Menu makanan bakar atau dipanggang banyak diminati di masyarakat dengan menu makanan bakar seperti ayam bakar, ikan bakar, daging panggang, bebek bakar, jagung bakar dan lain sebagainya. Akan tetapi setelah kami amati sering kali ditemukan panggangan dengan kualitas yang kurang baik, lebih cepat rusak serta rentan keropos atau berkarat dikarenakan bahan material yang kurang baik, serta rancangan dari produk panggangan yang sudah ada kurang fleksibel untuk dapat dibersihkan secara mudah dan cepat. Tujuan dalam penelitian merancang alat pemanggan menggunakan bahan material Plat Besi, dan ada bagian part atau komponen yang menggunakan bahan material Stainless Steel yang tidak mudah keropos atau berkarat serta tidak mudah rusak. Serta dilengkapi Mesin Pemantik untuk suplai bahan bakar gas untuk mempermudah dalam hal pengoperasiannya. Alat ini dibuat dengan tujuan untuk memberikan Tambahan Inovasi dengan mendesain serta merancang dan membuat alat panggangan bakaran dengan kualitas bahan material yang lebih baik dengan ukuran yang fleksibel. Dalam rancang bangun alat pemanggang berbahan bakar gas ini, diharapkan agar dapat menjadi salah satu pilihan atau solusi produk panggangan nantinya bagi masyarakat atau pengguna alat tersebut untuk digunakan dalam memanggang
{"title":"Rancang Bangun Alat Pemanggang Makanan Berbahan Bakar Gas Elpiji Portabel","authors":"Aji Setiawan, Wilarso Wilarso Arso, Asep Saepudin, Asep Dharmanto, Hilman Sholih, Aswin Domodite","doi":"10.31289/jmemme.v7i2.9283","DOIUrl":"https://doi.org/10.31289/jmemme.v7i2.9283","url":null,"abstract":"Menu makanan bakar atau dipanggang banyak diminati di masyarakat dengan menu makanan bakar seperti ayam bakar, ikan bakar, daging panggang, bebek bakar, jagung bakar dan lain sebagainya. Akan tetapi setelah kami amati sering kali ditemukan panggangan dengan kualitas yang kurang baik, lebih cepat rusak serta rentan keropos atau berkarat dikarenakan bahan material yang kurang baik, serta rancangan dari produk panggangan yang sudah ada kurang fleksibel untuk dapat dibersihkan secara mudah dan cepat. Tujuan dalam penelitian merancang alat pemanggan menggunakan bahan material Plat Besi, dan ada bagian part atau komponen yang menggunakan bahan material Stainless Steel yang tidak mudah keropos atau berkarat serta tidak mudah rusak. Serta dilengkapi Mesin Pemantik untuk suplai bahan bakar gas untuk mempermudah dalam hal pengoperasiannya. Alat ini dibuat dengan tujuan untuk memberikan Tambahan Inovasi dengan mendesain serta merancang dan membuat alat panggangan bakaran dengan kualitas bahan material yang lebih baik dengan ukuran yang fleksibel. Dalam rancang bangun alat pemanggang berbahan bakar gas ini, diharapkan agar dapat menjadi salah satu pilihan atau solusi produk panggangan nantinya bagi masyarakat atau pengguna alat tersebut untuk digunakan dalam memanggang","PeriodicalId":102197,"journal":{"name":"JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127433699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-14DOI: 10.31289/jmemme.v7i2.7867
Weriono Weriono, Syafril Syafar, Rinaldi, Adi Isra
Eksplorasi gas dan minyak bumi perlu dibuat sumur-sumur dengan sistim pengeboran, dikarenakan gas alam dan minyak mentah terletak jauh di dalam perut bumi. Proses pengeboran terlebih dahulu dilakukan proses eksplorasi dan eksploitasi. Untuk mengangkat minyak yang masih tertinggal dibutuhkan mekanisme pengangkatan yaitu artificial lift. Adapun dalam penelitian ini untuk dapat melihat mekanisme kerja pompa angguk pengaruh counterweight. Pompa ini memiliki mekanisme yang sederhana yaitu dengan adanya gerakan turun-naik dari plunger untuk menghisap fluida yang berada di bawah permukaan ke permukaan. Adapun tujuan penelitian ini adalah melihat hubungan antara beban pada penggerak utama pompa angguk dengan torsi pada kotak roda gigi serta momen pada polished rod. Pompa angguk yang digunakan adalah C-114D-119-86 di sumur 7Q13B dengan penambahan penyeimbang (counterweight) material ASTM A 48. Berat counterweight berdasarkan desain adalah 1,050 kg (3CRO) atau 2313.75 lb dan 886 kg (5 ARO) atau 1957,5 lb. Jumlah counter weight terpasang adalah empat buah (2 pcs 3CRO dan 2 Pcs 5AR. Torsi maximumnya di 114.000 lb.in. Langkah upstroke terjadi pada nilai momen positif yaitu pada sudut poros engkol kotak roda gigi 0 hingga 180o, sedangkan langkah downstroke terjadi pada nilai momen counterweight negatif yaitu pada sudut poros engkol kotak roda gigi besar dari 180 hingga 360o maka berat counterweight mempengaruhi momen terhadap crank shaft.
{"title":"Pengaruh Counterweight Pada Sistem Pompa Angguk","authors":"Weriono Weriono, Syafril Syafar, Rinaldi, Adi Isra","doi":"10.31289/jmemme.v7i2.7867","DOIUrl":"https://doi.org/10.31289/jmemme.v7i2.7867","url":null,"abstract":"Eksplorasi gas dan minyak bumi perlu dibuat sumur-sumur dengan sistim pengeboran, dikarenakan gas alam dan minyak mentah terletak jauh di dalam perut bumi. Proses pengeboran terlebih dahulu dilakukan proses eksplorasi dan eksploitasi. Untuk mengangkat minyak yang masih tertinggal dibutuhkan mekanisme pengangkatan yaitu artificial lift. Adapun dalam penelitian ini untuk dapat melihat mekanisme kerja pompa angguk pengaruh counterweight. Pompa ini memiliki mekanisme yang sederhana yaitu dengan adanya gerakan turun-naik dari plunger untuk menghisap fluida yang berada di bawah permukaan ke permukaan. Adapun tujuan penelitian ini adalah melihat hubungan antara beban pada penggerak utama pompa angguk dengan torsi pada kotak roda gigi serta momen pada polished rod. Pompa angguk yang digunakan adalah C-114D-119-86 di sumur 7Q13B dengan penambahan penyeimbang (counterweight) material ASTM A 48. Berat counterweight berdasarkan desain adalah 1,050 kg (3CRO) atau 2313.75 lb dan 886 kg (5 ARO) atau 1957,5 lb. Jumlah counter weight terpasang adalah empat buah (2 pcs 3CRO dan 2 Pcs 5AR. Torsi maximumnya di 114.000 lb.in. Langkah upstroke terjadi pada nilai momen positif yaitu pada sudut poros engkol kotak roda gigi 0 hingga 180o, sedangkan langkah downstroke terjadi pada nilai momen counterweight negatif yaitu pada sudut poros engkol kotak roda gigi besar dari 180 hingga 360o maka berat counterweight mempengaruhi momen terhadap crank shaft.","PeriodicalId":102197,"journal":{"name":"JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130861899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-14DOI: 10.31289/jmemme.v7i2.9456
Medyawanti Pane, Andreas, Rahmad Samosir
The National Energy General Plan policy is one of the government's focuses on controlling the use of renewable energy in line with the development of the need for energy use for the community, especially in the electricity sector. Electrical energy is energy that is very important for human needs, where every human being is very dependent on electricity for their daily needs. Currently, there is a crisis of fossil resources, so renewable energy can be developed. One renewable energy that is easy to develop is a wind turbine by utilizing the energy of the wind that blows. Indonesia has started to pay attention to increasing the efficiency of electricity generation, especially wind power. The type of turbine planned is the Darrieus type vertical axis wind turbine (VAWT) using a modified NACA Airfoil 2414 geometry with variations in wind speed. At a speed of 7,61 m/s from the test results obtained the power produced by the turbine is 20,78 watts with a voltage of 11,61 Volts and an electric current of 1,79 Amperes and at 354 rpm generator rotation. from the results obtained, the higher the wind speed, the higher the rotation produced by the turbine.
{"title":"Perancangan Turbin Angin Vertikal Modifikasi Darrieus Menggunakan Geometri Airfoil Naca 2414","authors":"Medyawanti Pane, Andreas, Rahmad Samosir","doi":"10.31289/jmemme.v7i2.9456","DOIUrl":"https://doi.org/10.31289/jmemme.v7i2.9456","url":null,"abstract":"The National Energy General Plan policy is one of the government's focuses on controlling the use of renewable energy in line with the development of the need for energy use for the community, especially in the electricity sector. Electrical energy is energy that is very important for human needs, where every human being is very dependent on electricity for their daily needs. Currently, there is a crisis of fossil resources, so renewable energy can be developed. One renewable energy that is easy to develop is a wind turbine by utilizing the energy of the wind that blows. Indonesia has started to pay attention to increasing the efficiency of electricity generation, especially wind power. The type of turbine planned is the Darrieus type vertical axis wind turbine (VAWT) using a modified NACA Airfoil 2414 geometry with variations in wind speed. At a speed of 7,61 m/s from the test results obtained the power produced by the turbine is 20,78 watts with a voltage of 11,61 Volts and an electric current of 1,79 Amperes and at 354 rpm generator rotation. from the results obtained, the higher the wind speed, the higher the rotation produced by the turbine.","PeriodicalId":102197,"journal":{"name":"JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129588637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-13DOI: 10.31289/jmemme.v7i2.6193
Recsi Febian Adiansyah, Derlini, D. A. Ritonga, Yopan Rahmad Aldori, P. Lestari, Fider Lumbanbatu, Etanto Heiliano Wijayanto, Muhammad Idris
PLTU PT. Socimas saat ini menggunakan air heater tipe tubular untuk mendukung dan meningkatkan kan produktivitas dari boiler. Penggunaan air heater ini menimbulkan permasalahan baru pada penggunaan air preheater tipe tubular dengan terjadinya kebocoran pada pipa di dalam air heater. Kerusakan ini terjadiakibat dari terjadinya gesekan flue gas yang terjadi di secara terus menerus kerusakan ini menyebabkan kurang maksimalnya penggunaan air heaterterhadap boiler . kerusakan ini Menyebabkan perusahaan mengganti tebal pipa air heater, dengan adanya permasalahan ini, penulis mencoba untuk mengetahui efisiensi air heatersetelah terjadinya penggantian pipa dengan diameter awal 35mm dengan tebal 2,5mm didapatkan laju perpindahan panas konveksi aliran dalam sebesar 62547,7 J/s, konduksi sebesar 127530,49 J/s, konveksi aliran luar sebesar 1242750,13 J/s. Setelah terjadi perubahan diameter 37mm dengan tebal 3,5mm didapatkan laju perpindahan panas konveksi aliran dalam sebesar 69142,4 J/s, konduksi sebesar 113825,46 J/s, konveksi aliran luar sebesar 1711397,46 J/s. Setelah laju perpindahan panas diketahui maka penulis membandingkan efisiensi air heater pra penggantian sebesar 52,07% dengan air heater pasca penggantian sebesar 67,66% maka didapatkan selisih penghematan bahan bakar batubara sebesar 67,347 kg/ hari.
{"title":"Pengaruh Penambahan Ukuran Tebal Pipa Air Heater Terhadap Efisiensi Termal Serta Konsumsi Bahan Bakar Pada Boiler PT. Socimas Kapasitas 50T/H","authors":"Recsi Febian Adiansyah, Derlini, D. A. Ritonga, Yopan Rahmad Aldori, P. Lestari, Fider Lumbanbatu, Etanto Heiliano Wijayanto, Muhammad Idris","doi":"10.31289/jmemme.v7i2.6193","DOIUrl":"https://doi.org/10.31289/jmemme.v7i2.6193","url":null,"abstract":"PLTU PT. Socimas saat ini menggunakan air heater tipe tubular untuk mendukung dan meningkatkan kan produktivitas dari boiler. Penggunaan air heater ini menimbulkan permasalahan baru pada penggunaan air preheater tipe tubular dengan terjadinya kebocoran pada pipa di dalam air heater. Kerusakan ini terjadiakibat dari terjadinya gesekan flue gas yang terjadi di secara terus menerus kerusakan ini menyebabkan kurang maksimalnya penggunaan air heaterterhadap boiler . kerusakan ini Menyebabkan perusahaan mengganti tebal pipa air heater, dengan adanya permasalahan ini, penulis mencoba untuk mengetahui efisiensi air heatersetelah terjadinya penggantian pipa dengan diameter awal 35mm dengan tebal 2,5mm didapatkan laju perpindahan panas konveksi aliran dalam sebesar 62547,7 J/s, konduksi sebesar 127530,49 J/s, konveksi aliran luar sebesar 1242750,13 J/s. Setelah terjadi perubahan diameter 37mm dengan tebal 3,5mm didapatkan laju perpindahan panas konveksi aliran dalam sebesar 69142,4 J/s, konduksi sebesar 113825,46 J/s, konveksi aliran luar sebesar 1711397,46 J/s. Setelah laju perpindahan panas diketahui maka penulis membandingkan efisiensi air heater pra penggantian sebesar 52,07% dengan air heater pasca penggantian sebesar 67,66% maka didapatkan selisih penghematan bahan bakar batubara sebesar 67,347 kg/ hari.","PeriodicalId":102197,"journal":{"name":"JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123555035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-13DOI: 10.31289/jmemme.v7i2.6189
M. Rasyid, D. A. Ritonga, Yopan Rahmad Aldori, Sukmawati, Erni Yusnita, Etanto Heiliano Wijayanto, Muhammad Idris
Pompa adalah peralatan mekanis untuk meningkatkan energi tenakan pada cairan(fluida) yang dipompa dengan mengubah energi mekanis poros penggerak menjadi energi potensial dan energi kinetis fluida. Seiring berkembangnya teknologi, pompa digunakan diberbagai bidang termasuk pemakaiannya dalam bidang indsutri. Pompa Sentrifugal merupakan salah satu jenis pompa yang mempunyai lingkup penggunaan yang sangat luas terkait dengan head dan kapasitas yang dihasilkan. Pada kesempatan ini penulis mencoba memaparkan hasil penelitian tentang unjuk kerja pompa sentrifugal bila dilakukan variasi tinggi hisap pada pompa sentrifugal akan mempengaruhi kapasitas, Head, Daya Hidraulis dan effesiensi pompa sentrifugal. Variasi tinggi hisap dimaksudkan untuk mengetahui peningkatan performance pompa yang terjadi akibat penambahan tinggi hisap pompa. Menambah tinggi hisap pompa sangat berpengaruh terhadap kapasitas aliran air yang dihasilkan, hal ini juga akan mempengaruhi kerja pompa, kecepatan spesifik, daya dan efesiensi pompa. Sehingga dapat diperoleh titik kerja tertinggi pompa sentrifugal dengan Kapasitas (Q) 0,001180 m3/s, Head (H) 6,066 m, Daya Hidraulis (Ph) 70,008 watt, Effesiensi (ɳp) 26,51 %, hal ini dapat terlaksana bila diikuti penambahan daya dari motor penggeraknya.
{"title":"Analisis Pengaruh Tinggi Hisap Pompa Sentrifugal Terhadap Kapasitas Dan Efisiensi Pompa","authors":"M. Rasyid, D. A. Ritonga, Yopan Rahmad Aldori, Sukmawati, Erni Yusnita, Etanto Heiliano Wijayanto, Muhammad Idris","doi":"10.31289/jmemme.v7i2.6189","DOIUrl":"https://doi.org/10.31289/jmemme.v7i2.6189","url":null,"abstract":"Pompa adalah peralatan mekanis untuk meningkatkan energi tenakan pada cairan(fluida) yang dipompa dengan mengubah energi mekanis poros penggerak menjadi energi potensial dan energi kinetis fluida. Seiring berkembangnya teknologi, pompa digunakan diberbagai bidang termasuk pemakaiannya dalam bidang indsutri. Pompa Sentrifugal merupakan salah satu jenis pompa yang mempunyai lingkup penggunaan yang sangat luas terkait dengan head dan kapasitas yang dihasilkan. Pada kesempatan ini penulis mencoba memaparkan hasil penelitian tentang unjuk kerja pompa sentrifugal bila dilakukan variasi tinggi hisap pada pompa sentrifugal akan mempengaruhi kapasitas, Head, Daya Hidraulis dan effesiensi pompa sentrifugal. Variasi tinggi hisap dimaksudkan untuk mengetahui peningkatan performance pompa yang terjadi akibat penambahan tinggi hisap pompa. Menambah tinggi hisap pompa sangat berpengaruh terhadap kapasitas aliran air yang dihasilkan, hal ini juga akan mempengaruhi kerja pompa, kecepatan spesifik, daya dan efesiensi pompa. Sehingga dapat diperoleh titik kerja tertinggi pompa sentrifugal dengan Kapasitas (Q) 0,001180 m3/s, Head (H) 6,066 m, Daya Hidraulis (Ph) 70,008 watt, Effesiensi (ɳp) 26,51 %, hal ini dapat terlaksana bila diikuti penambahan daya dari motor penggeraknya.","PeriodicalId":102197,"journal":{"name":"JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY","volume":"124 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116691111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-13DOI: 10.31289/jmemme.v7i2.6094
Sandi Saputra, Siswo Pranoto, Yopan Rahmad Aldori, Syurkarni Ali, Junaidi, Andri Herlambang, M. Y. R. Siahaan, Muhammad Idris
Rack grate is a component composed of rack clip and rack bone arrangement that serves as a dropping cross-section media of coal and as a media of coal burned in the boiler. As part of the main component, the rack grate can be regarded as one of the components that ensure the success of combustion in the boiler. Failure to this component will certainly interfere with the implementation of boiler operations. In addition to require the boiler to be shut down while repaired, in addition to requiring the boiler to be extinguished during repairs, the inoperability of the boiler makes the steam production process at the PLTU impossible and ultimately the electricity generation process cannot be carried out as usual. Damage to the rack grate component has a type of plastic deformation with variable loads and fluctuating heat, which means that the thermal stress in the system has reached the yield stress point. To find out the root cause of this component damage quickly and accurately, an analysis of the results of the implementation of engineering software in this case Ansys Workbench, and a comparison of actual operating data, and data design is the best choice. Lastly, by evaluating the optimum values of temperature, equivalent stress and strain, total deformation, input process parameters value can be controlled to the desired values, resulting in less stress concentration occurs, so that the damage to the workpiece can be reduced or even eliminated.
{"title":"Analisis Pengaruh Panas dan Beban terhadap Kerusakan Traveling Grate pada Boiler Di PLTU Tembilahan 2x7 MW","authors":"Sandi Saputra, Siswo Pranoto, Yopan Rahmad Aldori, Syurkarni Ali, Junaidi, Andri Herlambang, M. Y. R. Siahaan, Muhammad Idris","doi":"10.31289/jmemme.v7i2.6094","DOIUrl":"https://doi.org/10.31289/jmemme.v7i2.6094","url":null,"abstract":"Rack grate is a component composed of rack clip and rack bone arrangement that serves as a dropping cross-section media of coal and as a media of coal burned in the boiler. As part of the main component, the rack grate can be regarded as one of the components that ensure the success of combustion in the boiler. Failure to this component will certainly interfere with the implementation of boiler operations. In addition to require the boiler to be shut down while repaired, in addition to requiring the boiler to be extinguished during repairs, the inoperability of the boiler makes the steam production process at the PLTU impossible and ultimately the electricity generation process cannot be carried out as usual. Damage to the rack grate component has a type of plastic deformation with variable loads and fluctuating heat, which means that the thermal stress in the system has reached the yield stress point. To find out the root cause of this component damage quickly and accurately, an analysis of the results of the implementation of engineering software in this case Ansys Workbench, and a comparison of actual operating data, and data design is the best choice. Lastly, by evaluating the optimum values of temperature, equivalent stress and strain, total deformation, input process parameters value can be controlled to the desired values, resulting in less stress concentration occurs, so that the damage to the workpiece can be reduced or even eliminated.","PeriodicalId":102197,"journal":{"name":"JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115460316","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-13DOI: 10.31289/jmemme.v7i2.9472
Hanrevo Fauzi Haris, Budiarto
Baja VCN 150 termasuk dalam kategori baja ultra high-strength yang memiliki kekuatan sangat tinggi dan memadukan antara hardenability yang baik, keuletan, ketangguhan, dan ketahanan terhadap fatigue dan creep yang tinggi. Penulisan ini memaparkan pengaruh waktu tempering mengenai struktur kristal, kekerasan, serta kuat tarik pada baja vcn 150. Penelitian memakai metode penelitian kuantitatif yang menggunakan metode deskriptif dan studi eksperimental. Pengujian dilakukan melalui pengamatan struktur kristal memakai Difraktometer Sinar-X, uji kekerasan dan kuat tarik dengan Brinell. Hasil menunjukkan bahwa sifat mekanik dan fisik sangat dipengaruhi oleh proses quenching maupun tempering. Kekerasan material mengalami peningkatan setelah proses quenching dari 203 HB ke 393 HB menggunakan media quenching oli. Pada media pendingin air garam dapat meningkatkan kekerasan secara maksimal yaitu dari 203 HB ke 445,3 HB dan mengalami penurunan yang tidak signifikan kembali setelah melalui proses tempering. Penurunan kekerasan dari 445,3 HB ke 324 HB setelah 5 jam tempering. Penurunan ukuran kristal terjadi setelah proses tempering selama 5 jam yaitu dari 0,5766 (nm) ke 0,4725 (nm). Terjadi kenaikan nilai kerapatan diskolasi setelah proses tempering selama 5 jam yaitu 3,0679 (garis/mm²) ke 6,8527 (garis/mm²) begitu pula kenaikan regangan mikro setelah proses tempering selama 5 jam yaitu dari 0,1254 (ε) ke 0,2148 (ε).
{"title":"Pengaruh Waktu Tempering Terhadap Struktur Kristal, Kekerasan, dan Kuat Tarik Pada Baja VCN 150","authors":"Hanrevo Fauzi Haris, Budiarto","doi":"10.31289/jmemme.v7i2.9472","DOIUrl":"https://doi.org/10.31289/jmemme.v7i2.9472","url":null,"abstract":"Baja VCN 150 termasuk dalam kategori baja ultra high-strength yang memiliki kekuatan sangat tinggi dan memadukan antara hardenability yang baik, keuletan, ketangguhan, dan ketahanan terhadap fatigue dan creep yang tinggi. Penulisan ini memaparkan pengaruh waktu tempering mengenai struktur kristal, kekerasan, serta kuat tarik pada baja vcn 150. Penelitian memakai metode penelitian kuantitatif yang menggunakan metode deskriptif dan studi eksperimental. Pengujian dilakukan melalui pengamatan struktur kristal memakai Difraktometer Sinar-X, uji kekerasan dan kuat tarik dengan Brinell. Hasil menunjukkan bahwa sifat mekanik dan fisik sangat dipengaruhi oleh proses quenching maupun tempering. Kekerasan material mengalami peningkatan setelah proses quenching dari 203 HB ke 393 HB menggunakan media quenching oli. Pada media pendingin air garam dapat meningkatkan kekerasan secara maksimal yaitu dari 203 HB ke 445,3 HB dan mengalami penurunan yang tidak signifikan kembali setelah melalui proses tempering. Penurunan kekerasan dari 445,3 HB ke 324 HB setelah 5 jam tempering. Penurunan ukuran kristal terjadi setelah proses tempering selama 5 jam yaitu dari 0,5766 (nm) ke 0,4725 (nm). Terjadi kenaikan nilai kerapatan diskolasi setelah proses tempering selama 5 jam yaitu 3,0679 (garis/mm²) ke 6,8527 (garis/mm²) begitu pula kenaikan regangan mikro setelah proses tempering selama 5 jam yaitu dari 0,1254 (ε) ke 0,2148 (ε).","PeriodicalId":102197,"journal":{"name":"JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133311882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-09DOI: 10.31289/jmemme.v6i2.6707
Fider Lumbanbatu, S. Irawan, Khairuddin Tampubolon
This study aims to obtain the best design and material for horseshoes. The research method used is experimental and research target design. This research was conducted in Medan and most of the experiments were conducted at USU University Medan. The results of this research are: it is known that horse shoes will be better if they are made using polymeric foam and reinforced with glass fiber. Furthermore, it was found that other advantages of horseshoe material made of polymeric foam reinforced fiberglass when compared to low carbon mild steel A 36 material, namely: a) Light weight, so it does not burden the horse's feet. b) Flexible, so it can adjust to the horse's hooves. c) Soft, so it can reduce the risk of injury. Horseshoe made of iron, when the horse is moving, if it hits a hard surface, it can cause a reaction force that over time can damage the horse's hooves, the joints of the horse's legs and even the horse's feet, if used for a long time. d) Resistant to chemicals found in the horse's environment, for example horse urine contained in horse stables, where horse urine contains ammonia, and is mixed with other harmful substances. e) Not slippery, thus preventing the horse from slipping and reducing the risk of injury.
{"title":"Perancangan Sepatu Kuda Berbahan Dasar Polymeric Foam dan Diperkuat dengan Fiber Glass","authors":"Fider Lumbanbatu, S. Irawan, Khairuddin Tampubolon","doi":"10.31289/jmemme.v6i2.6707","DOIUrl":"https://doi.org/10.31289/jmemme.v6i2.6707","url":null,"abstract":"This study aims to obtain the best design and material for horseshoes. The research method used is experimental and research target design. This research was conducted in Medan and most of the experiments were conducted at USU University Medan. The results of this research are: it is known that horse shoes will be better if they are made using polymeric foam and reinforced with glass fiber. Furthermore, it was found that other advantages of horseshoe material made of polymeric foam reinforced fiberglass when compared to low carbon mild steel A 36 material, namely: a) Light weight, so it does not burden the horse's feet. b) Flexible, so it can adjust to the horse's hooves. c) Soft, so it can reduce the risk of injury. Horseshoe made of iron, when the horse is moving, if it hits a hard surface, it can cause a reaction force that over time can damage the horse's hooves, the joints of the horse's legs and even the horse's feet, if used for a long time. d) Resistant to chemicals found in the horse's environment, for example horse urine contained in horse stables, where horse urine contains ammonia, and is mixed with other harmful substances. e) Not slippery, thus preventing the horse from slipping and reducing the risk of injury.","PeriodicalId":102197,"journal":{"name":"JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115449971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-09DOI: 10.31289/jmemme.v6i2.7317
Elysa Nensy Irawan, Fahrur Aslami, Aldo Mahendra Putra, S. Thaowankaew, W. Namhongsa, A. Vora–ud, K. Singsoog, Tosawat Seetawan4, M. S. Muntini
The purpose of this research was to determine the performance of AZO and MCCO materials as constituents of the thin film-thermoelectric generator module. The method used for fabrication is DC Magnetron Sputtering. The electrode material used is Ag and the substrate used is SiO2 glass. The arrangement of the thin film used for the fabrication of the thermoelectric module is P-N-P-N-P-N-P-N-P-N (5 couples of p-n junctions). Based on the test results, the thickness of the thin film type N is 74.72 nm and type P is 90.34 nm. At the highest test temperature (300 oC), the AZO Seebeck coefficient value is -108 µV/K while the MCCO Seebeck coefficient value is 350 µV/K, and the AZO electrical resistivity value is 0.07 Ω.m while the MCCO electrical resistivity value is 0.36 Ω.m. The highest temperature difference given in the test of the AZO and MCCO thin film thermoelectric module is 1.538 °C and the thermoelectric module can produce a voltage of 1,842 ± 0.047 mV, a Seebeck coefficient of 4 µV/K, and an efficiency of 0.44%. Based on this research, it can be concluded that the performance of AZO and MCCO thin film-thermoelectric modules will have better performance at temperatures around 300 - 350 °C.
{"title":"Fabrication and Performance Analysis of AZO and MCCO as Thin Film-Thermoelectric Generator Materials","authors":"Elysa Nensy Irawan, Fahrur Aslami, Aldo Mahendra Putra, S. Thaowankaew, W. Namhongsa, A. Vora–ud, K. Singsoog, Tosawat Seetawan4, M. S. Muntini","doi":"10.31289/jmemme.v6i2.7317","DOIUrl":"https://doi.org/10.31289/jmemme.v6i2.7317","url":null,"abstract":"The purpose of this research was to determine the performance of AZO and MCCO materials as constituents of the thin film-thermoelectric generator module. The method used for fabrication is DC Magnetron Sputtering. The electrode material used is Ag and the substrate used is SiO2 glass. The arrangement of the thin film used for the fabrication of the thermoelectric module is P-N-P-N-P-N-P-N-P-N (5 couples of p-n junctions). Based on the test results, the thickness of the thin film type N is 74.72 nm and type P is 90.34 nm. At the highest test temperature (300 oC), the AZO Seebeck coefficient value is -108 µV/K while the MCCO Seebeck coefficient value is 350 µV/K, and the AZO electrical resistivity value is 0.07 Ω.m while the MCCO electrical resistivity value is 0.36 Ω.m. The highest temperature difference given in the test of the AZO and MCCO thin film thermoelectric module is 1.538 °C and the thermoelectric module can produce a voltage of 1,842 ± 0.047 mV, a Seebeck coefficient of 4 µV/K, and an efficiency of 0.44%. Based on this research, it can be concluded that the performance of AZO and MCCO thin film-thermoelectric modules will have better performance at temperatures around 300 - 350 °C.","PeriodicalId":102197,"journal":{"name":"JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133600614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study discusses the performance of boiler without and with insulation as a parameter that affects the performance of boiler. The purpose of this study is to compare the performance of boiler without using an insulator and with an insulator. The performance of the boiler is seen from the length of time reaches a boiling temperature at a pressure of 5 bar, the decrease in boiler temperature after reaching a pressure of 5 bar, and the duration of the boiler pressure reaching a pressure of 5 bar. The research method used was 14 liters of water and 4 kg of coconut shell. The first research was carried out without using insulation, furthermore it was continued by isolating the boiler using glasswool with the same conditions. The results obtained in boilers without and with glasswool insulation are very significant. Where the duration of boiling water is up to 41 minutes and 25 minutes, respectively. In addition, the final temperatures after 77 minutes and 118 minutes were 88.4 oC and 145 oC, respectively for boilers without and with insulators. The conclusion in this study states that the insulator greatly affects the performance of the boiler.
{"title":"Analisa Perbandingan Kinerja Boiler Tanpa dan Dengan Menggunakan Glasswoll sebagai Isolator","authors":"Safri Gunawan, Supriadi, Hendra Susilo, Fadhlah Sinurat","doi":"10.31289/jmemme.v6i2.7396","DOIUrl":"https://doi.org/10.31289/jmemme.v6i2.7396","url":null,"abstract":"This study discusses the performance of boiler without and with insulation as a parameter that affects the performance of boiler. The purpose of this study is to compare the performance of boiler without using an insulator and with an insulator. The performance of the boiler is seen from the length of time reaches a boiling temperature at a pressure of 5 bar, the decrease in boiler temperature after reaching a pressure of 5 bar, and the duration of the boiler pressure reaching a pressure of 5 bar. The research method used was 14 liters of water and 4 kg of coconut shell. The first research was carried out without using insulation, furthermore it was continued by isolating the boiler using glasswool with the same conditions. The results obtained in boilers without and with glasswool insulation are very significant. Where the duration of boiling water is up to 41 minutes and 25 minutes, respectively. In addition, the final temperatures after 77 minutes and 118 minutes were 88.4 oC and 145 oC, respectively for boilers without and with insulators. The conclusion in this study states that the insulator greatly affects the performance of the boiler.","PeriodicalId":102197,"journal":{"name":"JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131368034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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