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Rancang Bangun Alat Roll Press untuk Mengolah Batang Tanaman Rumput Payung (Cyperus Alternifolius) menjadi Serat Bahan Baku Komposit Murdiyanto, Danang; Redationo, Nereus Tugur
Jurnal Rekayasa Mesin Vol 6, No 2 (2015)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Composite material could be developed into new material that would be useful for many interests. Fiber as composite raw material must be given pretreatment to improve the quality of composite. In this research, raw material for the composite was umbrella grass (Cyperus Alternifolius). A tool was designed to facilitate the processes of rolling or pressing, or abbreviated as roll press. Indeed, the design of roll press was preceded by designing the construction section that involved shaft, transmission system, bearing, pulley belt, and driver motor to move the roll. Result of rolling must be suitable for processing umbrella grass into the fiber of composite raw material. Testing was conduced to examine the work of the tool against the stalk of umbrella grass. Two testing was considered. First was testing against the variation of loads, which involved 10kg, 12kg and 14kg. Second test was against the variation of roll rotation at 160rpm, 197rpm and 280 rpm. Result of both tests provided specific fiber derived from umbrella grass that would be compatible to be composite material. Some results of research were indicated. Main drive motor was Â½ PK with rotation (n1) = 1430rpm. Pulley diameter (d1) was 75mm. Reducer system was signified by n2 = 831rpm and d2 = 129mm, and if d3 = 59mm was used, the outcome was n4 = 160rpm with d4 = 307mm. In case of bearing, its sliding moment was 0.309N.mm and tangent force was 2.06N. The frame of roll press tool was designed at the dimension of length x wide x height = 600mm x 320mm x 1200mm. The best parameter was 160rpm with load force of 10kg. By taking account all these results, it could be said that the result of roll press processing had successfully produced the fiber from umbrella grass into the suitable raw material for the composite.

KARAKTERISTIK KOMPOSIT (KARBON DAN PEREKAT KERAMIK) UNTUK MENINGKATKAN PANAS Nereus Tugur Redationo
Conference on Innovation and Application of Science and Technology (CIASTECH) CIASTECH 2021 "Kesiapan Indonesia Dalam Menghadapi Krisis Energi Global"
Publisher : Universitas Widyagama Malang

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

Di dunia global saat ini ada masalah dengan ekonomi, energi dan lingkungan. Para ahli teknik di berbagai bidang keahlian berusaha menjawab permasalahan tersebut. Rekayasa material pada teknologi nano dan material pintar digunakan untuk meningkatkan efisiensi energi dan material yang ramah lingkungan. Perbandingan karbon dan keramik perekat (komposit): 70%:30% ; 60%:40% ; 50%:50 dalam berat (gram) sebagai sampel uji. Komposit dipanaskan di atas kompor listrik sebagai sumber panas. Serbuk karbon diperoleh dari proses pirolisis (suhu 1000oC) tempurung kelapa.Perhitungan konduktivitas termal dan laju panas digunakan sebagai dasar untuk menganalisis pengaruh rasio karbon dan perekat keramik. Hasil pengamatan, pengujian, perhitungan dan analisis data komposit ditemukan bahwa kandungan karbon yang tinggi meningkatkan panas. Variasi komposisi komposit 70% karbon dan 30% perekat keramik diperoleh nilai konduktivitas sebesar 116,23 W/m. K dan laju aliran panas 251,14 Watt/dtk. Komposisi komposit 60% karbon dan 40% perekat keramik diperoleh nilai konduktivitas 84,86 W/m.K dan laju alir panas 203,35 Watt/detik. Komposisi komposit 60% karbon dan 40% perekat keramik diperoleh nilai konduktivitas 65,28 W/m.K dan laju alir panas 140,72 Watt/detik.

PELATIHAN PENGGUNAAN PANEL SURYA SEBAGAI PENGHASIL LISTRIK RT 31 RW 6 PADANLADUNG WAGIR MALANG Nereus Tugur Redationo
Asawika : Media Sosialisasi Abdimas Widya Karya Vol 6 No 2 (2021): Jurnal Asawika Vol 6-2
Publisher : LPPM Unika Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37832/asawika.v6i2.74

Kegiatan pengabdian pada masyarakat berupa pelatihan dan pendampingan masyarakat RT 31 RW 06 Pandanlandung Wagir Malang. Masalah yang dihadapi masyarakat adalah bahwa kesadaran penggunaan energi alternatif terbarukan yang ramah lingkungan, kebutuhan listrik yang penting, biaya listrik yang mahal, dan lisrrik PLN sering mati. Kegiatan yang dilakukan ini adalah membuat Pembangkit Listrik Tenaga Surya (PLTS) sebagai penghasil listrik. Pelatihan ini memberikan pemahaman, sosialisasi, dan penyuluhan agar warga RT 31 bisa membuat dan menghasilkan energi listrik. Beberapa langkah yang dilakukan adalah sosialisasi/penyuluhan pembuatan PLTS serta Pembuatan, Pelatihan dan Pemahaman Pengoperasian dan Pemeliharaan. Sosialisai/penyuluhan PLTS berisi tentang: Fisika dasar, Matahari sebagai sumber energi, Pembangkit listrik tenaga surya (PLTS), Potensi PLTS di Indonesia, Aplikasi Teknologi PLTS: On-grid dan Off-grid dan Pedoman Perancangan PLTS. Pembuatan/perakitan PLTS ditunjukkan proses dan pemanfaatan penghasil listrik, langkah-langkah pengoperasian dan pemeliharaan. Prosedur pengoperasian PLTS yang dilakukan antara lain: persiapan pengoperasian, pemeriksaan awal, pemeriksaan tegangan keluaran, dan pengoperasian. Paska pengoperasian PLTS dilakukan pemeliharaan dengan memperhatikan prosedur yang dilakukan.Hasil luaran yang dilakukan adalah pertemuan, handout sosialisasi/penyuluhan PLTS, Panduan Pengoperasian dan Pemeliharaan dan pemanfaatan untuk penerangan Balai RT 31 RW 06 Pandanlandung Wagir Malang. Kata kunci: listrik, pelatihan, panel surya, Abstract The community service carrying out were training and assistancing in the use of solar panels as an electricity producer at RT 31, RW 6, Pandanlandung Vilalge, Wagir District of Malang. The problem faced by the community is the ignorance of the use of the renewable alternative energy that is environmentally friendly. The need of electricity is important, but the cost of it is expensive, while the electricity managed by PLN often goes out. The activity carried out was to make a Solar Power Plant (SPP) as a producer of electricity by giving counseling and training to the residents about the construction, operation, and mantainance of PV mini-grid. They were also given knowledge about basic physics, the sun as an enery source, solar power plants, SPP potentials in Indonesia and its applications: On-grid and Ogg-grid, as well as SPP Dsign Guidelines. The process and utilization of electricity generators steps were also shown tho them. The output of this activity was the handout for SPP socialization and maintanance guidelines and utilization for lighting. Key words: solar panels, electricity producers, training

CALCULATION ANALYSIS OF HEAT CONDUCTIVITY AND AVERAGE HEAT RATE IN CARBON COMPOSITES Bernardus Crisanto Putra Mbulu; Nereus Tugur Redationo; Febri Valen Herwinsha
Mechanical, Energy and Material (METAL) Vol. 1 No. 2 (2023): Desember: Mechanical, Energy and Material (METAL)
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/metal.v1i2.79

Carbon is the material most often used in the manufacture of composite materials. Carbon has a fairly high heat conductivity when it is in the form of graphite of 119-165 W.K/m. However, carbon is difficult to form, so another material that has formability is needed. This study used a mixture of carbon, ceramic and wood glue (PVAc) with variations in the main composition of 65% carbon for specimens 1,2,3 and 65% ceramic for specimens 4,5,6. Testing of all specimens was carried out by heating for 30 minutes, followed by temperature data collection every minute. The data that has been obtained is then calculated to determine the value of heat conductivity and average heat rate of each specimen. The highest value of heat conductivity and average heat rate was produced by specimen 2 with a composition of 65% carbon, 15% ceramic and 20% PVAc, where the value for heat conductivity was 95.346 W.K/m and for a heat rate of 206.7 Watt/second. Carbon can increase the conductivity value and heat rate, but if it is mixed with other materials it will certainly be affected, where ceramic affects the surface of the specimen which can cause cracks and reduces the value of the specimen's thermal resistance, while PVAc affects the reduction of surface cracks due to ceramic hardness when heated but can also become insulator in the specimen when bonded to the ceramic

IMPACT OF ANODE-CATHODE DISTANCE VARIATIONS ON NICKEL ELECTROPLATING OF AISI 1020 STEEL: HARDNESS AND CORROSION RATE ANALYSIS Nereus Tugur Redationo; Mannuel, Carlos Yoga; Murdiyanto, Danang
Mechanical, Energy and Material (METAL) Vol. 2 No. 1 (2024): Juni: Mechanical, Energy and Material (METAL)
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/metal.v2i1.90

Nickel electroplating on AISI 1020 steel is expected to increase hardness and enhance aesthetic appearance. Nickel plating on AISI 1020 steel is also anticipated to protect the steel surface and reduce the rate of corrosion. In the nickel electroplating process, researchers studied variations in the anode-cathode distance (5 cm, 10 cm, and 15 cm) and the use of an aerator. Data from Vickers hardness tests, corrosion rate tests, and microstructure photos were used as the basis for analyzing corrosion rates. The corrosion rate value without the aerator at an anode-cathode distance of 15 cm is 0.034 mm/year, at 10 cm is 0.019 mm/year, and at 5 cm is 0.015 mm/year. With the use of an aerator, the corrosion rate at an anode-cathode distance of 5 cm is 0.022 mm/year, at 10 cm is 0.011 mm/year, and at 15 cm is 0.008 mm/year. The Vickers hardness values without the aerator for these distances were 337.3 VHN, 190 VHN, and 286 VHN, respectively, while with the aerator, the hardness values were 301.67 VHN, 200.33 VHN, and 339 VHN.

MAINTENANCE ON SUGAR CANE MILL ROLLERS TO PREVENT WEAR AND DAMAGE Harsa Dhani; Jahu, Reinardi Oddilian; Redationo, Nereus Tugur
Mechanical, Energy and Material (METAL) Vol. 1 No. 2 (2023): Desember: Mechanical, Energy and Material (METAL)
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/metal.v1i2.91

One of the reasons the Sugar Factory failed to meet its sugar production target was due to damage to the machine components, particularly at the milling station, where the milling rollers are located. The milling rollers play a crucial role in extracting juice from sugar cane, separating the juice from the bagasse, and measuring the raw juice before it enters the purification process. This unit is designed to maximize raw juice yield while minimizing the amount of bagasse. The milling rollers are arranged in a triangular configuration of three mills, with a milling path between the front and rear rollers that can move forward and backward. Several common issues affect the milling rollers, including surface wear, damage from excessive loads, and wear from repeated friction between the rollers and the sugar cane. Sugar cane itself contributes to roller wear due to its composition, which includes water, sucrose, cellulose, lignin, hemicellulose, ash, and silica. These substances are highly corrosive, even to stainless steel, and act like abrasives against the rollers. The usual remedy at the factory is to weld stainless steel onto cast iron rollers. However, this method has only been moderately effective, as the rollers continue to experience wear after a short period. Based on field observations and literature reviews, some suggested solutions include more frequent cleaning and applying a tungsten coating to the roller surfaces.

ASSESSMENT OF MOBILE ROBOT LOAD-CARRYING POTENTIAL VIA DC GEARBOX MOTOR TORQUE Harsa Dhani; Redationo, Nereus Tugur; Dhancis, William
Mechanical, Energy and Material (METAL) Vol. 2 No. 1 (2024): Juni: Mechanical, Energy and Material (METAL)
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/metal.v2i1.93

The primary function of mobile robots is to transport various loads, including their own weight and additional cargo. Ensuring adequate torque in the wheel motors is crucial for effective load-bearing and movement. This study investigates the load-carrying capabilities of the TT DC gearbox motor, a popular and cost-effective choice for small robots. A mobile robot equipped with four TT DC gearbox motors and employing skid steering locomotion was constructed for this purpose. The robot featured a container designed to carry sand, and its load capacity was tested by gradually increasing the weight until the robot could no longer move. Experimental results showed that the maximum load the robot could carry on a flat surface was 4000 grams, which corresponds to 1000 grams per 5 cm diameter wheel, driven by a stall torque of 0.08336 Nm (0.85 kg.cm). This finding is consistent with the motor's specified stall torque of 0.8 kg.cm at 6V. These results suggest that the maximum load of a mobile robot can be predicted using the motor's stall torque specification and the wheel radius through the total tractive effort (TTE) formula. This study offers valuable insights into estimating the performance limits of DC gearbox motors used in driving mobile robots.

KINEMATIC ANALYSIS OF HORIZONTAL SEALER, VERTICAL SEALER, AND DRAWING ROLLER IN A TEMPEH PACKAGING MACHINE PROTOTYPE Harsa Dhani; Redationo, Nereus Tugur; Natanael, Abel
Mechanical, Energy and Material (METAL) Vol. 2 No. 1 (2024): Juni: Mechanical, Energy and Material (METAL)
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/metal.v2i1.94

The automatic packaging machine for tempeh improves both hygiene and efficiency in production. This Vertical Form Fill Seal model, equipped with a hole-punching mechanism, is examined in this study with a focus on the kinematics of its three key components: the horizontal sealer, vertical sealer, and drawing roller. The horizontal and vertical sealers are actuated by a single DC gear motor operating at 40 rpm, which manages their intermittent opening and closing. Additionally, a stepper motor running at 30 rpm controls the timing and drawing length of the plastic packaging, ensuring precise start and stop functions. The study's results revealed the following performance metrics for the machine's components: The horizontal sealer achieved a stroke distance of 62.4 mm, with the sealer operating at a maximum speed of 75.71 mm/s, and a total travel time of 1.65 seconds from closed to open position. For the vertical sealer, the stroke distance was 63 mm, with the sealer moving at maximum speed of 89.67 mm/s, and a travel time of 1.4 seconds from fully open to fully closed. The friction roller, driven by a stepper motor at 30 rpm, achieved a plastic withdrawal speed of 59.66 mm/s, allowing it to pull the plastic a maximum length of 167 mm within each 2.8-second cycle of the sealer components. It can be observed that continuous motor movement can be converted into intermittent back-and-forth motion using bar mechanisms, with the velocity at each position varying based on the length of the bars.

DIFFERENCES IN TEMPERATURE OF SOLAR COLLECTORS USING PAINT WITH A MIXTURE OF COCONUT SHELL CARBON AND PALM SHELL Nereus Tugur Redationo; Bernardus Crisanto Putra Mbulu; Febri Valen Herwinsha
Mechanical, Energy and Material (METAL) Vol. 1 No. 1 (2023): Juni: Mechanical, Energy and Material (METAL)
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/metal.v1i1.40

Coconut shell carbon and palm shell carbon which undergo a pyrolysis process at 1000oC were used as coatings for solar collectors. The two carbons were tested by SEM to determine their composition. Coconut shell carbon and palm shell carbon were mixed with paint as a coating on the aluminum surface of the solar collector. Aluminum alloy carbon paint was tested for temperature on the surface and bottom. The results of the SEM test, solar collector temperature test and discussion were the basis for knowing the carbon layer content of palm shells, coconut shells and without carbon layers. The results of the SEM test obtained the carbon content of palm shells 86.2% C and coconut shells 92.3% C. The results of the solar collector temperature test for 7 days, on the top surface of the palm shell was 3oC and the bottom surface was 0.9oC. High carbon content indicates a change in temperature in the solar collector.

2025 ALUMINUM COATING USING CARBON POWDER WITH TEMPERATURE OF 600°C, 700°C AND 800°C USING HEAT TREATMENT METHOD Antonius Prisma Jalu Permana; Nereus Tugur Redationo; Emilianus Chris Welafubun
Mechanical, Energy and Material (METAL) Vol. 1 No. 1 (2023): Juni: Mechanical, Energy and Material (METAL)
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/metal.v1i1.41

Aluminum coating in Indonesia is one of the business fields that has experienced an increase in development and rapid progress starting from the type of coating used to produce coatings that also vary. The purpose of this study was to determine the hot temperatures of 600°C, 700°C and 800°C in the aluminum coating process uses carbon powder and determines the effective hardness values at temperatures of 600°C, 700°C, and 800°C. Test result hardness shows that the highest average hardness value is at a temperature of 600°C of 68.6 Hv and the lowest average hardness value is at a temperature of 800°C which is equal to 51.7 Hv

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