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All Journal Al-MIKRAJ: Jurnal studi Islam dan Humaniora Journal BEARINGS: Borneo Mechanical Engineering and Science
Ramadhan, Muhammad Hardiman Nur
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Control & Systems Engineering Economics, Econometrics & Finance Education Energy Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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Pengaruh Variasi Kecepatan Putar Spindel Dan Kedalaman Pemakanan Terhadap Kekasaran Permukaan Baja ST 37 Pada Mesin CNC Ramadhan, Muhammad Hardiman Nur
Journal BEARINGS: Borneo Mechanical Engineering and Science Vol 2, No 2 (2023)
Publisher : Universitas Borneo Tarakan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35334/bearings.v2i2.4257

Abstract

Penelitian ini bertujuan untuk megetahui pengaruh putaran mesin dan kedalaman pemakanan terhadap nilai kekasaran pada mesin bubut CNC. Penelitian ini menggunakan metode experimen. Spesimen penelitian berjumlah 9 spesimen. Data dikumpulkan menggunakan dokumentasi, dan observasi langsung. Data dianalisis menggunakan statistik kuantitatif regresi ganda. Hasil pengujian hipotesis menunjukkan: (1) Terdapat pengaruh putaran mesin terhadap nilai kekasaran, hal ini dapat dilihat dari nilai signifikansi nilai t hitung sebesar 2.571 2.447 t tabel dan nilai signifikansi (sig) 0,042 0,05. Dan Terdapat pengaruh kedalaman pemakanan terhadap nilai kekasaran, hal ini dapat dilihat dari nilai t hitung sebesar 2.933 2,063 t tabel dan nilai signifikansi (sig) 0,018 0,05. Artinya terdapat pengaruh putaran mesin dan kedalaman pemakanan terhadap nilai kekasaran.
Analisis Getaran Shake Table Menggunakan Mekanisme Hidrolik Untuk Studi Ekperimental Potensi Likuifaksi Ramadhan, Muhammad Hardiman Nur; Syam, Rafiuddin; Aminy, Ahmad Yusran
Journal BEARINGS: Borneo Mechanical Engineering and Science Vol 2, No 2 (2023)
Publisher : Universitas Borneo Tarakan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35334/bearings.v2i2.4253

Abstract

Likuifaksi adalah suatu fenomena kehilangan kekuatan geser tanah pada lapisan jenuh air akibat gempa bumi, sehingga tanah mengalami keruntuhan  dan berperilaku seperti (liquid). Likuifaksi umumnya terjadi pada tanah non kohesif (glanuler) jenuh air dan menerima beban siklik berupa gempa. Dalam penelitian ini, simulasi getaran yang mengakibatkan liquifaksi menggunakan alat bantu berupa shaking table dengan mekanisme gerak hidrolik, sinyal input yang diberikan berupa sinyal sinusoidal dengan variasi tekanan oli hidrolik 0 bar, 6,25 bar, 12,5 bar, 18,75 bar, 25 bar, 31,25 bar,37,5 bar, 43,75 bar dan 50 bar. Hasil penelitian menunjukkan bahwa Semakin kecil nilai tekanan bar oli hidrolik yang diberikan maka akan semakin kecil juga nilai MR yang didapat. Ini dikarenakan daya dorong yang diberikan tekanan bar berpengaruh kegerak lengan piston hidrolik, semankin tinggi tekanan hidrolik yang diberikan maka akan semakin cepat gerak lengan piston hidrolik, dan semakin cepat gerak lengan piston hidrolik maka semakin besar juga nilai percepatan terhadap sumbu x dan sumbu y. Dan Inputan sinyal sinusoidal yang bisa digunakan untuk eksperimen potensial liquifaksi yaitu sebesar 6,25 bar, 12,5 bar, 18,75 bar, 25 bar, 31,25 bar, 37,5 bar, 43,75 bar, dan 50 bar. Dikarenakan nilai yang dihasilkan variasi tekanan oli hidrolik tersebut masuk range syarat terjadi liquifaksi yaitu sebesar 5 – 7 SK.
Pengaruh Perbedaan Ayunan Pengelasan Dengan Metode SMAW Terhadap Kekuatan Tarik Pada Baja ST 37 Strip 5 MM Ramadhan, Muhammad Hardiman Nur
AL-MIKRAJ Jurnal Studi Islam dan Humaniora (E-ISSN 2745-4584) Vol 5 No 01 (2024): Al-Mikraj, Jurnal Studi Islam dan Humaniora
Publisher : Pascasarjana Institut Agama Islam Sunan Giri Ponorogo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37680/almikraj.v5i01.5742

Abstract

The purpose of this study was to see the effect of differences in welding swing on the tensile strength of 5 mm strip iron. The number of research samples was 6 pieces divided into two groups, the first group of 3 pieces welded with zig-zag welding swing, the second group of 3 pieces welded with spiral welding swing. The tensile test object used a tensile testing machine to determine the tensile stress value of the welding swing of each test object by slowly applying a load or force until the test object broke. This research method uses quantitative with a comparative experimental approach. The results of the welding tensile stress test of each test object sample welded with zig-zag and spiral welding swing joints showed that there was a similarity in the tensile test data, namely normal distribution, and similarity in variance. Hypothesis testing was obtained from the results of the tensile stress test of SMAW welding results with zig-zag and spiral welding swings showing a Tcount value of -8.021 (dk) = n1 + n2-2 at a significance level of 0.01 or 1%, a Ttable of 4.604 was obtained. So that the magnitude of the tensile stress of SMAW welding results with zig-zag and spiral welding swings has no significant influence.
Pengaruh Perbedaan Ayunan Pengelasan Dengan Metode SMAW Terhadap Kekuatan Tarik Pada Baja ST 37 Strip 5 MM Ramadhan, Muhammad Hardiman Nur
AL-MIKRAJ Jurnal Studi Islam dan Humaniora Vol. 5 No. 01 (2024): Al-Mikraj, Jurnal Studi Islam dan Humaniora
Publisher : Pascasarjana Institut Agama Islam Sunan Giri Ponorogo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37680/almikraj.v5i01.5742

Abstract

The purpose of this study was to see the effect of differences in welding swing on the tensile strength of 5 mm strip iron. The number of research samples was 6 pieces divided into two groups, the first group of 3 pieces welded with zig-zag welding swing, the second group of 3 pieces welded with spiral welding swing. The tensile test object used a tensile testing machine to determine the tensile stress value of the welding swing of each test object by slowly applying a load or force until the test object broke. This research method uses quantitative with a comparative experimental approach. The results of the welding tensile stress test of each test object sample welded with zig-zag and spiral welding swing joints showed that there was a similarity in the tensile test data, namely normal distribution, and similarity in variance. Hypothesis testing was obtained from the results of the tensile stress test of SMAW welding results with zig-zag and spiral welding swings showing a Tcount value of -8.021 (dk) = n1 + n2-2 at a significance level of 0.01 or 1%, a Ttable of 4.604 was obtained. So that the magnitude of the tensile stress of SMAW welding results with zig-zag and spiral welding swings has no significant influence.
Co-Authors Ahmad Yusran Aminy Rafiuddin Syam