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Journal Of Engineering Sciences (Improsci)
Published by Ann Publisher
ISSN : 30323452     EISSN : 30317088     DOI : https://10.62885/improsci.v1i1
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Industrial & Manufacturing Engineering Mechanical Engineering
Journal Of Engineering Sciences (Improsci) merupakan peer-reviewed jurnal yang mempublikasikan artikel-artikel ilmiah dalam bidang industri. Artikel-artikel yang dipublikasikan di Jurnal Improsci meliputi hasil penelitian ilmiah asli (prioritas utama), artikel ulasan ilmiah yang bersifat baru (tidak prioritas), serta hasil kajian dalam bidang industri.
Arjuna Subject : Teknik (semua kategori) - Tenik Industri dan Manufaktur
Articles 63 Documents
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Analysis and Improvement of Production Process Activities of Arikyd 36xx HV Products at PT. Highpolymer Aristek with Manufacturing Cycle Effectiveness and Fishbone Diagram Technique Natasya, Natasya
Journal of Engineering Sciences Vol 1 No 1 (2023): vol 1 No 1 Agustus 2023
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v1i1.5

Abstract

PT. Aristek Highpolymer is a company engaged in the chemical industry by producing synthetic resins and polyurethanes. In carrying out its business processes, PT. Aristek Highpolymer produces 6 types of products, one of which is arikyd 36xx hv products. In carrying out the production process arikyd 36xx hv there is a delay due to high cycle time that affects effectiveness. With these problems, it is necessary to conduct an analysis of production process activities in order to find the root cause of delays and solutions that are expected to minimize or reduce delays that occur. In this study, the manufacturing cycle effectiveness (MCE) method will be used to be able to determine and improve production effectiveness and identify non-value-adding activities using Fishbone Diagram. From the results of research using the Manufacturing Cycle Effectiveness (MCE) method, the effectiveness of the production process was obtained by 74%, this shows that in carrying out the production process there are still activities not adding value by 26%. Then the root cause of the problem was identified using the fishbone diagram method and it was known that there were 4 main factors that became the problem of non-value added in the production process, namely: Lack of training in production activities, less ergonomic machines and lack of maintenance, Lack of tools in production process activities and inefficient production process layout.
Pencak Silat Match Score Assist Application Susanto, Budi
Journal of Engineering Sciences Vol 1 No 1 (2023): vol 1 No 1 Agustus 2023
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v1i1.8

Abstract

In 1973 for the first time, pencak silat competed precisely at PON VIII in Jakarta. Until now, matches have always been held at the district level and even ASEAN in the annual activity agenda. In a match, of course, there is an assessment to find the final result of a match, the match assessment tool in each match event is still manual, which uses paper and pen media to determine the value of the match, but such a scoring model has problems in the time of accumulation of total assessments, the loss of assessment data paper after the match and the high costs incurred to buy match assessment tools. It is hoped that the Pencak Silat Match Assist Score Application can help assess pencak silat matches and enjoy its usefulness in all pencak silat martial arts games at the regional, district, and even national levels.
Supplier Selection Using the Analytical Hierarchy Process (AHP) Approach in Ma' Ipeh MSME Waeni, Waeni; Kartini, Nuri
Journal of Engineering Sciences Vol 1 No 1 (2023): vol 1 No 1 Agustus 2023
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v1i1.9

Abstract

In the Analytical Hierarchy Process (AHP) method, a hierarchical structure chart is formed to be able to solve a complex and unstructured problem. Which aims to define a problem from the general to the specific. The problem hierarchy is structured to assist in a decision-making process by taking into account all decision elements involved in the system. Ma'Ipeh Micro, Small and Medium Enterprises (MSME) are one of the community industries that are engaged in onion processing, in order to be able to produce a product that is in accordance with the wishes of consumers. Until now, Ma'Ipeh MSME continue to maintain performance both in terms of products and suppliers. To keep things in good condition and continue to grow, it is necessary to select suppliers that are in accordance with the needs and criteria of MSME. The purpose of this study was to find criteria for selecting suppliers, determining the priority of onion suppliers, and determining follow-up on all other onion suppliers according to their performance. The method used in this research is the AHP. The AHP method is used for effective decision making on complex issues. The criteria used in selecting suppliers include price, quality, service and quantity determination. The results of calculations using AHP, obtained the onion supplier with the best value, namely supplier Saniyah with a weight of 0.951. The next priority supplier is Karim with a weight of 0.337, then Amelia with a weight of 0.279.
Web-Based Furniture Sales Information System Minah Jaya, Suhana
Journal of Engineering Sciences Vol 1 No 1 (2023): vol 1 No 1 Agustus 2023
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v1i1.11

Abstract

The development of e-commerce in Indonesia can make something promising. Where the company is engaged in the production of furniture, wood processing production materials, multiplex and HPL finishing, with the goods produced ready for use by consumers. The goods produced are in the form of household furniture such as cupboards, tables, kitchen-sets, and other furniture items. The introduction method in marketing existing products at the company is by offering directly to consumers and also by participating in furniture and interior exhibitions held by certain activities. At this time, Teak Megah Furniture wants to expand the distribution of its sales area, namely by creating an online sales system or what can be called e-commerce. It is hoped that with this online sales system, company owners can reap more profits than usual. For this reason, the author created a system with the title in the final project "Web-Based Furniture Sales Information System
Acetylene Welding of Brass Materials for Radiator Cover: A Study on the Weld Quality and Performance Setyo, Nugroho; Harmi Tjahjanti, Prantasi Harmi Tjahjanti
Journal of Engineering Sciences Vol 1 No 1 (2023): vol 1 No 1 Agustus 2023
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v1i1.28

Abstract

Brass material is important for all industrial parts. Brass had good ability work in cold or hot conditions, in solid state CuZn is capable of dissolving more crystals in the mixture. At temperatures of 902°C peritectic transformation occurred where Zn soluble in 32.5%. Solubility is increased up to a temperature of about 450 ° C to 39% and then in equilibrium will decrease, the length of the heating and cooling process is very long. With descriptive technique showed that the weld strength brass highest (7863.1 kgf / mm2) is that the surface of the specimen suffered welding rubbing with a gap distance of 0.2 and 0.3 mm, both with water cooling or air cooling, and the condition other relatively much lower strength (3144.89 kgf / mm2). Welding the workpiece surface is not polished strength is low. Specifically, properties - mechanical properties of brass can be improved by the addition of small amounts of other alloying elements without reducing the characteristics of the brass in general. But with a maximum limit zinc levels should not exceed 42% because it will result in a brass are fragile because of excess levels of zinc, and cannot be used commercially. with the addition of other elements as reinforcing elements of brass such as silicon, bismuth, selenium and others to improve the ability of the brass in the machining process. Welding results by using three different types of welding wire shows that, at the time of welding is performed with brass welding wire in the market there is no trouble found. Welding speed specimen is also calculated using a stopwatch, and the speed required for welding in 3 specimens, the average in the first specimen takes 5 minutes for the welding process. And the visual results produced is also satisfied.
Range of Types of Local Element Synthesis Forms and Non-Local on Villa Isola Building in Bandung City Dwiyandana, Dani
Journal of Engineering Sciences Vol 1 No 2 (2023): Vol 1 No 2 October 2023
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v1i2.65

Abstract

The Indis architecture of the 1920s to 1940s in Indonesia was a phenomenon of the formation of Dutch colonial buildings with high architectural value that still survive today. The shape results from combining modern European architecture with Indonesian vernacular architecture. The research uses a range theory approach to the type of architectural synthesis forms, architectural synthesis theory, local and non-local elements theory, architectural synthesis form theory, archetypes theory, and typology theory. The research methodology is carried out with qualitative and quantitative approaches. The qualitative approach is descriptive and interpretative research, where the data is more concerned with interpreting local and non-local architectural elements in the object of study. The quantitative approach is confirmatory to prove it under the research objectives. The results of the study are expected to provide an understanding of the range of types of synthesis forms of local and non-local elements; aspects that affect the range of types of synthesis forms; form, form, and type of architectural synthesis; the range type model of the architectural form on Indis architecture building.
Determination of Maintenance Intervals Using Multi-Criteria Approach to Increase Machine Availability at a Cement Company M. Taufik, Ilham; Prasetyaningsih, Endang; P. A. Hidayat, Nita
Journal of Engineering Sciences Vol 1 No 2 (2023): Vol 1 No 2 October 2023
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v1i2.66

Abstract

A downtime will decrease machine availability that will affect reliability and maintainability. If interval time between two consecutive machine failures is approach to zero, it shows that the machine reliability is low, and so the availability. In the other hand, if interval time between is high, the machine availability and reliability are high. However, the procuring cost of the machine components is expensive. The problem is what is the maintenance interval time in order to optimize machine availability and reliability. In this study, the downtime is minimized by determining maintenance intervals using a multicriteria, i.e. reliability, availability, and maintainability (RAM). The model used in this research is the Age Replacement Model. A case study of a cement company is taken to show the determination of the maintenance interval. The observation shows that the Kiln Division has the longest total downtime of 1,846 hours/year although the Kiln Division has implemented overhaul during 15 days and maintenance one times. The total downtime of the Kiln Division was caused by failure to the Grate Cooler machine by 56.582%. A maintenance interval is proposed, and the result shows that the proposed maintenance intervals reduce total downtime by 86.6% and improve machine availability by 1,8%.
Handling of the Preparation of Wicker Raw Materials with ABC Analysis Approach Kartini, Nuri
Journal of Engineering Sciences Vol 1 No 2 (2023): Vol 1 No 2 October 2023
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v1i2.67

Abstract

In connection with the importance of ABC method analysis in company management, this can be applied to rattan companies that aim to classify or group raw material inventories and find out the raw material items often used in each production. From the results of this study, it can be concluded that the ABC analysis approach to controlling rattan raw material inventory can be classified as follows: Class A classification is classified as raw materials that require strict control, consisting of Mandola Polished AB rattan raw materials, CL rattan Lasio Mandola Polished BC rattan. Class B classification is classified as requiring moderate control, consisting of 8 items of rattan raw materials, namely Tohiti rattan, which has a percentage of total cost, Subaliyu rattan, Semambo rattan, Pietrit rattan, Mandola Semi Polished AB rattan, Mandola Semi Polished CD rattan, Core rattan, Manau rattan. Class C classification includes loose control, consisting of 4 rattan raw materials items: Mandola Semi Polished BC rattan, Jawit rattan, Mandola Semi Polished CD rattan, and Sanjat rattan.
Analysis of the Implementation of the Construction Safety Management System (SMKK) on the Cisempur-Budiwangi Road Reconstruction Activity, Cibalong District Tasikmalaya Regency Nuruzzaman, Wildan
Journal of Engineering Sciences Vol 1 No 2 (2023): Vol 1 No 2 October 2023
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v1i2.68

Abstract

The construction service industry is an industrial sector with a high risk of work accidents. For this reason, implementing the Construction Safety Management System (SMKK) is expected to reduce the number of work accidents. Many Road Reconstruction construction projects are carried out without implementing the Construction Safety Management System (SMKK) following the rules referring to PUPR Minister Regulation Number 10 of 2021 concerning Construction Safety Management System Guidelines. This study aims to determine the implementation of the Construction Safety Management System (SMKK) on Cisempur – Budiwangi Road Reconstruction Activities, Cibalong District, Tasikmalaya Regency. The research was conducted in several places in the Budiwangi Road Reconstruction project, Cibalong District, Tasikmalaya Regency. This research is qualitative descriptive, with data obtained by observation, conducting interviews, and filling out checklists. The results of the study: 1). The level of implementation of the Construction Safety Management System (SMKK) with a percentage value of appropriate application of 67.44% and findings of nonconformity of 32.56% (Minor Category). 2). The factor causing the non-fulfillment of applications is the absence of processing documents and special formats for changes in the field that impact K3. 3) Response and improvement actions that can be taken are to create special procedures and formats related to changes that have implications for K3.
Furnace Engine Modification to Lower Power Catur Ahadi, Yeyen; Harmi Tjahjanti, Prantasi
Journal of Engineering Sciences Vol 1 No 2 (2023): Vol 1 No 2 October 2023
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v1i2.69

Abstract

Furnace machine or heating furnace is a tool used for heat treatment processes or usually called heat treatment, furnace machines have several types from the beginning found furnace machines, namely induction furnaces/conventional furnaces and then transformed into electric furnaces, electric furnaces are more often used for processes heat treatment because it is cleaner compared to the convection furnace.The furnace machine requires 5000 watts of power, 13.1A. to reach the temperature of 8000 takes 7296 seconds. Furnace machine testing is by quenching using ST-42 steel which is held at 6000 and varying time, the first test material is not treated with heat traetment, for the second test material with a variation of 15 minutes, third 30, fourth 60, fifth 90, sixth 120 minute. the results of the quenching process were tested using the Brinell and Vickers hardness test methods.

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