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All Journal INVOTEK: Jurnal Inovasi Vokasional dan Teknologi JPP IPTEK (Jurnal Pengabdian dan Penerapan IPTEK) JURNAL PENDIDIKAN TAMBUSAI Ensiklopedia Education Review Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering PAKAR Pendidikan Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Jurnal Pengabdian kepada Masyarakat Nusantara Community Empowerment JPTE: Jurnal Pendidikan Teknik Elektro AEEJ : Journal of Automotive Engineering and Vocational Education Jurnal Abdimas Kartika Wijayakusuma Jurnal Vokasi Mekanika Tsaqofah: Jurnal Penelitian Guru Indonesia ARZUSIN: Jurnal Manajemen dan Pendidikan Dasar Journal of Engineering Researcher and Lecturer JTPVI: Jurnal Teknologi dan Pendidikan Vokasi Indonesia Asian Journal of Science, Technology, Engineering, and Art J-CoSE: Journal of Community Service & Empowerment Journal of Innovative and Creativity Mars: Jurnal Teknik Mesin, Industri, Elektro dan Ilmu Komputer Innovation in Engineering Journal of Golden Generation Education
Wanda Afnison
Universitas Negeri Padang
Religion Aerospace Engineering Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Mathematics Mechanical Engineering Public Health Social Sciences Transportation Other

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Static analysis of boiler feed pump shaft in steam power plants: Enhancing durability and operational efficiency Muhammad Athar Altarisi; Rifelino Rifelino; Delima Yanti Sari; Wanda Afnison
Innovation in Engineering Vol. 1 No. 2 (2024): Regular Issue
Publisher : Researcher and Lecturer Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58712/ie.v1i2.8

Abstract

Centrifugal pumps are commonly used in industrial and domestic sectors to transport fluids by increasing their flow rate to a specific pressure. One type of centrifugal pump, the Boiler Feed Pump (BFP), plays a crucial role in steam power plants. Designed for continuous operation, BFP shafts are prone to wear and failure due to extreme operational conditions. This study employs computer-aided simulation using SolidWorks software to analyze von Mises stress, displacement, strain, and safety factors of BFP shafts with three material variations: AISI 4140, AISI 316, and AISI 304. The results indicate that AISI 4140 material exhibits the highest safety factor of 2.7 and the lowest displacement of 0.453 mm. Fatigue simulation also shows that AISI 4140 has the lowest damage percentage and the highest fatigue life. These findings suggest that AISI 4140 is the optimal material choice to enhance the durability and efficiency of shafts in applications requiring high reliability, such as BFPs in steam power plants.
Pengaruh Fasilitas Peralatan Praktik terhadap Hasil Keterampilan Pengelasan Siswa Kelas XI Jurusan Teknik Pengelasan dan Fabrikasi Logam di SMK Negeri 2 Payakumbuh. Abdilah, Zikri; Irzal, Irzal; Afnison, Wanda; Alfana, Yogi Dian
TSAQOFAH Vol 6 No 3 (2026): MEI
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/tsaqofah.v6i3.9747

Abstract

Welding is one of the essential competencies that students in the Welding and Metal Fabrication Engineering Expertise Program must possess. However, the practical learning process still faces limitations in equipment facilities, both in terms of quantity and usability, requiring students to take turns using the equipment and making practice time less effective. This condition has the potential to affect students’ welding skill outcomes. This study aims to determine the effect of practical equipment facilities on the welding skill outcomes of Grade XI students in the Welding and Metal Fabrication Engineering Department at SMK Negeri 2 Payakumbuh. This study employed a quantitative approach with a correlational method. The research population included all Grade XI students in the Welding and Metal Fabrication Engineering Department of SMK Negeri 2 Payakumbuh, totaling 55 students. The sample was determined using the total sampling technique, so the entire population was used as the research sample. Data were collected through a questionnaire to measure practical equipment facilities and an assessment rubric to measure students’ welding skills. Data analysis included prerequisite analysis tests, namely normality, linearity, and homoscedasticity tests, as well as hypothesis testing using simple linear regression, the t-test, and the coefficient of determination (R²). The results show that practical equipment facilities do not have a significant effect on students’ welding skill outcomes, with a significance value of 0.318 > 0.05. The coefficient of determination (R²) value of 0.019 indicates that practical equipment facilities can explain only 1.9% of the variation in students’ welding skill outcomes, while 98.1% is influenced by other factors outside this study. In addition, the direction of the relationship obtained is negative and not significant, with a regression coefficient value of -0.187. The conclusion of this study emphasizes that practical equipment facilities are not the main factor determining students’ welding skills; rather, other factors play a greater role, such as interest, motivation, theoretical understanding, and the learning process. The implications of this study emphasize the importance of a more comprehensive evaluation of practical learning by considering students’ internal factors and the quality of the vocational learning process.
Analysis Thermal for Disc Brake Using Finite Element Analysis (FEA) Alparis Nico Putra Utama; Wanda Afnison; Delima Yanti sari; Rifelino Rifelino
Jurnal Vokasi Mekanika (VoMek) Vol 7 No 2 (2025): Jurnal Vokasi Mekanika
Publisher : Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/vomek.v7i2.853

Abstract

Traffic accidents are one of the highest causes of death in Indonesia. One of the factors traffic accidents is caused by vehicles, in this case the braking system. Brakes are a device on a vehicle that functions to reduce the speed by applying friction. The main feature in the braking system is heat dissipation. If the brake overheating, the effectiveness of the braking system will be reduced. In general, there are two types of brakes, but in modern vehicles disc brake more used. In this study, various types of disc brakes will be tested. The designs tested are solid disc brakes, drilled-type disc brakes, and grooved-type disc brakes. The aim of research for determine the most optimal disc brake design. The temperature value on the surface of the disc brake will be measure. The Finite Element Analysis (FEA) method is used in this study. The validation process is carried out by comparing analytical result and Finite Element Analysis result on solid disc brakes. The speed before braking is 60 km / h. Material used on disc brake is grey cast iron. In the simulation process using Finite Element Analysis, the mesh size used is 3 mm and the number of elements is 255,244 elements. After the analysis was carried out, the temperature value in the grooved-type disc brake design was the smallest value than another with a maximum temperature of 143.56 ºC during braking. Thus, based on the results obtained, the grooved-type disc brake tends to be more optimal.
Numerical Analysis of Coupled Thermal-Mechanical on Drum Brakes Hukmanul Fikri; Delima Yanti Sari; Waskito Waskito; Wanda Afnison
Jurnal Vokasi Mekanika (VoMek) Vol 7 No 3 (2025): Jurnal Vokasi Mekanika
Publisher : Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/vomek.v7i3.884

Abstract

Drum brakes are one of the crucial components in motor vehicle braking systems, particularly in motorcycles, due to their advantages in production cost and resistance to environmental contamination. However, this type of brake has limitations in dissipating heat during braking, which can lead to temperature accumulation, thermal deformation, and reduced braking efficiency. This study aims to analyze the thermo-mechanical performance of drum brakes with various cooling groove designs (solid, straight-grooved, and slant-grooved) using a numerical method based on Finite Element Analysis (FEA) in ANSYS Workbench. The analysis was conducted in a transient manner, both thermally and structurally, to evaluate temperature distribution and total deformation for each design. The results show that the slant-grooved drum brake design yields the lowest temperature distribution and total deformation values, especially at high braking speeds, with a temperature distribution of 56.899?°C and total deformation of 17.67?×?10?³?mm. These findings indicate that groove design significantly affects the heat dissipation and structural deformation performance of the brake system. The study concludes that the slant-grooved design is superior in reducing heat and deformation, thereby offering the potential to improve braking safety and efficiency.
Analysis of Musculoskeletal Disorders in Electric Vehicle Prototype Drivers Using the Nordic Body Map Method Reyvanda Ayusran; Wanda Afnison; Irzal Irzal; Milana Milana
Jurnal Vokasi Mekanika (VoMek) Vol 7 No 3 (2025): Jurnal Vokasi Mekanika
Publisher : Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/vomek.v7i3.885

Abstract

The dwindling availability of fossil-based energy sources has spurred breakthroughs in the evolution of eco-conscious transportation, one of which is manifested in the Indonesian Electric Car Competition (Kompetisi Mobil Listrik Indonesia – KMLI). In this arena, collegiate teams engineer lightweight, single-occupant electric prototype vehicles emphasizing energy thrift. Nonetheless, spatial constraints and performance optimization frequently take precedence over ergonomic design, heightening the likelihood of musculoskeletal strain. This investigation seeks to examine bodily discomforts related to the musculoskeletal system as encountered by the operator of a prototype electric vehicle, employing the Nordic Body Map (NBM) assessment tool. The inquiry adopted a descriptive format via a focused case analysis involving the primary driver from the Megathrust Eco Team representing Universitas Negeri Padang (UNP) in the 2024 KMLI. Post-operation, the participant filled out the NBM form to denote discomfort regions, referencing a Likert-type scale from 1 (no pain) to 4 (extreme pain). The outcomes identified the cervical region, shoulders, dorsum, and lumbar zone as areas with elevated distress, classified under Pain and Intense Pain levels, thus revealing substantial ergonomic concerns. From these insights, it is inferred that the seating layout and cockpit geometry must be reconsidered and fine-tuned according to the driver’s anthropometric dimensions to alleviate physical complaints and boost vehicular comfort. The study aspires to aid in fostering electric vehicles that are more attuned to human-centered design, balancing well-being and operational safety.
Co-Authors - Primawati A, Yufrizal Abdilah, Zikri Adityo Adityo, Adityo Ahlal Fikri, Rivandy Ahmad Arif Ahmad Shafwan Hadi Alparis Nico Putra Utama Altarisi, Muhammad Athar Ambiyar, Ambiyar Andira, Muhammad Fadil Andre Kurniawan Andre Kurniawan Andre Kurniawan Andri Fadhil Arwizet Arwizet, Arwizet Asnil Asnil Aswanto, Trio Harinaldi Bahrul Amin Budi Syahri Bulkia Rahim Delima Yanti Sari Delima Yanti Sari Donny Fernandez Dori Yuvenda Dwiprima Elvanny Myori, Dwiprima Elvanny Eddy Marheni Eko Indrawan Eko Purnomo Elviza Yeni Putri Erizon, Nelvi Erzeddin Alwi Fadhli Ranuharja Faisal Amri Falah, M. Jalaluddin Fauza, Anna Niska Febri Prasetya Fiki Efendi Fivia Eliza Hardi, Farid Maulana Hari Sabarno Hasan Maksum Hasnul Fikri Hendra Dani Saputra Hukmanul Fikri Ihsan, Fachrul ilham yuliady Irma Yulia Basri Irzal Irzal Irzal, Irzal Jermaina, Nina Juli Sardi Jumadil Ashari Junil Adri Khairul, Farid Krismadinata Krismadinata, Krismadinata M. Yasep Setiawan Makruf, Zulhan Insan Masykur Masykur Milana Milana Muhammad Athar Altarisi Muhammad Farhan Muhammad Restu Alhamdi Muslim Muslim Mutiara Felicita Amsal Nikolas Verdian Guci Nurdin Hendri Nuzul Hidayat, Nuzul Okky Syaifatul, Achmad Purwanto, Wawan Purwantono Purwantono Purwantono, Purwantono Putra, Nandri Pratama Putra, Randi Purnama R. Chandra Rahmadani Rahmadani Rahmadiawan, Dieter Rahmat Hidayat Ramadhan, Raihan Randi Purnama Putra Remon Lapisa Resti Apriliyanti Reyvanda Ayusran Rifelino Rifelino Rizky Rahman Satria, Andam Sugiarto, Toto Utomo Wisesa, Budi Wagino Wakhinuddin Wakhinuddin, Wakhinuddin Waskito Waskito Waskito, Waskito Wifa, Iklil Yanto, Doni Tri Putra Yoga Volanda Saputra Yogi Dian Alfana Yuliady, Ilham Zainal Abadi Zulfadli, Fadli