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All Journal Rekayasa Mesin Media Teknika International Journal of Applied Sciences and Smart Technologies Jurnal Berdaya Mandiri Abdimas Altruis: Jurnal Pengabdian Kepada Masyarakat
Achilleus Hermawan Astyanto
Program Studi Teknik Mesin, Universitas Sanata Dharma
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Journal : International Journal of Applied Sciences and Smart Technologies

 1 
A STUDY OF STATICS ON DRIYARKARA ELECTRIC AUTOMOBILE CHASSIS PROTOTYPE Astyanto, Achilleus Hermawan; Yanto, Yana Resti; Adi, Adolf Baskoro Wisnu
International Journal of Applied Sciences and Smart Technologies Volume 02, Issue 01, Juni 2020
Publisher : Universitas Sanata Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24071/ijasst.v2i1.1933

Abstract

A design phase commonly initiates either a product invention or development. Before it continues to the fabrication steps, a modern computational, enabling a simulation study during the phase, often gives opportunity to develop its effectiveness and efficiency. Through several boundary conditions, some analytical and/or computational approaches could be determined. This paper aims to elaborate both static simulations and simple experimental tests on an electric automobile chassis prototype. An application based on finite element analysis was assessed to carry out both von Misses stresses and the nodal displacements regarding the construction and/or material strength to a static loads mode. Furthermore, an experimental based examination was also executed as a simple physical validation. The studies emphasize accepted results on von Misses stresses and nodal displacements for both simulation and experimental approaches.Keywords: Chassis Statics, von Misses stresses, nodal displacements, finite element
A Study of Statics on Driyarkara Electric Automobile Chassis Prototype Achilleus Hermawan Astyanto; Yana Resti Yanto; Adolf Baskoro Wisnu Adi
International Journal of Applied Sciences and Smart Technologies Volume 02, Issue 01, June 2020
Publisher : Universitas Sanata Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24071/ijasst.v2i1.1933

Abstract

A design phase commonly initiates either a product invention or development. Before it continues to the fabrication steps, a modern computational, enabling a simulation study during the phase, often gives opportunity to develop its effectiveness and efficiency. Through several boundary conditions, some analytical and/or computational approaches could be determined. This paper aims to elaborate both static simulations and simple experimental tests on an electric automobile chassis prototype. An application based on finite element analysis was assessed to carry out both von Misses stresses and the nodal displacements regarding the construction and/or material strength to a static loads mode. Furthermore, an experimental based examination was also executed as a simple physical validation. The studies emphasize accepted results on von Misses stresses and nodal displacements for both simulation and experimental approaches.Keywords: Chassis Statics, von Misses stresses, nodal displacements, finite element
A Brief on Optical-based Investigation towards The Interfacial Behaviors during High Viscous Liquid/Gas Countercurrent Two-Phase Flow in a Complex Conduit Representing 1/30 Down-Scaled of PWR Hot Leg Geometry Achilleus Hermawan Astyanto; Indarto Indarto; Deendarlianto Deendarlianto
International Journal of Applied Sciences and Smart Technologies Volume 05, Issue 01, June 2023
Publisher : Universitas Sanata Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24071/ijasst.v5i1.6302

Abstract

The present work briefly investigates liquid/gas countercurrent two-phase flow phenomena which can be specifically found in a mitigation during an accidental scenario in the operation of a nuclear reactor. A comprehensive knowledge on the corresponding phenomena is obviously important to avoid the failure on the cooling mechanism. Here, a pair of fluid containing high viscous liquid/gas flows through a complex conduit representing 1/30 scaled-down of PWR hot leg’s typical geometry. Furthermore, the flow structures were visually observed, while the film thicknesses are extracted by an image processing algorithm through the corresponding optical-tabulated data. The obtained results reveal that a rather sharp decrease in liquid film corresponds to the flow regime transition.Keywords: Countercurrent two-phase flow, liquid film thickness, high viscous liquid, complex conduit
Bubble flow configurations generated by ejector type bubble generator Catrawedarma, I Gusti Ngurah Bagus; Ton, Sefri; Pranowo, Dadang Dwi; Surahmanto, Fredy; Astyanto, Achilleus Hermawan
International Journal of Applied Sciences and Smart Technologies Volume 07, Issue 1, June 2025
Publisher : Universitas Sanata Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24071/ijasst.v7i1.10816

Abstract

Bubble flow configurations generated by an ejector bubble generator were captured using a high-speed video camera and extracted into several images. The air flow and nozzle diameter were varied during the test in ranges of 0.1-1.5 lpm and 1.17-3.5 mm, respectively. The results reveal that in general the bubble flow structure coming out from the bubble generator is divided into three regions, namely the entrance, bubble swarm, and bubble dispersed region. It is found that there is a higher time delay of bubble production when the air flow and the nozzle diameter decrease. On the other hand, the bubble production time is longer, if the air flow and the nozzle diameter increase.
The Effect of Flexible Resin and Standard Resins Mixtures Variations on Dimensional Accuracy Using SLA 3D Printing Dyaksa, Gilang Argya; Aji Nugraha, Felix Krisna; Astyanto, Achilleus Hermawan; Mardikus, Stefan; Seen, Michael; Rines, Rines; Lukiyanto, Yohanes Baptista; Purwadianto, Doddy; Winarbawa, Heryoga; Kusbandono, Wibowo; Sugiharto, Budi; Hermawan, Oktavianus Nekson; Putra, Mahendra Pratama
International Journal of Applied Sciences and Smart Technologies Volume 07, Issue 1, June 2025
Publisher : Universitas Sanata Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24071/ijasst.v7i1.12272

Abstract

The present study investigates the effect of the concentration of flexible resin on the dimensional accuracy of mixtures product manufactured by 3D printing using SLA technology. Specimens were designed and according to the ASTM D412 standard. Ten variations of resin mixtures were examined. The concentrations of the flexible resins were varied from 10% to 100%. Measurements of accuracy dimension were conducted on the fabricated specimens, and the average deviation was used to estimate the dimensional accuracy. The study reveals the least deviation in dimensions in the 10% flexible resin containing mixture and the highest in the 60% flexible resin containing mixture. The results explain the fabrication tendency of flexible resins in dimensional accuracy for 3D printing.
Co-Authors Adi, Adolf Baskoro Wisnu Adolf Baskoro Wisnu Adi Aji Nugraha, Felix Krisna Alapan, Rines Budi Setyahandana Budi Sugiharto Deendarlianto Doddy Purwadianto Felix Krisna Aji Nugraha Fredy Surahmanto Gilang Argya Dyaksa Hermawan, Oktavianus Nekson Heryoga Winarbawa IGNB. Catrawedarma Ikhsan, Alfikri Indarto Indarto Indarto Indarto Jaladri, Stefano Lukiyanto, Yohanes Baptista Medha, Akbar Yuga Adhikara Mustain, Fahra Diky Nugroho, Akhlisa Nadiantya Aji Pranowo, Dadang Dwi Putra, Mahendra Pratama Rasyidi, Muchsin Muzafar Rines, Rines Roshanti, Fatma Saleh, Dede Rafico Seen, Michael Stefan Mardikus Ton, Sefri Wibowo Kusbandono Yana Resti Yanto Yanto, Yana Resti Yoanita, Yulia Venti Yulia Venti Yoanita Yundari, Yundari Yusuf Rahman