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All Journal Jurnal Sains dan Teknologi Jurnal Dinamis Jurnal Teknosains Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Jurnal Rekayasa Material, Manufaktur & Energi JURNAL PENDIDIKAN TAMBUSAI Community Development Journal: Jurnal Pengabdian Masyarakat BERKAT: Jurnal Pemberdayaan Masyarakat Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) SAINSTEK Proksima
Muftil Badri
Department Of Mechanical Engineering, Faculty Of Engineering, Universitas Riau, Indonesia
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology 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 Environmental Science Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Other

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Studi Karakteristik Kekuatan Tarik Dan Harga Impak Material Polymeric Foam Sandwich Panels Komposit Dengan Variasi Perlakuan Serat Tandan Kosong Sawit Rahmat, Ridho Zarli; Badri, Muftil
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 1 Januari s/d Juni 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

This study refers to the characteristic studies of tensile strength and impact rates of polymeric foam materials composite sandwich panels and variations in the treatment of empty palm bunch fibers. This research is done by making specimen with different fiber treatment which then will be tested tensile strength and impact price to be analyzed. The results of the analysis in the study will be evaluated and compared each other. The purpose of this research is to obtain a board that can absorb impact energy and which has tensile strength. In the manufacture of sandwich panels specimen is done by varying the boiling of fiber, fiber counting and long fiber counting. The composite obtained is a plate with a thickness of 3 mm. The number of specimens made was 42 specimens. Composite specimens with TKS fiber boiling treatment in aquades with enumeration (counting) does not affect the value of the ultimate tensile strength, but increasing the value of the impact price and decreasing as the enumeration took place. Composite specimens with TKS fiber immersion treatment in NaOH solution with enumeration decreased the value of the ultimate tensile strength during the enumeration time, but did not affect the value of the impact price. Composite specimens with TKS fiber boiling treatment with enumeration did not affect the value of ultimate tensile strength and composite impact price.Keywords :Ploymeric Foam, Fiber treatment, Sandwich Panels, Empety palm bunch fibers.
Desain Profil C+ Struktur Baja Ringan Pada Konstruksi Rangka Atap Okazar, Okazar; Badri, Muftil; Arief, Dodi Sofyan
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Light gauge steel is the latest innovation in overcoming material problems in the use of roof construction,especially the roof of the house. Generally, the construction of the roof of the house was made of wood, butbecause of the scarcity of wood made there should be a diversion in the use of materials. The use of light gaugesteel as a roof construction of the house has not been fully accepted by all of societies in general, due toconcerns in its strength. So this thesis discusses about the strength of the material and search for a better profilewithout any reduction of the existing structural material in the market. The profile design is the development ofan existing profile design or commercial profile. Testing of the comparison of new profile design results withcommercial profiles is done by simulation of Autodesk Inventor 2010. Simulation results are in the form ofcomparison of numbers. The result of the design number are better when compared from the commercialprofile then the design was chosen with through considerations.Keywords: Light Gauge Steel, Autodesk Inventor 2010
Simulasi Distribusi Tegangan Kanvas Rem Cakram Dengan Geometri Permukaan Yang Baru Untuk Sepeda Motor Standar Kurniawan, Anggi; Badri, Muftil
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5, No 1 (2018): Wisuda April Tahun 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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In this research refers to the variation of the surface geometry design of the motorcycle disc brake pads. The purpose of this study was to obtain the surface geometry of the disc brake pads and obtain the stress distribution from the surface geometry of the standard motorcycle disc brake pads. In this study was analyzed the stress that occurs on the surface of the disc brake pads. The results of the disc brake pads analysis in the study was evaluated and compared with commercial brake pads products. In the design of surface geometry of motorcycle disc brake pads using geometry modeling software (design modeler) on ANSYS release 12.1. The designs made in this study were varied in 6 designs that being compared and selected from the design, which having the highest stress distribution value. From the simulation result, it was found that having the highest stress distribution value disc brake pads surface geometry for standard motorcycle was on brake pads design 4, which can increase the tension on the surface of the disc brake pads with maximum equivalent stress value of 4.2186 MPa and its minimum value of 0.019341 MPa.Keywords: Geometry surface, disc brake pads, stress distribution, ANSYS simulation.
Manufaktur Bodi Kendaraan Shell ECO Marathon (SEM) Tipe Urban Bahan Komposit Serat Karbon Sutarto, Sutarto; Badri, Muftil
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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In the development of manufacturing industry the use of composite materials began to be widely used. One of them is composite by using fiber glass or fiber carbon, because of its characteristic that can be designed close to certain needs. In addition the specific strength and stiffness are far exceeding the engineering material in general. This research uses carbon fiber composite material as vehicle body material Shell Eco Marathon (SEM), Which a fraction volume of 70% resin polyester and 30% of carbon fiber. The composite is made using Hand Lay Up method that produces vehicle body SEM of consist of main frame and styrofoam. The result of manufacturing the SEM vehicle body is obtained, so that it can be used as an Urban SEM vehicle body.Keywords: Composite, Carbon Fiber, Hand Lay Up, Shell Eco Marathon (SEM)
Karakteristik Mekanik Komposit Polymeric Foam Dengan Matriks Polyester Resin Serat Tandan Kosong Sawit (TKS), Serat Pinang, Dan Kombinasi Serat TKS-Pinang Irawan, Agung Dwi; Badri, Muftil
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 1 Januari s/d Juni 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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In this era, research application of composite such as furniture, aerospace, automotive components made from synthetic fibers. Natural fibers can substitute of synthetic fibers. The one of natural fiber oil palm empty fruits bunch (OPEFB) is composite was waste residue of the processing palm oil utilization which use as compost and fuel of combustion proces in boiler palm oil mill. Generally, the part of areca usually use is nut, while fibers are throw 5% NaOH for 4 hours and boiling distilled water for 1 hour as a composite of a polymeric foam to the mechanical properties of the composite. OPEFB and areca fibers use as the reinforcement and polyester resin use as matrix. In this research, method of manufacture used Vacuum Assisted Resin Infusion (VARI). The results showed the highest value of yield strength 4.76 MPa, tensile strength 16.08 MPa, fracture strength 16.08 MPa in the areca fiber composite treatment NaOH 5%, for modulus elasticity 22.49 GPa in the areca fiber treatment of boiling distilled water, strain total 7.81% in the OPEFB fiber composite treatment immersion of 5% NaOH. Impact price 1.38 J/mm2 in the OPEFB fiber composite treatment immersion of 5% NaOH. Keywords : areca fiber, boiling distilled water, NaOH 5%, OPEFB, polyester resin, VARI
Studi Potensi Pasir Sungai Di Sungai Rokan Sebagai Pasir Cetak Pada Pengecoran Logam Sihite, Pernando; Masnur, Dedy; Badri, Muftil
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Rokan river is one of the the four biggest river in Province of Riau which contains abundant of sand. The utilization of the sand has not reached an optimum level due to the limits of information for optimal profitability with it is not documented and therefore it is used only for building’s materials. However some literatures indicate that the sand is suitable for foundry use based on the physical characteristics. In this paper, a laboratory investigations of four critical foundry properties; clay content, Grain Finest Number (GFN), moisture content, and permeability of the sand is conducted. The outcome of this research to determine the potency of Rokan river’s sand as molding sand in Sand Casting. The result shows all the samples are potential as the molding sand through certain treatments. The most potential river sand is  downstream river’s sand with the following characteriscs: clay content 1.29%, GFN 27.25, moisture content 1.35% and gas permeability 10.9564 cm/min while the upstream river’s sand:  clay content 1.24%, GFN 17.94, moisture content 1.31% and gas permeability 12.6524 cm/min.  Keywords: Rokan River Sand, Characterization
Pengaruh campuran bahan bakar pertalite-bioetanol biji sorghum pada mesin bensin Abdi Hanra Sebayang; Husin Ibrahim; Surya Dharma; Arridina Susan Silitonga; Berta Br Ginting; Natalina Damanik
Jurnal Teknosains Vol 9, No 2 (2020): June
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.40502

Abstract

The depletion of fossil fuels, rising of earth temperatures and declining of air quality are an unavoidable phenomenon today. This condition is a result of increased and excessive use of fossil fuels. Bioethanol fuel is one solution to reduce this problem that is sourced from renewable raw materials. Sorghum seeds are raw materials that have the potential to be made bioethanol due to they have a high carbohydrate content (70%). The test is performed the use of pertalite-bioethanol blends fuels was on a four-stroke gasoline engine without modification. The percentage of the mixture volume of fuel used is 10% bioethanol-90% pertalite (E10), 15% bioethanol-85% pertalite (E15) and 20% bioethanol-80% pertalite (E20). Engine speeds vary from 1000 to 4000 rpm, and properties of the sorghum seeds bioethanol-pertalite blends are measured and analyzed. The purpose of this study is to investigate engine performance and exhaust emissions at gasoline engine by using the sorghum seeds bioethanol-pertalite blends with different mixed ratios (E10, E15 and E20). The Engine performance includes engine torque, brake specific fuel consumption (BSFC) and thermal brake efficiency (BTE) analyzed. In addition, carbon monoxide (CO), hydrocarbon (HC), and nitrogen oxide (NOx) emissions are measured as gasoline engine exhaust emissions. The results show that BSFC decreased while BTE increased for a fuel blends containing 20% bioethanol at 3500 rpm engine speed, with each maximum value of 246.93 g/kWh and 36.28%. It is also found that CO and HC emissions are lower for the sorghum seeds bioethanol-pertalite blends. Based on the research results, it can be concluded that the sorghum seeds bioethanol-pertalite blends can improve engine performance and reduce exhaust gas emissions.
STUDI POTENSI PASIR SUNGAI DI PROVINSI RIAU SEBAGAI PASIR CETAK PADA PENGECORAN LOGAM Pernando Sihite; Dedy Masnur; Muftil Badri; Putri Nawangsari
Jurnal Sains dan Teknologi Vol 13, No 2 (2014): Jurnal Sains dan Teknologi
Publisher : Fakultas Teknik Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (588.793 KB) | DOI: 10.31258/jst.v13.n2.p%p

Abstract

Provinsi Riau memiliki potensi pasir sungai yang sangat melimpah karena dilalui 15 sungai diantaranya 4 sungai yang besar. Pemanfaatannya belum optimal karena digunakan untuk bahan bangunan saja, akan tetapi pasir sungai dapat dimanfaatkan sebagai pasir cetak pada pengecoran logam. Tujuan penelitian ini untuk mengetahui potensi pasir sungai di provinsi Riau yang dapat dimanfaatkan sebagai pasir cetak serta treatment untuk meningkatkan kualitas pasir sungai. Analisis potensi pasir sungai dilakukan dengan mengambil data karakterisasi masing-masing sampel pasir sungai. Karakterisasi pasir sungai diperoleh dengan melakukan pengujian yaitu pengujian kadar lempung, distribusi pasir, kadar air, dan permeabilitas. Hasil pengujian menunjukkan bahwa semua sampel pasir sungai berpotensi sebagai pasir cetak akan tetapi harus mengalami treatment. Pasir sungai yang paling berpotensi sebagai pasir cetak yaitu pasir sungai Kampar bagian hilir memenuhi kriteria kadar air (5,60%) dan permeabilitas (9,5895 cm/menit), pasir sungai Inderagiri bagian hulu dengan kadar air (6,00%) dan permeabilitas (9,9566 cm/menit) dan pasir sungai Inderagiri bagian hilir dengan kadar air (2,19%) dan permeabilitas (12,3741 cm/menit) sedangkan pasir sungai Rokan bagian hulu, Rokan bagian hilir dan Kampar bagian hulu hanya memenuhi kriteria permeabilitas (10,9564 cm/menit - 12,6524 cm/menit). Treatment yang harus dilakukan untuk sungai Rokan bagian hulu, Rokan bagian hilir dan Kampar bagian hulu yaitu penambahan lempung, air dan penghalusan butir sedangkan pasir sungai lainnya yaitu penambahan lempung, dan penghalusan butir.Kata kunci: pasir sungai, karakterisasi, pasir cetak, treatment
PENGARUH PEMBEBANAN STATIK TERHADAP PERILAKU MEKANIK KOMPOSIT POLIMER YANG DIPERKUAT SERAT ALAM Muftil Badri M
Jurnal Dinamis No 4 (2009)
Publisher : Jurnal Dinamis

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Abstract

AbstrakPenelitian ini bertujuan untuk mengetahui karakteristik mekanik komposit polimer yang diperkuat serat alam. Karakteristik mekanik yang diamati adalah kekuatan tarik statik, modulus elastisitas, dan permukaan patahan secara makroskopik. Karakteristik tersebut dapat diperoleh melalui pengujian tarik statik. Jenis polimer yang digunakan sebagai matriks adalah resin termoset tak jenuh seri 157 BQTN-Ex sedangkan serat alam yang dimanfaatkan berasal dari sekam padi, pelepah pisang, dan sabut kelapa. Spesimen uji tarik dibuat sesuai dengan standar ASTM D638. Komposisi resin yang digunakan adalah 80% sedangkan serat adalah 20% dari volume spesimen. Berdasarkan hasil uji tarik statik diperoleh karakteristik kekuatan tarik dan modulus elastisitas yang bervariasi untuk jenis serat yang berbeda. Kekuatan tarik dan modulus elastisitas rata-rata komposit polimer yang diperkuat serat sekam padi adalah 86,7 MPa dan 855,7 MPa. Kekuatan tarik dan modulus elastisitas rata-rata komposit polimer yang diperkuat serat pelepah pisang adalah 59,1 MPa dan 317,6 MPa. Kekuatan tarik dan modulus elastisitas rata-rata komposit polimer yang diperkuat serat sabut kelapa adalah 45,0 MPa dan 159,5 MPa. Berdasarkan pengamatan terhadap permukaan patahan dapat dikatakan bahwa karakteristik patahan komposit polimer yang diperkuat serat alam dipengaruhi oleh ikatan matriks terhadap serat.Kata kunci: Komposit polimer; sekam padi; pelepah pisang; sabut kelapa; kekuatan tarik; modulus elastistias; permukaan patahan.
RESPON POLYMERIC FOAM YANG DIPERKUAT SERAT TANDAN KOSONG KELAPA SAWIT (TKKS) AKIBAT BEBAN TEKAN STATIK DAN IMPAK (SIMULASI NUMERIK Muftil Badri M; Bustami Syam; Samsul Rizal; Krishna Surya Buana
Jurnal Dinamis No 7 (2010)
Publisher : Jurnal Dinamis

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Abstract

AbstrakPenelitian ini bertujuan untuk menyelidiki respon polymeric foam yang diperkuat serat TKKS akibat beban tekan statik dan dinamik melalui eksperimen dan simulasi numerik. Respon yang akan diamati adalah tegangan maksimum, kekuatan retak/patah, serta distribusi tegangan. Karakteristik material berupa modulus elastisitias dan analisa kerusakan akan diselidiki dalam penelitian ini. Secara eksperimen, respon dan karakteristik beberapa material, yaitu: resin termoset, polyurethane, dan polymeric foam yang diperkuat serat TKKS akan diamati melalui uji tekan statik aksial. Secara numerik, respon polymeric foam yng diperkuat serat TKKS yang akan diselidiki adalah distribusi tegangan dari beberapa jenis pembebanan, yaitu: tekan statik aksial, tekan bending, dan tekan impak Split Hopkinson Pressure Bar (SHPB). Spesimen uji tekan statik aksial dibuat berdasarkan standar ASTM D-1621-00. Spesimen uji polymeric foam terdiri dari beberapa material penyusun dengan persentase massa yang berbeda, yaitu: 60 % resin jenis 157 BQTN Ex Series sebanyak, 20% polyurethane, 5% serat TKKS yang dihaluskan, serta 5% katalis methyl ethyl keton proxide (MEKPO). Spesimen uji dieksekusi menggunakan alat uji Shimadzu Servopulser. Analisa numerik melalui simulasi komputer menggunakan software berbasis metode elemen hingga (MEH) yaitu ANSYS Rel. 5.4 untuk simulasi tekan statik aksial dan bending sedangkan MSC/NASTRAN Rel. 4.5 untuk simulasi impak tekan SHPB. Dari hasil uji tekan statik aksial diperoleh nilai modulus elastisitas resin sebesar 118,78 MPa, polyurethane 0,18 MPa, dan polymeric foam yang diperkuat serat TKKS sebesar 17,22. Tegangan maksimum yang direspon oleh resin adalah 0,582 MPa, polyurethane 0,0044 MPa, dan polymeric foam yang diperkuat serat TKKS sebesar 0,106 MPa. Nilai kekuatan retak terhadap masing-masing spesimen uji juga berbeda, kekuatan retak resin adalah 1,18 MPa, polyurethane sebesar 0,075 MPa, dan polymeric foam yang diperkuat serat TKKS sebesar 0,133 MPa. Kegagalan resin akibat beban tekan statik aksial ditandai dengan perbesaran ukuran penampang lateral (barreling), kerusakan polyurethane ditandai dengan terbentuknya lipatan-lipatan permanen di dinding spesimen yang menunjukkan respon plastis sempurna, dan kegagalan polymeric foam yang diperkuat serat TKKS ditandai dengan pembesaran rongga-rongga yang acak. Berdasarkan hasil simulasi numerik diperoleh tegangan Von Mises maksimum terhadap polymeric foam yang diperkuat serat TKKS akibat beban statik aksial sebesar 0,186 MPa sedangkan tegangan maksimum Von Mises akibat bending statik nilainya jauh lebih besar, yaitu 50,518 MPa. Hasil simulasi bending statik menunjukkan bahwa titik kritis terjadi di lokasi beban diberikan. Untuk beban impak, hasil simulasi menunjukkan bahwa polymeric foam yang diperkuat serat TKKS memiliki tegangan maksimum Von Mises impak bending sebesar 69,44 MPa dan impak SHPB sebesar 102, 96 MPa. Hasil simulasi impak menunjukkan bahwa kenaikan waktu impak menyebabkan penurunan terhadap tegangan impak.Kata kunci: polymeric foam, serat TKKS, modulus elastisitas, tegangan, beban tekan statik aksial, tekan bending, impak SHPB
Co-Authors Adhy Prayitno Afdila Muflihana Agus Reforiandi Agus Surya Permana Aguswandi Aguswandi Aji Mahmud Solih Alexander Sebayang Andi Arief Kusuma Anita Susilawati Anita Susilawati Arridina Susan Silitonga Azridjal Aziz Barasa, Frandi Bayu Wiguna Benar Benar Bustami Syam Darmansyah Darmansyah Dedy Masnur, Dedy Dodi Sofyan Arief Dodi Sofyan Arief Dodi Sofyan Arief Dodi Sofyan Arief Dodi Sofyan Arief, Dodi Sofyan Dyna Ayunita Efrata Tarigan Eko Jadmiko Erik Johanes Sitio Erik Johannes Sitio Erik Sitio Johanes Erikson Siregar Fajar Dwi Junianto Frandi Barasa Frandi Barasa Ibrahim, Husin Irawan, Agung Dwi Iwan Kurniawan Jery Indra Putra Harianja Johar Simaskot Jon Prisno Jon Prisno Riduan Krishna Surya Buana Kurniawan, Anggi Liwat Tarigan M A Chozin M. Dalil Mardani Sebayang Michael Simorangkir Mohammad Dalil Natalina Damanik Okazar, Okazar Panji Adino Pernando Sihite Pernando Sihite, Pernando Pindo Evans Manuel Damanik Prisno, Jon Putri Nawangsari Rahmat, Ridho Zarli Ridho Zarli Rahmat Ridho Zarli Rahmat Ridwan Abdurrahaman Rosmaida Tambun Sihar Siahaan Sopar Parulian Surya Dharma Sutarto Sutarto Syafirman Pramija Yohanes - Yohanes Yohanes Yohanes Yohanes Yohanes Yohanes