Majalah Ilmiah Pengkajian Industri; Journal of Industrial Research and Innovation

Crashworthiness Analysis of the Impact Modules of Indonesian High-Speed Train Considering EN 15227

2023-12-13T14:29:51+07:00

A crashworthiness structure is being developed for the passive safety system of the Indonesian High-speed Train design. It is made up of an anti-climber, a crash buffer, and a honeycomb in sequential arrangement. The issue addressed in this research is the need for thorough verification of the design of impact modules and the supporting frame for compliance with the EN 15227 standard. The finite element method approach is used to analyze the feasibility of a collision in a high-speed train’s passive safety system. The geometry of the finite element model is constructed as a surface element and refers to the model designed by the National Research and Innovation Agency (BRIN) and the Indonesian Railways Company (PT. INKA). In accordance with the train design plan, aluminum 6005A-T6 is implemented. Simulations were conducted at initial velocities of 10 m/s using the LS-DYNA solver. The time interval during which the velocity changes is considered the time when the kinetic energy of the collision is completely absorbed. The simulation results indicate that the kinetic energy can be effectively absorbed by the crash module and the mask-of-car frame, as long as the initial contact between the trains occurs at the anti-climber. The impact kinetic energy stored in the crash buffer system is 63%, equivalent to 959 kJ, while the remaining 37%, amounting to 561 kJ, is absorbed by the cab and honeycomb frame structure. Thus, the crash structure being developed complies with the crashworthiness standard.

A Gravimetric Methodology for Measuring Fuel Mass Flow Rate in a No-Load Engine Operating at Various RPMs

2023-12-13T14:33:33+07:00

The pursuit of performance tests that are both cost-effective and equipped with state-of-the-art technology stands as a vital objective. Among these tests, fuel consumption assessments emerge as crucial parameters in engine and vehicle evaluations. The main aim of this study is to establish a gravimetric methodology for quantifying fuel usage. The objective is to develop a methodology that is both uncomplicated and simple to use, while simultaneously ensuring the instrument's mobility. This study involves experiments on engines using B30 fuel. Recorded data is analyzed and compared with the flow meter. The research focuses on the KUBOTA D722 engine's operation without load across various RPM settings. The comparative results reveal disparities in measurement outcomes, with variations of 0,66 g/s, 0,93 g/s, and 0,31 g/s observed for engine rotation speeds of 1500, 1900, and 2200 RPM, respectively.

A Parametric Study of Torrefaction Technology of Agricultural Residues in Indonesia

2023-12-24T21:31:23+07:00

Enhancing the value of biomass residues holds promise for mitigating open burning. However, biomass utilization as an energy feedstock encounters its own set of challenges owing to inherent properties. To address these concerns, torrefaction, an essential thermal pretreatment process for carbonaceous materials, emerges as a viable solution. In a laboratory experiment conducted in a static tube reactor, torrefaction was investigated at temperatures of 250°C for 45 minutes and 300°C for 5 minutes. The findings revealed that rice straw, corncob, and cassava stalk exhibit properties exceptionally suited for utilization as energy feedstock. Notably, at 300°C corncob attains a carbon content of 58.10%, a fixed carbon content of 34.35%, and a calorific value of 22.46 MJ/kg.

Preface Majalah Ilmiah Pengkajian Industri Vol 17 No. 2: September 2023

2023-12-22T15:27:48+07:00