Jurnal Online Teknologi Industri (UMI FTI - Fakultas Teknologi Industri, Universitas Muslim Indonesia Makassar)
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COMPOSITE VOICE-ABSORBING MATERIALS MADE OF POLYESTER-REINFORCED PARTICLES WASTE GLASS PLASTIC AD BIOCOMPOSITE FIBER
Get PDFNatural fiber as a sound-absorbing biocompisite material is believed to not only reduce noise pollution but also to absorb heat. There are many underutilized coconut husks, which so far the use of coconut husks is only conventional. The focus of this research is to find the right solution in the use of coconut fiber as well as composite material engineering for technological purposes. The research method will use pure experiments using controlled specimens in the mechanical Engineering laboratory of ITB, including mechanicals tests, soundproofing. The results of he tensile test are the tensile strength of the largest coconut fiber composite fiber is found in the fiber volume fraction of 25% with a value of 59.072 Mpa, followed by 20% fiber fraction with a value of 59.025 Mpa, 15% fiber fraction with a value of 56.736 Mpa, fiber fraction 10% with a value of 56.807 Mpa, 5% fiber fraction with a value 53.736. and for he results of the soundproof test with frequency of 250 Hz – 2000 Hz at 5% fiber fraction, it has an absorption coefficient value of 0,03, 10% fiber fraction, has an absorption coefficient value of 0.18, 15% fiber fraction has an absorption coefficient value of 0.18. 0.18, the fiber fraction of 20 has an absorption coefficient of 0.22, the fiber fraction of 25% has an absorption coefficient of 0.28
LIFE JACKET DESIGN AS SELF PROTECTION FOR TRADITIONAL FISHERMAN
Get PDFOne of the personal protective equipment that fishermen must have is a life jacket. The existing life jackets basically comply with government regulations such as being brightly colored, able to float and have a whistle. However, the price of life jackets is considered relatively expensive, so fishermen often choose not to use or buy used life jackets. Materials for life jackets such as Neoprene, Nylon, and Polyester have varying characteristics and are adapted to the environment in which they are used. Implementation of RFID technology in life jackets increases identification efficiency and safety management in waters. The yellow color of the life jacket improves visibility in the water, especially in low light. The dimensions of the life jacket are informed by anthropometric studies, with an innovative design that allows development when needed. Assembly design efficiency shortened assembly time from 13201 to 5110 minutes through design improvements
PRODUCTION PLANNING OPTIMIZATION AND SALES BUDGETING USING LAGRANGE MULTIPLIER IN WOVEN STRAPPING CRAFTS
Get PDFUKM Tunas Harapan produces woven strapping products such as shopping baskets, along-along, mats, and pots with distribution areas such as Riau, North Sumatra, West Sumatra, Jambi, and Aceh. UKM find it difficult to plan the amount of production and control sales so that they often overproduce, which causes profits to be not maximized. The research objectives are calculating the optimal production amount and allocation to each distribution area, making an optimal sales budget plan, and calculating the profit obtained using the Lagrange multiplier method. The optimal number of production results for each product per period: 1878 shopping baskets, 1983 along-along, 283 mats, and 1425 pots. The allocation for each distribution area of each product in 1 year is Riau: 4662 shopping baskets, along- 4807 along, 837 mats, and 3658 pots. West Sumatra: 4445 shopping baskets, 5097 along-along, 841 mats, 3262 pots. North Sumatra: 5023 shopping baskets, 5608 along-along, 714 mats, 4017 pots. Jambi: 4198 shopping baskets, 4197 along-along, 615 mats, 3743 pots. Aceh: 4211 shopping baskets, 4092 along-along, 417 mats, pots, as many as 2421. While the optimal sales budget is Rp. 3,496.856,390 with the total profit obtained Rp. 1,748,394,343 the percentage of profit is 49.99%
Studi Perbandingan dan Hubungan Antara Densitas dan Kuat Tekan Tanah Laterit pada Lapisan Limonit dan Saprolit di Area Penambangan Nikel di Kecamatan Lasolo
No full textDifferences in the degree of weathering in the lateritic soil zoning will cause differences in the strength or compressive strength of the lateritic soil material. To find out the difference in strength or compressive strength of soil material, it is necessary to test the physical properties and mechanical properties of the soil material. This research activity aims to obtain information regarding the values of density and compressive strength and to determine the relationship between density and compressive strength of soil material in limonite and saprolite soil layers. From this research activity, it is known that the density value of the soil material in the limonite layer is greater than that of the saprolite layer, while the compressive strength value of the soil material in the limonite layer shows a higher compressive strength value compared to the saprolite layer. In addition, the results of this study, it is also known the relationship between density and compressive strength of lateritic soil, namely the greater the density value of the lateritic soil material, the greater the compressive strength value, and vice versa, the smaller the rock density value, the smaller the compressive strength value
MODIFICATION OF TECHNOLOGY ACCEPTANCE MODEL OF THE USE OF M-BANKING IN SMALL MEDIUM ENTERPRISES IN KUDUS DISTRIC USING A STRUCTURAL EQUATION MODELLING
Get PDFThis study aims to determine the acceptance of MSME technology in the Kudus Regency in using electronic payment service technology or e-payment as a payment method. The method used is Technology Acceptance Model 3 (TAM 3). Identify acceptance of m-banking using a questionnaire given to owners and employees. Analyze by testing the hypothesis of m-banking acceptance data by testing validity, and reliability and proceed to test using the Structural Equation Modeling (SEM) method. The results of the test show that 5. Owners and employees of MSME actors in the Kudus Regency can accept the use of m-banking in carrying out any performance because it makes it easier when there is a time of urgency
SUPPLY CHAIN RISK MITIGATION OF STAKEHOLDER TUNA FLOSS USING HOUSE OF RISK METHOD
Get PDFTuna floss is a processed food that is a popular product. As a manufacturer, KWN Fatimah Az-Zahrah is required to make quality products. The supply chain activity of tuna floss will be faced with various risks. Thus, supply chain risk management is needed for the stakeholders involved, which consist of suppliers, manufacturers, distributors, and retailers to prevent the risks. This research aims to identify risk events and risk agents for stakeholders, evaluate the priority of the risk agents for stakeholders, and design effective mitigation for stakeholders. The method used is the House of Risk (HOR), which is divided into 2 parts: HOR 1 is for determining risk agents priority based on Aggregate Risk Potential (ARP) values, while HOR 2 is for determining mitigation action based on level of effectiveness. The Supply Chain Operation Reference (SCOR) to mapped the risks. The results of HOR showed 7 priority risk agents and 11 mitigation for suppliers, 11 priority risk agents and 22 mitigation for manufacturers, 5 priority risk agents and mitigation for distributors, 3 priority risk agents and 5 mitigation for retailers that are effective in reducing the probability of the occurrence of risk agents in the supply chain of tuna floss
Analisis Diskontinuitas Stabilitas Terowongan Bekas Bijih Mangan Kalilingseng Kulon Progo Berdasarkan Klasifikasi Massa Batuan
No full textThe Kalilingseng Tunnel is an ex-mining manganese ore mine located in Ngruno Hamlet, Karangsari Village, Pengasih District, Kulon Progo Regency, Yogyakarta Province. Now, the tunnel has been planned to be used as a geotourism where the stability of the tunnel is very important to research. Therefore, this survey was conducted to analyze the discontinuity of the tunnel to simulate in the original Young's modulus value, a decrease of 75% and 50% to the strength factor value and to analyze whether there is an influence of the seismic factor on the displacement and the strength factor. From the results of the rock mass classification investigation by Hoek and Brown’s Rock Mass Rating, it was found that the strength factor value based on Finite Element Analysis with non-linier criterion failure was more than 2 where the results were categorized as safe without any support in the tunnel so that it could be used as a geotourism location
Analisis Fraktal Untuk Menentukan Kuat Geser Batuan Sedimen di Kabupaten Ende - Lianunu Provinsi Nusa Tenggara Timur - Indonesia
No full textRock surface roughness is an important parameter used in calculating the shear strength of rocks, both of which greatly affect the stability of a slope. In this research, direct shear strength testing was carried out on 5 sedimentary rocks to obtain the value of cohesion and internal friction angle. The research objectives include (1) Calculating the fractal dimension (D), joint roughness coefficient (JRC), and rock shear strength. (2)Analysis of rock shear strength calculation results from rock direct shear test results. To determine the fractal dimension using the box-counting method in ImageJ FracLac software. The factual D and JRC are two interrelated parameters, where the higher of D value, will increase the JRC value, this is influenced by the grain size. In the fine grain size sample, the D values ranged 1.0034-1.0045, medium grain size 1.0057, and coarse grain size 1.0084-1.0085. Calculations with the new equation, the JRC values in the samples S1 (8-10), S2 (12-14), S3 (4-6), S4 (12-14), and S5 (6-8). The comparison of graphs shows a pattern that is almost similar to previous researchers. The difference in the value of shear strength is influenced by the level of rock surface roughness using fractal dimensions provides a higher detail value. By using statistical analysis (RMSE and MAD), it shows a small error value, namely the results of the research which have the lowest RMSE (0.14) and MAD (0.11) values, meaning the results of calculations using fractal dimensions are correlated with the measured data from the laboratory shear test.
Kandungan dan Ketebalan Endapan Nikel Laterit di Kecamatan Langgikima Kabupaten Konawe Utara Provinsi Sulawesi Tenggara
No full textThis study is located in Lameruru Village, Langgikima District, North Konawe Regency, Southeast Sulawesi Province. The research area consists of morphological units of low hills and hills with an altitude of 200 to 350 meters above sea level. This study aims to determine the morphological conditions and analyze the thickness of laterite nickel deposits based on the morphological conditions in the study area. The morphological observation method was based on morphometric analysis and morphographic analysis, while the thickness analysis of laterite nickel deposits was based on exploration drill data consisting of collar data, lithological data, survey data, and assay data. The analytical method used in this study is the XRF (X-Ray fluorescence) geochemical method to determine the elemental content based on the percentage content of the laterization zone in the study area. The results of the study show that the morphology in the study area was divided into low hills and hills with slightly sloping, sloping, slightly steep, and steep slopes. The thickness of laterite nickel deposits in the study area follows the shape of the topographical slope where in areas with a higher slope level the nickel deposits formed are thinner and the lower the slope level the thicker nickel deposits are formed
Pengaruh DBR (Debit Banjir Rencana) Terhadap Perancangan Model Saluran untuk Kebutuhan Sistem Penyaliran Tambang PT. Smart Rizqullah Berkah
No full textDrainage is a mine drainage channel that every mining company must carry out in fulfilling the implementation of good mining engineering principles. In ensuring that the channel design is following the mine drainage needs, it is necessary to consider several things, one of which is the planned flood discharge. This study focuses on looking at the effect of the planned flood discharge on the design of the drainage channel. The methodology used is the descriptive method, which is data collection based on regional characteristics. The study results were obtained based on several data analyses, namely hydrological risk, planned rainfall, catchment area, runoff discharge, and planned flood discharge. Based on the results of the analysis, the dimensions of the channel based on the runoff are obtained, namely, the depth of the channel is 2.73 meters, the surface width is 6.24 meters, the bottom width is 3.02 meters, the side cross-section width of the channel is 3.23 meters and the water level is 2.63 meters. After being correlated with the planned flood discharge, there is an increase in the average dimensions of 6.4% to a channel depth of 2.95 meters, a surface width of 6.64 meters, a base width of 3.22 meters, and a channel cross-sectional width of 3.43 meters and a face height. water 2.80 meters. Thus, in selecting the channel dimensions, it is recommended to use the channel dimensions correlated with the planned flood discharge to the runoff discharge