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All Journal International Journal of Advances in Applied Sciences Jurnal Energi Dan Manufaktur Machine : Jurnal Teknik Mesin INTEK: Jurnal Penelitian Jurnal Teknik Mesin Indonesia Journal of Industrial Engineering & Management Research (JIEMAR) Jurnal Teknik Mesin Sinergi
Rusdi Nur
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Aerospace Engineering Humanities Automotive Engineering Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics

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Kaji Eksperimental Sifat Mekanik Komposit Resin Epoxy Berpenguat Serat Alam Suyuti, Muhammad Arsyad; Nur, Rusdi; Wahyono Patandean, Tri; Maulana S. Usman, Achmad
Jurnal Teknik Mesin Sinergi Vol 23 No 1 (2025): April 2025
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/sinergi.v23i1.5516

Abstract

Komposit merupakan material yang terdiri dari dua kombinasi dua jenis bahan berbeda dimana tiap bahan tersebut memiliki sifat mekanik yang berbeda. Komposit yang diteliti dalam penelitian ini yaitu komposit serat yang menggunakan serat alam sebagai penguatnya dan resin epoxy sebagai matriks. Serat alam yang digunakan ada dua jenis yaitu serat sisal dan serat ijuk. Tujuan penelitian ini untuk mengetahui sifat mekanik komposit yang menggunakan serat sisal dan serat ijuk sebagai penguat. Sebelum dibuat menjadi spesimen uji, serat sisal direndam dalam NaOH 5% selama 4 jam dan serat ijuk dalam NaOH 5% selama 2 jam. Serat dalam komposit ini sebanyak 15% dari massa matriks kemudian persentase massa antara serat sisal dan serat ijuk dibagi menjadi tujuh variasi yaitu S15I0, S12I3, S9I6, S7.5I7.5, S6I9, S3I12 dan S0I15. Arah susunan serat yaitu serat lurus kontinu dan serat acak. Berdasarkan hasil penelitian ini, kekuatan tarik terbesar terdapat pada komposit variasi serat sisal 12% dan serat ijuk 3% (S12I3) dengan arah serat lurus kontinu yang memiliki kekuatan tarik rata-rata 115,01 MPa. Untuk kekuatan bending terbesar pada komposit variasi serat sisal 9% dan serat ijuk 6% ( S9I6) dengan arah serat lurus kontinu yang memiliki kekuatan bending rata-rata 123,83 MPa. Sedangkan kekuatan impak terbesar pada komposit variasi serat sisal 9% dan ijuk 6% (S9I6) dengan arah serat lurus kontinu yang memiliki energy impak rata-rata 20.71 kJ/mm2. Penelitian ini juga menunjukkan bahwa dengan adanya kombinasi anatara serat sisal dan serat ijuk dapat meningkatkan sifat mekanik komposit dan serat lurus kontinu memiliki sifat mekanik yang lebih baik dibandingkan dengan serat acak.
Calculating the Power Demand in Turning of AISI 316L Stainless Steel Through the Cutting Forces Data Nur, Rusdi
INTEK: Jurnal Penelitian Vol 3 No 1 (2016): April 2016
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (416.844 KB) | DOI: 10.31963/intek.v3i1.24

Abstract

Abstract—Austenitic stainless steel AISI 316L has been widely used for orthopedic implants due to its mechanical properties, corrosion resistance and biocompatibility. Machining of austenitic stainless steel are often regarded as 'difficult to machine' and classed a single group of steels, based on experience with the most common austenitic types. This paper presents a methodology for practical calculation of power demand based on cutting force that will be compared with experimental results especially turning process. Based on a previously proposed definition, the power demand in metal cutting is the energy required cutting. This paper provides a complete list of mathematical expressions needed for the calculation of power demand and demonstrates their utility for turning operation of austenitic stainless steel using coated and uncoated carbide.
Determining Interval Time of Maintenance in Bosowa Cement Indonesia using Reliability Method Suyuti, Muhammad Arsyad; Nur, Rusdi
INTEK: Jurnal Penelitian Vol 3 No 2 (2016): Oktober 2016
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1572.566 KB) | DOI: 10.31963/intek.v3i2.52

Abstract

Maintenance for machining and production facility is an important aspect to ensure a smooth production process. During this time, it was performed regular maintenance based on technical advice from supplier’s engines which just shows things in general without considering the actual operating conditions. This paper aims to plan the maintenance strategies for the Finish Mill unit based on reliability analysis by considering the target system reliability and cost of improving reliability. The data distribution obtained the most appropriate distribution. Based on the data obtained distribution parameters, then the function of the reliability of each part an be determined so that the value of the reliability of each part and the overall system for a specific time period can be calculated. The results showed that the failure or breakdown Mill Finish Unit was majority caused by the part of 561.BM1, 531.WF1, 531.BC6, 531.BC2, 531.BC1, 561.SR1 and 531.BC3. it means that need to focus o the reliability analysis to allocate their parts.
Rancang Bangun Alat Eliminasi Gas Buang Menggunakan Mekanisme Ejektor Saini, Makmur; Nur, Rusdi; Sattar, Sattar; Ibrahim, Ibrahim
INTEK: Jurnal Penelitian Vol 4 No 2 (2017): Oktober 2017
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (732.473 KB) | DOI: 10.31963/intek.v4i2.154

Abstract

Environmental pollution (pollutants) can be caused by natural events or human care through uncontrolled industrial and technological activities, this can be a threat to living things including humans in the future. This phenomenon is caused by the entry of particles or chemical substances that do not exist in the natural component so that it exceeds the amount that should be. Pollution is the inclusion of substances, energy and aliens into the environment so that the quality of the environment decreases and no longer suitable allocation. Efforts to reduce or control environmental pollution that some environmental scientists and practitioners have done in a better way by the structures produced by various industries and technologies that are seen as backbones. The research installation can provide detailed information about the shape and structure of the current in the pipe (analogized as the exhaust) in the direction and the vertical velocity to air will be inhaled by the fluid of the liquid (air) as motive fluid in the opposite direction. The suction strength of the liquid against the airflow is greatly determined by the vacuum pressure in the chamber because of the effect of the working ejector that is geometrically formed so that the image can be adjusted to that achievement. The parameters used to measure performance in the design of this air-contaminating air-conditioning installation plant are composed of several variables in the ratio of changes between air velocity and liquid flow in opposite directions, vacuum compressions are formed large enough, the fluid flow capacity of the ejector, revascular and the ability to transform gas pollutants into liquid pollutants.
Effect of Recurrent Heating on Mechanical Properties of Artificial Teeth: A Review Asmeati, Asmeati; Nur, Rusdi
INTEK: Jurnal Penelitian Vol 5 No 2 (2018): Oktober 2018
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (259.805 KB) | DOI: 10.31963/intek.v5i2.572

Abstract

Nowadays lots of material is produced to increase there-mineralization of tooth enamel. The eggshells are one ofmaterials that can also increase the re-mineralization of toothenamel. Eggshells are one of calcium carbonate sources with levelsof 95%. The egg produces waste in the form of eggshells. One ofthe alternatives in tackling the eggshells is to turn it into a calciumcompound. It is the main ingredient of bones and enamel tooth.This paper is proposed to investigate the effect of recurrent heatingon mechanical properties of artificial teeth. This review wasdescribed some study experimental that was performed to heat thespecimen with 20oC, 40oC, 100oC, and 120oC. The heating result ofspecimen was observed to determine the hardness using Brinneland Vickers scale. It was concluded that the higher of heatingtemperature will decrease the hardness of denture base acrylic.
Optimizing the Cutting Time and Surface Finish for EDMWire Cut Process of AISI 1045 Steel Nur, Rusdi; M, Muas; Risal, Syah
INTEK: Jurnal Penelitian Vol 5 No 2 (2018): Oktober 2018
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (417.165 KB) | DOI: 10.31963/intek.v5i2.574

Abstract

This paper aims to optimize the machinedsurface as well as to study the effect of current strength andwire speed on wire cut machining on AISI 1045 steel againstthe timing of roughness of straight gear surface. The surfaceresults analyzed are the surface roughness values obtained byconducting surface roughness testing. Variations of currentused are 3 amperes, 5 amperes, and 7 amperes, while the wirespeed used is 8mm / min, 10 mm, min, and 12 mm / min. In theprocess of wire cut machining is used a brass cutting materialwith 0.25 mm wire diameter. The results showed that thegreater the current and wire speed used then the surfaceroughness value will be lower, otherwise the smaller currentand wire speed used then the surface roughness value will behigher. The results of data analysis using ANOVA analysis,correlation, and regression method obtained optimal conditionto get low surface roughness value and fast cut time that is at 7amperes current with wire speed 8 mm / min.
Designing and Manufacturing of Grain Dryer Machine using Coconut Shell Fuel as an Alternative Heat Energy Dermawan, Dermawan; Nur, Rusdi; Susanto, Tri Agus; Amrullah, Amrullah
INTEK: Jurnal Penelitian Vol 8 No 2 (2021): October 2021
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/intek.v8i2.3351

Abstract

Many problems in the process of drying grain with a solar heat source. One of the factors is the erratic weather, where the rainy season comes along with harvest time. To overcome these obstacles, a grain dryer was designed that uses a rotary system that is simpler and more efficient and uses coconut shells as an alternative fuel. This study aims to obtain fast and affordable grain drying results by farmers using a rotary system dryer with coconut shell fuel. The benefit of this research is to provide an alternative solution for the community in dealing with harvesting in the rainy season by reducing land for drying grain. Equipment preparation was carried out in particular by using standard equipment to cut and connect the seat frame including the use of silencers and gasoline-fueled motors as propulsion and other supporting equipment. The components of each unit of grain drying machine are assembled and tested in stages according to procedures and functions. The test results show that the use of coconut shell can reach drying temperatures faster than the use of LPG, coconut shell fuel is better at reducing the moisture content of grain than the use of LPG. Testing of coconut shell fuel is done by drying 30 kg of grain for 20 minutes and 15 minutes. It can be concluded that the use of coconut shell as an alternative fuel can achieve a faster drying temperature than the use of LPG fuel. The use of coconut shell fuel to dry 30 kg of grain and reach a moisture content of up to 12% requires an effective time of 15 minutes.
Experimental Study on the effect of Cooling Media on Impact Strength in the Heat Treatment Process of Medium Carbon Steel S45C Risal, Syah; Mahadir, Mahadir; Suyuti, Muhammad Arsyad; Nur, Rusdi
INTEK: Jurnal Penelitian Vol 9 No 2 (2022): October 2022
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/intek.v9i2.4188

Abstract

Steel possesses mechanical properties that can enhance the hardness and microstructure of its surface, and heat treatment is one way to achieve these properties. This study aimed to investigate the impact of different cooling media on the heat treatment process and the resulting impact strength of S45C medium carbon steel. The steel specimens were heated at various temperatures (800oC, 850oC, and 900oC) in a furnace and then cooled using three different media: water, oil, and air. The study concluded that for all three temperatures, the specimens cooled with oil had the highest impact value. Furthermore, oil and air immersion resulted in ductile fractures, while water immersion caused brittle fractures.
Co-Authors A.Ari Putra Abdul Rahman Adil Adil, Adil Ahmad Nurul Muttaqin Amrullah Amrullah Andi Fadel Ahmad Apollo . Arial Arial Arthur H. Razak Arthur Halik Razak Asmeati Asmeati, Asmeati Asrul Hidayat C. R. Rakka Dermawan, Dermawan Dimas F Roji Edhy Gazali Farid Hidayat Arfa Faris Farid R Fathur Hidayat, M. Firman Arif Ibrahim Ibrahim Ikhlas Abdullah Ilyas Mansur Irsat Maulana Jannah, Fitrial M I Mukhsen M. A. Fattah Mahadir, Mahadir Makmur Saini Maulana S. Usman, Achmad Miftahul Ahmad Misbahuddin Misbahuddin Muas M Muas Muchtar Muh Reza B Muhammad Arsyad Suyuti Muhammad Arsyad Suyuti Muhammad Arsyad Suyuti Muhammad Iswar Muhammad Iswar Muhira Dzar Faraby Nursyahbani P Parahdiba Sattar Sattar, Sattar Sitti Sahriana Syah Risal Syaharuddin Rasyid Syaharuddin Rasyid Syaharuddin Rasyid Syahrisal Syahrisal Tri Agus Susanto Usman Usman Uswatul Hasanah Mihdar Wahyono Patandean, Tri Yosrihard Basongan