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AN IMPROVEMENT OF ARJUNA 1.0 CONVEYOR SYSTEM FOR 3D IRRADIATION Saefurrochman, Saefurrochman; Purwanto, Agus Tri; Adabiah, Suhadah Rabi'atul; Sukaryono, Sukaryono; Setiaji, Galih; Arthanto, Dwi Handoko; Anggraeni, Karina; Rachmawati, Isti Dian; Dwiatmaja, Agus; Wijono, Wijono; Nuraini, Elin; Andriyanti, Wiwien; Darsono, Darsono; Adjie, Andreas Bimo Putro
GANENDRA Majalah IPTEK Nuklir Volume 26 Nomor 1, 2023
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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/gnd.2023.6826

Abstract

An improved design of the conveyor system of Arjuna 1.0 electron accelerator for 3D object irradiation has been done. The penetration of low energy electrons is less than 1 cm in the surface, causing a challenge for the irradiation process for sterilization of 3D objects. We design a conveyor that can be rotated 360o to irradiate objects evenly. The dimension of this conveyor is 1750 x 600 x 800 mm and the maximum diameter of the object is 7 cm. Based on the Frame Bending Stress analysis to calculate the strength of the conveyor frame, it is shown that the maximum displacement is only 0.029 mm, which is very small so it will cause no disturbance to power transfer from the motor to the conveyor. The normal stress (Smax) is 3.926 MPa and the bending stress for Smax (Mx) and Smax (My), are 2.391 MPa and 3.925 MPa respectively. We also calculate the stress analysis of the 3 mm-thickness of the motor mount and found that the Von-Misses Stress, first, and third Principal Stress are 4.425 MPa, 5.01 MPa, and 1.95 MPa respectively. These results confirm that the design and the material used for the conveyor are safe because the stress is very low than the material’s yield strength which is 207 MPa. The power needed for this conveyor is 0.01724 kW, with a maximum speed is 880 rpm. The new model of 3D conveyor has been constructed and can be implemented to ARJUNA 1.0 to irradiate objects on all its surfaces
THE EFFECT OF THE DC-SPUTTERING PROCESS ON CHANGES IN THE HARDNESS VALUE AND ELEMENTS COMPOSITION OF BIOCOMPATIBLE STAINLESS STEEL 316L MATERIAL Sahabudin, Nuha Nazilah; Mukaromah, Uli Aprilia; Andriyanti, Wiwien; Sutanto, Heri
GANENDRA Majalah IPTEK Nuklir Volume 26 Nomor 1, 2023
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Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/gnd.2023.6834

Abstract

Titanium Dioxide (TiO2) thin films have intriguing optical, photocatalytic, and electrical properties and have been investigated for various applications, including solar cells, biomaterials, corrosion-resistant materials, and gas sensor. In this study, TiO2 thin films were deposited on the surface of 316L Stainless Steel  to improve its mechanical properties as an implant material. The deposition method used was DC sputtering with variations in deposition times of 30, 60, 90, 120, and 150 minutes. Vickers hardness test and SEM-EDX characterization were carried out to determine the hardness value, elemental composition, and thickness of the TiO2 thin film formed. Based on these tests, it was discovered that the optimal hardness value of316L stainless Steel  material was attained at a deposition period of 90 minutes with a hardness value of 170.10 VHN, and the average thickness of the layer formed was ± 119.02 μm.
Co-Authors Adabiah, Suhadah Rabi'atul Adjie, Andreas Bimo Putro Anggraeni, Karina Arthanto, Dwi Handoko Darsono Darsono Dwiatmaja, Agus Elin Nuraini Galih Setiaji Heri Sutanto Mukaromah, Uli Aprilia Purwanto, Agus Tri Rachmawati, Isti Dian Saefurrochman Saefurrochman Sahabudin, Nuha Nazilah Sukaryono Sukaryono Wijono