Article Per Year (5 Year)
p-Index From 2020 - 2025
0.444
P-Index
This Author published in this journals
All Journal Journal of Engineering and Technological Sciences Mesin
Mahyuddin, Andi Isra
Faculty Of Mechanical And Aerospace Engineering, Institut Teknologi Bandung, Jalan Ganesa 10, Bandung 41032, Indonesia
Engineering Mechanical Engineering

Published : 8 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 4 Documents
Search
Journal : Journal of Engineering and Technological Sciences

 1 
Head Injury Analysis of Vehicle Occupant in Frontal Crash Simulation: Case Study of ITB’s Formula SAE Race Car Mihradi, Sandro; Golfianto, Hari; Mahyuddin, Andi Isra; Dirgantara, Tatacipta
Journal of Engineering and Technological Sciences Vol 49, No 4 (2017)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (482.958 KB) | DOI: 10.5614/j.eng.technol.sci.2017.49.4.8

Abstract

In the present study, frontal crash simulations were conducted to determine the effect of various car speeds against the Head Injury Criterion (HIC), a measure of the likelihood of head injury arising from impact. The frontal impact safety of ITB’s formula SAE race car designed by students was evaluated as a case study. LS-DYNA®, an explicit finite element code for non-linear dynamic analysis was utilized in the analysis. To analyze head injury, a two-step simulation was conducted. In the first step, a full-frontal barrier test was simulated without incorporating a dummy inside the car. The output was the deceleration data of the car, which was used as input in the second step, a sled test simulation. In the sled test, only the cockpit and dummy were modeled. The effect of deceleration to the head of the dummy was then evaluated. The results show that HIC values at an impact speed of 7 m/s (25 km/h) to 11 m/s (40 km/h) were below the safe limit and still in the safe zone. However, the HIC values will exceed the safe limit when the speed of impact is the same as or greater than 12 m/s (43 km/h).
Anatomy of Injury Severity and Fatality in Indonesian Traffic Accidents Santosa, Sigit Puji; Mahyuddin, Andi Isra; Sunoto, Febrianto Guntur
Journal of Engineering and Technological Sciences Vol 49, No 3 (2017)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (83.472 KB) | DOI: 10.5614/j.eng.technol.sci.2017.49.3.9

Abstract

There has been a steady increase in traffic accidents with major injuries in Indonesia over the last 10 years, especially those with a score higher than 3 on the Abbreviated Injury Scale (AIS). Frontal, side, and rear collisions, as well as pedestrian impact are modes of accident that contribute to the majority of injuries or fatalities. Based on age classification, the 16-30 age group are the most vulnerable road users in Indonesia. Traffic accidents in Indonesia are dominated by motorcycles, which also contribute the highest portion of fatalities and major injuries (AIS score > 3). Most traffic accidents can be attributed to human, road and environmental, or vehicle factors. Careless driving and unruly behavior of the driver are the main causes of accidents in Indonesia. Statistical data and analyses on traffic accidents in Indonesia can be used to develop a comprehensive strategy and policy to reduce the number of fatalities and severe injuries of road accidents in Indonesia. There is a need to balance the high growth of motor vehicles with adequate infrastructure. Good driver education as well as vehicle safety and crashworthiness regulations are required in order to reduce traffic accident fatalities.
Redesign of a Biomechanical Energy Regeneration-based Robotic Ankle Prosthesis using Indonesian Gait Data Edgar Buwana Sutawika; I. Indrawanto; F. Ferryanto; Sandro Mihradi; Andi Isra Mahyuddin
Journal of Engineering and Technological Sciences Vol. 53 No. 4 (2021)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2021.53.4.6

Abstract

In this research, the robotic ankle design from Arizona State University (ASU) known as SPARKy was redesigned to accommodate the specific needs of Indonesian people. Most active prosthetic legs are designed based on gait parameters for people from Western countries, which may differ for people from other cultures that have a different anthropometry and economic background. Indonesians have smaller actuating power characteristics compared to people from Western cultures due to their smaller average weight and body height. Thus, the applied design strategy took advantage of a biomechanical energy regeneration scheme to reduce the actuator input power requirement and the relatively smaller mechanical power of the typical Indonesian ankle to create a potentially affordable robotic ankle with a smaller actuator that meets the technical specifications. The specifications of the powered prosthetic ankle were determined through the same methods used by SPARKy. Only one low-level control system, to actuate normal walking, was designed and tested on a fully assembled robotic ankle. The test results indicated a promising low-level control, where the robotic ankle can follow the predetermined trajectory required to actuate normal walking based on Indonesian gait data.
Bus Superstructure Reinforcement for Safety Improvement against Rollover Accidents Sandro Mihradi; Andhika Dhaniswara; Satrio Wicaksono; Andi Isra Mahyuddin
Journal of Engineering and Technological Sciences Vol. 54 No. 2 (2022)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2022.54.2.6

Abstract

Bus rollover is considered the most dangerous road accident. To ensure bus safety against rollover accidents, the bus superstructure must conform to safety standards, one of which is UNR66. Unfortunately, in Indonesia, the increase in the number of buses has not been followed by bus safety improvement. In this paper, a numerical study on superstructure reinforcement to improve bus safety against rollover is presented. To reduce computational time, a simplified bus superstructure model comprising only three middle bays was used instead of a full bus model. Several superstructure reinforcements were implemented and their effectiveness in improving bus safety against rollover accidents was investigated. Among all reinforcements that were investigated, the most effective one was enhanced reinforcement by adding a connection between the seat structures and the side pillars. This modification yielded excellent results, as the modified superstructure showed a very significant improvement over a superstructure without reinforcement and it met the UNR66 residual space safety criterion.
Co-Authors A.A. Ketut Agung Cahyawan W Ahmarudin, M Andhika Dhaniswara Boestaman, Refrizal Edgar Buwana Sutawika F. Ferryanto Ferryanto, F Golfianto, Hari Herman, Indria I. Indrawanto Mihradi, Sandro Nurhadi, Indra Santosa, Sigit Puji Satrio Wicaksono Suharto, Djoko Sunoto, Febrianto Guntur Tatacipta Dirgantara, Tatacipta