL conditions with varying cutting speeds of 65, 75, 85 and 95 m/min and constant 0.02 mm/rev feed rate.
      22  5