scholarly journals PENGARUH PENAMBAHAN LIMBAH PLASTIK BEKAS TERHADAP KARAKTERISTIK KEKUATAN TARIK DAN KEKUATAN BENDING MATERIAL POLIMER KOMERSIL

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
S. Sujita ◽  
S. Gunawan Hadi
Keyword(s):  
Tensile Strength ◽  
Epoxy Resin ◽  
Tensile Testing ◽  
Bending Strength ◽  
Polyester Resin ◽  
Volume Fraction ◽  
Bending Test ◽  
Composite Powders ◽  
A Value ◽  
Plastic Powder

Polyester, epoxy and polyurethane composites are widely used for the matrix. The use of composite materials in the manufacturing industry as well as many studies of composites by utilizing plastic powder and the lack of studies directly comparing the tensile strength and bending properties of composite plastic powder to the treatment of the same fiber. The purpose of this study was to determine the tensile and bending strength of the composite material of polyester, epoxy, and polyurethane with reinforcing plastic powder by varying the volume fraction. In this study, the material used is plastic powder, with a size of 8 mm and the preparation of chopped random fibers, with a fiber volume fraction (0% / 100%, 5% / 95%, 10% / 90%, 20% / 80%, 30 % / 70%, 40% / 60, 50% / 50%, 60% / 40%, and 70% / 30%), using polyester resin, epoxy, and polyurethane as matriknya. Comparison of epoxy resin and polyurethane that is one to one, while for polyester using the catalyst of 2%. Tensile testing with ASTM D 3039, and bending test were conducted with ASTM D 790. The results of tensile testing tensile strength values obtained by variation of the highest volume fraction of 0% is owned by a composite plastic powder with 100% polyester resin with a value of 35.22 MPa, followed by a variation of the volume fraction of the composite with 0% plastic powder with 100% epoxy resin with the strength values pull of 6.40 MPa. While bending test results obtained the highest bending strength values held by the variation of volume fraction of the composite 0% plastic powder with 100% polyester resin with a value of 66.985 MPa, then successively followed by the composite with the highest volume fraction variation possessed by 30% of composite powders plastic with 70% epoxy resin with a value of 42.078 MPa bending strength, for a volume fraction of 50% variation of plastic powder with 50% polyurethane resin to obtain the highest value of bending strength of 6.963 MPa.

scholarly journals Biokomposit Limbah Plastik Polypropylene Berpenguat Serat Lidah Mertua: Proses Ekstraksi dan Kekuatan Mekanis

Jurnal METTEK ◽  
2019 ◽  
Vol 5 (2) ◽  
pp. 128
Author(s):  
I Putu Lokantara ◽  
Ngakan Putu Gede Suardana
Keyword(s):  
Tensile Strength ◽  
Tensile Testing ◽  
Bending Strength ◽  
Volume Fraction ◽  
Bending Test ◽  
Test Results ◽  
Hot Press ◽  
Soaking Time ◽  
Recycled Polypropylene ◽  
The Matrix

Tujuan dari penelitian ini adalah untuk menentukan kekuatan tarik dan kekuatan bending biokomposit limbah plastik polypropylene berpenguat serat lidah mertua. Lidah mertua yang digunakan adalah lidah mertua yang pinggirannya daunnya kuning dengan usia yang seragam. Daun lidah mertua direndam dengan metode water retting selama 7 hari dan proses ekstraksi serat dilakukan secara manual. Polypropylene daur ulang yang digunakan berasal dari limbah plastik minuman gelas. Perlakuan kimia serat lidah mertua dengan konsentrasi 5% NaOH dan waktu perendaman 2 jam. Komposit dicetak dengan menggunakan press panas dengan suhu 200oC dan waktu penahanan 2 jam. Komposit dilakukan pengujian tarik dengan menggunakan ASTM D-570 dan uji bending dengan ASTM 790-03. Hasil uji tarik menunjukkan bahwa kekuatan tarik tertinggi pada fraksi volume 35% sebesar 71,606 MPa. Kekuatan tarik meningkat sebesar 28,9% dari fraksi volume 25% ke fraksi volume 35%.  Hasil uji bending menunjukkan bahwa kekuatan bending tertinggi pada fraksi volume 35% sebesar 74,55 MPa. Kekuatan bending meningkat sebesar 22,9% dari fraksi volume 25% ke fraksi volume 35%. Dengan pengamatan foto mikro SEM, ikatan adhesi antara serat dan matrik terjadi dengan baik pada fraksi volume 35%.      The purpose of this study was to determine the tensile strength and bending strength of lidah mertua fiber reinforced polypropylene. Lidah mertua is used whose leaf margins are yellow with a uniform age. Lidah mertua leaves were soaked by water retting method for 7 days. Fiber is extracted manually by hand. Recycled polypropylene used comes from glass beverage plastic waste. The chemical treatment of lidah mertua fibers 5% NaOH and a soaking time of 2 hours. Composites are molded using a hot press with a temperature of 200oC and a holding time of 2 hours. Composite tensile testing was carried out using ASTM D-570 and bending test with ASTM 790-03. Tensile test results showed that the highest tensile strength at 35% volume fraction was 71,606 MPa. Tensile strength increased by 28.9% from 25% volume fraction to 35% volume fraction. Bending test results showed that the highest bending strength at 35% volume fraction was 74.55 MPa. The bending strength increased by 22.9% from the 25% volume fraction to the 35% volume fraction. By observing SEM micro photographs, the bond between the fiber and the matrix occurs well at 35% volume fraction

scholarly journals SIFAT MATERIAL POLYESTER HYBRID COMPOSITE - BATANG BEMBAN (Donax Canniformis)

2017 ◽  
Vol 2 (2) ◽  
pp. 97-104 ◽  
Author(s):  
Akhmad Syarief ◽  
Akhmad Yafie
Keyword(s):  
Tensile Strength ◽  
Energy Absorption ◽  
Hybrid Composite ◽  
Bending Strength ◽  
Volume Fraction ◽  
Chemical Properties ◽  
Bending Test ◽  
Stem Bending ◽  
New Type ◽  
And Chemical Properties

Bemban (Donax Canniformis) is a plant similar to rattan, the stem produces fiber woven material. This plant has other names bamban, bumban, bomban, and so forth. Composites are a new type of material combined with two or more ingredients and have different properties with each other both physical properties and chemical properties. From the research of this hybrid composite stem rod, it is known in the specimens of impact test of volume fraction 60% bemban (Energy Absorption 21,11 J and Impact Price 0,0332 J / mm²) has the most optimum ductility than volume fraction 40% Energy Absorption 20.62 J and Impact Price 0.0324 J / mm²) and 50% bemban bemban (Energy Absorption 20,96 J and Impact Price 0.0330 J / mm²). In bending test specimens, the volume fraction of 60% bemban stem (Bending Strength 0.45 MPa) has the most optimum ductility properties compared to the volume fraction of 40% bemban rod (Bending Strength 0.63 MPa) and 50% bemban (Bending Strength 0.72 MPa). In tensile specimens fraction volume of 60% bemban rod (Tensile Strength 0.00449 MPa) has the most optimum ductility properties compared to volume fraction of 40% bemban rod (Tensile Strength 0.00224 MPa) and 50% bemban rod (Pull Strength 0.00284 MPa).

scholarly journals KARAKTERISTIK SIFAT MEKANIK KOMPOSIT SERAT BAMBU RESIN POLYESTER TAK JENUH DENGAN FILLER PARTIKEL SEKAM

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Agus Budiman ◽  
Sugiman Sugiman
Keyword(s):  
Tensile Strength ◽  
Rice Husk ◽  
Bending Strength ◽  
Volume Fraction ◽  
Unsaturated Polyester ◽  
Bamboo Fiber ◽  
Bending Test ◽  
Bending Modulus ◽  
Bamboo Fibers ◽  
The Impact

This paper presents the effect of volume fraction of rice husks on the mechanical properties of bamboo fiber/unsaturated polyester composites. The composite specimens were made from bamboo fiber with fixed volume fraction of 40% and rice husk particle as filler with volume fractions varied 0%, 10%, 20% and 30%. Matrix used was unsaturated polyester resin. Bamboo fibers and rice husk were surface treated using alkali solution 4% (by weight) for 2 hours. The manufacturing process of composite was using hand layup method. The specimens were tested in tension, bending and in impact loading. The results show that the addition of rice husk particles up to volume fraction of 20% does not result in a decrease of tensile strength, but after a volume fraction of 20%, the tensile strength tends to decrease. In bending test, the rice husk volume fraction up to 20% increase the bending strength, but after that then it tends to decrease. However the bending modulus seems unaffected by the volume fraction of rice husk. Similar to the bending modulus, the impact strength is not significantly affected by the volume fraction of rice husk.

scholarly journals Studi Pengaruh Komposisi Pengisi Serat Alam Kayu Galam (Melalueca Leucadendra) Bentuk Serutan pada Sifat Mekanik dan Mikrostruktur Komposit Poliester Sebagai Material Untuk Aplikasi Bilah Kincir Angin

2019 ◽  
Vol 19 (1) ◽  
pp. 9-14
Author(s):  
Andromeda Dwi Laksono ◽  
Ika Ismail ◽  
Cahyaningtyas Ratna Ningrum
Keyword(s):  
Tensile Strength ◽  
Bending Strength ◽  
Natural Fiber ◽  
Volume Fraction ◽  
Wood Fiber ◽  
Fiber Composites ◽  
Impact Testing ◽  
Bending Test ◽  
Natural Fiber Composites ◽  
Melaleuca Leucadendra

[ID] Sebagai alternatif sumber energi konvensional, energi angin merupakan salah satu energi alternatif yang banyak dikembangkan. Pemanfaatan energi ini tidak lepas dari alat pengonversinya, kincir angin. Salah satu komponen kincir angin yang cukup penting adalah bilah. Bilah sering mengalami masalah berupa pengikisan pada bagian permukaannya akibat benturan dengan oleh partikel yang terbawa oleh angin yang dapat mengakibatkan fungsi bilah tidak optimal. Sehingga, dibutuhkan material pengganti yang lebih kuat tetapi ringan, yakni komposit. Komposit yang digunakan adalah komposit serat alam (serat Melaleuca leucadendra-poliester). Dalam penelitian ini akan dianalisa pengaruh fraksi volume serat berbentuk serutan terhadap kekuatan tarik, kelenturan dan ketangguhan. Pembuatan komposit serat alam Kayu Galam (Melaleuca leucadendra)-poliester dengan cara mencampurkan resin, katalis dan serat Kayu Galam yang berbentuk serutan kemudian dicetak didalam cetakan yang telah dilapisi alumunium foil. Sampel kemudian dilakukan pengujian kekuatan tarik dengan standar ASTM D 638, pengujian tekuk dengan standar ASTM D 790 serta pengujian impak dengan standar ASTM D 6110. Metode yang digunakan dalam pembuatan adalah metode hand lay-up. Hasil dari penelitian ini adalah nilai optimum yang dicapai yaitu 70% serat pada semua uji mekanik. Didapatkan nilai kekuatan tarik berada sebesar 13,07 MPa, kekuatan tekuk optimum 36,8 MPa dan nilai optimum dari kekuatan impak sebesar 590,39 MPa. [EN] As an alternative to conventional energy sources, wind energy is one of the many alternative energies that have been developed. The utilization of this energy is inseparable from its conversion tool, windmills. One component of the windmill that is quite important is the blade. Blades often experience problems in the form of erosion on the surface due to collisions by particles carried by the wind which can cause the blade function to be not optimal. So, it takes a replacement material that is stronger but lighter, namely composite. The composites used were natural fiber composites (Melaleuca leucadendra-polyester fibers). In this study, the effect of the volume fraction of fiber in the form of shavings on tensile strength, flexibility, and toughness will be investigated. The making of natural fiber composites of Galam Wood (Melaleuca leucadendra) -polyester by mixing resin, catalyst, and Galam Wood fiber in the form of shavings is then printed in a mold that has been coated with aluminum foil. Samples were then tested for tensile strength with ASTM D 638 standard, bending test with ASTM D 790 standard and impact testing under ASTM D 6110 standard. The method used in manufacturing was the hand lay-up method. The result of this study is the optimum value achieved is 70% fiber in all mechanical tests. Obtained tensile strength values of 13.07 MPa, the optimum bending strength of 36.8 MPa and the optimum value of impact strength of 590.39 MPa.  

scholarly journals ANALISIS SIFAT KEKUATAN TARIK DAN KEKUATAN BENDING KOMPOSIT HIBRYD SERAT LIDAH MERTUA DAN KARUNG GONI DENGAN FILLER ABU SEKAM PADI 5% BERMATRIK EPOXY

2013 ◽  
Vol 3 (1) ◽  
Author(s):  
Jauhari Muslim ◽  
Nasmi Herlina Sari ◽  
Emmy Dyah Sulistyowati
Keyword(s):  
Tensile Strength ◽  
Tensile Test ◽  
Rice Husk ◽  
Manufacturing Industry ◽  
Bending Strength ◽  
Rice Husk Ash ◽  
Volume Fraction ◽  
Hybrid Composites ◽  
Bending Test ◽  
Fiber Volume

Abstract The use of composite materials is growing at over the development of manufacturing industry. Composites sansevieria and hibiscus canabinus with the addition of rice husk ash filler. The purpose of this study was to analyze the tensile strength and bending strength of hybrid composites sansevieria and hybiscus canabinus with rice husk ash filler epoxy bermatrik with random fiber direction.Variation of fiber volume fraction sansevieria and hybicus canabinus is 0%:35%,10%:25%, 15%:10%, 20%:15%, 25%:10%, 35%:0%. Method for making composite specimens in the form of hand lay up with a fiber length of 2cm. Testing was done by bending test following the ASTM standard D790 tensile test and ASTM D3039 standards.The results showed that the composites with rice husk ash fillers higher bending strength and the strength of its appeal compared to the composite without using rice husk ash fillers, where the highest bending strength on volume fraction 0%/35% as big as 32,00 MPa (using filler), and kekutan lowest bending the volume fraction 0%/35% as big as 21, 69 Mpa (without filler). While the tensile test has the highest power in the volume fraction 15%/20% as big as 8,24 MPa (using filler), and the lowest tensile strength on volume fraction 0%/35%  as big as 3,43 MPa (without filler).

scholarly journals Experimental Investigation on the Influence of Fiber Path Curvature on the Mechanical Properties of Composites

Materials ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2602
Author(s):  
Huaqiao Wang ◽  
Jihong Chen ◽  
Zhichao Fan ◽  
Jun Xiao ◽  
Xianfeng Wang
Keyword(s):  
Tensile Strength ◽  
Path Planning ◽  
Composite Laminates ◽  
Bending Strength ◽  
High Strength ◽  
Bending Test ◽  
Fiber Placement ◽  
Automated Fiber Placement ◽  
Fiber Path ◽  
Path Curvature

Automated fiber placement (AFP) has been widely used as an advanced manufacturing technology for large and complex composite parts and the trajectory planning of the laying path is the primary task of AFP technology. Proposed in this paper is an experimental study on the effect of several different path planning placements on the mechanical behavior of laminated materials. The prepreg selected for the experiment was high-strength toughened epoxy resin T300 carbon fiber prepreg UH3033-150. The composite laminates with variable angles were prepared by an eight-tow seven-axis linkage laying machine. After the curing process, the composite laminates were conducted by tensile and bending test separately. The test results show that there exists an optimal planning path among these for which the tensile strength of the laminated specimens decreases slightly by only 3.889%, while the bending strength increases greatly by 16.68%. It can be found that for the specific planning path placement, the bending strength of the composite laminates is significantly improved regardless of the little difference in tensile strength, which shows the importance of path planning and this may be used as a guideline for future AFP process.

scholarly journals Effect of Gamma Radiation on the Mechanical Properties of Natural Fabric Reinforced Polyester Composites

2019 ◽  
Vol 27 (4(136)) ◽  
pp. 88-93
Author(s):  
K.Z.M. Abdul Motaleb ◽  
Md Shariful Islam ◽  
Rimvydas Milašius
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Impact Strength ◽  
Gamma Radiation ◽  
Bending Strength ◽  
Polyester Resin ◽  
Radiation Doses ◽  
Elongation At Break ◽  
Bending Modulus ◽  
Polyester Composites

Two types of composites:(1) pineapple fabric reinforced polyester resin (Pineapple/PR) and (2) jute fabric reinforced polyester resin (Jute/PR) were prepared and the mechanical properties investigated for various gamma radiation doses ranging from 100-500 krad. Properties like tensile strength, Young’s modulus, elongation-at-break, bending strength, bending modulus and impact strength were increased significantly by 19%, 32%, 45%, 32%, 47% and 20%, respectively, at a dose of 300 krad for Pineapple/PR, and by 47%, 49%, 42%, 45%, 52% and 65%, respectively, at a dose of 200 krad for the Jute/PR composite in comparison to the non-irradiated composite. Gamma radiation improved the mechanical properties, but overdoses of radiation even caused a reduction in them.

Mechanical and Interfacial Characterization of Jute Fabrics Reinforced Unsaturated Polyester Resin Composites

2019 ◽  
Vol 25 ◽  
pp. 22-31 ◽  
Author(s):  
Farhana Islam ◽  
M. Naimul Islam ◽  
Shahirin Shahida ◽  
Harun Ar Rashid ◽  
Nanda Karmaker ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Bending Strength ◽  
Polyester Resin ◽  
Unsaturated Polyester ◽  
Tensile Modulus ◽  
Unsaturated Polyester Resin ◽  
Bending Modulus ◽  
The Matrix ◽  
Jute Fabrics

Jute fabrics reinforced Unsaturated Polyester Resin (UPR)-based composites were prepared by conventional hand lay-up technique. Different proportions (5 to 50% by weight) of fibre content was used in preparation of the composite. Tensile Strength (TS), Tensile Modulus (TM), Bending Modulus (BM), Bending Strength (BS), Impact Strength (IS) of the fabricated composites were studied. Upon each addition of fiber content in the matrix, mechanical properties of the composites were increased. The Tensile Strength (TS) of the 5% and 50% fiber reinforced composites was 18 MPa and 42 MPa respectively. Scanning Electron Microscopy (SEM) showed interfacial properties of the composites and it was revealed that the bond between fiber and matrix was excellent.

Effect of Particle Size on Fracture Toughness of Spherical-Silica Particle Filled Epoxy Composites

2005 ◽  
Vol 297-300 ◽  
pp. 207-212 ◽  
Author(s):  
Soon Chul Kwon ◽  
Tadaharu Adachi ◽  
Wakako Araki ◽  
Akihiko Yamaji
Keyword(s):  
Fracture Toughness ◽  
Particle Size ◽  
Epoxy Resin ◽  
Small Particle ◽  
Volume Fraction ◽  
Silica Particles ◽  
Bending Test ◽  
High Fracture Toughness ◽  
Particle Content ◽  
Spherical Silica

We investigated the particle size effects on the fracture toughness of epoxy resin composites reinforced with spherical-silica particles. The silica particles had different mean particle diameters of between 1.56 and 0.24µm and were filled with bisphenol A-type epoxy resin under different mixture ratios of small and large particles and a constant volume fraction for all particles of 0.30. As the content with the added smaller particle increased, the viscosity of each composite before curing remarkably increased. We conducted the single edge notched bending test (SENB) to measure the mode I fracture toughness of each composite. The fracture surface with the small particle content exhibited more rough areas than the surface with larger particles. The fracture toughness increased below the small particle content of 0.8 and saturated above it. Therefore, near the small particle content of 0.8, the composite had a relatively low viscosity and a high fracture toughness.

ANALISA KEKUATAN MEKANIS SAMBUNGAN LAS KAMPUH V TUNGGAL DAN V GANDA PADA BAJA KARBON RENDAH DENGAN PROSES PENGELASAN SMAW

2021 ◽  
Vol 12 (2) ◽  
pp. 103
Author(s):  
Sudarsono Sudarsono ◽  
Hidayat Hidayat ◽  
Aminur Aminur ◽  
Sarwo Pranoto ◽  
Prinob Aksar
Keyword(s):  
Tensile Strength ◽  
Bending Strength ◽  
Low Carbon Steel ◽  
Welding Process ◽  
Bending Test ◽  
Uniaxial Tensile ◽  
Uniaxial Tensile Test ◽  
Low Carbon ◽  
Shielded Metal Arc Welding ◽  
Metal Arc Welding

Welding is one of the methods widely used in the joining of metals for structural elements. One of the factors that influence the strength of welded metals is types of welding joints. Suitability of the type of welding joint with geometries of base metals is required to obtain welded metal products with optimum properties. In this study an attempt is made to investigate mechanical properties of welded metals with two different types of joints (single-V and double-V) using the shielded metal arc welding (SMAW) process. Low carbon steel with bevel angle of 60° was used in this study. Welding process was performed using current of 70 A with a constant welding speed. The flexural properties and uniaxial tensile properties are studied by three-point bending test and uniaxial tensile test respectively. Test results show that the tensile strength and the bending strength of single-V specimens is 521.64 N/mm2 and 525.11 N/mm2 respectively. In addition, the tensile strength and the bending strength of double-V specimens is 517.33 N/mm2 and  504.24 N/mm2 respectively

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