One Floor Portal Frame Model
1. INTRODUCTION
Conventional sound absorption materials used for building acoustic such as glass fiber and foam glass are known to be harmful to both the environment and human. In a comparison done between different sound insulation panel materials including synthetic and natural materials, the data suggests that the fabrication and production of synthetic materials have a positive global warming potential by contributing more carbon dioxide to the atmosphere when compared with natural materials. Besides, the mineral-made synthetic fibers contain a certain amount of toxic and can be a threat to human health if it is inhaled, and if contacted, may lead to skin irritation [1]. Natural fibers, which do not contribute too much on the environmental issue and contain very low toxicity are hence an alternative in sound absorption material. Vegetable fiber panels are found to have compatible and higher performance in indoor noise control comparing with conventional material [2]. Good acoustic performance has been discovered on sugarcane wasted fibers [3] where the absorption coefficient is found to have an average of 0.65 at 1.2 to 4.5 kHz. Whereas the acoustic performance of paddy waste fibers [4] had been studied and the average value of absorption coefficient is found to have reached 0.8 above 2.5 kHz. This paper presents the preliminary studies on the acoustic performance of Kenaf fiber. Kenaf is a hibiscus plant that is related to cotton, okra and hollyhocks, scientifically known as Hibiscus cannabinus, it is a member of Malvaceae family [5]. Kenaf is usually used as building materials, organic absorbents, and paper products [6]. Traditionally it is used in ornamentals, food, medicine, musical instruments and superstitious rites. 2. METHODOLOGY 2.1 Preparation of Material Kenaf fiber sheet in a form of chopped strand mat with thickness of 5 mm is being cut into a disc shape with diameter of 33 mm in order to fit onto the removable cap of the impedance tube. Several disc- shaped kenaf fiber were layered to vary the thickness of the sample as shown in Figure 1. Figure 1 Raw kenaf fiber left and layers of kenaf fiber forming a sample with thickness of 10 mm right.2.2 Experimental set up
The impedance tube method was used for the measurement of sound absorption coefficient. Figure 2 shows the experimental set up of the measurement. The data acquisition system used was the RT Pro Photon+v6.34 analyzer. White noise was the sound source fed by the loudspeaker to the interior of the tube, whereas the sample to be tested was placed in the removable cap at the other end of the impedance tube. The cap can be adjusted to form an air gap behind the sample. The two microphones used were G.R.A.S ½ inch prepolarized Computer Signal Analyzer Microphones Loudspeaker Amplifier Removable Cap Sample inside Figure 2 Diagram of absorption coefficient measurement setup.Parts
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» INTRODUCTION Proceeding Of Mechanical Engineering Research Day 2015 (MERD’15).
» METHODOLOGY Proceeding Of Mechanical Engineering Research Day 2015 (MERD’15).
» EXPECTED RESULTS AND DISCUSSION
» CONCLUSIONS Proceeding Of Mechanical Engineering Research Day 2015 (MERD’15).
» ACKNOWLEDGMENT Proceeding Of Mechanical Engineering Research Day 2015 (MERD’15).
» REFERENCES [1] P. K. Panda, “Review: environmental friendly
» RESULTS AND DISCUSSION Proceeding Of Mechanical Engineering Research Day 2015 (MERD’15).
» CONCLUSIONS The effects of pineapple leaf fiber loading on the
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» REFERENCES [1] J.P. Dhal, and S.C. Mishra, “Processing and
» SUMMARY Proceeding Of Mechanical Engineering Research Day 2015 (MERD’15).
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» REFERENCES [1] S. Choi. and J.A. Eastman, “Enhancing Thermal
» Scanning Electron Microscopy SEM
» Fourier Transform Infrared FTIR
» Thermal Conductivity Testing METHODOLOGY
» REFERENCES [1] Weitz, D. A., Huang, J. S., Lin, M. Y., and Sung,
» Stability Test METHODOLOGY 1 Preparation of Nanofluids
» Thermal Properties Test METHODOLOGY 1 Preparation of Nanofluids
» Heat Transfer Performance Test
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» Selection and Development of Mathematical Model
» RESULTS AND DISCUSSION 1 Main and Interaction Effects
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» METHODOLOGY RESULT AND DISCUSSION
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» MATERIALS AND NUMERICAL ANALYSIS
» RESULTS AND DISCUSSION SUMMARY
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» RESULTS AND DISCUSSION The results were divided into 3 sections:
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» SUMMARY The information of biomimetic design features was
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» BACKGROUND Chia et al.[4] showed analysing some cases of the
» METHODOLOGY In this work, the building is divided into many
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» Effect of Load and Temperature to Coefficient of Friction
» m REFERENCES [1] K. Mabuchi, K. Tanaka, D. Uchijima, and R.
» Oxidation Test METHODOLOGY 1 Material
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» BACKGROUND Proceeding Of Mechanical Engineering Research Day 2015 (MERD’15).
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» Material Removal Rate RESULTS AND DISCUSSION
» Wear Rate Tool wear ratio can be calculated using the
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» INTRODUCTION Many studies related to the electro-hydraulic servo
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» Stationary Mould Design STATIONARY MOVEABLE MOULD DESIGN
» Moveable Mould Design STATIONARY MOVEABLE MOULD DESIGN
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» Process Flow METHODOLOGY 1 Design
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» Material Preparation and Experimental Setup
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» One Floor Portal Frame Model
» REFERENCES [1] P. Fiala, G. Degrande, and F. Augusztinovicz,
» Experimental set up METHODOLOGY 1 Preparation of Material
» Validation of Results RESULTS AND DISCUSSION
» Mobility of Plates with All Edges Having Same Boundary Conditions
» Mobility of Plates with Identical Opposite Edges
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» INTRODUCTION METHODOLOGY Proceeding Of Mechanical Engineering Research Day 2015 (MERD’15).
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» Input Power in Infinite Beam Structure
» Averaging Over Frequency Bands
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» REFERENCES [1] Pure Technologies, Case Study: City of Calgary -
» REFERENCES [1] H. Kavi, A.K Toksoy, M. Guden, “Predicting
» Temperature Profile RESULTS AND DISCUSSION 1 Visual Observation
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» Comparison Commercial and Experimental
» Experimental Setup Figure 1 illustrates the setup of the experiment for
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» Pedal Sensor through Variable Resistor
» Relay Triggered Circuit HARDWARE DESIGN METHODOLOGY
» MOSFET Drive Circuit Power MOSFET IRL2703 is a fast switching speed
» Power Efficiency and Dissipated Energy Calculation
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» Experimental Set-Up METHODOLOGY 1 Device Configuration
» RESULTS AND DISCUSSION From the Figure 1, Figure 2, Figure 3, all graphs
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» Powder-Pack Boronizing Procedure The boronizing treatments will be carried out in a
» Hardness values The initial hardness values for boronized and
» Kinetics of Atoms at Surface Using Arrhenius Equation
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» Machining Condition METHODOLOGY 1 Workpiece
» Effect of Feed Rate and Cutting Speed on Surface Roughness
» Optimum parameter for surface roughness
» ACKNOWLEDMENT Thanks to Universiti Teknikal Malaysia Melaka
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» Color histogram BACKGROUND 1 Body discomfort
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» METHODOLOGY The stages in this research are as follows:
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