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All Journal Sprocket : Journal of Mechanical Engineering

Suriady Sihombing

Prodi Teknik Mesin Universitas HKBP Nommensen

Author-ID : 3391946

Automotive Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Pengaruh Waktu Tahan Dan Penambahan Kadar Garam Dapur (NaCl) Dalam Media Pendingin Air Pada Proses Hardening Terhadap Sifat Mekanik Dan Struktur Mikro Baja Karbon Rendah Richard A M Napitupulu; Suriady Sihombing; Charles Manurung; Jonner Togatorop
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 1 No 1 (2019): Edisi Agustus 2019
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

This study aims to determine the effect of salt (NaCl) in water cooling media with different levels of 10%, 16% and 25% against the hardness level of low carbon steel tested with Vickers after hardening in the hardening process and to determine the proportion of media which coolant produces the highest hardness from the use of water cooling media which is added to different levels of NaCl. The independent variable in this study is the amount of salt (NaCl) dissolved in water cooling media with different percentages, namely 10%, 16% and 25%. While the dependent variable is the value of the hardness of the material tested with Vickers. Hardness in the hardening process with water cooling media which added different salt (NaCl), 10%, 16% and 25% is 185.02 VHN, 229 VHN and 284 VHN. From the results of the study it was found that there was an effect of the salt content (NaCl) in the water cooling media on the level of hardness in the hardening process of low carbon steel. Higher level of salt will increase value of hardness. The highest hardness was achieved in cooling media with a concentration of 25% NaCl that is equal to 284 VHN followed by cooling media with a concentration of 16% NaCl of 229 VHN and the lowest was a cooling medium with a concentration of 10% NaCl of 185.02 VHN.

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

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.

Analisa Karakteristik Getaran Pada Mesin Asphalt Mixing Plant Tipe Apollo ANP- 1500 Berdasarkan Kapasitas Pembuatan Aspal Jalan Pada Daerah Horizontal, Vertikal Dan Longitudinal Berdasarkan Time Domain Suriady Sihombing; Wilson Nababan; Ros Anita Sidabutar; Yetty Riris Saragi; Partahi Lumbangaol; Salomo Simanjuntak
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 3 No 1 (2021): Edisi Agustus 2021
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

Asphalt mixing plant machine is a tool used to process several materials into road asphalt, where it is necessary to know how to analyze the vibration characteristics of the asphalt mixing plant machine based on the capacity of making asphalt road in horizontal, vertical and longitudinal areas based on the time domain. The research method is carried out by collecting data on the amount of deviation, speed and acceleration that arise due to the processing of several materials so as to produce road asphalt based on differences in the capacity of different asphalt processed. Based on the measurement results, it is found that the highest vibration occurs at the asphalt mixing plant machine seat for a capacity of 60 tons/hour where the magnitude of the deviation is 0.222 mm in the horizontal direction at 100 seconds, the largest velocity is 11.99 mm/s horizontally in the second 40 mm/s and the largest acceleration is 369.7 mm/s2 in the horizontal direction of the 20th second. According to the ISO IS 2372 standard, the vibration of the Apollo ANP-1500 asphalt mixing plant machine enters class IV with a generator capacity above 75 KW, to be more precise (150KVA = 120KW). Then it can be analyzed that the generator vibration falls into the category of "vibration within tolerance limits and is only operated for a limited time" where the highest speed is 11.99 mm/s.

Pengaruh Material Reflektor Terhadap Kinerja Kompor Energi Surya Richard A M Napitupulu; Charles S.P Manurung; Waldemar Naibaho; Suriady Sihombing
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 3 No 2 (2022): Edisi Februari 2022
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

The use of solar energy in Indonesia is the right choice as an alternative energy for energy needs in industry or to meet daily energy needs in households. To utilize solar energy for cooking purposes, a solar cooker can be used. Factors that affect the performance of this solar cooker in addition to the length of time it shines and the intensity of thermal radiation from the sun are the reflexivity of the collector material, the surface area of the collector, the geometric shape and location of the focal point of the collector, the normal direction of the collector surface to the incoming sunlight, and the amount of heat loss to the surroundings. The materials used as reflectors in the research on this solar cooker are zinc (aluminum and galvanized) AL-Zn and black paint back ground mirror glass. This material is re-glued on top of a ready-made parabolic dish from the market. Then look for the focal point that corresponds to the diameter of the parabola. From the results of the study, it can be concluded that the back ground mirror glass material with black paint is better to use than the AL-Zn zinc plate if it is used as a raw material for the surface material (reflector) of solar cooker. Likewise, the efficiency of the solar oven in terms of the amount of heat that is converted into energy for heating the pot is better for a solar oven than a reflector with black paint back ground mirror glass material. And the efficiency of the solar cooker from the black paint back ground mirror on the first day is 16.4% to 25.7% on the second day, while the efficiency of the solar cooker from the AL-Zn zinc plate on the first day is 16.4% to second day 22.8%. The emissivity of the solar stove with AL-Zn zinc plate reflector on the first day was 0.02906 and on the second day 0.02892, while the emissivity of the solar cooker with black paint back ground mirror reflector on the first day was 0.01812 and the second day was 0 0.02544.

Analisa Karakteristik Getaran Pada Mesin Stone Crusher Berdasarkan Kapasitas Pemecah Batu Koral 50 Ton/Jam Pada Daerah Horizontal, Vertikal dan Longitudinal Berdasarkan Time Domain Suriady Sihombing; Waldemar Naibaho; Wilson Nababan; Amran Sinaga
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 4 No 2 (2023): Edisi Februari 2023
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36655/sprocket.v4i2.895

Stone Crusher Machine is one type of machine that is very popularly used among road construction in Indonesia, whether it is used for road or building transportation purposes where it is necessary to know how to analyze the vibration characteristics of the Stone Crusher machine based on the capacity of breaking coral in horizontal, vertical and longitudinal areas. based on the time domain. The research method is carried out by collecting data on the magnitude of the deviation, speed and acceleration that arise due to the process of breaking coral so that it produces several dimensions of the size of crushed stone. This study conducted tests at three points, namely the primary crusher, secondary crusher and tertiary crusher with a capacity of 50 tons/hour. Based on the measurement results, it is found that the highest vibration occurs in the horizontal direction of the secondary crusher machine seat where the displacement is 125.3 µm in the horizontal direction at 15 seconds, the largest velocity (Velocity) is 4.79 mm/s in the primary crusher. horizontal direction at the 45th second. and the magnitude of Acceleration (Acceleration) 1236 mm/s2 is found in the tertiary crusher vertical direction at the 45th second. According to the ISO 10816-3 standard, the vibration response results at the highest speed are 4.79 mm /s, categorized in zone B is light green, the vibration of the machine is good and can be operated without restrictions.

Co-Authors Amran Sinaga Charles Manurung Charles S.P Manurung Jesayas Sembiring Jonner Togatorop Lumbangaol, Partahi Richard A M Napitupulu Rokki Manurung Ros Anita Sidabutar Salomo Simanjuntak Sutan Simanjuntak Waldemar Naibaho Waldemar Naibaho Wilson Nababan Wilson Nababan Yetty Riris Saragi

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