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All Journal Jurnal Ilmiah Wahana Pendidikan Jurnal Konstruksi
Ramadhan, Umar
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Religion Civil Engineering, Building, Construction & Architecture Education Social Sciences Other

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Perbandingan Model Pemilihan Moda Feeder BMA Trans dan Mobil Sewa Kota Parepare ke Bandara Sultan Hasanuddin Ramadhan, Umar; Wakkang, Hamka; Misbahuddin, Misbahuddin
Jurnal Konstruksi Vol 22 No 2 (2024): Jurnal Konstruksi
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/konstruksi/v.22-2.1646

Abstract

Transportation concerns the movement of people and goods. Currently, the functions and types of transportation are developing according to existing needs and conditions. The aim of this research is to identify factors that influence feeder transportation on mode choice between BMA trans and rental cars in the city of Parepare to Sultan Hasanuddin airport. The results of the regression analysis are used to express probability using the binary logit regression modeling method. The mode selection model (feeder) was processed using STATA 16 software. Based on the factors that influence transportation users in choosing the mode to get to Sultan Hasanuddin Airport, the main factor for respondents who chose BMA Trans was based on the comfort factor of 48%. Meanwhile, the main factor for respondents in choosing a rental car mode in the city of Parepare to get to the airport is based on the travel time factor of 40%. and from the results of the modeling comparison between BMA Trans and rental cars, the probability increase for BMA Trans is greater in terms of cost, safety and comfort. while a rental car increases the probability in terms of travel time.
Analisis Pengaruh Variasi Media Pendingin Terhadap Sifat Mekanis Dan Struktur Mikro Sambungan Las Mig Gmaw Plat Baja SPHC-PO Ramadhan, Umar; Sugeng, Margono
Jurnal Ilmiah Wahana Pendidikan Vol 10 No 6 (2024): Jurnal Ilmiah Wahana Pendidikan
Publisher : Peneliti.net

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.10656939

Abstract

Welding doesn't just heat up two specific metal parts to melt the base metal and filler metal until they allow it to re-solidify. In producing a complete weld by adding additional material or electrodes when heated so that they have the desired strength. This study uses the Quenching heat treatment process which is used as the main factor and aims to improve the mechanical properties of SPHC-PO low carbon steel in MIG welding results with SAE 10W-40 oil cooling medium, fan blower, and open air. The results showed that the highest tensile test was found in an open air cooling medium valued at 48.15 kgf/mm² compared to a fan blower cooling medium and SAE 10W-40 oil. The highest hardness value was found in the SAE 10W-40 oil cooling medium with a hardness value of 334.4 HV compared to the fan blower cooling medium and open air. The results of observing the micro structure of the pearlite phase were mostly found in the fan blower cooling medium 37% compared to the SAE 10W-40 oil cooling medium and open air.
Co-Authors Misbahuddin Misbahuddin Sugeng, Margono Wakkang, Hamka