Garuda - Garba Rujukan Digital

Nofriyandi R

Politeknik Negeri Padang

Author-ID : 4043524

Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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1

Desain Sambungan Baut Rangka Atap Baja Ringan Bentang Panjang Tipe Parallel Chord Ridho Aidil Fitrah; Nofriyandi R
Rang Teknik Journal Vol 3, No 1 (2020): Vol. 3 No. 1 Januari 2020
Publisher : Fakultas Teknik Universitas Muhammadiyah Sumatera Barat

Peningkatan konstruksi dengan menggunakan baja ringan sangat signifikan pada saat ini, salah satunya pada konstruksi rangka atap yang digunakan untuk bangunan-bangunan sederhana. Keunggulan material baja ringan dalam efisiensi waktu dan biaya menjadi alasan konstruksi baja ringan sangat diminati. Namun, jumlah konstruksi yang menggunakan baja ringan masih terbatas untuk struktur bangunan sederhana sedangkan propertis material yang tinggi hingga permasalahan tekuk yang dapat diatasi dengan berbagai metode berdasarkan penelitian yang telah dilakukan seharusnya dapat meningkatkan penggunaan baja ringan untuk konstruksi yang lebih besar. Penelitian ini memaparkan tentang desain rangka atap baja ringan bentang panjang tipe parallel chord menggunakan sambungan baut berdasarkan SNI 7971:2013. Analisis dan kinerja struktur rangka atap yang telah dilakukan pada penelitian sebelumnya dilanjutkan dengan mendesain sambungan baut pada bagian sambungan rangka atap baja ringan. Desain sambungan baut mengacu kepada pasal 5.3 dan dihitung berdasarkan kondisi tarik, tumpu, dan geser. Berdasarkan hasil desain didapatkan bahwa material baja ringan penampang kanal ganda tipe back to back dapat digunakan pada bentang 24 m dengan menggunakan sambungan baut diameter 10 mm. Bagian chord dan web di setiap sambungan dihubungkan melalui pelat buhul tebal 2 mm. Jumlah sambungan baut serta susunannya secara detail digambarkan pada penelitian ini.

Rancang Bangun Generator HHO untuk Aplikasi pada Engine 1108 Cm3 Rino Sukma; Nofriyandi Nofriyandi; Hanif Hanif; Dian Wahyu; Andriyanto Andriyanto
METAL: Jurnal Sistem Mekanik dan Termal Vol 3, No 2 (2019)
Publisher : Department of Mechanical Engineering, Universitas Andalas

Electrolysis is a method used to describe the composition of air. electrolysis converts air bonds (H2O) into its constituent compounds flammable Hydrogen and Oksigen which help the combustion process. Water electrolytic devices are called HHO generators, HHO generators use pure water electrolysis, the results of the meeting between H2 and O2 will be used as alternative fuels in meeting renewable energy needs. This research uses a HHO generator. Testing the performance of the HHO generator is done experimentally on a laboratory scale. The first stage is making a dry type HHO generator using SS316L plate. The size of the plate is 70 mm x 70 mm, the center of the plate is punched Ø 12 mm, the top and the bottom of the plate are perforated Ø 10 mm. The HHO generator consists of 5 cells and 4 neutral plates for each cell by agreeing 5, 7 and 9 grams of KOH for 1 liter of distilled water. The results of the production of HHO gas produces a large amount of H2 and O2 which flows in units of minutes at a volume of 500 ml. HHO gas production parameters will depend on current, power and efficiency will increase from each of the above variables. Measurements use special measurement tools to distinguish which are quite significant

Improve TAT Refurbishment Process Excavator 20 Tons in Heavy Equiment Workshop Refnal Marzuki; Rino Sukma; Nofriyandi R; Rusmardi Rusmardi
METAL: Jurnal Sistem Mekanik dan Termal Vol 6, No 2 (2022): Jurnal Sistem Mekanik dan Termal (METAL)
Publisher : Department of Mechanical Engineering, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/metal.6.2.107-116.2022

This study discusses the turnaround time (TAT) process in the 20 Tons Excavator refurbishment process carried out by a heavy equipment repair shop in Palembang City. TAT is the time range for the completion of the work, starting from when the tool arrives at the workshop until the job is completed. In this study, the employer is the owner of the heavy equipment, and the work recipient is the workshop where the heavy equipment is carried out. Based on the workshop records, during the 20 Tons TAT Excavator's refurbishment process, the best time was achieved was 56 working days. At the same time, the entrepreneur felt that 56 days was too long and the entrepreneur asked that this repair could be completed within a maximum of 30 working days. This delay causes huge losses for entrepreneurs resulting in lost business opportunities. This research aims to increase the TAT for the completion of the 20 Tons Excavator refurbishment work completion time following the work completion agreement. For this reason, it is necessary to conduct a study to determine the causes of delays in repair work. In this study, the authors use the method used in this analysis: Define, Measure, Analyze, Improve and Control (DMAIC). Based on the research, it was found that three things significantly affect the delay in completing the work, namely the limited area for painting, work agreements as a result of the availability of spare parts and completion of work from third parties. In the process of reconditioning heavy equipment, namely setting up the painting area, availability of spare parts and ensuring the completion of work submitted to third parties, to achieve the fastest time for completion of work

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