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All Journal Gender Equality: Internasional Journal of Child and Gender Studies Journal of Applied Sciences and Advanced Technology
Mutia, Sri
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Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Engineering Social Sciences

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The Influence Of Work Surface Roughness Caused By Fraising Machined With HSS Chies Aljufri, Aljufri; Rizki, Muhammad Nuzan; Akmal, Syarifah; Mutia, Sri; Rambe, Farhan Wafi
Journal of Applied Sciences and Advanced Technology Vol 6, No 2 (2023): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jasat.6.2.49-56

Abstract

The development of production techniques is required to produce good products that have standards for the products produced, both in terms of profile shape, size precision, surface roughness, hardness, material flexibility, and others that comply with standards. The surface roughness of a product can affect its functions, such as its level of precision and ability to accept loads. This research aims to find out how much influence cutting speed and depth of cut have on surface roughness with variations in cutting speed parameters of 21 meters/minute and 26 meters/minute and for AISI 4140 steel cutting speed parameters of 12 meters/minute and 17 meters/minute and cutting depths of 0.1 mm and 0.3 mm on four types of steel with End Mill cutting blades made from High-Speed Steel with a total of 4 flute cutting blades. Next, surface roughness testing and analysis of variance were carried out to determine the influence of parameters on surface roughness. The results obtained were that the largest average surface roughness, namely Ra = 5.33 µm, occurred on AISI 4140 steel at a cutting speed of 12 m/min with a cutting depth of 0.3 mm. Meanwhile, the smallest average surface roughness, namely Ra = 0.91 µm, occurred on AISI 1045 steel at a cutting speed of 21 m/min with a cutting depth of 0.1 mm. Next, an analysis of the variance method was also carried out with the following results: cutting speed only affected S45C steel because the value of Fcount>Ftable (13.18107506 > 5.32). The depth of cut does not have a significant effect on surface roughness on all types of steel because of the comparison results Fcount<Ftable. The interaction of cutting speed and cutting depth does not affect surface roughness because the comparison shows that Fcount <Ftable for all types of steel.
FAKTOR-FAKTOR PENUNJANG DAN PENGHAMBAT DALAM PELAKSANAAN PEMBELAJARAN DARING (ONLINE) PPG DALAM JABATAN (DALJAB) PADA GURU PEREMPUAN DI ACEH Lailatussaadah, Lailatussaadah; Fitriyawany, Fitriyawany; Erfiati, Erfiati; Mutia, Sri
INTERNATIONAL JOURNAL OF CHILD AND GENDER STUDIES Vol 6, No 2 (2020)
Publisher : Universitas Islam Negeri Ar-Raniry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/equality.v6i2.7735

Abstract

The low quality of education in Indonesia has something to do with the low quality of teacher. Meanwhile, facing the challenge of 4.0 era, teacher is supposed to prepare the student to have the competencies and master the information and technology. Thus, professional teacher is absolutely needed in order to increase the quality of education. To solve this problem, the government conduct the Teacher Professionalism Improvement Program (PPG). This study is aimed at investigating the pros and cons in applying the online PPG daljab for Female teachers in Aceh province. This study is conducted through the qualitative approach, interview, observation and documentation. The subjects of this study are consisting of four female teachers, three online facilitators. Whilst, the data analysis techniques were conducted through the Miles and Hubberman models. The result of this study shows that there are two supporting factors in the success of the implementation of online PPG for the female Acehnese teachers. First, the support is from the online group members and then the second is from the support from the family members in operating the Information and Technology (IT) related issues. Meanwhile, the cons factors are the disability of the teacher to operate the laptop, poor internet connection, lack of focuses due to the teaching tasks at school, and the teacher motivation in mastering the IT and applying it in the teaching learning process. Therefore, it can be concluded that the program evaluation and IT training for in- service PPG are absolutely required. It is essential to conduct an IT empowerment for the pre- training teacher in the basis of the network availability and age.
Co-Authors Akmal, Syarifah aljufri aljufri, aljufri Erfiati, Erfiati Fitriyawany Fitriyawany Lailatussaadah Lailatussaadah Rambe, Farhan Wafi Rizki, Muhammad Nuzan