scholarly journals Development of Guided Inquiry Model Tools Assisted Palm Fiber Composite Media in Sound Wave Material

2021 ◽  
Vol 7 (2) ◽  
pp. 149
Author(s):  
Selviana Haerani ◽  
Aris Doyan ◽  
Muhammad Taufik
2020 ◽  
pp. 161-183
Author(s):  
Ahmed H. Hassanin ◽  
Lobna A. Elseify ◽  
Tamer Hamouda

2014 ◽  
Vol 699 ◽  
pp. 59-63
Author(s):  
Sivakumar Dhar Malingam ◽  
Muhammad Ammar bin Che Mahzan ◽  
Md Radzai bin Said ◽  
Ahmad Rivai ◽  
Mohd Nur Azmi bin Nordin ◽  
...  

Composite materials have steadily gained recognition worldwide for its uses in various sectors such as aerospace, infrastructures and automotive industries. In stamp forming of V-bend die, the most sensitive feature is elastic recovery during unloading called spring-back. This phenomenon will affect bend angle and bend curvature. This research studies the effects of tool radius, feed rate, temperature and weight ratio of fiber to Polypropylene on the spring-back of palm fiber composite. Analyzed results obtained from Design of Experiment (DOE) shows temperature, fiber composition followed by feed rate gives significant effect towards spring-back. The suggested temperature, fiber composition and feed rate to get the smallest spring-back angle in the current study are 150°C, 30wt% and 500mm/min.


2014 ◽  
Vol 699 ◽  
pp. 146-150 ◽  
Author(s):  
Sivakumar Dhar Malingam ◽  
Muhammad Hilmi Ruzaini bin Hashim ◽  
Md Radzai bin Said ◽  
Ahmad Rivai ◽  
Mohd Ahadlin bin Daud ◽  
...  

Concern for the environment, both in terms of limiting the use of finite resources and the need to manage waste disposal, has led to increasing pressure to recycle materials at the end of their useful life. This work describes the effects of reprocessing on the mechanical properties of oil palm fiber reinforced polypropylene composites (PFC). Composites, containing 30wt% fiber with 3wt% Maleate Polypropylene as a coupling agent, were reprocessed up to six times. For this composite, tensile strength (TS) and Young modulus (YM) were found to decrease by 9.6% and 4.7% after being reprocessed for six times. Flexural strength was found to decrease by 23.8% with increased number of reprocessing. The hardness numbers of the composite were found to increase by 7.43% from 72.10 to 77.89 after the sixth reprocessing. In general the degradation on the mechanical properties is considered to be small and PFC has potential to be reprocessed.


2017 ◽  
Author(s):  
Kuncoro Diharjo ◽  
Andy Permana ◽  
Robbi Arsada ◽  
Gundhi Asmoro ◽  
Herru Santosa Budiono ◽  
...  

2017 ◽  
Author(s):  
Kuncoro Diharjo ◽  
Sahid Bayu Setiajit ◽  
Setyo Rojikin ◽  
Hammar Ilham Akbar ◽  
Ilham Taufik Maulana ◽  
...  

2020 ◽  
Vol 8 (6) ◽  
pp. 4248-4252

Studies on the effect of treated sugar palm fiber with alkaline treatment and benzoylation treatment on single fiber tensile strength and interfacial shear strength (IFSS) are shown in this paper. Also shown is the tensile strength of treated sugar palm fiber composite with variable fiber loading (10%, 20% and 30%). For alkaline treatment sodium hydroxide (NaOH) was used, while benzoyl chloride (C7H5ClO) was used in benzoylation treatment. Polymer matrix that was used in the process of making sugar palm fiber composite is epoxy resin with hardener. For the single fiber test and IFSS, the alkaline treatment was carried out using 1% concentration of sodium hydroxide for one hour soaking time while 5ml of benzoyl chloride was used to agitate with sodium hydroxide for benzoylation treatment with variable soaking time (10, 20 and 30 minutes). Treated sugar palm fiber showed higher single fiber strength and IFSS compared to untreated fiber due to the efficiency of both treatments which help rearrangement of fibrils along the tensile force direction. Tensile properties of sugar palm fiber composite show improvement in tensile stress and tensile modulus for treated sugar palm fiber composite while tensile strain show the opposite result. This is because the bonding strength between fiber and matrix increased by removing the outer layer together with impurities from the fiber during chemical treatment. Thus, with this treatment method, sugar palm fiber can be use as reinforcement material for composite and use them for commercial use such as for furniture and component inside vehicle.


2016 ◽  
Vol 23 (5) ◽  
pp. 523-533 ◽  
Author(s):  
Sonia Boukettaya ◽  
Waseem Al Seddique ◽  
Ahmad Alawar ◽  
Hachmi Ben Daly ◽  
Adel Hammami

AbstractNon-isothermal crystallization kinetics of polypropylene/date palm fiber (PP/DPF) composite materials were investigated in this study, using the differential scanning calorimetry (DSC) method. Different fiber contents and cooling rates, varying from 2.5°C/min to 20°C/min, were considered. The obtained results indicated that the initial crystallization temperature increases with the increase of the DPF content. This was attributed to the nucleating ability of these fibers. Several theoretical models were used to predict the non-isothermal crystallization kinetics of the materials considered in this study. Basically, it was shown that both the Avrami analysis, modified by Jeziorny, and the method developed by Mo could adequately describe such kinetics. The activation energies required during the overall crystallization process and at different amounts of the relative degree of crystallinity were also evaluated using the Kissinger method and the isoconversional analysis of calorimetric data, respectively. It was shown that the presence of the DPFs in the PP matrix decreases these energies, confirming their nucleating ability during the non-isothermal crystallization process.


2011 ◽  
Vol 311-313 ◽  
pp. 68-71 ◽  
Author(s):  
Yulfian Aminanda ◽  
Wan Luqwan Hakim Hamid

An experimental campaign on metallic-palm fiber-metallic hybrid subjected to impact loading using spherical projectile has been carried out. High initial energy impact with projectile mass of 24 kg and speed of 1, 3 and 5 mm/s, has been set enabling to determine the energy absorption capability of hybrid composite panel. The influence of stacking sequences metallic-palm-fiber-metallic and metallic-palm fiber-metallic-palm fiber-metallic with different thickness of metallic and palm fiber, to the energy absorption were investigated. The effect of different striker radius; 10, 13 and 20 mm were carried out as well. The mechanism of failure and energy absorbed by the hybrid composite panel and its components; metallic alone and palm fiber alone, were carried out to understand the advantage of having hybrid structure. The optimum configuration of hybrid panel in term of stacking sequence to absorb the energy of impact is proposed. The methodology of this study can be used for designing the armor to absorb the energy of projectile using palm fiber composite panel.


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