cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Dr. Richard A.M. Napitupulu, ST. MT
Contact Email
journalmechanical@uhn.ac.id
Phone
+6281226670831
Journal Mail Official
parulian.nommensen@gmail.com
Editorial Address
Program Studi Teknik Mesin Fakultas Teknik Universitas HKBP Nommmensen Jalan Sutomo No. 4a, Medan 20234 Indonesia
Location
Kota medan,
Sumatera utara
INDONESIA
Sprocket : Journal of Mechanical Engineering
Published by Universitas HKBP Nommensen
ISSN : -     EISSN : 26858916     DOI : https://doi.org/10.36655/sproket.v1i1
Core Subject : Science, Engineering,
Automotive Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
SPROCKET Journal of Mechanical Engineering (SJoME) adalah jurnal ilmiah yang berisi tentang publikasi hasil karya penelitian, perancangan dan kajian teori di bidang ilmu teknik mesin dan permesinan, meliputi konversi energi, manufakturing, material dan perancangan desain produk. SJoME diterbitkan oleh Program Studi Teknik Mesin Fakultas Teknik, Universitas HKBP Nommensen, Medan Indonesia. SJoME terbit 2 (dua) kali dalam setahun, yaitu pada bulan Februari dan Agustus.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 6 Documents
 1 
Search results for , issue "Vol 2 No 1 (2020): Edisi Agustus 2020" : 6 Documents clear
Laju Korosi Pada Baja Karbon Sedang Akibat Proses Pencelupan Pada Larutan Asam Sulfat (H2SO4) dan Asam Klorida (HCl) dengan Waktu Bervariasi Miduk Tampubolon; Roy Ganda Gultom; Lestina Siagian; Partahi Lumbangaol; Charles Manurung
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 2 No 1 (2020): Edisi Agustus 2020
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (309.24 KB) | DOI: 10.36655/sproket.v2i1.294

Abstract

An experiment has been conducted to determine corrosion rate of medium carbon stell with sulfuric acid solution, Aquades 90,2% + H2SO4 9,8% and hydrochloric acid solution, Aquades 96,8% + HCl 3,2%. By using weight loss method, if medium carbon steel dipped into sulfuric acid solution then the corrosion rate is faster than it dipped into hydrochloric solution. If medium carbon steel dipped in a long time than the corrosion rate slowing down.
Analisa Kekuatan Bahan Komposit Yang Diperkuat Serat Bambu Menggunakan Resin Polyester Dengan Memvariasikan Susunan Serat Secara Acak Dan Lurus Memanjang Rokki Manurung; Sutan Simanjuntak; Jesayas Sembiring; Richard A M Napitupulu; Suriady Sihombing
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 2 No 1 (2020): Edisi Agustus 2020
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (316.236 KB) | DOI: 10.36655/sproket.v2i1.296

Abstract

Composites are materials which are mixed with one or more different and heterogeneous reinforcement. Matrix materials can generally be polymers, ceramics and metals. The matrix in the composite serves to distribute the load into all reinforcing material. Matrix properties are usually ductile. The reinforcing material in the composite has the role of holding the load received by the composite material. The nature of the reinforcing material is usually rigid and tough. Strengthening materials commonly used so far are carbon fiber, glass fiber, ceramics. The use of natural fibers as a type of fiber that has advantages began to be applied as a reinforcing material in polymer composites. This study seeks to see the effect of the use of bamboo natural fibers in polyester resin matrix on the strength of polymer composites with random and straight lengthwise fiber variations. From the tensile test results it can be seen that bamboo fibers can increase the strength of polymer composites made from polyester resin and the position of the longitudinal fibers gives a significantly more strength increase than random fibers.
Perbandingan Performansi 4 Variasi Siklus Kompresi Uap 2 Tingkat Siwan Ediamanta Perangin-angin; Himsar Ambarita; Waldemar Naibaho; Parulian Siagian; Marhiras Sitanggang; Libianko Sianturi
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 2 No 1 (2020): Edisi Agustus 2020
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (263.4 KB) | DOI: 10.36655/sproket.v2i1.311

Abstract

Keberadaan Pengkondisan Udara (AC) tidak terlepas dari aspek kehidupan sehari-hari. Pengkondisian Udara memanfaatkan prinsip termodinamika siklus kompresi uap. COP merupakan parameter untuk melihat kinerja dari mesin pendingin tersebut. Dalam penelitian ini, salah satu cara untuk meningkatkan COP dari mesin Pendingin adalah memodifikasi siklus 1 tingkat menjadi siklus 2 tingkat. Karya inimengkaji perbandingan model siklus kompresi uap 2 tingkat dengan beberapa variasi. Perbandingan ini menggunakan sofware ASPEN PLUS V10 untuk melihat performansi dari setiap varian. Untuk fluida kerja (Refrigeran) yang digunakan adalah R-32. Dari hasil simulasi Varian no III menunjukkan nilai COP yang lebih tinggi dari pada varian lainnya.
Pengaruh Pengoperasian Wide-Body Aircraft Terhadap Kelancaran Arus Lalu Lintas Penerbangan di Makassar Air Traffic Service Center Daniel Rumani; Hadi Prayitno; Intan Rizka Subandi
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 2 No 1 (2020): Edisi Agustus 2020
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (80.127 KB) | DOI: 10.36655/sprocket.v2i1.459

Abstract

This study aims to obtain a description of whether there is an influence between the movement of wide-body aircraft both departure and arrival on flight delays as a measure of the smooth flow of flight traffic at the Makassar Air Traffic Service Center. The research concludes that there is a positive relationship between the operation of wide-body aircraft and flight delays of 0.870. The positive correlation indicates that the more wide-body aircraft operations, the flight delay will increase, which if there is an increase in flight delays, the smooth flow of flight traffic will decrease. The coefficient of determination is 75%, which means that the effect of the operation of wide-body aircraft on flight delays is 75% and the rest is determined by other factors not included in the research section. The equation obtained from the regression test is Y = -5,679 + 1,872 X. So, if the operation of wide-body aircraft increases by 1, the flight delay will increase by 1,872 at a constant of -5,679.
Pengaruh Pemenuhan Slot Time Terhadap Target Take-Off Time di Perum LPPNPI Cabang Utama Jakarta Air Traffic Service Center Daniel Rumani; Zonar Anjab Rabbani; Hadi Prayitno
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 2 No 1 (2020): Edisi Agustus 2020
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (100.388 KB) | DOI: 10.36655/sproket.v2i1.460

Abstract

This research was conducted at the Jakarta Air Traffic Service Center (JATSC) starting from March 2020 to July 2020 using the quantitative associative correlation method. The research population was all departing aircraft at Soekarno-Hatta International Airport using various runways and taxiways and aprons. The samples used were all aircraft departing from Soekarno-Hatta International Airport and navigation services were provided by the Jakarta Air Traffic Service Center (JATSC) in three, namely from November 2019 to January 2020 and using cluster (area) sampling techniques. The data collection technique used is a documentation study containing data on the fulfillment of Target Take Off Time (TTOT) and data on each aircraft movement required for research (such as aircraft identification, Estimate Off Block Time, taxitime, etc.). Furthermore, the data analysis technique use disparametric statistics in the form of data assumption tests followed by relationship analysis tests.
Kajian Jarak Aman Antara Arrival Traffic dan Departure Traffic Pada Unit Aerodrome Control Tower di Perum LPPNPI Kantor Cabang Pontianak Daniel Rumani; Zinat Tamami; Endang Sugih Arti; Pangsa Rizkina Aswia
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 2 No 1 (2020): Edisi Agustus 2020
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (75.324 KB) | DOI: 10.36655/sproket.v2i1.461

Abstract

Supadio International Airport is an airport that serves various types of aircraft (Boeing, Airbus, ATR, Hawk, CN259), and does not have a rapid exit taxiway, in its guidance, Perum LPPNPI Pontianak Branch Office enforces rules for Boeing and Airbus-type arrival traffic for backtrack at the end of the runway, but this rule does not apply to aircraft with other types such as ATR and Cessna. This of course creates a time difference to clear the runway for arrival traffic of the Airbus and Boeing types. This study aims to obtain a safe distance between arrival traffic and departure traffic at the Perum LPPNPI Pontianak Branch Office by applying the calculation of The Brazilian Air Navigation Management Center (CGNA) Runway Capacity Calculation by adjusting the current airport conditions. From the research results, it is found that the value of the safe distance between arrival traffic and departure traffic by considering the aircraft classification can produce a more optimal safe distance.

Page 1 of 1 | Total Record : 6

 1 

Filter by Year

2020 2020


Reset
Filter By Issues
All Issue Vol 7 No 2 (2026): Edisi Februari 2026 Vol 7 No 1 (2025): Edisi Agustus 2025 Vol 6 No 2 (2025): Edisi Februari 2025 Vol 6 No 1 (2024): Edisi Agustus 2024 Vol 5 No 2 (2024): Edisi Februari 2024 Vol 5 No 1 (2023): Edisi Agustus 2023 Vol 4 No 2 (2023): Edisi Februari 2023 Vol 4 No 1 (2022): Edisi Agustus 2022 Vol 3 No 2 (2022): Edisi Februari 2022 Vol 3 No 1 (2021): Edisi Agustus 2021 Vol 2 No 2 (2021): Edisi Februari 2021 Vol 2 No 1 (2020): Edisi Agustus 2020 Vol 1 No 2 (2020): Edisi Februari 2020 Vol 1 No 1 (2019): Edisi Agustus 2019 More Issue