Article Per Year (5 Year)
p-Index From 2021 - 2026
0.408
P-Index
This Author published in this journals
All Journal SAINSTEK Journal of Integrative Sustainability and Ethics
Pertiwi, Eka
Unknown Affiliation
Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Engineering Materials Science & Nanotechnology Mechanical Engineering

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

Found 2 Documents
Search

 1 
Sifat Mekanik Sambungan Las Butt Joint Pada Plat ASTM A36 Menggunakan Las GTAW Junaidi, Abdul Khair; Isra, Adi; Pertiwi, Eka; Rinaldi; Weriono
SAINSTEK Vol. 13 No. 1 (2025)
Publisher : Sekolah Tinggi Teknologi Pekanbaru

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35583/js.v13i1.296

Abstract

Penelitian ini bertujuan untuk menganalisis sifat mekanik sambungan las butt joint pada plat ASTM A36 menggunakan metode pengelasan Gas Tungsten Arc Welding (GTAW). Hasil pengujian menunjukkan bahwa kekuatan tarik maksimum pada spesimen 1 (40 A) lebih tinggi dibandingkan spesimen 2 (60 A), dengan nilai 440.0 MPa dan strain 18.5%, sedangkan spesimen 2 memiliki nilai kekuatan tarik 396.7 MPa dan strain 12.95%. Pada pengujian tekuk, spesimen 2 (60 A) memiliki kekuatan tertinggi sebesar 5.830,482 N dengan deformasi 14,8 mm, lebih tinggi dibandingkan spesimen 1 yang memiliki kekuatan 4.533,510 N dengan deformasi 13,3 mm. Pengujian kekerasan menunjukkan bahwa spesimen 2 (60 A) memiliki nilai kekerasan rata-rata lebih tinggi (48,2 HRA) dibandingkan spesimen 1 (45,8 HRA), terutama pada daerah HAZ. Struktur mikro spesimen 1 didominasi oleh ferrit dan perlit dengan lebih banyak bainit dan martensit karena proses pendinginan yang lebih cepat, sementara spesimen 2 didominasi oleh ferrit dan perlit dengan sedikit bainit dan hampir tanpa martensit akibat pendinginan yang lebih lambat. Hasil penelitian ini menunjukkan bahwa arus pengelasan yang lebih rendah (40 A) menghasilkan kekuatan tarik yang lebih tinggi, sementara arus yang lebih tinggi (60 A) meningkatkan kekuatan tekuk dan kekerasan permukaan, jadi untuk material ASTM A36 dengan menggunakan sambungan butt joint lebih baik menggunakan arus 60 A.
Mapping the Landscape of Fatwa Research in ESG and Sustainability: A Bibliometric Analysis (2003–2025) Pertiwi, Eka; Nurhayati, Nurhayati
Journal of Integrative Sustainability and Ethics Vol. 1 No. 1 (2025): June
Publisher : Master and Doctoral Program in Islamic Economics, Faculty of Islamic Economics and Business, Sunan Ampel State Islamic University, Surabaya Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15642/jibec.2025.1.1.25-55

Abstract

Despite the increasing relevance of Environmental, Social, and Governance (ESG) frameworks in global finance, the role of Islamic legal instruments, particularly fatwas, in advancing sustainability remains underexplored. This study addresses this gap by conducting a bibliometric analysis of 580 scholarly publications from 2003 to 2025, focusing on fatwas related to ESG and sustainability. Using the Publish or Perish software and VOSviewer for data extraction and visualization, the research identifies key thematic clusters, leading institutions, collaborative networks, and geographic trends within the discourse. Results show four dominant clusters: ESG governance, Islamic financial instruments, green investment, and social sustainability. Malaysia emerges as the central hub for fatwa-based ESG practices, with institutions like IIUM and ISRA playing pivotal roles. However, the findings also highlight critical gaps, including the marginal treatment of social ESG dimensions, limited integration with Sustainable Development Goals (SDGs), regional concentration, and a lack of empirical validation. This study contributes to the fields of Islamic economics and business by framing fatwas not only as religious-legal tools but also as epistemic frameworks that shape ethical governance and sustainability practices. It offers a roadmap for future interdisciplinary research, policy innovation, and institutional development to bridge Islamic ethical principles with global ESG standards and practices.
Co-Authors Abdul Khair Junaidi Isra, Adi Nurhayati, Nurhayati Rinaldi Weriono