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FLYWHEEL : Jurnal Teknik Mesin Untirta
Published by Universitas Sultan Ageng Tirtayasa
ISSN : 24077852     EISSN : 25977083     DOI : https://doi.org/10.36055/fwl.v0i0.
Core Subject : Science, Engineering,
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation
The journal publishes original and (mini)review articles covering the concepts of materials science, mechanics, kinematics, thermodynamics, energy and environment, mechatronics and robotics, fluid mechanics, tribology, cybernetics, industrial engineering and structural analysis. The journal follows new trends and progress proven practice in the mechanical engineering and also in the closely related sciences as are electrical, civil and process engineering, medicine, microbiology, ecology, agriculture, transport systems, aviation, and others, thus creating a unique forum for interdisciplinary or multidisciplinary dialogue.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 25 Documents
 1   2   3 
Search results for , issue "Volume V Nomor 1, April 2019" : 25 Documents clear
The Effect of Temperature and Time of Gasification Process and The Addition of Catalyst to The Composition of The Combustible Gas from The Wastes of Tobacco Leaves With Gasifier Updraft Fatah Sulaiman; Endang Suhendi; Nindya Prastuti; Okta Abdul Choir
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume V Nomor 1, April 2019
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v0i0.4821

Abstract

The increasing industrial production is causing more of energy consumption needed. Tobacco leaves are waste from cigarette production that can be use as alternative biomass energy  to solve the problems of the energy crisis in the near future. Gasification is the conversion of solid carbon raw materials from biomass by the partial oxidation to be combustible gas (CO, H2, and CH4) as an energy source. This research uses the fixed-bed reactor with capacity of 300 grams by the flow of updraft and raw material of waste tobacco leaves that have a size -14 + 18 mesh. The influence of temperature was research on 700 oC, 800 oC, and 900 oC with the reaction time for 20 minutes and the addition of a catalyst K2CO3. gasification medium used air and steam with the constant flow rate 0.504 m3/hour air and 0.0555 kg/minutes steam. Step of the process with the preparation of raw materials, the gasification process, and analysis of gas products. The result of the gasification process analysed using the gas chromatography, and the best results were obtained on the temperature 700 oC in the process time for 10 minutes produced combustible gas are CO = 22.82 % v, H2 =  26.82 % v, CH4 = 7.09 % v. increasing production gas happened when a catalyst K2CO3 is added, the producting  of combustible gasses are CO = 52.76 % v, H2 = 23.46 % v, CH4, = 3.23 % v
Produksi Hidrogen Melalui Reaksi Hasil Canai Dingin Paduan Al-Sn-Zn Dengan Larutan NaOH Ali Alhamidi; Esky Yanurdin; M Fitrulloh
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume V Nomor 1, April 2019
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v0i0.4823

Abstract

Hidrogen merupakan salah satu dari energi terbarukan yang banyak dikembagkan sekarang ini, karena jumlahnya yang melimpah dialam dan ramah lingkungan. Reaksi hidrolisis antara aluminium (Al) dengan air murni dapat menghasilkan gas hidrogen. Namun, lapisan passive pada permukaan Al menghalangi jalannya reaksi. Penelitian ini bertujuan untuk mengetahui pengaruh salah salah satu unsur seperti timah (Sn) dan seng (Zn) terhadap reaksi hidrolisis pada larutan NaOH serta penambahan deformasi canai dingin pada paduan Al–Sn–Zn yang diharapkan mampu melindungi dan merusak lapisan passive pada Al. Pada penelitian ini, sampel dibuat dengan memadukan Al dengan Sn dan Zn dengan teknik pengecoran pada paduan Al-3Sn-Zn (wt.%) dengan variasi komposisi Zn (wt.%): 0%; 2%; 4% dan 6% serta paduan Al–Sn–3Zn (wt.%): dengan variasi komposisi Sn (wt.%): 0%; 2%; 4% dan 6%. Paduan kemudian dilakukan homogenisasi selama 24 jam. Sampel dilakukan canai dingin dengan reduksi sebesar 60%. Reaksi hidrolisis paduan dilakukan dengan larutan NaOH 0,9 M. Hasil menunjukan bahwa produksi volume hidrogen yang didapat sangat rendah dengan konversi efisiensi (%) terbesar yaitu 3,3 % pada sampel paduan 91 Al–3Sn–6 Zn (wt.%) dan terendah pada sampel paduan 97Al–0Sn–3 Zn (wt.%) yaitu sebesar 1,08%. Hasil analisa XRD pada sampel paduan sebelum reaksi menunjukan bahwa tidak terbentuk fasa intermetalik dan hanya terbentuk fasa tunggal Al dan Sn, kemudian setelah sampel direaksikan dengan larutan NaOH 0,9 M terbentuk senyawa Al(OH)3 dan AlOOH yang mempengaruhi laju reaksi hidrolisis paduan Al–Sn–Zn.
THE APPLICATION OF VIBRATION SYSTEM on DRYER MACHINE to DRY RDF and AGRICULTURAL PRODUCTS by using GREEN INCINERATOR La Ode M. Firman
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume V Nomor 1, April 2019
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v0i0.4588

Abstract

Increasing heat and vapor transfer between air and product to be dried is an important issue in drying of Refuse Derived Fuel (RDF) and agricultural products.  Generally, manual mixing is used in order to increase the contact area between air and product to be dried. The applications of vibration system on dryer machine can be used to dry RDF and agricultural products. Even if the use of dryer machines has been widely used to dry RDF and agricultural products with avoiding the heat loss needs to be verified. The observations shown that the using of vibration system for moving RDF and agricultural products were on the shelf could not be moved optimally. The previous study found that the spring load on dryer machine was too large and most of the surface of RDF and agricultural products were on the shelf could not get hot air flow. That’s why the spring used as pedestal of shelves would be broken fast and on a specific moment RDF and agricultural products must be taken out of the drying chamber to be manually moved. To solve the problems and to develop the results of previous study, then it needs to do the study about analysis, simulation and experimental of vibration. In this study, vibration was analyzed to having an insight on suitable condition of the dryer machine for use in drying RDF and agricultural products.  Beside that the study only uses an unbalance mass and it does not use a piston engine, so spring load would be smaller. The objectives of the study is to perform analysis, simulation and experimental of vibration in order that the RDF and agricultural products are on the each shelf can be dried fast and moved optimally. The study use observation, literature study, analysis, simulation and experimental methods and cashew nuts as the material tested on the each shelf. The study results show that the condition of vibration approached resonance cause cashew nuts placed on the each shelf could be moved optimally, therefore the surface of RDF and agricultural products were on the shelf could get hot air flow. The final moisture content of vibrated samples was lower than the samples without vibration.
THE APPLICATION OF VIBRATION SYSTEM on DRYER MACHINE to DRY RDF and AGRICULTURAL PRODUCTS by using GREEN INCINERATOR La Ode M. Firman
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume V Nomor 1, April 2019
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v0i0.4589

Abstract

Increasing heat and vapor transfer between air and product to be dried is animportant issue in drying of Refuse Derived Fuel (RDF) and agricultural products. Generally, manual mixing is used in order to increase the contact area between air andproduct to be dried. The applications of vibration system on dryer machine can be used todry RDF and agricultural products. Even if the use of dryer machines has been widely usedto dry RDF and agricultural products with avoiding the heat loss needs to be verified. Theobservations shown that the using of vibration system for moving RDF and agriculturalproducts were on the shelf could not be moved optimally. The previous study found that thespring load on dryer machine was too large and most of the surface of RDF and agriculturalproducts were on the shelf could not get hot air flow. That’s why the spring used as pedestalof shelves would be broken fast and on a specific moment RDF and agricultural productsmust be taken out of the drying chamber to be manually moved. To solve the problems andto develop the results of previous study, then it needs to do the study about analysis,simulation and experimental of vibration. In this study, vibration was analyzed to having aninsight on suitable condition of the dryer machine for use in drying RDF and agriculturalproducts. Beside that the study only uses an unbalance mass and it does not use a pistonengine, so spring load would be smaller. The objectives of the study is to perform analysis,simulation and experimental of vibration in order that the RDF and agricultural products areon the each shelf can be dried fast and moved optimally. The study use observation,literature study, analysis, simulation and experimental methods and cashew nuts as thematerial tested on the each shelf. The study results show that the condition of vibrationapproached resonance cause cashew nuts placed on the each shelf could be moved optimally,therefore the surface of RDF and agricultural products were on the shelf could get hot airflow. The final moisture content of vibrated samples was lower than the samples withoutvibration.
SIMULASI SITEM DINAMIS DALAM PERANCANGAN MITIGASI RISIKO PENGADAAN MATERIAL ALAT EXCAVATOR DENGAN METODE FMEA DAN FUZZY AHP Asep Ridwan; Putro Ferro Ferdinant; Nur Laelasari
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume V Nomor 1, April 2019
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v0i0.5242

Abstract

Pengadaan merupakan salah satu komponen utama dalam sistem rantai pasok yang berperan penting dalam segi mutu produk yang dihasilkan dan dituntut dapat menciptakan keunggulan daya saing. PT PQR merupakan perusahaan BUMN yang bergerak di bidang industri manufaktur pembuatan produk alat berat dan persenjataapian komersial di Indonesia diantaranya alat berat excavator. Penelitian ini bertujuan untuk merancang simulasi sistem dinamis dalam mitigasi risiko pengadaaan alat excavator dengan metode FMEA (Failure Mode Effect Analysis) dan Fuzzy AHP (Analytical Hierarchy Process). FMEA digunakan dalam mengidentifikasi dan menilai risiko, sedangkan Fuzzy AHP digunakan untuk menentukan prioritas risiko yang akan dimitigasi. Rancangan mitigasi risiko diusulkan dalam pengadaan bahan baku pembuatan alat excavator dengan simulasi sistem dinamis. Hasil identifikasi didapat 12 kejadian risiko yang teridentifikasi yaitu adanya perubahan Purchase Requisition (PR) yang dibuat oleh user, dokumen kelengkapan PR yang dikirimkan oleh user tidak lengkap, sumber penyedia terbatas, kurang jelasnya user pada saat penjelasan (Aanwijzing), penggunaan e–procurement belum dilaksanakan, tidak tercapainya kesepakatan harga, kecurangan oleh oknum tertentu, pemutusan kontrak secara sepihak, material terlambat datang dari penyedia, material yang datang tidak sesuai spesifikasi, kebakaran gudang, dan kebutuhan material tidak terpenuhi. Risiko yang diprioritaskan dengan nilai Weighted Risk Priority Number (WRPN) tertinggi sebesar 6,124 yaitu kejadian risiko material bahan baku terlambat datang. Rancangan mitigasi risiko yang diusulkan adalah memperbaiki koordinasi antara perusahaan dengan supplier dalam pengadaan material bahan baku. Hasil simulasi dengan sistem dinamis diperoleh skenario terbaik yang diusulkan adalah pengadaan persediaan bahan baku sebanyak 50 pcs per bulannya dengan lead time 1 bulan.
PERANCANGAN GILLNET HAULER BERTENAGA PENGGERAK HYBRID UNTUK KAPAL 5-10 GT Agri Suwandi; Dimas Agung Budiyawan
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume V Nomor 1, April 2019
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v0i0.5177

Abstract

Indonesia memiliki 17.504 pulau dengan tiga perempat wilayahnya adalah laut (5,9 juta km2) terdiri atas 3,2 juta km2 perairan teritorial dan 2,7 km2 perairan Zona Ekonomi Ekslusif, dengan panjang garis pantai 95.161 km. Luas wilayah perairan Indonesia tersebut telah diakui oleh UNCLOS (United Nation Convention of The Sea), hal tersebut mejadikan Indonesia kaya akan hasil laut yang dapat di manfaatkan untuk kesejahteraan masyarakat. Permasalahan yang ada ialah alat bantu tangkap ikan pada saat ini masih banyak yang menggunakan bahan bakar fosil untuk menggerakkan alat bantu tangkap ikan sehingga konsumsi bahan bakar pada kapal nelayan tinggi. Untuk dapat mengatasi hal tersebut maka dilakukan penelitian tentang perancangan gillnet hauler bertenaga penggerak hybrid. Metode perancangan yang digunakan adalah metode French. Berdasarkan hasil perancangan, nilai varian 1 adalah 3,39, varian 2 adalah 3,83 dan varian 3 adalah 3,91. Varian 3, memiliki nilai tertinggi, sehingga menjadi konsep terpilih. analisis statik, didapat bahwa nilai aman von misses stress material rangka sebesar 206,8 MPa, dengan pembebanan yang diberikan sebesar 305 kg didapat nilai von misses stress maksimal sebesar 4,723 MPa, maka dapat disimpulkan desain aman untuk diaplikasikan.
ANALISIS KEPRESISISAN LOBANG BOR PADA PEMESINAN MAGNESIUM AZ31 MENGGUNAKAN METODE TAGUCHI Gusri Akhyar Ibrahim; Yanuar Burhanuddin; Didiek Embrijakto
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume V Nomor 1, April 2019
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v0i0.5116

Abstract

Magnesium merupakan salah satu material bobot ringan yang sangat penting, terutama di bidang otomotif, dan biomedik. Aplikasi material magnesium dan paduannya di bidang material biomedik didasarkan pada sifat magnesium yang sangat mirip dengan sifat tulang manusia dan memiliki biocompatibility yang baik serta luluh di dalam tubuh. Aplikasi material magnesium juga banyak dikembangkan dengan cara ditanam (implan). Material paduan magnesium memiliki beberapa kelebihan secara kimia dan fisika, namun  dalam proses pemesinan paduan magnesium dikenal sebagai material jenis logam yang mudah terbakar, terutama pada saat proses pemesinan dengan kecepatan tinggi. Dalam penelitian ini, sudut mata pahat (point angle), pelumas dan parameter pengeboran dianalisa untuk mengetahui pengaruhnya terhadap nilai kekasaran permukaan, kebulatan dan ketegaklurusan. Pada penelitian ini disain yang digunakan adalah Metode Taguchi L18 yang terdiri dari 3 faktor 3 level dan 1 faktor 2 level. Hasil penelitian menunjukkan bahwa kekasaran permukaan dipengaruhi oleh adanya kontribusi dari sudut sudut mata pahat18,9% dan lubrikan 14,5%. dimana sudut mata pahat adalah 650 dengan lubrikan minyak sintetis.  Kebulatan dipengaruhi oleh sudut mata pahat 450 dari proses pengeboran, terutama jika terjadi interaksi pada kadar pemakanan 0,2 mm/rev dan lubrikan sintetis. Keakuratan sisi potong/cutting edge berakibat pada gaya tangensial sehingga berpengaruh pada kestabilan putaran dan kebulatan hasil pengeboran. Nilai ketegaklurusan magnesium AZ31 dalam proses pengeboran sangat dipengaruhi pula oleh parameter pemotongan kadar pemakanan yang menghasilkan signifikansi P = 0,044 , sedangkan nilai signifikansi yang paling tinggi adalah interaksi antara kadar pemakanan 0,1 mm/rev dengan lubrikan sintetis  pada P = 0,041.
Potensi Pembangkit Listrik Tenaga Mikrohidro di Sungai Ciliman Kabupaten Pandeglang Wahyuni Martiningsih; Herudin Herudin; Achmad Bahtiar Rifa’i
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume V Nomor 1, April 2019
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v0i0.5841

Abstract

Sumber energi untuk pembangkit listrik yang berasal dari fosil semakin menipis membuat manusia harus mencari sumber energi alternatif. Salah satu sumber energi listrik alternatif tersebut adalah air. Pembangkit listrik yang menggunakan air sebagai sumber utamanya dan menghasilkan energi di bawah 1 MW disebut PLTMH. Dengan besar debit rata-rata mencapai 9,18 m3/s dan head yang terukur mencapai 4,9 m. Sungai Ciliman di Kabupaten Pandeglang merupakan salah satu sungai yang mempunyai potensi energi yang cukup besar. Menggunakan turbin jenis propeler, potensi awal yang dapat dihitung mencapai 357 kW. Hasil simulasi menggunakan software Turbnpro, total produksi energi pertahun yang dihasilkan adalah sebesar 2679,64 MWH.
Perilaku Ketahanan Korosi Komposit Coating Poliuretan/Silika/ Karbon Pada Baja Karbon Rendah Bambang Soegijono; Ferry Budhi Susetyo; Hamdan Akbar Notonegoro
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume V Nomor 1, April 2019
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v0i0.4775

Abstract

Salah satu problematika kendaraan bermotor saat ini adalah korosi. Umumnya cat pelindung akan cepat rusak karena disebabkan kondisi operasional kendaraan pada lingkungan yang tidak menentu. Komposit coating poliuretan dengan variasi silika/karbon disiapakan, kemudian diaplikasikan pada material baja karbon rendah dengan spray gun. Pada lapisan yang terbentuk di lakukan analisis Fourier Trasform Infra Red (FTIR), Thermogravimetry (TGA), Differential Scanning Calorimetry (DSC), Mikroskop Optik dan uji salt spray. Hasil FTIR, TGA, pengamatan optik dan uji salt spray menunjukkan semakin tinggi kadar karbon/silika maka akan semakin tahan terhadap korosi.
THE APPLICATION OF VIBRATION SYSTEM on DRYER MACHINE to DRY RDF AND AGRICULTURAL PRODUCTS BY USING GREEN INCINERATOR La Ode Mohammad Firman; Dwi R; Budhi M.S.
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume V Nomor 1, April 2019
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v0i0.5445

Abstract

Increasing heat and vapor transfer between air and product to be dried is an important issue in drying of Refuse Derived Fuel (RDF) and agricultural products.  Generally, manual mixing is used in order to increase the contact area between air and product to be dried. The applications of vibration system on dryer machine can be used to dry RDF and agricultural products. Even if the use of dryer machines has been widely used to dry RDF and agricultural products with avoiding the heat loss needs to be verified. The observations shown that the using of vibration system for moving RDF and agricultural products were on the shelf could not be moved optimally. The previous study found that the spring load on dryer machine was too large and most of the surface of RDF and agricultural products were on the shelf could not get hot air flow. That’s why the spring used as pedestal of shelves would be broken fast and on a specific moment RDF and agricultural products must be taken out of the drying chamber to be manually moved. To solve the problems and to develop the results of previous study, then it needs to do the study about analysis, simulation and experimental of vibration. In this study, vibration was analyzed to having an insight on suitable condition of the dryer machine for use in drying RDF and agricultural products.  Beside that the study only uses an unbalance mass and it does not use a piston engine, so spring load would be smaller. The objectives of the study is to perform analysis, simulation and experimental of vibration in order that the RDF and agricultural products are on the each shelf can be dried fast and moved optimally. The study use observation, literature study, analysis, simulation and experimental methods and cashew nuts as the material tested on the each shelf. The study results show that the condition of vibration approached resonance cause cashew nuts placed on the each shelf could be moved optimally, therefore the surface of RDF and agricultural products were on the shelf could get hot air flow. The final moisture content of vibrated samples was lower than the samples without vibration

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