Article Per Year (5 Year)
p-Index From 2021 - 2026
1.363
P-Index
This Author published in this journals
All Journal Signifikan : Jurnal Ilmu Ekonomi Transmisi Journal of Inovation and Technology of Agroindustry Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Proceeding Of The International Seminar and Conference 2015 Abdimas: Jurnal Pengabdian Masyarakat Universitas Merdeka Malang JURNAL FLYWHEEL Jurnal ABM Mengabdi Prosiding Simposium Nasional Rekayasa Aplikasi Perancangan dan Industri Nusantara of Engineering (NOE) RING Mechanical Engineering Jurnal Polimesin
Agus Suprapto
Universitas Merdeka Malang
Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences

Published : 23 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 23 Documents
Search

 1   2   3 
Pengaruh Variasi Larutan Sulfuric Acid dan Phosphoric Acid dengan Variasi Tegangan dan Waktu Anodizing terhadap Ketahanan Aus pada Aluminium 6061 Suprapto, Agus; Setyawan, Pungky Eka; Iswantoko, Agus
Prosiding Simposium Nasional Rekayasa Aplikasi Perancangan dan Industri 2019: Prosiding Simposium Nasional Rekayasa Aplikasi Perancangan dan Industri
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Material Aluminium mempunyai banyak kelebihan sehingga banyak digunakan di industry otomotif, industri pesawat terbang, industri manufaktur dan peralatan rumah tangga, namun aluminium mempunyai kelemahan dalam hal ketahanan aus sehingga komponen dari bahan aluminium tidak tahan gesek. Pengembangan metode untuk meningkatkan ketahanan aus dapat dilakukan dengan Anodizing. Tujuan penelitian ini untuk mengetahui, menganalisa pengaruh tegangan, waktu dan jenis larutan anodizing terhadap ketahanan aus. Metode yang dipakai dalam penelitian ini menggunakan proses Anodizing dengan variasi tegangan 15 V, 20 V, 25 V dan 30 V dan temperatur pencelupan 500C dengan variasi waktu pencelupan adalah 10, 20, 30 menit pada jenis larutan sulfuric acid, phosporic acid, 75 % sulfuric acid + 25 % phosporic acid, 50 % sulfuric acid + 50 % phosporic acid dan 25 % sulfuric acid + 75 % phosporic acid. Analisa pengujian ini dilakukan dengan metode analitis dan uji ketahanan aus. Temuan hasil penelitian: (1). Waktu anodizing semakin lama maka ketahanan ausnya semakin meningkat 156 %. (2). Tegangan anodizing semakin besar, ketahanan ausnya semakin meningkat 211 %. (3). Ketahanan aus hasil anodizing pada waktu pencelupan 20 menit dan tegangan 20 v dengan larutan sulfuric acid menghasilkan ketahanan aus tertinggi 24504, 42270 m/g, naiknya ketahanan aus 13 x lipat dibanding base metal.
Effect of seawater flow velocity in South Malang on the corrosion rate of low carbon steel with a corrosion coupon rack Suprapto, Agus; Irwandi, Jul Viansyah Dwiki; Jumiadi, Jumiadi; Tsamroh, Dewi Izzatus
Jurnal Polimesin Vol 22, No 2 (2024): April
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v22i2.4897

Abstract

Corrosion is a phenomenon of damage to metal that can be influenced by several factors, including environmental factors, namely pH, humidity, temperature, and impurity factors. Corrosion that occurs due to the flow of a fluid is known as erosion corrosion. One type of metal that is susceptible to corrosion is carbon steel. Carbon steel material is very commonly used in the industrial world. An application of carbon steel is in piping systems that transport fluids; thus, fluid flow velocity affects the corrosion resistance of carbon steel. This research aimed to determine the effect of seawater flow on the corrosion rate of low carbon steel (ST 37) with variations in seawater velocity. This research is a type of laboratory-scale experimental research using coupon rack corrosion test equipment. The variations in seawater velocity used are 0 L/min, 15 L/min, 20 L/min, and 25 L/min. Observations of each experiment were carried out every 6 and 12 hours. The corrosion rate was analyzed using the weight loss method, namely by calculating the initial and final weight of the specimen before and after the experiment. The results show that increasing seawater flow velocity also increases the corrosion rate on steel specimens, with the lowest corrosion rate at 10.262 mpy on specimens with a variation of 0 L/min, while the highest corrosion rate is 48.743 mpy on specimens with a variation of 25 L/min. It can be concluded that the velocity of the fluid flow and the type of particles contained in the flow affect the rate of erosion-corrosion. The higher the fluid flow velocity and the more abrasive the particles contained in the flow, the faster the rate of erosion-corrosion.
Structural Drivers of Risk-Taking in Indonesia’s Islamic Banks Suprapto, Agus; Al Arif, Mohammad Nur Rianto; Yama, Indo; Warninda, Titi Dewi
Signifikan: Jurnal Ilmu Ekonomi Vol. 15 No. 1 (2026)
Publisher : Faculty of Economic and Business, Universitas Islam Negeri Syarif Hidayatullah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/sjie.v15i1.50328

Abstract

Research Originality: This research is original in its focus on the long-run structural determinants of risk-taking in Indonesian Islamic banking. Research Objectives: The study aims to analyze how liquidity, profit-and-loss sharing (PLS), financing growth, financing-to-deposit ratio (FDR), economic growth, and inflation influence risk-taking behavior in Islamic banks. Research Methods: This study employs ARDL and Error Correction Model (ECM) techniques. The study investigates quarterly data from 2015 to 2024 to assess short-run and long-run relationships. The ECM framework provides insights into the adjustment mechanism toward equilibrium. Empirical Results: In the short run, liquidity, PLS, and financing growth significantly affect risk-taking. In the long run, liquidity has a significant negative effect, whereas PLS and Z-score exhibit a positive effect. Other variables are not statistically significant. The ECM confirms a strong adjustment mechanism, indicating that approximately 33.5% of short-run deviations are corrected toward long-run equilibrium each quarter. Implications: Policymakers and practitioners should design risk management strategies that differentiate between short-run operational adjustments and long-run macroeconomic anticipation. JEL Classification: C32, G21, G32, O16
Co-Authors Achmad Taufik Agus Iswantoko Andi Poerwanto Andrijono, Djoko Anindito Purnowidodo Anindito Purnowidodo Boge Triatmanto Darto, D Darto, Darto David Satya Hartanto Dewi Izzatus Tsamroh Djahilepang, Raywantus Baur Eko Yuni Prihantono Helmy Purwanto Irwandi, Jul Viansyah Dwiki Jumiadi, Jumiadi MARIA BINTANG Mochammad Rofieq Mohammad Nur Rianto Al Arif Noermijati Noermijati Poerwanto, Andi Pramita, Cynthia Rosa Pungky Eka Setyawan Riyanto, Obaja Eden Sentosa Rudi Ismanto Rudy Soenoko Rudy Soenoko Rusdijanto Sekiwa Sonief, Ahmad As'ad Suyatno, Agus Titi Dewi Warninda Wahyu Dirgantara Wahyu Wiyani Widyastuti, Ike Widyastuti, Ike Yama, Indo