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All Journal Rotasi Desimal: Jurnal Matematika JKIE (Journal Knowledge Industrial Engineering) Jurnal Sistem Teknik Industri IAIC Transactions on Sustainable Digital Innovation (ITSDI) Journal of Materials Exploration and Findings Jurnal Pengabdian Masyarakat Charitas
Isdaryanto Iskandar
Program Studi Teknik Mesin Unika Atma Jaya Jakarta
Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Social Sciences

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Analisis Pengaruh Perubahan Ukuran Cam Lobe Lift terhadap Performa pada Mesin Otto Empat Langkah Kurniawan, Nicholas; Soewono, Arka; Iskandar, Isdaryanto
ROTASI Vol 22, No 3 (2020): VOLUME 22, NOMOR 3, JULI 2020
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/rotasi.22.3.143-148

Abstract

The modification of cam lobe lift value was studied to observe its effects on the volumetric efficiency and performance of a 4-stroke Otto engine with a displacement of 150 cc. The testing was done by comparing the standard cam lobe with 7,36 mm lift and two other cam lobes with a higher lift, which is 8,24 mm and 8,53 mm. ANSYS software was used as a method to acquires the volumetric efficiency value, while a dynamometer was used to measures the performance. From the calculation and testing that has been done, the usage of both modification cam lobes increase the volumetric efficiency and performance of the engine. Compared with the standard cam, the cam with 8,53 mm lift result in an increase of volumetric efficiency from 78,51% to 84,1% and performance from 15,36 WHP to 15,76 WHP at 9000 rpm.
The Comparison of Pipe Thickness Selection Method Using Full Flange Rating and non-Full Flange Rating of Cryogenic Services in an LNG Plant Construction Agustar, Ari; Iskandar, Isdaryanto; Putra, Wahyuaji Narottama
Journal of Materials Exploration and Findings Vol. 1, No. 2
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Significant growth of gas demand as a source of power generation for domestic use and industries, mainly in the developed countries, has forced the effort to secure the gas supplies located thousands of miles away across the sea as an economical way of gas transportation instead of transporting by pipeline. LNG technology was created as the solution. Natural gas is refrigerated below its boiling point (-160oC to -162oC), known as cryogenic temperature or cryogenic service. Material of Construction (MOC) selection report showed that 304/304L and 316/316L Stainless Steel pipe could withstand and be suitable for this type of service. However, the SS pipe price could be much more costly than the CS pipe. An alternative philosophy to the full-flange rating is introduced in this paper to reduce SS pipe thickness without sacrificing safety issues and proper engineering practice. The philosophy of the pipe wall-thickness calculation method utilized in this paper showed no impact on the class 150 rating due to the selected thicknesses being equal or higher. However, the class 300 rating successfully reduced pipe selected thickness for pipe sizes larger than 24 inches ranging from 20,15% to 31,1%, and for class 600 rating successfully reduced the thickness ranging from 6,28% to 16,55% for pipe sizes 10 inches and larger. The overall pipe thickness reduction reduced pipe weight for cryogenic services by approximately 91,84 tons. The philosophy of the pipe wall-thickness calculation method for cryogenic services can be extended to all other services in the entire LNG production train to gain maximum cost savings for the pipe purchasing cost.
Rancang Bangun Akuaponik untuk Masyarakat Kelapa Dua Tangerang Soewono, Arka; Iskandar, Isdaryanto; Hutagalung, Rory Anthony; Fretes, Anthon de; Darmawan, Canisius Ivan
Jurnal Pengabdian Masyarakat Charitas Vol. 1 No. 1 (2021): Jurnal Pengabdian Masyarakat Charitas Juni 2021
Publisher : Program Studi Teknik Industri, Fakultas Teknik, Universitas Katolik Indonesia Atma Jaya Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/charitas.v1i1.2691

Abstract

Aquaponic is a combination hydroponic (cultivation of plants without soil) and aquaculture (fish growing) that promotes sustainable food production. In order to be adopted by general population, the design of aquaponics needs to be practical and economical. The main purpose of this community outreach is to design and introduce small-scale aquaponics system that can be used by homeowners with limited backyard. For this purpose, the community located at Kelapa Dua Tangerang was chosen as the main partner. The prototype of the small-scale aquaponics was then used as education and demonstration tool to encourage the community of Kelapa Dua Tangerang to adopt eco-friendly aquaponics cultivation system. The prototype of the aquaponics worked flawlessly with the water circulation inside the system was set at 0.046 litre/second. The water was used to supply adequate nutriens for water spinach, lettuce and pak choy which can be harvested in two months. In addition, this leafy greens can enhance the overall yard aesthetics. For the aquaculture, the catfish in the tank showed steady grow rate and healthy condition. In general, the education process can be considered successful as indicated by positive responses from the community (feedback score of 2.93 out of 4). From joint evaluation, the community excited with further development of the small-scale aquaponics.
Model Formulation for Estimating Oil Extraction Rate to Measure Oil Extraction Efficiency in Palm Oil Mill M Hudori; Iskandar, Isdaryanto; Setyanto, Djoko
Jurnal Sistem Teknik Industri Vol. 25 No. 1 (2023): JSTI Volume 25 Number 1 January 2023
Publisher : TALENTA Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jsti.v25i1.10596

Abstract

FFB that has high HQE and FCI will determine the OER that will be obtained at POM, so that OER can be estimated using HQE and FCI, ie by calculating the oil content in FFB and the potential for oil loss in loose fruit that is not collected in the plantation area. The purpose of this study was to formulate an OER estimation model to determine the processing efficiency of POM. This research is a qualitative and quantitative analysis research, which is a scientific study to formulate an OER estimation model based on HQE and FCI parameters which will be used as the dependent variable. Based on the results and discussion it can be concluded that OER, which is a parameter of oil palm processing performance at POM, can be estimated using a model formulation developed from HQE and FCI variables, where these variables are indicators of FFB harvesting performance in oil palm plantations.
Selection of foundation type of hospital building using analytical hierarchy process Hutahaean, Aswin Vincentius; Iskandar, Isdaryanto
Desimal: Jurnal Matematika Vol. 6 No. 1 (2023): Desimal: Jurnal Matematika
Publisher : Universitas Islam Negeri Raden Intan Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/djm.v6i1.14796

Abstract

In order to develop the Ministry of Defense Hospital dr. Suyoto in Bintaro, South Jakarta, a new 27-storey building will be built on the south side of the hospital complex. This study aims to select the type of foundation that is able to support the building above it, but with minimal disturbance due to vibration, noise, mud, and excavation, because the hospital must continue to operate, and relates to aspects of cost, time, and scope. The method used is the Analytical Hierarchy Process (AHP) involving five respondents who are considered construction experts from the Construction Center (Puskon) officers, planning consultants, supervisory consultants, and contractors. The results of the study found that concrete pile foundations with Hydraulic Static Pile Drivers (HSPD) were the most suitable for new building foundations from the five criteria and four alternative choices of foundations. In the detailed design process by the planning consultant, several pile caps were found that coincide with each other so it was decided to combine them into a large pile cap which also functions as a raft foundation. So that in its implementation, a combination of concrete piles with HSPD and raft foundations is used.
Analysis Capability Process of Fuel Tank Production: A Case Study in Manufacturing Industry Fernando, Very; Setiawan, Indra; Rizki, Yulizan; Hardi Purba, Humiras; Nurul Azizah, Fahriza; Iskandar, Isdaryanto
Journal Knowledge Industrial Engineering (JKIE) Vol 9 No 1 (2022): JKIE (Journal Knowledge Industrial Engineering)
Publisher : Department of Industrial Engineering - Universitas Yudharta Pasuruan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35891/jkie.v9i1.2919

Abstract

The competition in the automotive industry is increasingly challenging, where the company's task of ensuring customers are satisfied with the products we produce is the main factor in winning them. That is the value of the manufacturing industry to continuously improve quality. This study aims to reduce the reject rate and determine the priority of problems in the fuel tank production process. This study uses the six sigma method based on a simple problem-solving methodology consisting of Define, Measure, Analyze, Improve and Control. This method combines various statistical tools and other process improvement approaches. The results of this study show that the company's Sigma level in February carried out in the welding & press section obtained a sigma value of 4.0 and process capability of 1.34. This means that the quality control process that has been carried out has not been going well because the product is defective and still needs to be improved. Finally, this paper provides some recommendations for improving process capability.
Implementation of KNN Methods And GLCM Extraction For Classification Of Road Damage Level Lubis, Adyanata; Iskandar, Isdaryanto; W Panjaitan, MM Lanny
IAIC Transactions on Sustainable Digital Innovation (ITSDI) Vol 4 No 1 (2022): October
Publisher : Pandawan Sejahtera Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34306/itsdi.v4i1.564

Abstract

Road damage that occurs on several road surfaces causes huge losses, especially for road users such as travel time, congestion, accidents and others , so it is necessary to assess the level of road damage. At this time, problems in determining the level of road damage such as detecting cracks, potholes, calculating the width of cracks, the percentage of cracks and generating the level of road damage are still carried out by slow manual calculations using the Surface method. Distress Index (SDI). In this study, the KNN and GLCM methods will be used to detect road damage. Based on the results of the tests carried out, the accuracy of the results of disease detection with the KNN method and GLCM extraction depends on the number of datasets contained in the system. The process of measuring the level of road damage to get the results of the level of damage to the road can be done quickly, namely by entering a road damage image into the application.
Co-Authors Adyanata Lubis Agustar, Ari Darmawan, Canisius Ivan Djoko Setyanto Fernando, Very Fretes, Anthon de Humiras Hardi Purba Hutahaean, Aswin Vincentius Indra Setiawan Kurniawan, Nicholas M Hudori Nurul Azizah, Fahriza Putra, Wahyuaji Narottama Rizki, Yulizan Rory Anthony Hutagalung Soewono, Arka W Panjaitan, MM Lanny