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Logic : Jurnal Rancang Bangun Dan Teknologi

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Published by Politeknik Negeri Bali

ISSN : 1412114X EISSN : 25805649 DOI : https://doi.org/10.31940/logic.v21i3

Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering

Logic : Jurnal Rancang Bangun dan Teknologi is a peer-reviewed research journal published by Unit Publikasi Ilmiah, Pusat Penelitian dan Pengabdian Masyarakat, Politeknik Negeri Bali, aiming at promoting and publishing original high quality research in all disciplines of engineering and applied technology. All research articles submitted to Logic should be original in nature, never previously published in any journal or presented in a conference or undergoing such process across the world. All the submissions will be peer-reviewed by the panel of experts associated with particular field. Submitted papers should meet the internationally accepted criteria and manuscripts should follow the style of the journal for the purpose of both reviewing and editing.

Arjuna Subject : Teknik (semua kategori) - Tenik Industri dan Manufaktur

Articles 132 Documents

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A DAMAGE ANALYSIS OF FRONT FINAL DRIVE PLANETARY GEAR BACKHOE LOADER CASE 580 SN Hairian Rahmadi; SUDIRMAN
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 22 No. 2 (2022): July
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Today's technology continues to develop and these developments are applied to the field of heavy equipment, therefore it is necessary to analyze one of the components of the Backhoe Loader Case 580SN heavy equipment unit, namely the Front Final Drive Planetary Gear. The Backhoe Loader is one of the heavy equipment units designed to be able to carry out one of the functions and activities of the construction process which is heavy when carried out by human labor, such as: transporting, lifting, loading, moving, digging, mixing, and so on in an easy, fast, efficient and safe way. This research method analyzes and directs spaciousness, this is because this company has a lot of heavy equipment, one of which is the Backhoe Loader which is the object of research. The results of field analysis Damage to the Front Final Drive Planetary Gear Backhoe Loader Case 580 SN is caused by a lack of Final Drive lubricant when the unit is running, this is because the O-Ring Final Drive is wearing out so that the lubricant seeps out.

Filtration Design Modeling Study with Variation in Number of Filters, Palm Oil Mill Effluent Meshing Hajar Isworo; Muhammad Khalil; Ika Kusuma Nugraheni; Kurnia Dwi Artika
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 22 No. 3 (2022): November
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Processing activities of oil palm fruit into CPO produce liquid waste that can pollute the environment, so it is necessary to process liquid waste in palm oil mills. This study aims to design the filtration to overcome the existing pollution in the palm oil mill. The table shows the formation of 3 filter ABC formations has the highest speed of 6.419 m/s. When we place a large meshing hole on the first level, the speed and speed are smaller, this can be seen in the CBA, CBAC and CBACB formations. The meshing formation with a small size in the first position can increase the speed and pressure, we can see this in the ABC, ABCA and ABCAB formations so that the oil palm wastewater filtration process can run smoothly without a decrease in fluid velocity.

LOW DENSITY AND VISCOSITY OF USED LUBRICANT OIL CONVERSION OVER ALPO4 CATALYST TOWARDS FUEL OIL Agus Dani; Nurlia Pramita Sari; Haris Puspito Buwono
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 22 No. 2 (2022): July
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

The conversion of used lubricating oil towards fuel oil by catalytic conversion is a suitable way to recycle waste oil. Catalyst has a key role in used lubricating oil conversion. Therefore this research was to study the catalytic cracking of used lubricating oil, and thus its properties as an alternative for fuel oil over aluminum fosfate. The experiments were carried out in a batch microreactor at a temperature of 350-400 oC, atmospheric initial air pressure, 5% w/w catalyst concentration, and reaction time of 5 min over aluminum fosfate catalyst. Aluminum fosfate catalyst produced low-density liquid product, and low viscosity of used lubricant oil conversion at any temperature of 350 – 400 oC, compared with those over alumina. Moreover, product converted at 400 oC is easy to flare. The credible reason for the low density and viscosity of AlPO4 can be proposed by three potentials: this catalyst is an acid type, the acid type is Bronsted and Lewis and this catalyst has a resistance toward contaminant.

Tensile Strength Analysis of AISI 1045 Steel Results of Smaw Welding Using Variations of Preheat and Cooling Media Bayu Pranoto; Subagiyo; Samsul Hadi; Muhamad Zidan Wibowo
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 22 No. 3 (2022): November
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

In the welding process, there are many factors that need to be considered, including heat input, cooling rate, the material being welded, and the use of added materials, if these factors are not considered, they can cause cracks in the American Iron & Steel Institute (AISI) 1045 material. to determine the effect of preheat variations on tensile strength, the effect of cooling media on tensile strength, and to determine the interaction of preheat variations and cooling media on tensile strength. This research method used experimentally by varying the preheat temperature 250⁰C, 325⁰C, 400⁰C, and the cooling medium was lime, sand, and normal air, then tensile test was carried out. The results showed that the cooling medium affected the tensile strength with the highest tensile strength of 64.35 kg/mm2 on the sand cooling medium, while the preheat variation had no effect on the tensile strength as shown by a graph close to the horizontal straight at the tensile strength ranging from 60 kg/mm2, interaction between preheat and cooling medium has no effect on tensile strength. This is indicated by the tensile strength values that are almost close to each preheat point, namely at a temperature of 250⁰C between 53-67 kg/mm2, at 325⁰C between 56-60 kg/mm2, and a temperature of 400⁰C between 51-64 kg/mm2. In this study it can be concluded that a good cooling medium uses sand media with a preheat temperature of 250⁰C.

ANALYSIS OF SMK3 IMPLEMENTATION LEVEL AND ACCIDENT RISK IN THE ADMINISTRATION OFFICE BUILDING DEVELOPMENT PROJECT AT GUSTI NGURAH RAI AIRPORT BALI I Ketut Sutapa; I Nyoman Ardika; I Nyoman Sutapa; I Nengah Darma Susila; I Putu Agus Krisnadinata
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 22 No. 2 (2022): July
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Every construction project, whether high-tech or simple, certainly has risks in its implementation process, therefore it is necessary to establish an Occupational Safety and Health Management System to minimize Occupational Safety and Health (K3) risks, but there are still many construction companies that are lacking in identifying K3 risks. and implementing an Occupational Health and Safety Management System (SMK3) in the process of implementing a construction project. The purpose of this study was to determine the level of OSH risk based on work items, as well as to measure the level of implementation of SMK3 in a construction project. In this research, the object of the case study is the construction project of the Administration Office Building at I Gusti Ngurah Rai Airport, Bali, during the lower structure work. After carrying out risk identification, 35 risk questions and 5 jobs are obtained, namely Borepile, Pilecap, Pendestal Column, Sloff, Roof Frame, then the results of the identification are processed and the risk level is obtained from the implementation of the Administration Office Building Construction Project at I Gusti Ngurah Rai Airport, Bali. Enter the Medium Category with a risk value of 8.69, while for the implementation of the Occupational Safety and Health Management System (SMK) the Administration Office Building Construction Project at I Gusti Ngurah Rai Airport, Bali is included in the good category with a total application value of 83%. Hopefully this research can become a reference in identifying K3 risks and a reference in implementing the Occupational Health and Safety Management System (SMK).

THE IMPLEMENTATION OF 5S WORK CULTURE (SEIRI, SEITON, SEISO, SEIKETSU AND SHITSUKE) AT KHANSA OTO CARE Tri Budiyanto Tri; Wisnu Nurcahyono
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 22 No. 2 (2022): July
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Khansa Oto Care is a service provider to pamper vehicles with its services, namely car wash, nitrogen filling, oil and air filter change service, and accessories sale to make vehicles interiors comfortable. The work environment has not implemented the 5S system such as unused items are present in the work environment (Seiri), items have no storing place (Seiton), there is a lot of oil and plastic waste (Seiso), lack of caring for work equipment (Seiketsu), and the lack of the workers discipline in implementing the work culture (Shitsuke). The purposes of this research were to implement the 5S Work Culture and to find out its effect on the workers activities after the implementation The approach taken was by observation, distributing questionnaires using the Likert scale method, interviews, and documentation of the 5S implementation. Based on the implementation of the 5S Work Culture, it provided comfort and flexibility for the workers in carrying out their work (Seiri), it eased the workers to find the work items (Seiton), it provided comfort for the workers in doing their work (Seiso), it made the work equipment always in an optimal condition and reduced the risk of machine damage, thus, it could minimize the equipment damage cost (Seiketsu), and as an implementation form of commitment of the owner and the work (Shitsuke). Based on the program score, the score before the 5S implementation was 34.3% which was in the category of bad. After the implementation, it showed the score of 92.5% which was in the category of very good. It means that all of the workers recognized that the 5S Work Culture had a good impact on the work environment.

Design and Build an Internet of Things (IoT) Automatic TV Broadcasting Antenna System Jon Endri; Elizah Fitri; Suroso
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 22 No. 3 (2022): November
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Nowadays, television is used for educational purposes. It is easily accessible through air-to-air broadcasts and can be connected via satellite. What is witnessed on a television screen is all image and sound elements. Many people feel uncomfortable watching television shows because when the television is used, the broadcasts that appear are not all images and sounds that can be seen and heard properly. Most antennas used by every household are patented in a certain position. Based on the existing description, the problem that would be solved is how to design an IoT-based TV broadcasting antenna system to make it easier to watch television with clear broadcasts and good sound without changing the antenna's position manually. With the design method, the tool to be made consists of a flowchart and a circuit design, namely, building a system with inputs, processes, and outputs. The automatic TV broadcasting antenna system based on the internet of things (IoT) is a system that points the antenna in the best position for each selected broadcast that can be controlled via Android using the Blynk IoT Application. After that, the test was carried out by taking data at two locations for the IoT antenna. The assessment results showed that each location was different, and the position of the antenna direction would also be different, so the location of the antenna must be changed by changing the angle contained in the Arduino IDE software.

DESIGN AND BUILD OF 1 (ONE) AXIS PLASMA CUTTING MECHANISM I Wayan Suma Wibawa
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 22 No. 2 (2022): July
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Plasma cutting is a cutting process that is widely used by the metal industry and individuals. Plasma cutting is widely used because it has many advantages, including: Cheap tools and widely sold in the market, low operating costs because they use electric power and compressed air from a compressor, unlike oxyacetylene cutting which requires oxygen, the available tools are more flexible and easy moved. The use of plasma cutting is relatively easy, by setting the machine and then directing the plasma torch to the cutting plane as needed by maintaining a stable movement and height. However, when we are going to make repeated cuts, our concentration and physical power will automatically decrease, so we need a tool that can assist us in directing/regulating the plasma in which the tool functions as a plasma cutting mechanism. Based on this background, the author made a 1 axis plasma cutting torch rail mechanism which is driven by an electric motor, this tool has a workspace/cutting length of 1300 mm, with tool sizes Length, width and height 1950 mm x 300mm x 100 mm. This mechanism/tool can be installed on torches of several brands of plasma cutting, with various bracket speeds that can be adjusted as needed depending on the thickness of the plate being cut, from cutting speeds of 300 mm/minute to 2,000 mm/minute, adjustable cutting height 0 mm up to 10 mm, with a cutting angle setting of 0o to 90o and this mechanism tool can also be used portable / can be moved according to the required work location. Plasma cutting mechanism can be used to make it easier to make straight/horizontal cuts.

THE EFFECT OF PYROLYSIS TEMPERATURE ON THE HEAT VALUE OF PYRO-OIL USING PLASTIC WASTE I Made Agus Putrawan
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 22 No. 2 (2022): July
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

This work primarily investigated the pyrolysis of smalls scale fixed bed reactor using plastic wastes type LDPE during slow pyrolysis (non-isothermal) in a batch reactor to assess the effect of different temperatures on the product yield and heating value. The calorie bomb of Parr Instrument was performed to investigated heating value of pyro-oil product at different temperatures 250, 275, 300oC. The pyro-oil obtained at higher product yield of 300 oC while the increased temperature will affect to increase the product yield of pyro-oil. The highest heating value of pyro-oil produced at a reactor temperature of 300oC is 9,769.78 cal/gr. From the results of pyro-oil using plastic waste type LDPE, the characteristics of the heating value are equivalent to diesel fuel.

REDESIGN OF HORIZONTAL COFFEE ROASTERS WITH TEMPERATURE, TIME AND ROTATION CONTROLS I Ketut Suherman; I Wayan Suirya; I Made Anom Adiaksa
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 22 No. 2 (2022): July
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Coffee roasting is still using clay pans with the traditional method and heat is obtained from firewood fires. Only 20% of the national coffee bean production which reaches 600,000 tons per year is processed and marketed as secondary products. Treatment of temperature and roasting time can affect the physical mechanical properties of coffee, namely a faster decrease in water content, an increase in brittleness and an acceleration of color change. Adding the function of regulating the rotation speed of the stirrer on the horizontal roaster prototype while still emphasizing the traditional method equipped with temperature and time control to improve product creation. At a temperature of 12000 C coffee has not shown the level of maturity where the weight has not been very well reduced and there is no smell of aroma. Roasted maturity occurred at 18000 C for 15 minutes with a rotation of 100 RPM causing a significant weight loss of 60% and a strong aroma of coffee has been smelled. At a temperature set to 22000 C although the time and rotation varied, resulting in a completely burnt and immature coffee exhibited by a weight loss of only 50%. The results showed that temperature, time and rotation greatly affect the quality of roasting results.

Page 5 of 14 | Total Record : 132

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Bali

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name M. Yusuf

Contact Email yusuf@pnb.ac.id

Phone +62361-701981

Journal Mail Official logic@pnb.ac.id

Editorial Address Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali, Jl Kampus Bukit Jimbaran, Badung, Bali, Indonesia

Location Kab. badung, Bali INDONESIA

Abstract

Abstract

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Abstract

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Abstract

Abstract

Abstract

Contact Name
M. Yusuf

Contact Email
yusuf@pnb.ac.id

Phone
+62361-701981

Journal Mail Official
logic@pnb.ac.id

Editorial Address
Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali, Jl Kampus Bukit Jimbaran, Badung, Bali, Indonesia

Location
Kab. badung,

Bali

INDONESIA