Article Per Year (5 Year)
p-Index From 2021 - 2026
0.444
P-Index
This Author published in this journals
All Journal Dinamika Teknik Mesin : Jurnal Keilmuan dan Terapan Teknik Mesin
A.D. Catur
Universitas Mataram
Aerospace Engineering Automotive Engineering Mechanical Engineering Physics

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Pengukuran waktu standar pembuatan produk sampan komposit sandwich untuk menentukan biaya poduksi I.M. Suartika; A.D. Catur; M. Mirmanto
Dinamika Teknik Mesin Vol 11, No 1 (2021): Dinamika Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (811.92 KB) | DOI: 10.29303/dtm.v11i1.416

Abstract

In the efforts to develop the boat of composite sandwichto overcome the scarcity of wood as a boat material, thedetermination of production costs becomes veryimportant to be studied. The purpose of this study is toconduct a study related to the amount and time requiredin the completion of product units with the stop watchtime study method. The results of the time study wereused to determine the cost or wages of labor in theproduction of the boat composite sandwiches. So that allcomponents of these costs will later determine thefeasibility of production of the boat composite sandwichproducts. Based on the results of the measurement ofwork time study known standard time production of theboat composite sandwich with two people labor and shiftwork 8 hours / day is 34 hours (equivalent to 5 days) andproduction capability 5 units / month. The results ofresearch related to production process costs are knownfixed costs (FC )= Rp. 1,288,655 and variable costs /units (c) = Rp. 2,664,333. By conducting break-evenpoint analysis obtained minimum production units permonth that can be produced by setting the selling price( ) of the product based on profit margin 5%, 10%,15%, 20%, 25%, i.e consecutively; 10 units/month, 5units/month, 4 units/month, 3 units/month, 2 units/month.
Numerical study of exhaust flow behavior in a calcium carbide waste adsorber for two-wheel vehicle applications H.S. Tira; Y.A. Padang; N. Kaliwantoro; A.D. Catur; I.G.N.K. Yudhyadi; S. Rahman
Dinamika Teknik Mesin Vol 16, No 1 (2026): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v16i1.1247

Abstract

Calcium carbide waste has demonstrated potential as an adsorber material for motorcycle exhaust emission control; however, the internal flow and thermal mechanisms governing its performance remain unclear. This study presents a computational fluid dynamics (CFD) analysis of exhaust gas flow through a calcium carbide waste adsorber to elucidate pressure, velocity, temperature, and turbulence characteristics. Simulations were conducted for adsorber lengths of 50, 100, and 150 mm, with the 150 mm configuration selected as a representative case due to similar overall trends. The results indicate a gradual pressure reduction along the exhaust system, flow acceleration within the adsorber due to cross-sectional constriction, and non-uniform temperature distribution influenced by asymmetric flow patterns. Turbulence kinetic energy increases upon gas entry into the adsorber and varies with adsorber length, highlighting the role of geometry in flow mixing and turbulence dissipation. These findings provide physical insight into the mechanisms underlying the emission reduction observed in previous experimental studies.
Co-Authors H.S. Tira I.G.N.K. Yudhyadi I.M. Suartika M. Mirmanto, M. N. Kaliwantoro S. Rahman Y.A. Padang