Article Per Year (5 Year)
p-Index From 2021 - 2026
0.444
P-Index
This Author published in this journals
All Journal Jurnal Teknik Journal of Education and Teaching Learning
Wulandari, Amelia Dini
Unknown Affiliation
Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Industrial & Manufacturing Engineering Mechanical Engineering Other

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

Found 2 Documents
Search

 1 
Enhancing Heat Treatment Learning for Mechanical Engineering Students: A Comparative Study of Corrosion Inhibitor Effectiveness on Aluminium Protection Saifuddin Karim; Pradani, Yayi Febdia; Pratomo, Danang Yugo; Muhtarom, Imam; Widowati, Tamara Rahma; Wahyudi, Dian Julianto; Wulandari, Amelia Dini; Subekhi, Prido
Jurnal Teknik Vol 23 No 2 (2025): Jurnal Teknik
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37031/jt.v23i2.650

Abstract

Corrosion still remains a serious problem in the application of aluminum alloys, such as Aluminum 6061, which is one of the most widely used aluminum alloys in industries because of its high strength-to-weight ratio. However, the material degrades when exposed to aggressive environments, such as acidic, alkaline, or salty solutions, and the control of corrosion has been achieved with the use of synthetic chemical inhibitors, but the increasing concern of environmental and health risks has shifted attention to more eco-friendly alternatives. The present study aimed at evaluating the efficacy of three vegetable oils (coconut oil, palm oil, and soybean oil) as environmentally friendly corrosion inhibitors for Aluminum 6061, and the alloy coupons were subjected to three different corrosive solutions (hydrochloric acid, sodium hydroxide, and sodium chloride). A quantitative experimental procedure was employed to determine the corrosion rate through the measurement of the weight loss of aluminum coupons prior to and after the immersion, and the results showed that all three oils were able to reduce the corrosion rate when compared to the samples without any inhibitor. Among them, coconut oil gave the best protection, followed by soybean oil and palm oil, because the adsorption of the organic compounds and fatty acids in the oils onto the aluminum surface formed a thin layer that separated the metal and the corrosive environment. Consequently, the results also showed that the use of bio-based oils can be a promising alternative to synthetic corrosion inhibitors in industries that use aluminumbased materials.
Swansoft Simulator Video Tutorial as Digital Media for Basic Computer Numerical Control Learning Wulandari, Amelia Dini; Marsono; Mawangi, Puteri Ardista Nursisda
Journal of Education and Teaching Learning Vol.4 No.1 (2026)
Publisher : PT MEDIA JURNAL DAN PENDIDIKAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59211/mjpjetl.v4i1.140

Abstract

Basic CNC learning in vocational high schools faces challenges including limited practical facilities and low student procedural understanding of CNC machine programming. This study aims to analyze the effect of Swansoft CNC Simulator-based video tutorial media on improving student cognitive learning outcomes. The research employed a one-group pretest-posttest quasi-experimental design. The research subjects consisted of 10 students in grade XI of the Machining Engineering program at SMK Muhammadiyah 1 Malang City, selected through purposive sampling. Data were collected through cognitive tests (30 multiple-choice items based on Bloom’s Revised Taxonomy covering C1–C5 levels) and analyzed using paired samples t-test. The results showed a statistically significant improvement in student learning outcomes (t(9) = −2.674, p = 0.025, Cohen’s d = 0.99), with a mean score increase from 73.60 (SD = 7.20) on the pretest to 81.30 (SD = 8.25) on the posttest, yielding a mean normalized gain (N-Gain) of 0.29 (low-moderate category). These findings indicate that simulation-based video tutorial media integrating visual and auditory channels effectively enhances conceptual understanding and programming accuracy in CNC machining. This study concludes that Swansoft CNC Simulator-based video tutorial media is effective as an instructional alternative for Basic CNC courses at the vocational secondary school level.
Co-Authors Danang Yugo Pratomo Dian Julianto Wahyudi Imam Muhtarom Marsono Mawangi, Puteri Ardista Nursisda Saifuddin Karim Subekhi, Prido Widowati, Tamara Rahma Yayi Febdia Pradani