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An Effect of Electrical Current Strength and DCEN Polarity on SMAW Welding Results in Butt Joint Position 1G Veronika, Rika; Bohari, Bohari; Putra, Ananda Yhuto Wibisono
Jurnal Teknik Mesin Mechanical Xplore Vol. 4 No. 1 (2023): Jurnal Teknik Mesin Mechanical Xplore (JTMMX)
Publisher : Mechanical Engineering Department Universitas Buana Perjuangan Karawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36805/jtmmx.v4i1.5567

Abstract

This study aims to understand the effect of current strength variations on the Direct Current Negative Electrode (DCEN) polarity on the results of welding at butt joint joints. In this study, ASTM A36 steel was chosen as the main material, while the E6013 electrode was used as the welding electrode. The method used is an experimental approach with a qualitative approach, which allows researchers to gain a deeper understanding of the effect of current variables on welding results. The results of three experiments conducted at welding current of 60 A, 90 A, and 120 A provide a clear picture of the effect of these variables on the butt joint. In the first specimen with a current strength of 60 A, there was not enough penetration and many defects in the capping. Low current strength does not produce optimal welding results at the joint. However, in the second specimen with a current strength of 90 A, there was an initiation of penetration, although it was still incomplete. There are also fewer defects in the capping compared to the first specimen, and it shows an increase in welding results with an increase in current strength. In the third specimen with a current strength of 120 A, there is better penetration, but still not achieving complete penetration. In addition, the capping has many defects, including the suck back. It shows that using high current strength only sometimes produces optimal welding results and can present challenges, such as joint defects.
ANALISIS PERBAIKAN KINERJA HEATER PADA SISTEM KILN DRY DI PT. SEJIN LESTARI FURNITURE Rumapea, Radella; Wibisono Putra, Ananda Yhuto
Jurnal Informatika dan Teknik Elektro Terapan Vol. 13 No. 1 (2025)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jitet.v13i1.5989

Abstract

Penelitian ini menuliskan tentang proses perbaikan sistem heater pada kiln dry dengan fokus pada industri pengeringan kayu di PT. Sejin Lestari Furniture Rangkasbitung. Penelitian ini menekankan pentingnya pemeliharaan, termasuk pembersihan dan penanganan perbaikan heater untuk memastikan sistem berfungsi optimal dengan menggunakan pendekatan kualitatif, dengan metode studi kasus, dan analisis data deskriptif kualitatif. PT. Sejin Lestari Furniture Rangkasbitung sistem heater terkadang mengalami pengeringan dan penyumbatan pada sistem kiln dry dimana sistem tersebut mengalirkan bahan bakar yaitu oli dari boiler menuju kiln dry dengan melalui heater. Identifikasi masalah melibatkan heater, mulai dari boiler yang mengalirkan oli menuju heater, diikuti oleh langkah-langkah perbaikan yang harus dilakukan. Perbaikan heater melibatkan pembersihan bagian yang kotor dan tersumbat. Heater dilakukan perbaikan ketika tidak mengeluarkan panas yang optimal, dan mengalami penyumbatan yang disebabkan penggumpalan oli dan akan mengakibatkan proses pengeringan kayu tidak optimal, sehingga harus dilakukan perbaikan dengan proses pembakaran agar oli tidak menggumpal dan tidak tersumbat. Hasil perbaikan diharapkan meningkatkan efisiensi kiln dry, mengoptimalkan proses pengeringan, dan mendukung kualitas produk kayu yang dihasilkan. 
Analisis Kerusakan Track Adjuster Excavator Hitachi ZX 200 Di PT. Pelabuhan Tanjung Priok Cabang Banten Ramdani, Al Fikri Muhamad; Ananda Yhuto Wibisono Putra
Jurnal Pendidikan Sains dan Teknologi Terapan | E-ISSN : 3031-7983 Vol. 2 No. 4 (2025): Oktober - Desember
Publisher : CV.ITTC INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This research aims to analyze the causes of damage to the track adjuster of the Hitachi ZX 200 excavator operating at PT Pelabuhan Tanjung Priok Branch Banten. The track adjuster functions to maintain track tension so that the stability and mobility of the excavator remain optimal during operations. This study employs a qualitative approach with a case study method, while the data collection techniques include observation, interviews, and component disassembly to identify damage in detail. The results show that the most frequent damage occurs in the adjuster seal, which causes hydraulic oil leakage and weakening of the recoil spring. The main contributing factors include operation in harsh terrains, component lifespan exceeding service limits, and suboptimal periodic maintenance. The impact is highly significant as it disrupts the excavator’s performance and slows down the loading and unloading process at the port. Therefore, proactive maintenance strategies such as Reliability Centered Maintenance (RCM) and timely component replacement
An evaluation of Pancasila student profile strengthening project in vocational schools: Evidence from tangerang district Yhuto Wibisono Putra, Ananda; Sanam, Sanam; Abdillah, Hamid; Fawaid, Moh
Jurnal Pendidikan Vokasi Vol. 15 No. 1 (2025): February
Publisher : ADGVI & Graduate School of Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jpv.v15i1.79919

Abstract

This study aims to evaluate the appropriateness of implementing P5 at SMKN 5 in Tangerang District from the perspectives of context, input, process, and product. The study's findings inform SMKN 5 and other schools that wish to implement P5. The study's participants comprise 91 P5 students who completed a questionnaire, three students who participated in interviews, nine teachers, and three interview informants. This study employs the CIPP (context, input, process, product) evaluation method, a mixed-methods approach with a sequential explanatory design. Data were collected through questionnaires, documentation, interviews, and observations, and analyzed using descriptive statistics. The findings show that: 1) the context is appropriate based on the interviews and observations; 2) the input appropriateness is scored 4.28 (86%) by teachers and 3.81 (76%) by students; 3) the process appropriateness is scored 4.37 (87%) by teachers and 4.16 (83%) by students; 4) the product appropriateness is scored 4.42 (88%) by teachers and 4.27 (85%) by the students; 5) the overall appropriateness is scored 4.36 (87%) by teachers and 4.08 (82%) by students. The evaluation results indicate that the implementation of P5 at SMKN 5 in Tangerang District is considered appropriate. The recommendations include updating the P5 guidelines, developing a holistic evaluation and an interactive teaching method, matching P5 projects to students' competence levels, and enhancing communication with stakeholders.
THE INFLUENCE OF SCHOOL AND FAMILY ENVIRONMENTS ON ACADEMIC ACHIEVEMENT OF GRADE X STUDENTS IN TECHNICAL DRAWING SUBJECT IN THE TKRO DEPARTMENT OF SMKN 7 SERANG Pahrudin, Iip; Supriyatna, Deddy; Putra, Ananda Yhuto Wibisono Putra
Journal of Mechanical Engineering Education Vol 12, No 1 (2025): June 2025
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/jmee.v12i1.83380

Abstract

This study aims to determine the influence of school and family environments on student learning achievement in the subject of Engineering Drawing for class X TKRO at SMKN 7 Serang in the 2024/2025 academic year. The school environment includes physical, social, and academic aspects, while the family environment includes emotional support, supervision, and parental involvement. This study uses a quantitative approach with a survey method, involving all 31 class X TKRO students. Data were collected through a Likert scale questionnaire that had been tested for validity and reliability, as well as documentation of report card grades. Data analysis used the T test, F test, and multiple linear regression with the help of SPSS version 25. The results showed that neither the school environment nor the family environment had a significant effect, either partially or simultaneously, on student learning achievement. The coefficient of determination (R²) value of 0.086 indicates that the influence of the two variables is very low. This finding indicates that other factors such as learning motivation and learning strategies play a greater role in determining student achievement.
STEAM-Based Pre-Vocational Learning: A Process Assessment Study Using a Mini Solar Panel House Project Janata, Ade Dwi Putra; Febriyanto, Rusdi; Putra, Ananda Yhuto Wibisono; Putra, Ricky Cahyasari; Ikhsanudin, Ikhsanudin
International Journal of STEM Education for Sustainability Vol 6, No 1 (2026)
Publisher : Gemilang Maju Publikasi Ilmiah (GMPI) 

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53889/ijses.v6i1.754

Abstract

This study examined the effectiveness of STEAM pre-vocational learning in terms of the development of students’ psychomotor skills and affective attitudes. The study employed a descriptive quantitative approach with a project-based observation method among 23 fifth-grade students at an elementary school in Indonesia. The learning process was developed based on a Mini Solar Panel House project, which was an authentic pre-vocational learning task that integrated science, technology, engineering, art, and mathematics. The data were gathered using a validated process observation tool, which had content validity confirmed by Aiken’s V-value ( 0.75) and high internal consistency for both psychomotor (α = 0.87) and affective (α = 0.84) dimensions. The psychomotor dimension included four components: work safety, work preparation, work procedure, and presentation of results, while the affective dimension included responsibility, teamwork, communication, and discipline. The findings indicated that students demonstrated high performance in both dimensions with a mean score of 1.80 for psychomotor skills and 1.78 for affective attitudes on a 2.00-point scale. The highest achievements were obtained in work procedure (M = 1.90) and discipline (M = 1.93), while presentation skills (M = 1.70) and teamwork (M = 1.60) were relatively lower. The Pearson’s correlation analysis showed a strong positive correlation between the psychomotor and affective areas (r = 0.76, p 0.01), with the highest correlation between work procedure and discipline (r = 0.81). The findings of this study show that STEAM-based pre-vocational learning is an effective approach to support the integrated development of technical competencies and work-related attitudes, as measured by process-based assessment. This study adds to the existing literature on STEAM by providing empirical insights into the integration of psychomotor and affective areas in early pre-vocational settings. It has implications for the development of holistic and project-based learning models.
Fostering Prevocational STEAM Learning through Motion-to-Electricity Module: A Hands-on Approach for Elementary Students Putra, Ricky Cahyasari; Ikhsanudin, Ikhsanudin; Janata, Ade Dwi Putra; Febriyanto, Rusdi; Putra, Ananda Yhuto Wibisono
International Journal of STEM Education for Sustainability Vol 6, No 1 (2026)
Publisher : Gemilang Maju Publikasi Ilmiah (GMPI) 

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53889/ijses.v6i1.757

Abstract

The inclusion of Science, Technology, Engineering, Arts, and Mathematics (STEAM) education in the elementary level has been seen as a crucial part in the development of 21st-century skills and prevocational developments of elementary students. This study aims to find out the effectiveness of a hands-on motion-to-electricity learning module in enhancing STEAM skills of 5th-grade elementary students using a one-shot quasi-experimental design. The participants consisted of 28 fifth-grade students from a primary school in the Banten province. To demonstrate the conversion of kinetic energy into electrical energy, the students built simple wheel generator sets using bicycle dynamos, wires, rotating wheels, and LED lights. Immediately after the activity, a 15-item validated evaluation form was employed to collect data, focusing on the principles of energy conversion, concepts of renewable energy, and simple engineering knowledge. Based on the statistical analysis, 82.1% of the students achieved beyond the required level of proficiency, scoring a mean of 67.25 and a standard deviation of 16.34. The findings of the observation conclusion revealed that the students exhibited a positive attitude towards technical subjects, were actively engaged in their learning process, and worked together to overcome problems. The findings of the study's conclusion indicate that interactive STEAM educational materials can be a valuable tool in increasing the interest of primary school students in technical subjects and their understanding of energy conversion concepts. This study supports the use of hands-on learning approaches in elementary STEAM education as a foundation for future prevocational and technical education.
Psychometric Validation of a STEAM-Based Knowledge Instrument for Measuring Energy Conversion Concepts in Fifth-Grade Students Ikhsanudin Ikhsanudin; Ricky Cahyasari Putra; Ade Dwi Putra Janata; Rusdi Febriyanto; Ananda Yhuto Wibisono Putra; R. Ahmad Zaky El Islami; Victor M. Alasa; Jun S. Camara; William J. Triplett
International Journal of STEM Education for Sustainability Vol 6, No 2 (2026)
Publisher : Gemilang Maju Publikasi Ilmiah (GMPI) 

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53889/ijses.v6i2.762

Abstract

This study aimed to develop and validate the quality of a multiple-choice instrument for measuring fifth-grade elementary students' understanding of kinetic-to-electrical energy conversion concepts within a STEAM (Science, Technology, Engineering, Arts, and Mathematics) framework. The research employed a Design and Development Research (DDR) approach with systematic instrument development procedures comprising: literature review and blueprint development, item construction, expert validation, field testing with 28 fifth-grade students, and comprehensive psychometric analysis. The instrument consists of 20 multiple-choice items covering three knowledge dimensions: conceptual (5 items), procedural (10 items), and applicative (5 items). Content validity was established through expert review by three science education specialists, yielding a Content Validity Index (CVI) of 0.87. Item analysis revealed difficulty indices ranging from 0.35 to 0.85 (predominantly moderate difficulty) and discrimination indices ranging from 0.30 to 0.75 (good to excellent discrimination). Reliability analysis using Cronbach's alpha produced a coefficient of 0.82, indicating high internal consistency suitable for elementary school assessment contexts. The instrument demonstrates satisfactory psychometric properties aligned with standards for elementary science assessment and effectively integrates STEAM pedagogical approaches.
Student Cognitive Analysis in STEAM-Based Pre-Vocational Experiential Learning at the Elementary Level Rusdi Febriyanto; Ade Dwi Putra Janata; Ananda Yhuto Wibisono Putra; Ricky Cahyasari Putra; Ikhsanudin Ikhsanudin; R. Ahmad Zaky El Islami; Nguyen Van Bien; Ahmet Selçuk Akdemir
International Journal of STEM Education for Sustainability Vol 6, No 2 (2026)
Publisher : Gemilang Maju Publikasi Ilmiah (GMPI) 

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53889/ijses.v6i2.758

Abstract

The Making Indonesia 4.0 program requires an educational system that fosters transdisciplinary, contextual, and practical learning to improve technical literacy and promote environmental sustainability. This study is aimed to assess the effectiveness of STEAM-based pre-vocational experiential learning in improving the cognitive abilities of primary school children. This study employed a quantitative, quasi-experimental One-Group Pretest-Posttest design. The study involved 27 fifth-grade primary school students selected through a purposive sampling technique. The results showed that the average pre-test score for students was 54.70, and most of them fell into the medium range (51–75). After STEAM-based learning was put into place, the average score on the post-test went up to 72.66, and most students moved up to the high group (76–100). According to Hake's criteria (1999), the N-Gain analysis showed an average value of 0.40, which means it was moderate. The Paired Sample t-Test also showed a significance value of p = 5.75 × 10⁻⁷ (0.05), which means that the learning outcomes improved in a statistically significant way. Thus, it can be deduced that STEAM-oriented pre-vocational experiential learning is comparatively beneficial in augmenting students' cognitive abilities. This method positively influences learning outcomes descriptively and is empirically validated, rendering it pertinent for use as a contextual learning technique to enhance 21st-century capabilities in primary education.