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All Journal Rekayasa Mesin Rekayasa Sipil Turbo : Jurnal Program Studi Teknik Mesin DIKEMAS (Jurnal Pengabdian Kepada Masyarakat)
Jatmoko Awali
Jurusan Teknik Mesin Fakultas Teknik Universitas Brawijaya
Civil Engineering, Building, Construction & Architecture Mechanical Engineering Social Sciences

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ANALISA KEGAGALAN POROS DENGAN PENDEKATAN METODE ELEMEN HINGGA Awali, Jatmoko; Asroni, Asroni
TURBO [Tulisan Riset Berbasis Online] Vol 2, No 2 (2013): Desember 2013
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (705.482 KB) | DOI: 10.24127/trb.v2i2.31

Abstract

Poros bekerja dengan menerima beban berupa lentur, tarikan, tekan dan puntiran. Berdasarkan pembebanannya poros dibedakan dalam beberapa macam, diantaranya poros transmisi, gandar, poros spindel. Pada poros transmisi biasa dikenal dengan sebutan shaft. Shaft akan mengalami beban puntir berulang, beban lentur ataupun keduanya. Pada shaft daya ditransmisikan melalui pulley. didapatkan beberapa nilai diantaranya ialah, safety factor, tegangan geser maksimum, dan von mises sebelum terjadi kegagalan pada momen torsi sebesar 1600 Nm. dan Semakin tinggi momen torsi yang diberikan maka nilai safety factor yang dihasilkan semakin rendah yaitu sebesar 0,74 dimana nilai awal sebesar 1,49, hal ini menjelaskan bahwa beban torsi yang diterima akan mempengaruhi kegagalan poros tersebut.
Pengaruh Kuat Arus Pengelasan Dua Layer dengan Metode GTAW dan SMAW terhadap Kekuatan Tarik pada Plat ASTM A 36 Awali, Jatmoko; Irawan, Yudy Surya; Choiron, Moch. Agus
Rekayasa Mesin Vol 5, No 2 (2014)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (461.476 KB)

Abstract

Welding is a combining method of two materials by using thermal energy. It was divided into several groups including the classification of the liquid, press and soldering. Arc welding is the most commonly used in every time, such as welding with consumable and not consumable electrodes. Two types of arc welding have deficiency and excess, respectively; combining both types of arc welding is needed to cover each other’s excess. The method in this research was combining of welding GTAW (Gas Tungsten Arc Welding) and SMAW (Shield Metal Arc Welding) with variation in Root Pass and Cover Pass position. The current of GTAW with 100A, 130A, 160A, and SMAW with 65A, 80A, and 95A were used in this research. ASTM A 36 was used as the material. The plat thickness was 7mm and single V groove 600. Combining the welding GTAW-GTAW between 100A and 100A for the first and second layer has the highest tensile strength, and the lowest tensile strength was in combination of welding between GTAW-SMAW with 65A and 100A.Keywords: Tensile strength, GTAW, SMAW, two layers and ASTM A 36
POTENSI PEMANFAATAN KAYU GELAM DAN KAYU SENGON DALAM DUNIA KONSTRUKSI BERDASARKAN UJI KUAT LENTUR Basyaruddin, Basyaruddin; Suryaningsih, Alnovia -; Awali, Jatmoko
Rekayasa Sipil Vol 13, No 3 (2019)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2019.013.03.6

Abstract

In 2013, The Ministry of Forestry revealed that the need for wood as material for construction was always increasing. In order to find the innovations regarding timber structure, this study was conducted to discover the flexural strength of gelam and sengon based on SNI 03-3959-1995. Also, specimens which 50 mm in depth, 50 mm in height and 760 mm in length were tested using two point loading method based on ASTM D-198. This research showed that the average flexural strength of gelam is 100.13 Mpa which is greater than sengon (82.62 Mpa). Furthermore, as simple truss structure, simulation indicated that gelam and sengon are still capable in resisting moment generated from service load.
IMPLEMENTASI REPAIR GROVE BAN LAYAK PAKAI DAN PENGEMBANGAN PRODUKTIFITAS SUMBER DAYA MANUSIA UNTUK MASYARAKAT KARANG JOANG Awali, Jatmoko; Laksono, Andromeda Dwi; Ismail, Ika; Triana, Yunita; Syaifuddin, Ahmad
DIKEMAS (Jurnal Pengabdian Kepada Masyarakat) Vol 4, No 1 (2020)
Publisher : Politeknik Negeri Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32486/jd.v4i1.398

Abstract

Pendidikan adalah modal utama bagi suatu bangsa dalam upaya meningkatkan kualitas sumberdaya manusia yang dimilikinya. Sumberdaya manusia yang berkualitas akan mampu mengelola sumber daya alam dan memberi layanan secara efektif dan efisien untuk meningkatkan kesejahteraan masyarakat. Maka dari itu, titik sentral pembangunan adalah pemberdayaan sumber daya manusia termasuk tenaga kerja, baik sebagai sasaran pembangunan maupun sebagai pelaku pembangunan. Balikpapan merupakan kawasan industri yang dimana di desa Karang Joang tersebut merupakan daerah yang sedang berkembang. Namun sejauh ini, kurangnya pendidikan dan belum ada tindakan yang nyata baik dari pemerintah maupun tokoh masyarakat dan pengusaha. Akibatnya kebanyakan orderan yang diminta oleh para pengembang beralih pada sekelompok orang saja. Berdasarkan kenyataan tersebut, maka lembaga pelatihan dan pengembangan produktifitas sumber daya manusia yang berlokasi di desa Karang Joang mencoba untuk memfasilitasi kelompok produktif ini agar bisa lebih produktif dan berguna bagi upaya memperbaiki ekonomi keluarga, salah satunya adalah dengan jalan memberikan pelatihan tentang manajemen dan repair ban  layak pakai.
Analisis Variasi Arus Pengelasan Kombinasi SMAW-FCAW dengan Kampuh Double V-Groove terhadap Kekerasan dan Struktur Mikro Dissimilar Material JIS G3101-SS400 dan ASTM A36 Awali, Jatmoko; Rudiyanto, Fahmi; Thesalonicha, Somalinggi; Lubis, Muthia Putri Darsini; Tanjung, Rifqi Aulia; Triana, Yunita
Jurnal Rekayasa Mesin Vol 12, No 2 (2021)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2021.012.02.19

Abstract

This study aims to determine the effect of variations of the current with combining two welding techniques SMAW and FCAW in double v-groove against the hardness and microstructure of the dissimilar material of JIS G3101-SS400 and ASTM A36. JIS G3101 SS400 and ASTM A36 each with a thickness of 10 mm were used as the materials. The combination of SMAW welding with E7018 electrodes and FCAW with E71T-1 were used as the welding techniques. The current used in SMAW welding were 60 A, 75 A, and 90 A. While in FCAW welding the current used were 190 A, 205 A, and 220 A. Hardness and microstructure tests were carried out on each sample. The results of the study showed that the current in welding process affect the hardness value and microstructure of material. The higher the welding current, the value of hardness of the material going to decrease and vice versa. The highest hardness values in SMAW and FCAW welding are at currents of 60 A and 190 A. Then the current in the welding process also affect the microstructure produced in the weld and HAZ. The formed microstructure containing pearlite and ferrite. The higher welding current, the percentage of pearlite produced increase and the percentage of ferrite decrease.
Co-Authors Ahmad Syaifuddin Asroni Asroni Basyaruddin Basyaruddin, Basyaruddin Ismail, Ika Laksono, Andromeda Dwi Moch. Agus Choiron Muthia Putri Darsini Lubis Rudiyanto, Fahmi Suryaningsih, Alnovia - Tanjung, Rifqi Aulia Thesalonicha, Somalinggi Yudy Surya Irawan Yunita Triana, Yunita