Article Per Year (5 Year)
p-Index From 2021 - 2026
2.293
P-Index
This Author published in this journals
All Journal Rekayasa Mesin Turbo : Jurnal Program Studi Teknik Mesin Jurnal Teknologi Terapan Otopro Madani : Indonesian Journal of Civil Society Quantum Teknika Community Empowerment Creative Research in Engineering (CERIE) Teknika ETAM: Jurnal Pengabdian kepada Masyarakat
Margono Margono
Sekolah Tinggi Teknologi Warga Surakarta
Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Other

Published : 13 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 13 Documents
Search

 1   2 
EFFECT OF SECTION THICKNESS ON NODULAR GRAPHITE FORMATION AND MECHANICAL PROPERTIES OF DUCTILE CAST IRON Moch Chamim; Edi Sarwono; Haikal Haikal; Margono Margono
Otopro Vol 21 No 2 May 2026
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/otopro.v21n2.p43-50

Abstract

This study investigates the effect of section thickness on the microstructure and mechanical response of Ductile Cast Iron (DCI) using specimens with thicknesses of specimen 20, 40, and 60 mm. Optical microscopy reveals a ferrite-pearlite matrix with spherical graphite, where the graphite nodules exhibit a tendency toward larger size and greater heterogeneity with increasing section thickness. The measured nodule diameters are approximately 17-20 µm (20 mm), 21-22 µm (40 mm), and 15-26 µm (60 mm), indicating thickness-driven changes in solidification/cooling conditions that promote graphite hardening in thicker sections. Mechanical testing shows a consistent decrease in hardness with increasing thickness: 246.8 VHN (specimen 20 mm), 226.75 VHN (specimen 40 mm), and 204.8 VHN (specimen 60 mm). Impact test results show a non-monotonic trend, increasing from 0.02 (specimen 20 mm) to 0.049 (specimen 40 mm) and slightly decreasing to 0.045 (specimen 60 mm). The highest impact value at specimen 40 mm indicates an optimal balance between matrix hardness and toughness at intermediate thicknesses, while the slight decrease at specimen 60 mm despite the lower hardness may be related to increased graphite size heterogeneity and microstructural nonuniformity in thicker sections. Overall, thickness significantly affects graphite morphology and the hardness toughness trade off in DCI, with 40 mm sections providing the most favorable toughness in this data set.
Peningkatan Kapasitas Produksi Bata Merah Melalui Penggunaan Mesin Cetak Bata Merah Model Extruder Dwi Sahidin; Nugroho Tri Atmoko; Septi Purwaningsih; Tri Widodo Besar Riyadi; Margono Margono; Early Yanuar Ayuningtyas; Refly Yuliana
Madani : Indonesian Journal of Civil Society Vol. 8 No. 1 (2026): Madani : Februari 2026
Publisher : Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/madani.v8i1.2992

Abstract

 This Community Service Program aims to enhance the production capacity of red bricks at UMKM Putra Mandiri, located in Mulyadadi Village, Cipari District, Cilacap Regency, through the implementation of a red brick extruder machine. The partner’s main issue was the manual production process, which limited production capacity and resulted in inconsistent brick quality. The program activities included field observations, partner discussions, training sessions, and mentoring on machine operation and maintenance. The results showed that using the extruder machine significantly increased production capacity from 100 pcs/hour to 750 pcs/hour, indicating a 750% improvement compared to manual methods. Furthermore, the  produced bricks demonstrated better uniformity, density, and strength, while reducing production time and labor intensity. The adoption of this appropriate technology not only improved productivity and competitiveness but also strengthened the partner’s independence in business operations. The implication of this activity is that technological transfer through community service programs can provide sustainable impacts on local economic development by promoting innovation, efficiency, and self-reliance among small enterprises. 
Analisis Mikrostruktur dan Performa Aus Baja S45C Dengan Perlakuan Panas pada Suhu 700 °C, 750 °C, dan 800 °C Agung Supriyanto; Agus Jamaldi; Margono Margono; Budi Nugroho; Afif Faishal; Fedrian Ahmadthur Rengga
TURBO [Tulisan Riset Berbasis Online] Vol 14 No 2 (2025): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v14i2.4561

Abstract

This study aims to evaluate the effect of heat treatment with varying temperatures on the hardness, microstructure, and wear resistance of S45C carbon steel. Specimens were heated at temperatures of 700 °C, 750 °C, and 800 °C for 30 minutes, then rapidly cooled using a saltwater medium. Test results indicate that increasing the heat treatment temperature significantly enhances surface hardness, with the highest value recorded at 800 °C. Microstructural observations reveal that martensite phase dominates at high temperatures, contributing to increased hardness and resistance to deformation caused by friction. Wear testing showed a negative correlation between hardness and wear volume, with specimens of higher hardness exhibiting narrower and smoother wear marks. These findings confirm that heat treatment temperature control is a key factor in optimising the surface performance of S45C steel for engineering applications requiring high wear resistance.
Co-Authors Afif Faishal Agung Supriyanto Agung Supriyanto Agus Jamaldi Amarulloh, Amarulloh Atmoko, Nugroho Tri Bambang Hari Priyambodo Bambang Margono Budi Nugroho Chamim, Moch. Dwi Sahidin Early Yanuar Ayuningtyas Edi Sarwono Elkana Bilak Lopo Fatimah Nur Hidayah Fedrian Ahmadthur Rengga Haikal Haikal Hendi Lilih Wijayanto Kacuk Cikal Nugroho Komar Roni Nugroho Tri Atmoko Petrus Heru Sudargo Refly Yuliana Rizqi Ilmal Yaqin Septi Purwaningsih Suhartoyo Suhartoyo Tri Widodo Besar Riyadi Yanti Pasmawati