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All Journal Natural B Praxis : Jurnal Sains, Teknologi, Masyarakat dan Jejaring ASAWIKA: Media Sosialisasi Abdimas Widya Karya METAL Proceeding of The International Conference on Mathematical Sciences, Natural Sciences, and Computing
Bernardus Crisanto Putra Mbulu
Universitas Katolik Widya Karya Malang
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Journal : METAL

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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

Abstract

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
CALCULATION OF POWER REQUIREMENTS TO DRIVE THE BELT WINDER PROTOTYPE PRINTED BY A 3D PRINTER Danang Murdiyanto; Bernardus Crisanto Putra Mbulu; Iga Yuswantoro
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.v1i2.88

Abstract

The industrial world in the field of medium and large scale construction and maintenance from both various industrial sectors needs to improve procedures with technology that is efficient, safe, can reduce costs, and can minimize process time. Based on the experience of researchers in the agricultural machinery industry when installing and replacing belts on conveyors is done manually, namely by moving the belt using a forklift and according to researchers it is less efficient. The design of this prototype belt winder is to present the actual performance mechanism of the belt winder machine. The method used is to calculate the prototype design, design using 3d software, then the model is printed using a 3d printer. The last process carried out by researchers is assembling each component, then conducting trials and observing the performance mechanism of the prototype belt winder. The results obtained are able to roll a 1030 mm long belt with the required motor power of 5.31 Watt.
PROTOTYPE DESIGN OF PLATE ROLLER MACHINE Danang Murdiyanto; Bernardus Crisanto Putra Mbulu; Bernadus Daniel Wahyu Prasetya
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.v1i1.39

Abstract

Current development of manufacturing industry is expected to have a good and innovative system. Machine planning is a very important part in determining the manufacturing process. Machine prototypes are very important in model and product development, because they can help a designer to evaluate processes, machine performance, and product developments. In this study, a prototype design of a plate roll machine was made. One of the manufacturing processes that is widely used in companies and home industries is the rolling process. Plate roll machine prototype design to find suitable dimensions. The plate roll machine prototype will be made using a 3D printing machine with Polylatic Acid (PLA) material. The prototype plate rolling machine uses a synchronous electric motor type 60KTYZ which has a power of 14 watts and a rotation of 15 rpm. The prototype of this plate rolling machine was tested using aluminum plate as raw material with a length of 820 mm, a width of 10 mm and a thickness of 2 mm. The test results with a given compressive force of 75 N, namely a deflection of 9 mm with a rolling speed of 0.02 m/s. In the equilibrium test, it is produced by calculating structural statics that the action forces and reaction forces are proven to be balanced.
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

Abstract

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.
Co-Authors Anna Catharina Sri Purna Suswati Antonius Prisma Jalu Permana Bernadus Daniel Wahyu Prasetya Donysius Dwi Hercahyo Febri Valen Herwinsha Iga Yuswantoro Murdiyanto, Danang Redationo, Nereus Tugur