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All Journal VANOS Journal of Mechanical Engineering Education Jurnal Rekayasa Material, Manufaktur & Energi Machine : Jurnal Teknik Mesin Ensiklopedia of Journal Jurnal Teknologi Dan Sistem Informasi Bisnis Jurnal MESIL (Mesin Elektro Sipil) ABDI SABHA (Jurnal Pengabdian kepada Masyarakat)
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Politeknik Negeri Medan
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Analisis Tegangan Alat Uji Bending Pipa Skala Laboratorium Menggunakan Finite Element Analysis angga bahri pratama; Islahuddin Islahuddin
Jurnal Teknologi Dan Sistem Informasi Bisnis Vol 3 No 1 (2021): Januari 2021
Publisher : Prodi Sistem Informasi Universitas Dharma Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47233/jteksis.v3i1.214

Abstract

Proses pengerolan yang banyak digunakan di industri skala kecil seperti bengkel, workshop dan lain-lain masih dilakukan secara manual. Pembuatan mesin bending pipa dengan proses ini memerlukan perencanaan yang tepat dengan cara mengetahui terlebih dahulu tegangan yang bekerja pada pipa agar tidak melebihi tegangan maksimumnya. Tegangan maksimum dalam perencanaan dan pembuatan mesin merupakan suatu dasar yang sangat penting untuk diketahui. Tujuan penelitian ini adalah untuk mendapatkan hasil simulasi tegangan yang terjadi pada alat bending pipa skala laboratorium yang mengalami pembebanan menggunakan perangkat lunak Solidworks 2020. Proses simulasi dilakukan dengan variasi pembebanan 700 N, 500 N dan 100 N. Proses Simulasi dilakukan dengan beberapa langkah pengerjaan, yaitu menginputkan data material baik material roller maupun material pipa yang akan dilakukan pengerolan. Data material yang diinputkan dapat berupa modulus elastisitas, poissons’ratio, yield strength dan lain-lain. Langkah selanjutnya diinputkan pemodelan roller bending dengan solidworks, setelah itu dilakukan simulasi metode elemen hingga (finite element analysis) menggunakan software Solidworks 2020. Selanjutnya dari proses simulasi telah dilakukan diperoleh tegangan bending maksimum sebesar 265,1 MPa, sedangkan static displacement maksimum sebesar 2,161 e1 mm.
PENGARUH PENGGUNAAN KAMPAS REM BERALUR TERHADAP JARAK PENGEREMAN DAN TEMPERATUR REM TROMOL PADA SEPEDA MOTOR HONDA FIT S Wagino Wagino; Angga Bahri Pratama; Donny Fernandez
VANOS Journal of Mechanical Engineering Education Vol 1, No 2 (2016)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (749.972 KB) | DOI: 10.30870/vanos.v1i2.1020

Abstract

Kampas rem tromol biasanya tidak memiliki alur. Fungsi alur adalah sebagai aliran udara dan tempat terbuangnya debu hasil pergesekan kampas rem dengan tromol. Pengujian dilakukan tiga kali percobaan kecepatan 40 km/jam, 50 km/jam, dan 60 km/jam pada beban penekanan tuas dan pedal rem 4 kg dan 5 kg. Teknik analisis data menggunakan rumus T test pada taraf signifikan 5%. Setelah dilakukan uji t, kampas rem alur berlawanan menunjukkan pengaruh besar terhadap jarak pengereman yaitu pada beban 5 kg dengan hasil (T hitung 10.211 > T tabel 4.303) pada taraf signifikan 5%. Kampas rem alur searah putaran roda terhadap temperatur rem tromol roda depan pada beban 4 kg dengan hasil (T hitung 16.385 > T tabel 4.303) pada taraf signifikan 5%. Temperatur rem tromol roda belakang, kampas rem alur searah putaran roda pada beban 5 kg menunjukkan hasil yang paling signifikan dimana (T hitung 13.942 > T tabel 4.303) dengan taraf signifikan 5%.
PERILAKU KOROSI Ti-6Al-4V ELI DALAM LARUTAN HANK’S UNTUK APLIKASI IMPLAN Sanny Ardhy; Angga Bahri Pratama
Ensiklopedia of Journal Vol 4, No 2 (2022): Vol 4 No. 2 Edisi 1 Januari 2022
Publisher : Lembaga Penelitian dan Penerbitan Hasil Penelitian Ensiklopedia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (264.714 KB) | DOI: 10.33559/eoj.v4i2.1026

Abstract

Titanium dan paduannya lebih banyak dipilih untuk pemasangan implan ortopedi karena mempunyai sifat tahan korosi dan sifat mekanik yang jauh lebih baik dibanding baja tahan karat (stainless steel). Namun demikian, penggunaan titanium dan paduannya masih memiliki kekurangan. Salah satunya, ketahanan korosi titanium dapat berkurang di lingkungan asam (pH asam). Penelitian ini bermanfaat bagi dokter ortopedi dalam memilih bahan titanium yang lebih tahan korosi untuk aplikasi ortopedi. Material Ti-6Al-4V ELI (Extra Low Intertitial) dengan diameter 1,2 cm dan ketebalan 2,5 mm dilapisi hidroksiapatit komersil, kemudian diuji rendam (immersion test) dalam larutan Hanks (pH 6,0). Pengujian dilakukan dalam empat variasi waktu (t); 1, 2, 3 dan 4 minggu. Laju korosi dihitung dengan metode pengurangan berat (weight loss). Untuk material yang dilapisi HA, tidak ditemukannya indikasi terjadinya korosi, sedangkan material yang tidak dilapisi banyak ditemukan indikasi terjadinya korosi. Laju korosi meningkat seiring pertambahan masa rendam selama 1, 2, 3 dan 4 minggu. Ini dapat dilihat dari pengurangan berat pada sampel uji, terjadi korosi merata yang terdistribusi secara merata di seluruh bagian permukaan spesimen uji. Korosi merata ini juga disebabkan adanya unsur Carbon (C) yang bersenyawa dengan oksigen (O2) menjadi karbondioksida (CO2). CO2 ini larut dalam SBF, membentuk asam karbonat (H2CO2) yang meningkatkan korosifitas.
RANCANG BANGUN MESIN PEMOTONG PIPA DENGAN LAS OXY ACETYLENE Jeri Ariksa; Yudi Setiawan; Kadriadi Kadriadi; Amiruddin Amiruddin; Angga Bahri Pratama
Machine : Jurnal Teknik Mesin Vol 9 No 1 (2023): Machine : Jurnal Teknik Mesin
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jm.v9i1.3914

Abstract

Metal cutting is the stage of processing profile raw materials and steel plates according to the cut marks that have been set in the marking process. One of the metal cutting techniques is to use oxy acetylene welding where the cutting occurs due to the reaction of oxygen and steel. Oxy acetylene welding is a manual cutting and welding process, in which the surfaces to be joined are heated until melted by the flame of acetylene gas, namely burning C₂H₂ with O₂ with filler metal or without filler metal where the joining process is without pressure. Besides for welding purposes (connection), oxy acetylene welding can also be used as preheating, brazing, cutting and hard facing. In the process of cutting iron pipes using oxy acetylene welding manually, the problem that is often found is the results of uneven and not straight cuts. This causes a leveling process to be needed on the edges that are cut so that they are flat and straight. In this research, a pipe cutting machine with oxy acetylene welding has been made which aims to produce straight, smooth, and even pipe cutting. The pipe cutting machine that has been made can produce flat, smooth, and straight iron pipe cuts on iron pipes with a diameter of 4.5 inches, 3.5 inches and 3 inches with a cutting time of 32 seconds, a motor wave rotation speed of 5.8 Hz, and a cut tolerance of ± 3 mm.
RANCANG BANGUN ALAT PENGERING BAJU MENGGUNAKAN UDARA PANAS Kadriadi Kadriadi; Kadex Widhy Wirakusuma; Angga Bahri Pratama; Jeri Ariksa; Welly Yandi
Machine : Jurnal Teknik Mesin Vol 9 No 1 (2023): Machine : Jurnal Teknik Mesin
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jm.v9i1.3950

Abstract

Drying is a process of transferring heat and water vapor simultaneously which requires heat energy to evaporate the water content. This heat energy can usually be obtained from sunlight. However, during the rainy season, this condition inhibits the drying process that utilizes sunlight, so the drying process takes a long time. Therefore we need a tool that can dry clothes without depending on the heat source from the sun's rays. The clothes dryer is a tool used to dry clothes with artificial heat energy, one of the artificial heat producers is a heating element or what is often called a heater. The artificial heating element used in this research is Electric Heater. This Electric Heater is equipped with a fan that can produce an indoor temperature of up to ± 52.3º C so that the heat generated by the Electric Heater can convert the water contained in the clothes into water vapor which will then be released into the environment with the help of a fan. Based on the results of calculations and testing, the ability of this tool is able to evaporate an average mass of water of 535.8 grams/hour and this machine reaches its optimum point for the number of drying clothes that can be dried as many as 6 clothes.
Pengaruh Temperatur terhadap Kekuatan Impak pada Material Besi Nako 10 mm Saragi J F HT; Pratama A B; Boangmanalu E P D; Al Qadry; Sinaga F T H
Jurnal MESIL (Mesin Elektro Sipil) Vol. 4 No. 1 (2023): Jurnal MESIL (Mesin Elektro Sipil)
Publisher : Cered Indonesia Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53695/jm.v4i1.886

Abstract

Each material has a different type of toughness, such as the type of 10 mm nako iron material. In use, the material can be damaged. One of the factors that can cause damage is temperature. To find out how the effect of temperature on the material, one of the material tests was carried out, namely impact testing with the charpy method. This impact test is carried out on materials that have been given different temperature variations. There are 6 test specimens used at different temperatures. As a result, at the highest temperature, namely at 31 oC, the absorbed energy is 180.84 J with an impact price of 180.84 J/cm2 and at a low temperature, namely at 4 oC, the absorbed energy is 256.8 J with an impact price of 256 .8 J/cm2.
Pelatihan dan Pendampingan Teknik Pengelasan sebagai Upaya Peningkatan Kemampuan Praktik Siswa SMK Samudera Indonesia Medan Jandri Fan HT Saragi; Eka Putra Dairi Boangmanalu; Angga Bahri Pratama; Al Qadry Al Qadry; Franklin Taruyun Hudeardo Sinaga
ABDI SABHA (Jurnal Pengabdian kepada Masyarakat) Vol. 4 No. 2 (2023): Juni
Publisher : CERED Indonesia Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53695/jas.v4i2.887

Abstract

The purpose of this PkM is to provide training and assistance regarding basic welding techniques that are useful for increasing student competence in welding. This training and mentoring in welding techniques serves as a provision for students to enter the world of work and entrepreneurship for SMK graduates as well as assisting the productive process of SMK students who lack funds and practicum facilities to improve their competence in the field of welding. The method used to solve the problems that occur is to use the survey method at SMK to obtain PkM data as needed, formulate training materials, schedule time-related training implementations, arrange instructors who will provide training, make activity evaluation designs, carry out training and mentoring activities Welding techniques were attended by students of SMK Samudra Indonesia, welding teachers, students and lecturers of Mechanical Engineering at the Medan State Polytechnic. The results of the PkM implementation are as follows: Welding skills that can equip SMK students to enter the world of work are being able to operate a welding machine properly and being able to connect plates using welding. The responses from SMK students who took part in the training and assistance from the Medan State Polytechnic Mechanical Engineering Study Program were as follows: they were happy because they had acquired welding skills that they had not mastered to their full potential and the teachers hoped that next year they could continue with other programs.
Analisis Energi Pada Alat Desalinasi Tenaga Surya Jandri Fan HT Saragi; Eka Putra Dairi Boangmanalu; Angga Bahri Pratama; Franklin Taruyun Hudeardo Sinaga; Al Qadry; Wawan Septiawan Damanik
Rekayasa Material, Manufaktur dan Energi Vol 6, No 2: September 2023
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v6i2.15169

Abstract

In recent times, many studies have been carried out on desalination systems in areas that have difficulty in obtaining clean water sources. Desalination is a method used to distill salt water or brackish water into clean water using solar power as its energy source. This desalination process is a practical alternative that can be used to offer renewable energy sources that are used to produce clean water. To perform energy analysis, the first law of thermodynamics is used as a basis. This study aims to obtain the results of the amount of energy obtained from the solar desalination system and to determine the factors that greatly affect the amount of energy obtained from the system for evaporating water. The method used in this research is an experiment by testing a solar desalination device for eight days. The results show that the highest thermal energy produced is 8.98 kWh and the lowest is 1.56 kWh, and the factors that influence the amount of thermal energy are the heat transfer coefficient and the amount of distilled water produced by the system.
Co-Authors Al Qadry Al Qadry Amiruddin Amiruddin Boangmanalu E P D Donny Fernandez Eka Putra Dairi Boangmanalu Eka Putra Dairi Boangmanalu Franklin Taruyun Hudeardo Sinaga Islahuddin Islahuddin Jandri Fan HT Saragi Jandri Fan HT Saragi Jeri Ariksa Kadex Widhy Wirakusuma Kadriadi Kadriadi Kadriadi Kadriadi Sanny Ardhy Saragi J F HT Sinaga F T H Wagino Wawan Septiawan Damanik Welly Yandi Yudi Setiawan