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All Journal Jurnal Teknik Industri Buletin Udayana Mengabdi Jurnal Energi Dan Manufaktur Jurnal METTEK (Jurnal Ilmiah Nasional Dalam Bidang Ilmu Teknik Mesin) Dinamika Teknik Mesin : Jurnal Keilmuan dan Terapan Teknik Mesin Prosiding Seminar Nasional Teknoka Logic : Jurnal Rancang Bangun dan Teknologi International Journal of Engineering and Emerging Technology Mechanical Engineering for Society and Industry
NPG Suardana
Program Studi Teknik Mesin, Fakultas Teknik Universitas Udayana
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Transportation

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Study of Fiber Treatment and Water Absorption toward Tensile Stength of Coconut Filtrate/Polyester Composite Putu Lokantara; Ngakan Putu Gede Suardana
Jurnal Energi Dan Manufaktur Vol 3, No.1 April 2009
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

Tapis Kelapa (coconut filter) as natural fiber, in this time it resourches very copius but no longer be exploited off hand andwaste though in fact it used for alternative to be composite. The objective of this research is to investigated tensile strength ofcomposite tapis kelapa as reinforcement and epoxy 7120 and hardener versamid 140 as matrix. The fiber is treated with thechemical NaOH with percentage 0,5%, 1% dan 2% in weight, respectively. This research used coconut-tapis fibre which cutas long as 1cm with 0%,5%,7,5%,10% fiber volume fraction, respectively. Soaking time on the water are 24 hour, 48 hour,98 hour and 196 hour, respectively. For testing of speciment in tensile test with ASTM D3039. The result of this researchshown that the composite with no treatment with NaOH have soak the water better than the composite with treatment NaOH.The average of tensile strength with no treatment NaOH less than with treatment NaOH. The highest strength are reached bycomposite with 10% fraction volume on 48 hour soaking time equal to 52 MPa. While the lowest tensile strength are reachedby composite with 0% fraction volume fibre equal to 16,667 MPa. The average of tensile strength that soak in mineral waterbetter than sea water.
Komposit poliester/serat gelas: pengaruh jumlah lapisan serat terhadap sifat mekaniknya NPG Suardana; IW Surata
Jurnal Energi Dan Manufaktur Vol 2, No.1 Juni 2007
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

Technology of polymers and composites progressively expand which had been found of various new composite types with excellence and also it’s excess. Currently, one of the composite materials was used in many industrial of automotive as vehicle body especially for components that needed light material with high strength and high corrosive resistance is Glass Fiber Reinforced Polymer (GFRP). This research investigated whether the addition of fiber layer can increase flexural strength of the composite, and how many the maximum fiber layer or maximum fiber fraction of weight. The experiment used unsaturated polyester Resin type of Yukalac 157 BQTN-EX as matrix, short glass fiber sheet with random orientation (chopped random mat) type of MAT 300 as reinforcement, and methyl etil keton peroxide (MEKPO) as hardener, respectively. The specimens were made by press hand lay-up and then formed and underwent the flexural testing according to standard of ASTM D 790 - 03. From the result and data analysis, it can be concluded that the weight fraction and fiber volume fraction increased with fiber layer. These resulted in the increase of flexural modulus and strength of GFRP. The specific strength and specific flexural modulus had relatively constant value, because the increase of flexural strength will be followed by increased its density. The number of maximum fiber layer in 1 mmcomposite in thickness was 3 layers (MAT 300), which approached the maximum fiber fraction of weight (Wf = 58.69%, 60% maximum).
Pengaruh Panjang Serat pada Temperatur Uji yang Berbeda Terhadap Kekuatan Tarik Komposit Polyester Serat Tapis Kelapa I Putu Lokantara; Ngakan Putu Gede Suardana; I Made Gatot Karohika; Nanda -
Jurnal Energi Dan Manufaktur Vol 4, No.2 Oktober 2010
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh variasi panjang serat dan temperatur udara terhadap kekuatan tarikkomposit polyester tapis kelapa dengan variasi panjang serat tapis kelapa yaitu 5 mm, 10 mm dan 15 mm sedangkan variasitemperatur udara yaitu - 5° C, 10° C dan 25° C.Komposit yang dibuat menggunakan penguat serat tapis kelapa dengan matrik berupa resin unsaturated polyester( UPRs ) jenis Yukalac 157 BQTN-EX dengan 1% hardener jenis MEKPO. Komposit dibuat dengan teknik press hand lay-updengan fraksi volume serat tapis kelapa 12,2%. Perlakuan komposit berpenguat serat tapis kelapa berupa post curingselama 2 jam dengan suhu 65° C. Spesimen uji komposit berpenguat serat tapis kelapa dipotong sesuai standar ASTMD3039 untuk spesimen uji tarik.Hasil pengujian menunjukan variasi panjang serat dan temperatur udara mempengaruhi kekuatan tarik padakomposit berpenguat serat tapis kelapa. Pada komposit panjang serat 5 mm kekuatan tarik maksimal terjadi padatemperatur udara 25° C dengan kekuatan tarik 15,77 MPa, selanjutnya untuk komposit panjang serat 10 mm kekuatan tarikmaksimal terjadi pada temperatur udara 25° C dengan kekuatan tarik 14,47 MPa, sedangkan untuk komposit panjang serat15 mm kekuatan tarik maksimal terjadi pada temperatur udara 25° C dengan kekuatan tarik 12,84 MPa. Untuk moduluselastisitas tarik pada komposit berpenguat serat tapis kelapa, pada komposit panjang serat 5 mm nilai modulus elastisitastarik maksimal terjadi pada temperatur udara 25° C sebesar 297,46 MPa, selanjutnya untuk komposit panjang serat 10 mmnilai modulus elastisitas tarik maksimal terjadi pada temperatur udara 25° C yaitu sebesar 522,47 MPa, sedangkan nilaimodulus elastisitas tarik maksimal pada komposit panjang serat 15 mm terjadi pada suhu 25o C yaitu sebesar 582,43 MPa.
Effect of Fiber Volume Fraction and Water Absorption toward Bending Strength of Coconut Filters/ Polyester Composite I Putu Lokantara; Ngakan Putu Gede Suardana; I Made Gatot Karohika
Jurnal Energi Dan Manufaktur Vol 3, No.2 Oktober 2009
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

The variation of fibre volume and the duration of water soaking take influence on the mechanical properties of composite. This research aim is to know the influence of fraction volume fibre and soaking duration on the mineral watertoward the tensile strength and flexural of polyester-coconut-tapis composite. This research used coconut-tapis fibre which is cut 1 cm in length with 0%, 5%, 7,5%, and 10% fiber volume fraction, unsaturated-polyester (UPRs) matrix resin type Yucalac 157 BQTN-EX, and MEKPO hardener. The flexure specimen are made by press hand lay-up method and cut according ASTM D790-03 for the flexure test. The result of flexure test shows that the duration of soaking and the fiber volume fraction give a significant effect on the flexural strength of composite. The highest strength are reached by composite with 10% fibre volume on 48 hour soaking time equal to 41.994 MPa. The flexure modulus happenend shows increasing until 24 hour soaking time. The highest modulus are reached by composite with 10% fibre volume equal to 7.114 GPa while the lowest are reached by composite with 0% fibre volume equal to 3,023 GPa.
Biokomposit Limbah Plastik Polypropylene Berpenguat Serat Lidah Mertua: Proses Ekstraksi dan Kekuatan Mekanis I Putu Lokantara; Ngakan Putu Gede Suardana
Jurnal Mettek: Jurnal Ilmiah Nasional dalam Bidang Ilmu Teknik Mesin Vol 5 No 2 (2019)
Publisher : Program Studi Magister Teknik Mesin Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/METTEK.2019.v05.i02.p10

Abstract

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
EFFECT OF ALKALI TREATMENT ON THE TENSILE STRENGTH OF LIDAH MERTUA FIBER/ POLYPROPYLENE RECYCLED BIOCOMPOSITE I Putu Lokantara; NPG Suardana; IW Surata; INS Winaya
International Journal of Engineering and Emerging Technology Vol 4 No 2 (2019): July - December
Publisher : Doctorate Program of Engineering Science, Faculty of Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/IJEET.2019.v04.i02.p09

Abstract

The purpose of this study was to determine the effect of alkali fiber treatment on the tensile strength of composites. The material in this study was recycled polypropylene from plastic beverage glass and lidah mertua fiber with a fiber length of 180 mm, fiber treatment using 5% NaOH and without treatment. Composite specimens were prepared using the hot press method at 170oC for 120 minutes. Tensile testing with the dimensions of the test specimen refers to ASTM D-638. The results of the test carried out the maximum tensile strength value of 71,606 MPa in fiber with 5% alkali treatment. The tensile strength of composites with alkali treatment increased 223% compared to the tensile strength without alkali
The Hardness Analysis of Epoxy Composite Reinforced with Glass Fiber Compared to Nettle Fibers I Gede Putu Agus Suryawan; NPG Suardana; IN Suprapta Winaya; IWB Suyasa
International Journal of Engineering and Emerging Technology Vol 5 No 1 (2020): January - June
Publisher : Doctorate Program of Engineering Science, Faculty of Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/IJEET.2020.v05.i01.p02

Abstract

The purpose of this study is to compare the hardness of glass fiber reinforced composite materials with the hardness of netted fiber-reinforced composite materials. Glass fiber is a commercial fiber that has been used in various industries while nettle fiber is a natural fiber that is more environmentally friendly. Composite material has several advantages, namely the form that can be adjusted, high strength, lightweight and resistant to corrosion. Nettle plants are plants that have strong fibers in the bark. In this study, nettle composites were made with variations in the weight fractions of 10%, 15%, and 20%. Hardness testing used the Shore D Durometer. The results of the hardness value of glass fiber composites with weight fractions of 10%, 15%, and 20% are 82.4 Shore D, 84.5 Shore D, and 86.5 Shore D, show an increase in stable hardness because the glass fiber factor is already commercial, the fiber strength is evenly distributed. The hardness values of nettle fiber composites with fractions of 10%, 15%, and 20% are 81.6 Shore D, 85 Shore D, and 86.6 Shore D, the hardness value of each nettle composite increases with the addition of fiber weight fraction but is unstable due to the strength factor of each nettle single fiber uneven. Furthermore, with the right treatment, nettle fiber can replace glass fiber.
KETAHANAN AUS LAPISAN Ni-Cr PADA DINDING SILINDER LINER DENGAN MENGGUNAKAN POWDER FLAME SPRAY COATING I Wayan Gede Arthana; I Made Widyarta; Ngakan Putu Gede S Suardana
Logic : Jurnal Rancang Bangun dan Teknologi Vol 14 No 2 (2014): July
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat (P3M) Politeknik Negeri Bali

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Abstract

Piston yang bergerak bolak-balik mengakibatkan keausan pada dinding cylinder liner bagian dalam, hal ini akan menimbulkan penambahan kelonggaran antara torak dan silinder, sehingga dapat menyebabkan kebocoran gas, tekanan kompresi berkurang dan tenaga yang dihasilkan juga berkurang. Agar keausan silinder tidak terlalu banyak maka diupayakan bahan yang digunakan tahanan aus dan juga tahan terhadap panas. Akan tetapi penggunaan bahan yang tahan aus serta tahan panas akan mengakibatkan biaya produksi akan semakin meningkat. Teknologi pelapisan material telah menjadi perhatian besar di lingkungan penelitian dan industri dikarenakan merupakan cara yang efektif dan secara ekonomis lebih murah dalam menahan degradasi seperti keausan, oksidasi, korosi, atau kerusakan pada suhu tinggi tanpa mengorbankan material sampel yang dilapisinya. Oleh karena itu penelitian ini dikaji pengaruh lapisan Ni-Cr menggunakan Powder flame spray coating terhadap kekerasan dan ketahanan aus dinding silinder liner menggunakan teknik XRF, mikroskop optik, SEM, uji kekerasan dan keausan. Dari hasil observasi menunjukkan bahwa setelah dilakukan pelapisan dengan teknik powder flame spray coating menggunakan bahan pelapis Ni-Cr menghasilkan kekerasan permukaan yang cukup signifikan yaitu sebesar 536 HV dan 206 HV tanpa pelapisan. Perbedaan ketebalan lapisan tidak mempengaruhi dari nilai kekerasan pada permukaan benda uji. Distribusi kekerasan pada posisi cross-section hasil pelapisan menunjukkan kekerasan rata-rata sebesar 536 HV. Volume keausan benda uji yang dilapiskan menunjukkan nilai sebesar 12,04x10-3 mm3 dibandingkan dengan tanpa pelapisan sebesar 67,5x10-3 mm3. Benda uji yang memiliki kekerasan lebih tinggi menunjukkan nilai Coefficient of Friction yang lebih rendah.
PERANCANGAN PAHAT BOR MULTIDIAMETER Yustinus Hendro Mudiyarto; I Made Widiyarta; NPG Suardana
Logic : Jurnal Rancang Bangun dan Teknologi Vol 14 No 2 (2014): July
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat (P3M) Politeknik Negeri Bali

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Abstract

Tuntutan penyelesaian pekerjaan dalam dunia konstruksi semakin lama semakin singkat, terutama dalam pembuatan alat bantu untuk mempercepat pembuatan lubang pada baja konstruksi . Ketika tuntutan jumlah pembuatan lubang pada baja konstruksi yang sangat banyak dan harus diselesaikan dalam waktu yang cepat, maka muncul ide bagaimana agar suatu lubang dapat dibuat dalam waktu yang singkat. Tujuan penelitian ini adalah untuk merancang sebuah alat bantu pahat bor multidiameter dengan material St.60 yang mampu membuat lubang diameter 24mm dengan sekali proses pengeboran. Pembuatan prototype alat bantu pahat bor multidiameter ini menggunakan mesin-mesin konvensional (bubut, milling, potong, gerinda). Setelah prototype selesai dibuat maka dilakukan pengujian, pengujian pahat bor multidiameter ini dilakukan dengan proses pengeboran menggunakan mesin bor magnet pada material besi WF-25 untuk menghasilkan lubang diameter 24mm. Alat potong yang dipakai menggunakan material Carbide. Hasil dari penelitian ini adalah berhasil membuat prototype pahat bor multidiameter yang mampu membuat lubang diameter 24mm.
Pengaruh Waktu Perendaman terhadap Daya Serap Air dan Drop Test pada Paving Block Plastik-Pasir N P G Suardana; Rizki Andika Putra; C I P K Kencanawati
Prosiding Seminar Nasional Teknoka Vol 5 (2020): Prosiding Seminar Nasional Teknoka ke - 5
Publisher : Fakultas Teknik, Universitas Muhammadiyah Prof. Dr. Hamka, Jakarta

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Abstract

Garbage is a problem that exists in every province in Indonesia including th e Province of Bali. Most of it comes from plastic waste, which causes many problems for which the solution to handle them is still unsolved. Researchers used an alternative by means of the chopping process and the process of liquefying plastic waste which is used as a paving block. The materials used include sand with a grain size of 2 -3 mm as reinforcement and plastic waste as a cement substitute binder. Plastic and sand are mixed in a furnace heatedat 200 °C. The testing process for plastic-sand paving blocks uses several standards as a reference, such as SNI-03-0691 1996 for the quality requirements of concrete bricks and ASTM D440 -86 for the Standard Test Method of Drop Shatter Test for Coal. This research was conducted to determine the effect of water immersion time on the physical and mechanical characteristics of plastic-sand paving blocks. The immersion was carried out consecutively for 15, 30, 45, and 60 days, then a drop test was carried out from a height of 3m for each immersion time. The results showed that the immersion time affected the percentage value of absorption and damage to plastic-sand paving blocks. The highest value of absorption and damage was obtained in paving blocks with a ratio of 1: 4 and a long soaking time of 60 days.
Co-Authors A.A.A. Triadi, A.A.A. Aldri Frinaldi Cok Istri Putri Kusuma Kencanawati Dwidiani, Ni Made I .G. P. Agus Suryawan I Gusti Ketut Puja I Gusti Ngurah Nitya Santhiarsa I Ketut Adi Atmika I Ketut Adi Sugita I Ketut Jaya Lagawa I Ketut Suarsana I Made Gatot Karohika I Made Widiyarta I Made Widyarta I Nyoman Budiarsa . I Nyoman Gede Wardana I Nyoman Suarsana I Nyoman Suprapta Winaya I W BUDIARSA SUYASA I W. Y. Swara I Wayan Gede Arthana I Wayan Surata IWY Swara l Gusti Ngurah Janardana Nanda - Negara, D.N.K.P. Ni Made Dwidiani putri kusuma kencanawati Putu Lokantara Rizki Andika Putra Robby GDS Si Putu Gede Gunawan Tista Steven FS Suarsana, K. Sunu, P.W. Wayan Nata Septiadi Willy Satrio Nugroho Yustinus Hendro Mudiyarto