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All Journal Journal of Mechanical Engineering Learning JURNAL DINAMIKA VOKASIONAL TEKNIK MESIN Empowerment : Jurnal Pengabdian Masyarakat GERVASI: Jurnal Pengabdian kepada Masyarakat Jurnal Ilmiah Teknik Mesin "MEKANIK" Reswara: Jurnal Pengabdian Kepada Masyarakat Jurnal Polimesin Jurnal Pendidikan Teknik Mesin
Gunawan, Safri
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Influence of Indium Tin Oxide (ITO) poling temperature in vacuum on surface roughness of Polyvinylidene Fluoride(PVDF) film Suprapto, Suprapto; Lisyanto, Lisyanto; Eswanto, Eswanto; Riadi, Selamat; Gunawan, Safri; Iskandar, Henry; Jubaidah, Jubaidah; Muhtadin, Muhtadin
Jurnal Polimesin Vol 21, No 6 (2023): December
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v21i6.4454

Abstract

The surface roughness is a significant parameter of the performance of PVDF thin film sensors. In this work, we have investigated the effect of ITO poling in vacuum at various temperature on the surface roughness of uniaxially stretched PVDF film. The influence of poling temperature on the surface roughness of PVDF film was examined using atomic force microscopy (AFM). In this work, the AFM data are obtained through the database, and topography is analyzed using Gwydion Software (GS). GS has characterized surface roughness in terms of Average Roughness (Ra), Root Mean Square (Rrms), and Arithmetic average height (Rz). The results show that the GS can detect and measure profile thickness and roughness on a nanoscale with reliable accuracy. The results confirm that the increased poling temperature can reduce the roughness of the surface.
EMPLOYMENT 5.0: THE RELATIONSHIP BETWEEN STUDENTS' PERCEPTION OF WELDING TECHNOLOGY COURSES AND THE WORK READINESS Januariyansah, Sapitri; Yulanto, Dwiki Muda; Siregar, Batumahadi; Situmorang, Hasianna Nopina; Gunawan, Safri; Doni, Rahma
Jurnal Dinamika Vokasional Teknik Mesin Vol. 10 No. 2 (2025)
Publisher : Department of Mechanical Engineering Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/dinamika.v10i2.92101

Abstract

Work readiness is an important factor in overcoming the high unemployment rate of college graduates. Various efforts have been made to improve the quality of work readiness, such as through welding technology courses. However, practical contributions measured through statistical analysis have never been made to date. The purpose of this study is to analyze the relationship between students' perceptions of welding technology courses and work readiness. This type of research was ex-post facto research with a quantitative approach. The data collection technique used a questionnaire technique. The data analysis technique used correlational inferential analysis. The results of the study indicate that students' perceptions of welding technology courses (X) have a relationship with work readiness (Y) in the moderate category (r = 0.577) with the amount of contribution based on the coefficient of determination (r2 = 0.333) which means that variable X contributes 33.3% to Y. Based on the regression coefficient (b = 0.228) which shows that if variable X increases by 1 unit then variable Y increases by 0.228. The implications of this study indicate that welding technology courses make a moderate contribution to improving work readiness
Co-Authors Atika, Liana Ayu Putri Ningsih Batubara, Agung Setia Didik Rohmantoro Doni, Rahma Dwiki Muda Yulanto Eswanto, Eswanto Eswanto, Eswanto Hanapi Hasan Hargiani, Fransisca Xaveria Hendra Susilo HENRY ISKANDAR Januariyansah, Sapitri Jubaidah, Jubaidah Lisyanto . Lubis, Abdi Bimardotillah Lubis, Ria Dini Wanty Meldianto, Efri Muhtadin Muhtadin Mulia Mulia Nur Rahmi, Wiwit Nursanni, Banu Pakpahan, Binsar Maruli Tua Rina, Wilda Selamat Riadi Siregar, Batumahadi Situmorang, Hasianna Nopina Suprapto Suprapto Utomo, Bawon