Browsing by Type "report"
Now showing 1 - 20 of 1136
Results Per Page
Sort Options
- Publication0.13 𝛍𝒎 cmos class f rf power amplifier for iot application(2019-05-01)Liew, Xin YeInternet of Things (IoT) industry keep growing in recent years. The design of RF power amplifier with high efficiency is thus crucial to reduce power consumption needed for data transmission which is high in capacity and speed. This project is a 0.13 μm CMOS Class-F Radio Frequency (RF) Power Amplifier (PA) which is designed for 2.45 GHz IoT application. The power amplifier design in this project consists of 3 parts including Input Impedance (IIP) match circuit, Class-F harmonics termination circuit and Output Impedance (OIP) match circuit. Smith chart for RF and Cadence software analysis tools are used in this design. For Bluetooth Low Energy (BLE), at least 4 dBm of output power is needed for signal transmission in BLE standard. In terms of performance, this PA design has power gain of 5.79 dB and output power of 5.79 dBm at operating frequency 2.45 GHz for the maximum Power Added Efficiency (PAE) of 31.62% with Output Third Order Intercept Point (OIP3) of 8 dBm. The maximum Output Third Order Intercept Point (OIP3) for this design is 15.7 dBm. At output power of 4 dBm (BLE standard), the PA’s power gain is 7.34 dB with PAE of 30% and OIP3 of 13 dBm. At the operating frequency of 2.45 GHz, the PA exhibits stability k-factor, 𝐾𝑓 value of more than 1 and thus the PA is unconditionally stable. Besides, the PA shows S-parameters performance of -19.25 dB for 𝑆11 and -13.97 dB for 𝑆22. These performances of PA are achieved at power supply of 1.2 V.
- Publication10-bit digital-to-analog converter (dac) using partial binary tree network (pbtn) dynamic element matching (dem) approach(2019-06-01)Tan, Zi JunDigital-to-Analog converters (DAC) are an important element in many digital systems which demands high-performance data conversions. Due to factors like shrinking supply voltage and budget constraint, DAC highly relied on matched components to perform data conversion. However, matched components are nearly impossible to fabricate, because mismatch errors always occurred between designed and actual component value. One of the techniques to overcome the effect of mismatched components error is to use Dynamic Element Matching (DEM) method. This method randomizes the digital input codes before entering DAC block, making the time of each component position nearly equal. The drawback of this design is, it would suffer from excessive hardware complexity and causes glitches at the output signal. In this research, the DEM algorithm used is known as Partial Binary Tree Network (PBTN) algorithm. PBTN reduce the complexity of the circuit and produce an output signal with fewer glitches. In this research, the ideal Operational amplifier (Op-Amp) used to magnify the output current is replaced with an Op-Amp built by transistors. This thesis reports the simulation of 10-bit 1-MSB PBTN DAC using a non-ideal operational amplifier with DNL of -0.182979 LSB, INL of -0.959287 LSB and power consumption of 1.108 mW.
- Publication180° hybrid coupler implemented with 2x2 butler matrix(2019-06-01)Halmy, Nor Amylia MohdHybrid coupler is a four-port device where a directional coupler is designed to split power equally between two ports. Hybrid coupler can be used to decouple and increase the isolation between antenna ports. In this project, it is focus on how to design 180° Hybrid Coupler implemented with 2x2 Butler Matrix by using CST. The concept of transforming branch-line hybrid coupler into coupled-resonator network is presented in this project. The proposed of hybrid coupler with additional method with 2x2 Butler Matrix is to improve the isolation, size reduction, better terms of low production cost and good return loss. This project is focused on how to reduce the size of hybrid coupler so that it will obtain good S-Parameters. This design is fabricated using RO 4003C printed circuit board with dieletric constant, 𝜀(, 3.55 mm, thickness of substrate, H, 0.81 mm and thickness of copper, t, 0.035 mm. The design need to be operated at 2.4GHz. From the simulation and measured results, the 180° Hybrid Coupler implemented with 2x2 Butler Matrix nearly met the entire requirement needed such as return loss which is less than - 10 dB, isolation loss is nearly less than -5 dB. However, the isolation between ports is in the range frequency of 2.39 GHz to 2.54 GHz. It is still acceptable because the performance is not affected.
- Publication20 kwe biomass downdraft gasifier system(2005-03-01)Ishak, Mohd AsrulA small scale downdraft gasifier that has producing 20kW biomass generator had been set to provide electrical power for the rural areas have been developed. The downdraft gasifier is erected in the laboratory at the School of Mechanical Engineering, Universiti Sains Malaysia (USM). In this research, gasification system in used is gasifier in lower flow with a wood as a biomass sources. Many modification were made during installation and this experimented to make it suit with surrounding condition and to improve the performance of the system. Experiments have been performed of gasification of furniture wood as raw material. The system performance of the gasifier had been determined by finding the efficiency of the system, moisture content and diesel displacement. The system of the downdraft gasifier also involved the development of power absorbing system using 24 kW electrical loading as heating element has been successfully done. The overall efficiency of the system at full speed is 3.64% to 15.75% and minimum speed is 4.16% to 21.5% depending on the electrical load used to absorb the power from the generator. Air flow rate of the producer gas also increase with the speed of generator. The moisture content of the wet wood is quite small but still in the range.
- Publication2–18ghz radar pencari arah(2006-11-01)Hussin, Mohd RidhuanThis report presents the design of radar direction finder which will be use to detect the receiving signal in the frequency range of 2GHz to 18GHz. This range of frequency is commonly use by the military for their operations. This system is design with the combination of several parts such as receiver antenna, low noise amplifier circuit, mixer down converter circuit, varactor tuned oscillator circuit, band pass filter circuit, RF to DC voltage converter circuit, amplifier circuit, analog to digital converter (ADC) circuit, digital to analog converter (DAC) circuit and finally the 8051 microcontroller trainer board. In this system, the receiver antenna that will be use is from the antipodal vivaldi antenna type. Its need exactly eight identical antenna to make this direction finder system to works well. Each design and simulation done in this project is using the software called HPADS. The control and process unit for this system is done by the 8051 microcontroller.
- Publication3d deformable circuit board for soft robotics(2021-07-01)Leong, Jun XianNowadays, the electronic components in the intelligent devices are getting more compact, making the device to be tiny but with many functions. However, there are still many electronic components which are rigid and cannot be deformable. In recent years, many researches have been done to develop a deformable or stretchable printed circuit board (SPCB). However, most of the SPCB exist as a single layer board. Besides, there is no conventional control circuit board that are suitable for soft robotics application. Thus, a 3D deformable control circuit board was proposed and built based on the schematic design of Arduino Uno board. In this project, an Arduino Uno R3 board was selected and transformed into a soft deformable circuit board. The electronic components on Arduino Uno board were desoldered and removed. Then, the schematic design of the Arduino Uno board was modified to reduce the complexity of the control circuit. The circuit layout of the board was designed based on the concept of kirigami structure. The circuit was printed onto the flexible printed circuit board (FPCB) and divided into many islands. These FPCB islands were arranged in kirigami structure and connected by meander-shaped metal tracks. Next, the whole circuit were encapsulated by silicone rubber. After the fabrication was done, mechanical tests for deformable board were carried out to test its stretchability and its robustness. The elongation limit of fabricated 3D deformable control circuit board was 35.90%, whereas the maximum twisted angle on deformable board was 95°. The compression force that can be withstood by the deformable board was 10.05N. The performance of deformable board was also compared with a rigid Arduino Uno board, and the results showed that the deformable board has higher stretchability and deformability than a rigid Arduino Uno board. Therefore, a 3D deformable control circuit board which was compatible for soft robotics applications was successfully fabricated. The comparison between deformable board and rigid board had also proven that deformable board was unique and more suitable to be used in soft robotics application. Besides, the strength and weakness of deformable board was listed and discussed. Suggestions were also given to improve the performance of 3D deformable circuit board in the future.
- Publication3d facial verification using stereo vision(2010-04-01)Tai, Shu WornFace recognition has been a focus in research for the last couple of decades because of its wide potential applications and its importance to meet the security needs of today’s world. This project proposes a face recognition system that uses passive stereo vision to capture three-dimensional (3D) facial information and 3D matching using a simple Sum of Squared Difference (SSD) algorithm. So far, the reported 3D face recognition techniques assume the use of active 3D measurement for 3D facial capture. However, active methods employ structured illumination (structure projection, phase shift, gray-code demodulation, etc.) or laser scanning, which is not desirable in many human recognition applications. An advantage of passive method is that it costs lower than active method. This system uses a stereo camera to locate, track, and recognize a person’s face. This algorithm improves state-of-the-art monocular 2D object recognition techniques by additionally considering the facial 3D surface, which is relatively stable under different lighting conditions. First, faces are detected and their surfaces are reconstructed from the stereo images. Afterwards, a 3D face is composed by joining 2D image data and appropriate depth data. The 3D face is then decomposed into its principal components. The principal components are used to recognize a 3D face by comparing characteristics of the current face to those of known individuals in a database. The result is an efficient and accurate face recognition algorithm.
- Publication3d networked virtual representation(2009-04-01)Tan, Hong PingThree dimensional (3D) virtualization has been a popular method to observe and present data and simulation results. Although many robotic applications have applied 3D virtualization technology for simulation, there is not much applications which incorporate 3D technology into computer networking to develop a networked virtual environment (net-VE) with teleoperation ability. This project aimed to realise such system, where multiple users able to control and view the virtual mobile robots, in addition, able to teleoperate a real mobile robot through the virtual environment. This project presented the system, 3DVR©, which has all the features of a net-VE system with teleoperation function. 3DVR© is being developed using Python scripting language, and Panda3D® engine for 3D virtualization. The implementation of 3DVR© shows 3D virtualization of 3D models and environment in a graphical user interface (GUI) with functions in aiding the users to view and navigate around the virtual environment. There are four operation modes in 3DVR©; which are local virtual robot simulation, local real robot teleoperation, mobile robot teleoperation through local area network (LAN), and mobile robot teleoperation through internet. The four operation modes are successfully demonstrated with virtual mobile robot models and the results obtained are promising.
- Publication3D printer system design and development(2019-06-01)Fan, Jian RongThe advent of 3D printing has revolutionized the traditional subtractive manufacturing and being recognized as additive manufacturing where materials are added, joined or fused together successively layer by layer. However, due to open loop condition in 3D printer motion system, this may lead to layer shifting problem and result in failures and wastage of plastic. Therefore, this project aims to design a closed loop system in the stepper motion to rectify the layer shifting problem during printing. Therefore, a 3D printer is constructed with the help of Solidworks to design an innovative foldable mechanism to the printer structure as well as the installation of AVAGO incremental optical linear encoder on the XY gantry. The detection of input step and direction signal from firmware is conducted with the help of Arduino libraries, same goes to the detection of distance from linear encoder. A motor controller is designed using Arduino UNO as the control unit to receive the input signal from 3D printer firmware and generate output to the A4988 stepper motor driver to run the motor, where the response is monitored by linear encoder as the feedback for the closed loop system using bilinear transformation in order to interface with the Arduino microcontroller. The prototype of portable 3D printer is assembled and has proved to be working for its folding mechanism. The phase lead controller is being analyzed for its performance in terms of feedback of linear encoder, stability of the system, and accuracy of the controller. The linear encoder shows a dropping accuracy for longer distance in open loop system. This is due to its lower resolution compared to microstepping stepper motor. In terms of stability, a gain of K=0.25 is applied to the phase lead controller to obtain a stable response without oscillation. High accuracy is obtained for the phase lead controller and is maintained at average of 96.26% for X axis and 97.23% for Y axis. The print head is deliberately perturbed by an external force during the printing task to evaluate the designed controller performance in disturbance rejection. The system manages to rectify the error and shift back to the required position, showing the success of closed loop system in stepper motion to recover from layer shifting problem. All the objectives have been achieved.
- Publication3d robotic vision(2020-07-01)Silvarajoo, KamalappriyaOne of the most important part in our human body is our eyes. Our vision are key player in our body because of the hand – eye coordination. Hand eye coordination is the coordinated control of eye movement with hand movement and the processing of visual input to guide locate, identify and grasping an object with the use of proprioception of the hands to guide the eyes. In industrial world, identification of a subject is high priority since the position and orientation of a subject is highly recommended. The use of the vision system is to compute the locus and the orientation of a subject.2D robotic vision system was created to capture an image of a subject and 2D vision system are using two dimensional map (X, Y) of reflected intensity. The vision system are develop to 3D which is more convenient and advanced to compute the position and orientation of a subject. This project is designed to control the robotic arm via automated visual feedback accurately. In this project, the derivation of the transfer function which maps the camera and robotic coordination system in 3D. Results that obtain through this experimental, the real world ground image will be created. Day by day new innovation are making our life less complex. This 3D vision system could be one of the next technologies with betterment that bring the future nearer.
- PublicationA literature study of sabah sarawak peninsular Malaysia(2008-08-01)Loh, Swee AunNowadays, High voltage direct current (HVDC) is used to transmit large amounts of power over long distances or for interconnections between asynchronous grids and underwater or submarine transmission. It has become an integral part of the delivery of electricity in many countries throughout the world. This is because there are a number of advantages over AC transmission system in certain cases. The objectives of this literature survey are to study the application of HVDC and the reasons of using HVDC in transmission system. Some basic theories related to HVDC are also examined and analyzed in this survey. A case study on the Sabah/Sarawak-Peninsular Malaysia interconnection HVDC transmission system is discussed. This case study on the project is chosen because this transmission system will be the longest transmission system on the world and will benefit to Malaysia. This transmission system will launch in Malaysia soon. The analysis and discussion on the case study are done based on the theories studied.
- PublicationA benchmark low voltage of microgrid network(2010-04-01)Zulkifli, Nurul AsiahA study about microgrid network has been conducted to explore new and environmental friendly renewable energy. A few relevant papers concerning the microgrid network as higher energy efficiency and by facilitating the integration of renewable sources that is potential in the future market have been collected and studied. New renewable and efficient energy resources offers an alternative solution which integrating a network that is microgrid network. Microgrid can be connected to the main power network or be operated autonomously, similar to power systems of physical islands. Microgrid network is usually connected to an electrical distribution network in an autonomous way and employs various distributed generation technologies such as micro-turbines, fuel-cell, photovoltaic arrays, wind turbines and others system together with energy storage devices such as battery, condenser and flywheel. In addition, the benchmark low voltage provides the guidelines in the design of low voltage microgrid network. Moreover, standardizing case study grids to provide benchmark networks suitable for microgrid design would further enhances their merit and utility. Microgrid may potentially offer various advantages to end-customers, utilities and society, such as; improved energy efficiency, minimized overall energy consumption, improved services quality and reliability and also cost efficiency electricity infrastructure replacement.
- PublicationA comparative study of different collectors in the flotation of rare earth mineral(2022-08-17)Muhamad Azman, Nadiah AdlinApplication of rare earth elements (REE) in various filed had caused the demand for REE-bearing minerals (REM) to spike in these recent years. Xenotime (YPO4), a source of yttrium (Y) is often sought for its high-temperature superconductors properties and also as an additive in alloys. Froth flotation as a fundamental method for processing complex minerals is commonly applied in the beneficiation of rare-earth-bearing minerals. This research program was designed to compare the effectiveness between two different collectors (octano-hydroxamic acid and sodium oleate) and its concentration on xenotime flotability. The froth flotation study is carried out using bench flotation equipment with the condition of pH 7 and at room temperature. Samples were also characterized using Particle Size Analysis (PSA), X-ray Diffraction (XRD), X-ray Fluorescence (XRF) and Scanning Electron Microscopy (SEM). In the absence of depressant, octano-hydroxamic acid shows better selectivity in the flotation of xenotime than sodium oleate. On the other hand, sodium oleate produces better grade of xenotime with the presence of depressant. Increases in concentration will improve xenotime grade but at higher concentration it can be detrimental. Optimum concentration for xenotime flotation was found at 0.001M. Overall, the addition of sodium silicate as depressant can significantly increase xenotime grade and successfully depress silica and alumina. However, it shows no depressing power on hematite. The knowledge gained from this work will be beneficial in selecting appropriate collectors for xenotime recovery in the industry.
- PublicationA comparative study on the effect of chemical additives on clinker grinding(2022-08-01)Md Zan, Siti RohaidahThe aim of the present research work is to improve the clinker performance by using a laboratory-scale ball mill to generate a high-quality mineral binder in terms of particle size, particle shape, and crystallization of particle. The experiment has been carried out in dry conditions, with around 1 kg of cement clinker sample measured using a measuring cylinder was ground with 20 kg of the steel ball. Characterization was done to the feed samples by X-Ray Fluorescence (XRF), X-Ray Diffraction (XRD) and Scanning Electron Microscope (SEM). The grinding process were run without and with the addition of Triethanolamine (TEA) and two industrial grinding additives, MA. G. A/C379 and MA. G. A/C188 were employed in this experiment with dosages 0.05, 0.25, 0.50 and 1.00 wt.%. It was found that the addition of grinding aids with varied amounts of grinding aids has no significant influence on generating fine size cement powder, according to the graph of particle size distribution. Furthermore, the particles formed are elongated, cubic, angular, rhombus, flaky, and irregular grains shape and it has been demonstrated that there is no significant difference because the grain shape achieved before and after grinding is nearly identical. The particle crystallinity of the ground product is also not noticeably changed. To summarise, it was found that the optimum grinding additives that can be used are MA. G. A/C379and MA. G. A/C188.
- PublicationA comparison between levenberg-marquardt (lm) intelligent system and bayesian regularization (br) intelligent system for flow regime classification(2006-05-01)Sa'ad, Mohamad IqbalThe purpose of this project is to study the performance, leaning time and, output of Levenberg-Marquardt (LM) intelligent system and Bayesian Regularization (BR) intelligent system through a classification problem. These studies will help in choosing the right training algorithm for classification problem involved. These intelligent systems have to classify flow regimes in a closed line with the data are provided by Electrical Capacitance Tomography (ECT). ECT measured the different capacitance value of fluid and produced the data for the classification problem. Multilayed Perceptron (MLP), a type of artificial neural network (ANN) which is widely used in a classification problem is developed using MATLAB 7®. The comparison made showed that LM learning algortihm is a faster training algorithm compared to BR training algorithm meanwhile BR learning algorithm capable of building a superior intelligent system in term of the overall system performance.
- PublicationA computational fluid dynamics (cfd) macro modeling and simulation of single chamber solid oxide fuel cell (sc-sofc)(2008-04-01)Koay, Hai SiuSingle Chamber Solid Oxide Fuel Cell (SC- SOFC) has been gaining popularity lately due to its simplified structure, absence of gas seal and reduced cell manufacturing cost. It has also been shown to produce higher power density ~700 mW/em' and makes it useful in many applications. The characteristic and performance of a SC- SOFC system has been greatly dependant on the gas flow condition inside the gas channel, the chemical reaction inside the porous electrode and the heat generation and transfer inside the gas channel. In this research, three submodels of SC- SOFC operating inside a gas channel were simulated and analyzed using FLUENT. Gas Flow and Porous Media Transport/ Reaction submodels were simulated at a minimum and maximum SC- SOFC temperature setting to analyze the effect of different operating temperature on the characteristic of the models. The Heat Generation and Transfer submodel were analyzed considering the effect of simulation with radiation and without radiation. The advantages of using CFD to simulate the various models are SOFC design model can be further improved before the actual prototype is made and tested, costs incurred by CFD are much lower if compared to conventional experimental procedures and the time needed to bring a design to market is very much reduced. Simulation and analysis of this research were compared to literatures available to obtain validated experimental efforts to verify the simulation results.
- PublicationA computational fluid dynamics (cfd) macro moeling and simulation of single chamber solid oxide fuel cell (sc-sofc)(2008-04-01)Koay, Hai SiuSingle Chamber Solid Oxide Fuel Cell (SC- SOFC) has been gaining popularity lately due to its simplified structure, absence of gas seal and reduced cell manufacturing cost. It has also been shown to produce higher power density ~700 mW/cm* and makes it useful in many applications. The characteristic and performance of a SC- SOFC system has been greatly dependant on the gas flow condition inside the gas channel, the chemical reaction inside the porous electrode and the heat generation and transfer inside the gas channel. In this research, three submodels of SC- SOFC operating inside a gas channel were simulated and analyzed using FLUENT. Gas Flow and Porous Media Transport/ Reaction submodels were simulated at a minimum and maximum SC- SOFC temperature setting to analyze the effect of different operating temperature on the characteristic of the models. The Heat Generation and Transfer submodel were analyzed considering the effect of simulation with radiation and without radiation. The advantages of using CFD to simulate the various models are SOFC design model can be further improved before the actual prototype is made and tested, costs incurred by CFD are much lower if compared to conventional experimental procedures and the time needed to bring a design to market is very much reduced. Simulation and analysis of this research were compared to literatures available to obtain validated experimental efforts to verify the simulation.
- PublicationA computational study about the effect of surface shape on strength & stiffness of tensioned fabric structures under wind loading(2006-06-01)Kuan, Hui MyenThis thesis is carried out to investigate the effect of surface shape on strength (in terms of maximum stress) and stiffness (in terms of surface displacement) of tensioned fabric structures under wind loading. In this paper, anticlastic forms like saddle, cone and membrane dome of tensioned fabric structures were analyzed. Finite element software – ADINA is used to create the models of tensioned fabric structure. It is followed by analyzing step by using a stress analysis computer program to investigate the form as well as the effect of wind loading for each model with different pre-stress level conditions under the same wind loading condition. From the study, the location of maximum stress and displacement of different shape is recognized in order to check the efficiency of different shapes in resisting wind loading. The graph of maximum tension/pre-tension versus sag/span is used to show the relationship between structure strength and effect of wind loading. While the graph for percentage of maximum displacement versus pre-tension is used to show the relation between the shape and the stiffness of the structure. This study has covered rectangular saddle surface, square saddle surface and conical surface for both strength and stiffness of the surface shape mentioned above. It has been found that the square saddle surface exhibits the best result to resist wind loading. This conclusion is based on the lowest ratio for maximum tension/pre-tension and sag/span as well as the lowest percentage for displacement result exhibited in the result for square saddle surface. The outcome of the study will provide technical guidance on efficiency of different shapes of tensioned fabric structures in resisting wind loading.
- PublicationA Computational Study On Structural Behaviour Of Surfaces With Curved Fold Lines(2021-08-01)Khor, Yong YeeSurface with curved creases derived from origami can be advantageous in roof structures which can improve strength while preserving the aesthetic values. However, there is still a great deal of ambiguity and insufficient research on the potential use of curved fold lines. This study targets to formulate a systematic computational method for the generation of surface with curved creases with different factors governing the surface configuration. This study also aims to investigate the effects of pattern of curved crease folds, thickness of surface and the change of the rise-span ratio on structural behaviour of surface with curved crease in terms of load-carrying capacity and stiffness. Several criteria had been established for the selection of origami with curved creases based on the extensive collection by the previous researcher. The outcome shows three origami models have potential application in roofing systems, namely Non-inflated Degree-4 Vertices, Four Circular Mountain Ridge Curves and Four Elliptical Mountain Ridge Curves. Image Capturing Method (ICM) is adopted to develop the outlines of the origami models and the elevation profiles from the raster 3-D paper forms. Surface formation is then proceeded before the finite element analysis. These origami models are then scaled with 100 and assigned with additional analytical properties to evaluate the structural performance. Finite element analysis under self-weight condition only is carried out corresponding to the adjustments, i.e., elevation profiles of curved fold lines, overall risespan ratio and surface thickness. The best-performing model in terms of better stress distribution and lower displacement with the consideration of self-weight is then selected. The results obtained from the variation of elevation profiles of curved fold lines show that all models under the category of Model 01 (Non-inflated Degree-4 Vertices) and Model 02 (Four Circular Mountain Ridge Curves) failed to meet the tensile stress limit. Comparing these two types of models, Model 01 shows relatively higher stress and displacement. In contrast, only the models under category of Model 03 satisfy the stress limit. This is mainly due to the geometry patterns of the origami models which lead to different stress distributions over the surfaces. For the rest of the modifications, the FE results show that all models under the category Model 03 are still within the allowable stress and deflection limits with slight variation. Therefore, the presence of curved fold lines and the greater overall effective depth of the structure help to enhance the performance in load-carrying capacity.
- PublicationA correlation between impact strength index, slake durability index and uniaxial compressive strength of granite rocks at natm-4, Langat, Selangor(2012-06-01)Md Noh, Nor Arina SaadiahIn this study, the correlations of the three parameters of rocks were studied in relation to the construction of the Inter – State Raw Water Transfer (ISRWT) Project. Inter – State Raw Water Transfer (ISRWT) Project is designed to assist and convey raw water from the Semantan River through a transfer tunnel to the Selangor / Kuala Lumpur region for domestic and industrial uses to mitigate future water shortages since the water resources available within the Selangor / Kuala Lumpur. The study area was at NATM-4 Langat area. In order to study the mechanical properties of the granitic rocks and correlation between impact strength index, slake durability index and uniaxial compressive strength, rock samples were collected from 16 tunnel distances to conduct three tests which are impact strength test, slake durability test and uniaxial compressive strength test. During analysis, there are factors have been considered to the strength of rocks but the most consideration was on the weathering state. From the results obtained, the slightly weathered rocks resulted in high strength meanwhile the highly weathered rocks show significantly low strength when it subjected to high impact loading, slake durability and uniaxial compressive force. In the experimental studies, it is also noticed that the correlation between these three tests are directly proportional. The impact strength index, slake durability index and uniaxial compressive strength are directly proportional to each other. So, as a recommendation, to study the strength or rocks, the physical testing also required because it is closely related to the mechanical properties of the rocks.