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All Journal Go Infotech: Jurnal Ilmiah STMIK AUB Potret Pemikiran Abdi Masya Mukaddimah: Jurnal Studi Islam AKADEMIK: Jurnal Mahasiswa Humanis Kawanua International Journal of Multicultural Studies Teknika Blend Sains Jurnal Teknik Jurnal Pengabdian Ahmad Yani Jurnal Teknik Indonesia AutoMech : Jurnal Teknik Mesin Go Infotech: Jurnal Ilmiah STMIK AUB Journal of Islamic Economics Studies and Practices (JIESP).
Purwanto, Andi
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Analisis Sifat Mekanik Pengelasan SMAW posisi 3G (vertical up) pada Baja Karbon Rendah St 37 Purwanto, Andi; Wijoyo, Wijoyo; Hartadi, Bagus Tiyan Tri
Go Infotech: Jurnal Ilmiah STMIK AUB Vol 31, No 2 (2025): December
Publisher : Sekolah Tinggi Manajemen Informatika dan Komputer AUB - Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36309/goi.v31i2.428

Abstract

Proses pengelasan merupakan salah satu metode penyambungan logam yang paling banyak digunakan dalam bidang konstruksi dan manufaktur. Salah satu proses pengelasan yang umum dipakai adalah Shielded Metal Arc Welding (SMAW), yang dikenal dengan kepraktisan serta kemampuannya menghasilkan sambungan yang kuat. Dalam pengelasan posisi 3G (vertical up), kualitas hasil las sangat dipengaruhi oleh berbagai faktor, di antaranya adalah jenis elektroda yang digunakan. Jenis elektroda memiliki peranan penting dalam menentukan sifat mekanis hasil las, seperti kekuatan tarik, kekerasan, dan ketangguhan sambungan. Tujuan dari penelitian ini untuk mengetahui variasi jenis elektroda pengelasan SMAW 3G Baja Karbon Rendah ST 37 terhadap kekuatan tarik, ketangguhan impact, kekerasan vikers dan struktur mikro. Metode eksperimen destruktif penelitian ini menggunakan variabel bebas variasi elektroda E6013, E7016 dan E7018, sedangkan variabel kontrol yaitu mesin Las SMAW, mesin UTM, mesin uji impact, mesin Vikers Hardness dan mikroskop. Material yang digunakan dalam penelitian ini adalah Baja Karbon Rendah ST 37. Material dilas dengan metode (SMAW) Shielded Metal Arc Welding posisi 3G (vertikal up).  Tahap pengujian untuk mengetahui kekuatan tarik mengacu pada ASTM E8/E8M-09 sedangkan untuk pengujian impak mengacu pada ASTM E23-07a  dan pengamatan foto struktur mikro dengan mikroskop. Analisa menghasilkan E7018 unggul dalam kekuatan tarik (465,75 MPa) dan ketangguhan impact (1,97 Joule/mm²), ideal untuk aplikasi dinamis. E7016 memiliki tegangan luluh tertinggi (338,25 MPa) dan elongasi terbesar (18,2%), mencerminkan keuletan dan ketahanan deformasi. E6013 unggul dalam kekerasan (190,95 HV) namun rendah dalam keuletan dan ketangguhan. Mikrostruktur E6013 merata tapi kurang mendukung sifat mekanik, E7016 halus dan seragam, sedangkan E7018 dominan ferrite di HAZ yang meningkatkan ketangguhan. Kesimpulannya, E7018 terbaik untuk beban dinamis, E7016 seimbang untuk struktural, dan E6013 cocok untuk aplikasi ringan dengan kebutuhan kekerasan tinggi.
Fair Pricing in Multicultural Societies: Ibn Taymiyah's Islamic Economic Principles for Inclusive Commerce Purwanto, Andi; Mugiyati, Mugiyati
Kawanua International Journal of Multicultural Studies Vol 6 No 1 (2025)
Publisher : State Islamic Institute of Manado (IAIN) Manado, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30984/kijms.v6i1.1233

Abstract

Islam was revealed by Allah SWT to regulate all forms of human behavior in relation to other humans to meet the needs of their lives in the world. This includes principles that govern economic turnover. In this case, one of the Islamic intellectuals, Ibn Taymiyah, has an interest in conceptualizing the economy through the Islamic religious approach. As for this study, using descriptive qualitative research, the researcher directly researched the books of Ibn Taimiyah and several other supporting literature. In this study, the researcher found that there are several concepts about Islamic economics, namely fair prices, and price regulations that have several clear divisions in accordance with the concept of Islamic economics according to Ibn Taymiyah
Faith-Based Digital Economy and Muslim Community Empowerment: A Socio-Religious Analysis of NUJEK as a Nahdlatul Ulama Affiliated Startup in Indonesia Purwanto, Andi; Bariroh, Arrizqah; Nurhayati, Nurhayati
Potret Pemikiran Vol 29, No 2 (2025)
Publisher : Institut Agama Islam Negeri (IAIN) Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30984/pp.v29i2.4143

Abstract

This study examines the socio-religious dimensions of faith-based digital startups in Indonesia by analyzing NUJEK, a transportation platform affiliated with Nahdlatul Ulama. The emergence of such platforms reflects the integration of Islamic values into digital economic practices, particularly in fostering Muslim community empowerment. This research aims to explore how NUJEK operationalizes Islamic economic principles and contributes to socio-religious cohesion within the Nahdliyin community. This study employs a qualitative approach combining a systematic literature review and semi-structured interviews with NUJEK users and driver-partners. The analysis is guided by Islamic economic frameworks, including maqashid al-shariah, ta’awun, and maslahah, as well as socio-religious perspectives on community-based economic practices. The findings reveal that NUJEK functions not only as a digital service provider but also as a medium of Islamic social enterprise that strengthens community solidarity and economic inclusion. The integration of religious values enhances trust, encourages mutual cooperation, and supports the empowerment of local Muslim communities. The findings reveal that NUJEK functions not only as a digital service provider but also as a medium of Islamic social enterprise that strengthens community solidarity and economic inclusion. The integration of religious values enhances trust, encourages mutual cooperation, and supports the empowerment of local Muslim communities. This study contributes to the discourse on Islamic digital economy by highlighting the role of faith-based startups as instruments of socio-religious transformation and community empowerment.
SISTEM INTERLOCK PADA MESIN HOT SAW DI AREA SECTION MILL PT. KRAKATAU BAJA KONSTRUKSI Purwanto, Andi; Fatkhurokhman, Mohammad
Teknika Vol 11 No 1 (2026): April 2026
Publisher : Pusat Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52561/teknika.v11i1.622

Abstract

This study discusses the implementation of an interlock system on the Hot Saw machine at the Section Mill area of PT. Krakatau Baja Konstruksi as an effort to improve operational safety and efficiency during the hot steel cutting process. The Hot Saw operates under extreme conditions of high temperature and speed, thus requiring a reliable safety mechanism to prevent workplace accidents and equipment damage. The research employed a descriptive-analytical method, which included literature review, field observation, system description, and descriptive analysis. Data were obtained through direct observation of the Hot Saw operation and its interlock components, such as limit sensors, safety switches, a control system based on Siemens S7-1500 PLC, and standard operational procedures. The findings indicate that the implemented interlock system ensures the machine operates only when all safety conditions are fulfilled and automatically stops the process if anomalies or system failures are detected. The integration of the alarm failure main drive saw feature also enhances operator responsiveness in identifying and addressing system malfunctions. Overall, the interlock system significantly contributes to improving work safety, machine reliability, and production continuity in the steel industry environment.
Co-Authors Achmad Nurhidayat Bariroh, Arrizqah Diama Rizky Septiawan Fajar Riyadin, Anang Fatkhurokhman, Mohammad Giyono Hartadi, Bagus Tiyan Tri Megasari, Aisyah Darti Mugiyati Nurhayati Nurhayati Nuryadi Nuryadi SUGIYANTO Sugiyanto - Vincentius, Vincentius Wijoyo Wijoyo Wijoyo