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INDONESIA
Majalah Ilmiah Pengkajian Industri
Published by Badan Pengkajian dan Penerapan Teknologi
ISSN : 14103680     EISSN : 25411233     DOI : -
Core Subject : Engineering,
Aerospace Engineering Chemical Engineering, Chemistry & Bioengineering Engineering Industrial & Manufacturing Engineering Transportation
MIPI, Majalah ilmiah Pengkajian Industri adalah wadah informasi bidang pengkajian Industri berupa hasil penelitian, studi kepustakaan maupun tulisan ilmiah terkait dalam bidang industri teknologi proses rekayasa manufaktur, industri teknologi transportasi dan kelautan, serta industri teknologi hankam dan material. Terbit pertama kali pada tahun 1996 frekuensi terbit tiga kali setahun pada bulan April, Agustus, dan Desember. MIPI diterbitkan oleh Deputi Bidang Teknologi Industri Rancang Bangun dan Rekayasa-BPPT
Arjuna Subject : -
Articles 601 Documents
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MACHINE LEARNING APPLICATION IN RESPONSE TO DISASTER RISK REDUCTION OF FOREST AND PEATLAND FIRE: Impact-Based Learning of DRR for Forest, Land Fire and Peat Smouldering Hammam Riza; Eko Widi Santoso; Agus Kristijono; Dian Nuraini Melati; Firman Prawiradisastra
Majalah Ilmiah Pengkajian Industri Vol. 14 No. 3 (2020): Majalah Ilmiah Pengkajian Industri
Publisher : BRIN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/mipi.v14i3.4426

Abstract

Peat forest is a natural swamp ecosystem containing buried biomass from biomass deposits originating from past tropical swamp vegetation that has not been decomposed. Once it burns, smoldering peat fires consume huge biomass. Peat smoldering fires are challenging to extinguish. These will continuously occur for weeks to months. Experts and practitioners of peat smoldering fires are the most recommended effort to prevent them before they occur with the strategy: 'detect early, locate the fire, deliver the most appropriate technology.' Monitoring methods and early detection of forest and land fires or 'wildfire' have been highly developed and applied in Indonesia, for example, monitoring with hotspot data, FWI (Fire Weather Index), and FDRS (Fire Danger Rating System). These 'physical simulator' based methods have some weaknesses, and soon such methods will be replaced by the Machine Learning method as it is developing recently. What about the potential application of Machine Learning in the forest and land fires, particularly smoldering peat fires in Indonesia? This paper tries to answer this question. This paper recommends a conceptual design: impact-based Learning for Disaster Risk Reduction (DRR) of Forest, Land Fire, and Peat Smouldering. Keywords: Artificial Intelligence; Machine Learning; Wildfire; Peat Smouldering; DRR impact-based
Optimization of Cross-linking Modification on Canna Starch with Sodium Acetate Using Response Surface Methodology Iffah Muflihati; Nur Khikmah
Majalah Ilmiah Pengkajian Industri Vol. 16 No. 1 (2022): Majalah Ilmiah Pengkajian Industri
Publisher : BRIN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/mipi.v16i1.5029

Abstract

Canna starch is obtained from the extraction of canna tubers. However, the unstable native of canna starch during processing makes its use limited. Crosslinking starch can make starch resistant to shear stress acid resistance and prevent viscosity decrease due to the rupture of starch granules during heating. The purpose of this study was to obtain the optimum conditions of concentration and duration of mixing sodium acetate for cross-linking modification of canna starch with viscosity as the primary response. This study used a factor of sodium acetate concentration and mixing time. The modification of canna starch by cross-linking affects the viscosity. Cross-linking in starch can strengthen the starch granules so that the starch granules are not easily gelatinized. The optimum viscosity condition was obtained from a sodium acetate concentration of 16.21% with a mixing time of 20.71 minutes to get the optimum viscosity of 43.7 cP. The high degree of substitution of sodium acetate in cross-linking modification affects the integrity of starch granules, where starch granules can affect the physicochemical characteristics of starch. The higher the DS value, the lower the amylose content and the solubility. However, increasing the degree of substitution can also increase the viscosity, swelling power, syneresis, and pH of the cross-linked modified starch. Keyword: Canna starch, cross-linking,  optimization,  sodium acetate.
Measurement of Geometric Variations of a Railway Truss Bridge (Case Study: BH77 Railway Bridge) Anindhya Mustika Larasati; Pariatmono; Erlangga Rizqi F; Mawardi Amin; Resmi Bestari M; Dimas Aryo S; Mulyadi Sinung H; Dwi Agus P; Wimpie Agoeng N. A; Thiya Fiantika; Emeralda Insani. N. S. P. J. D. S. P
Majalah Ilmiah Pengkajian Industri Vol. 16 No. 1 (2022): Majalah Ilmiah Pengkajian Industri
Publisher : BRIN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/mipi.v16i1.5177

Abstract

Monitoring the condition of the railway track on a regular basis needs to be carried out regularly to minimize risk. One of the causes of the decrease in the strength of the bridge structure can be caused by changes in cross-sectional dimensions. The existing dimensions of the bridge structure need to be known because they will affect the steel frame profile area, where the steel frame area will affect the size or the small value of the deflection and stress of the bridge structure. The dimensions of the frame need to be seriously considered so that the stress and deflection values ??of the bridge structure remain constant. This research was conducted at the BH 77 Railway Bridge in Tegineneng, Tanjungkarang-Martapura, Lampung, which uses a type frame configuration warren truss. This location was chosen to fit the research that was also conducted by Badan Riset dan Inovasi Nasional (National Research and Innovation Agency of Indonesia). Based on the measurement of the dimensions of the bridge truss that has been carried out, the results show that there is a difference in the value of the circumference of each rod with the standard deviation for each similar profile. The biggest difference in the circumference of the truss is the profile of H beam, 113 and 115 rods with dimensions of 340×300×15×18, the initial circumference value is 1,280 mm, and after the measurement is 1,289.42 mm with a standard deviation value of 0.91 mm. while for the smallest difference, namely the H beam profile, rod 110 with dimensions of 340×310×39×21, the initial circumference value is 1,300 mm and after the measurement is 1,300.33 mm with a standard deviation value of 0.24 mm. Keyword: BH77 bridge, Bridge deflection, Bridge structure, Measurement geometry,  Railway bridges, Steel structure, Structural Health Monitoring System.
Corrosion of Brass Fishing Vessel Propeller in Artificial Seawater Yaqin Rizqi Ilmal; Siahaan Juniawan Preston; Priharanto Yuniar Endri; Demeianto Bobby; Tumpu Mula; Abrori Muhammad Zaki Latif; Priyambodo Bambang Hari
Majalah Ilmiah Pengkajian Industri Vol. 16 No. 1 (2022): Majalah Ilmiah Pengkajian Industri
Publisher : BRIN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/mipi.v16i1.5188

Abstract

The propeller was an important component in the fishing vessels marine propulsion system. Brass was widely used as a fishing vessel propeller. Brass was chosen because it has good mechanical properties and good corrosion resistance. The content of seawater in Indonesia has levels of 3% – 3.5% NaCl. In addition to the level of Ion Cl-, environmental factors can affect corrosion rate of material or metal. The environmental factors that affect the corrosion rate are the level of salinity, pH, DO, temperature and TDS. The objective of the present work was to explain the corrosion rate of brass in artificial seawater in Indonesia with exposure time. The material used for research is fishing vessel propeller commercial in Indonesia market. Measurement of the corrosion rate of brass used the principle of weight loss according to ASTM G31-72 (2004). During the corrosion test, the artificial seawater solution was tested for its pH and salinity quality over time of immersion. The result of immersion brass in the artificial seawater shows that the corrosion rate decreases in 1-to-10-days exposure time due to the increase in salinity levels above 30‰. While the results of exposure time immersion above 15 days tends to increase the corrosion rate due to a decrease in pH level. pH level of seawater depends on the environmental conditions and tends not to change significantly. Keyword: Artificial Seawater, Brass,  Corrosion Rat, pH, Salinity.
The Fatigue Life Assessment of Sideboard on Deck Barge Using Finite Element Methods Alamsyah Alam; Amalia Ika Wulandari; Nugroho Septianda Oktavaro; M U Pawarah; Muhammad Riyadi
Majalah Ilmiah Pengkajian Industri Vol. 16 No. 1 (2022): Majalah Ilmiah Pengkajian Industri
Publisher : BRIN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/mipi.v16i1.5201

Abstract

A Deck barge is a type of ship that has a flat hull used to transport large amounts of cargo such as wood, coal, sand, etc. The deck barge uses retaining walls to transport bulk loads on deck known as sideboards which can collapse due to fatigue life. The purpose of this research is to determine the maximum stress and fatigue life of the sideboard construction based on the height of the bulk load on the sideboard using coal as the bulk load. The method used in this research is the finite element method with a high load case of coal loading to the sideboard is 2.24 m, 2.60 m, and 2.96 m. The results showed that a high load case of 2.24 m detected a maximum stress value of 79.25 MPa and a fatigue life of 81.16 years with 10 x 105 cycles. Load case with a high load of 2.60 m detected a maximum stress value of 110.11 MPa and a fatigue life of 24.72 years with 3.53 x 105 cycle. For a high load case of 2.96 m, a maximum stress value of 146.80 MPa was detected and a fatigue life of 9.28 years with  2 x 105 cycle. There is an increasing stress value by the rise of the load height against the sideboard and there is a decrease in the fatigue life in the construction. Keyword: Barge, Fatigue Life. Sideboard, Stress.
Study on Assessment and Feasibility of Hythane From POME to Improve Power Plant Performance Era Restu Finalis; Joni Prasetyo; Galuh Wirama Murti; SD Sumbogo Murti; Nesha Adelia
Majalah Ilmiah Pengkajian Industri Vol. 16 No. 1 (2022): Majalah Ilmiah Pengkajian Industri
Publisher : BRIN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/mipi.v16i1.5260

Abstract

Biogas power plant from POME is getting trendier because Indonesia is the largest palm oil producer in the world as the amount of palm oil production produces more POME and has a high COD. COD is commonly used as a base stoichiometry calculation for CH4 conversion. Correction on COD conversion for biogas production was done by considering CO2 rather than CH4 only. Combining H2 with CH4 is a worthy breakthrough because it can increase by 15% of electricity output. Such H2 and CH4 mixing has some advantages on the unique combustion property of H2 in CH4 (hythane). Economic analysis comparison on this mixing of biogas and conventional biogas was assessed to see the improvement because of an increase in LHV value in biogas. Based on previous experiments conducted by cascading H2 and followed by CH4 production, with an H2 in CH4 ratio of 1:3, an economic analysis was calculated according to an industry capacity of 60 tonnes FFB/hour. A previous biogas power plant needed an investment of $1,502,000 for 1.35 MWe, but $400,000 was later invested for 1.59 MWe by hythane, increasing 15%. The investment performance of this power plant gave IRR 43.96%, 9.95% higher, and low BEP, 34%. The biogas power plant is economically safe, does not suffer from losses even produces only 34% capacity. The payback period was 2.6 years, seven months shorter. In conclusion, an additional one bioreactor on the existing power plant is economically feasible. Keyword: POME (Palm Oil Mill Effluent), Hythane, Hydrogen Methane, Economic Analysis, Cascading Fermentation.
Analysis of BLDC Electric Motor Shaft Treatment Model Using Numerical Method Endra Dwi Purnomo Endra; Ammiruddin Aziz; Dewi Rianti Mandasari; Lia Amelia; Agus Krisnowo; Cuk Supriyadi Ali Nandar
Majalah Ilmiah Pengkajian Industri Vol. 16 No. 1 (2022): Majalah Ilmiah Pengkajian Industri
Publisher : BRIN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/mipi.v16i1.5263

Abstract

This research studies the shaft strength of a BLDC electric motor. A Shaft is one of the components in a rotary engine and functions to transmit power. The design calculation is needed to determine the effect of the strength of the material being treated. The strength analysis of the shaft used FEM (Finite Element Method). The shaft is modeled on the manufacturing design and tested by numerical simulation with Ansys Mechanical 14.5-BRIN commercial license software. The static simulation used a structural statics module with static and dynamic load input. The research method comparing the results of FEM simulations with two different types of materials is determined. Based on the simulation parameters, the selected material types are JIS S45C tempered and AISI 1045 cold-drawn. The simulation results represent the maximum stress (von Mises) and total deformation. The deformation value of S45C tempered material is slightly higher than that of AISI 1045 cold drawn. However, both materials have the same maximum von Mises stress. Keyword: AISI 1045, Cold drawn, Finite Element Method, Shaft, Static Structure, S45C, Tempered.
Editorial & Reviewer, Contents, Acknowledgements, Abstracts Endro Wahju Tjahjono
Majalah Ilmiah Pengkajian Industri Vol. 16 No. 1 (2022): Majalah Ilmiah Pengkajian Industri
Publisher : BRIN

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

Abstract

A Rare Earth Oxides-Containing Internal Reference Material of Purified Monazite from Bangka Island Ronaldo Irzon; Agus Didit Haryanto; Kurnia Miharja
Majalah Ilmiah Pengkajian Industri Vol. 16 No. 2 (2022): Majalah Ilmiah Pengkajain Industri
Publisher : BRIN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/mipi.v16i2.4879

Abstract

Monazite mineral contains a sufficient composition of rare earth elements which are currently required widely in modern industries. Reference materials are needed to validate the measurement results, including the rare earth elements analysis. This study presents the processing of purified monazite from the PT Timah Metallurgical Unit in Muntok to become low-cost and rare earth oxides-containing internal reference material. Eight X-ray fluorescence measurements of four splits of the monazite were done for precision test and to establish its information values. The high CeO2 and LaO2 composition (>10%) implies the economic worth of the studied sample. Based on the acceptance criteria of RSDexperimental <10%, RSDexperimental ?66%xCVHorwitz, and Horrat <2, the concentration of fourteen analytes is acceptable to be set as information values. The studied monazite content resembles the other purified one of Myanmar. Its much lower phosphate composition signifies that the sample is more precious than refined monazites from Iran and Australia. Keyword: Monazite, Internal reference material, XRF, REE.
The Influence of Padeye Placement on Ship Block Lifting Andi Mursid Nugraha Arifuddin; Muhammad Uswah Pawara
Majalah Ilmiah Pengkajian Industri Vol. 16 No. 2 (2022): Majalah Ilmiah Pengkajain Industri
Publisher : BRIN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/mipi.v16i2.5255

Abstract

Nowadays, steel ship construction in Indonesia is dominated by the hull block construction method. This method can reduce man-hours as the ship is manufactured by a division of the hull into several sections/blocks; here, it can be worked in parallel. Once work is finished on these blocks and then proceeding to the main hull for assembling, the lifting operation is performed on the blocks during this erecting process. Lifting of ship blocks must be planned safely to avoid damage. One of the items that must be considered is the position of the padeye. The placement or installation of the padeye in the block during the lifting operation plays a vital role in the deformation and working stress of the block structure. Consequences if this is not observed, which van cause misalignment in the welding join path on ship bloks due to excessive plastic deformation and stress. Therefore, this study aims to simulate the placement of a padeye that results in minimum deformation and structural stress. The method used in this research is the stiffness method applied in computer programs. In this studied, it had been recorded that the structure on the ship blok is deformed and stressed at each padeye position. Based on the simulation from 23 positions of the padeye, the optimal position of the pad eye is at position 10 in simulation 2 with deformation of x, y, and z coordinates which are 7 mm, 2 mm, and 7 mm, respectively. Generrally, In this case shown the deck girder and longitudinal beam structure is dominantly subjected to high deformation and stress in several position.   Keyword: Padeye,  Ship Block,  Lifting,  Deformation,  Stress.

Page 59 of 61 | Total Record : 601

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