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All Journal Prosiding Seminar Nasional Teknik Mesin Jurnal Mahasiswa Entrepreneur
Dedi Dwi Haryadi, Dedi Dwi
Jurusan Teknik Mesin, Politeknik Negeri Jakarta, Jl. Prof G E Siwabesi Kampus Baru UI Depok, 16425
Aerospace Engineering Control & Systems Engineering Economics, Econometrics & Finance Electrical & Electronics Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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Analisa Kerusakan Screw pada Mesin Extruder di PT.X Setyandi, Adam Febrian; Tjahyono, Seto; Haryadi, Dedi Dwi
Seminar Nasional Teknik Mesin 2019: Prosiding Seminar Nasional Teknik Mesin 2019
Publisher : Politeknik Negeri Jakarta

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Abstract

Screw adalah sebuah komponen utama pada mesin Extruder untuk penunjang produksi. Screw merupakan sebuah shaft panjang memiliki alur yang berfungsi sebagai penggiling dari bubuk powder yang dilelehkan didalam extruder dan mentransfer atau menyalurkan ke plate untuk dibentuk menjadi biji-biji plastik. Pada screw ini jarang terjadi kerusakan, karena jika mengalami kerusakan, proses produksi sudah pasti akan berhenti. Tetapi saat melakukan kegiatan preventive pada mesin Extruder yaitu dilakukannya overhaul, terdapat keretakan yang terjadi pada screw. Minimnya preventive maintenance pada mesin extruder dapat menyebabkan penurunan lifetime dari mesin extruder itu sendiri. Keretakan diidentifikasi dengan melakukan percobaan NDT (Non Destructive Test) liquid penetrant. Setelah diketahui adanya keretakan dilakukanlah analisa kerusakan pada screw extruder guna menelusuri penyebab keretakan yang terjadi serta pencarian solusinya. Dari hasil Root Cause Analysis (RCA) dengan metode Fishbone Diagram (diagram tulang ikan), perlunya dilakukan kegiatan preventive maintenance dan pengecekan tekanan serta temperature secara berkala. Hasil dari NDT tidak diperlukan penggantian screw pada extruder. Dengan dilakukannya kegiatan preventive maintenance dan menjaga agar tekanan serta temperature stabil, diharapkan keretakan pada screw tidak akan terjadi.
PENGARUH KEBIJAKAN PEMERINTAH SELAMA MASA PANDEMI COVID-19 TERHADAP MINAT PENUMPANG DI BANDAR UDARA INTERNASIONAL SUPADIO PONTIANAK Haryadi, Dedi Dwi; Awan, Awan
Jurnal Mahasiswa Entrepreneurship (JME) Vol 1 No 10 (2022): OKTOBER 2022
Publisher : Fakultas Ekonomi dan Bisnis

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (557.703 KB) | DOI: 10.36841/jme.v1i10.2256

Abstract

The existence of several government policies that have been mentioned above have an impact on some operational activities at Supadio International Airport becoming unstable. One of them is a decrease in passengers. This research is included in the quantitative research category because quantitative data is used to estimate the effect of Covid-19 on passenger interest at Supadio Pontiank Airport, and how much influence Covid-19 has on passenger interest at Pontianak Supadio Airport. Data collection techniques using Observation, Questionnaire and Documentation. This research method uses multiple linear regression using the T test, F test with a significance level of 5%. Based on the results of the research conducted, it was concluded that there was a significant influence of government policies on passenger interest at Pontianak Supadio Airport. The magnitude of the influence seen from the large R Square shows the large influence of the variable (X) of government policy on the variable (Y) which is 0.373 = 37.3%. This means that the magnitude of the influence of the government policy variable on passenger interest is 37.3% while the rest is in other factors. The regression equation also shows the magnitude of Y = 24.127 + 0.785X. The coefficient b is called the coefficient of regression direction and represents the average change in the Y variable for each X variable.
Co-Authors Awan, Awan Diana Meliza Stephani, Diana Meliza Setyandi, Adam Febrian Sigit Subiantoro, Sigit Tjahyono, Seto