Article Per Year (5 Year)
p-Index From 2021 - 2026
12.419
P-Index
This Author published in this journals
All Journal Jurnal Teknik Mesin CIVED (Journal of Civil Engineering and Vocational Education) QALAMUNA: Jurnal Pendidikan, Sosial, dan Agama INVOTEK: Jurnal Inovasi Vokasional dan Teknologi JURNAL PENDIDIKAN TAMBUSAI Jurnal Teknologi Informasi dan Pendidikan MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat GANDRUNG: Jurnal Pengabdian Kepada Masyarakat Teknomekanik Ideguru: Jurnal Karya Ilmiah Guru Vocational : Jurnal Inovasi Pendidikan Kejuruan Jurnal Vokasi Mekanika Al-Alam : Islamic Natural Science Education Journal Tsaqofah: Jurnal Penelitian Guru Indonesia MASALIQ: Jurnal Pendidikan dan Sains DEVOTE: Jurnal Pengabdian Masyarakat Global Jurnal Aplikasi IPTEK Indonesia Al-DYAS : Jurnal Inovasi dan Pengabdian kepada Masyarakat Journal of Engineering Researcher and Lecturer Ranah Research : Journal of Multidisciplinary Research and Development Journal of Innovative and Creativity Journal of Civil Engineering and Vocational Education Venus: Jurnal Publikasi Rumpun Ilmu Teknik Journal of Golden Generation Education JRTI (Jurnal Riset Tindakan Indonesia)
Delima Yanti Sari
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 Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Transportation Other

Published : 102 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 102 Documents
Search

 4   5   6   7   8 
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.
Effect of Weld Groove Type Variations on Deformation in Structural Carbon Steel Butt Joint Welding Using the Finite Element Method Muhammad Daffa Dzaky; Delima Yanti Sari; Waskito Waskito; Junil Adri
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.v7i3.877

Abstract

Deformation in welded joints can reduce the precision, strength, and service life of a structure, especially in structural carbon steel commonly used in the construction industry. One of the main factors influencing deformation is the type and angle of the weld groove. This study aims to analyze the effect of groove type and angle variations on deformation in butt joint welding of structural carbon steel. The method used is a numerical simulation based on the Finite Element Method (FEM) using ANSYS software, consisting of transient thermal and transient structural analyses. The groove variations include V-grooves with angles of 45°, 60°, and 75°, as well as U-grooves with angles of 50°, 60°, and 70°. The simulation results show that the V-groove with a 45° angle produces the maximum deformation of 2.1317 mm, while the U-groove with a 70° angle results in the minimum deformation of 0.23808 mm. These findings indicate that U-grooves generally produce lower deformation compared to V-grooves. Therefore, selecting the appropriate groove design can enhance the quality of weld joints and the overall structural performance.
Effect of Airfoil Profile Variations on the Rear Wing of a Racing Car on the Downforce Coefficient Using Computational Fluid Dynamics (CFD) Simulation Carlen Muhammad Hendra; Delima Yanti Sari; Arwizet K; Fitrah Qalbina
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.v7i3.881

Abstract

Variation of airfoil profile shape in race car rear wings plays a crucial role in generating optimal downforce to improve traction and vehicle stability. The main issue addressed in this study is the lack of clarity regarding which airfoil profile and angle of attack configuration are most effective in producing the highest downforce coefficient (Cdown). This research aims to analyze the aerodynamic performance of symmetric airfoils NACA 0012 and NACA 0015 at three different angles of attack, namely 9.5°, 19.5°, and 29.5°, using Computational Fluid Dynamics (CFD) simulation. The simulations were performed under steady-state flow conditions with an appropriate turbulence model to accurately capture pressure distribution and airflow characteristics. Results show that NACA 0012 generated higher and more stable Cdown values at low to medium angles, with the highest value of 1.4 at 29.5°. In contrast, NACA 0015 exhibited a more gradual performance increase and reached a Cdown of 1.2 only at the highest angle. The study concludes that slender airfoil profiles like NACA 0012 are more suitable for circuits with sharp corners, while NACA 0015 is better suited for straight tracks requiring progressive aerodynamic stability. This research contributes to optimizing rear wing design based on the aerodynamic demands of race cars.
Numerical Simulation of Natural Frequency on Shaft Using ANSYS Software Yopi Zekrri Jenizah Putra; Delima Yanti Sari; Waskito Waskito; Zainal Abadi
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.v7i3.883

Abstract

This descriptive study aims to analyze the effect of shaft diameter on the natural frequency and maximum deformation of a rotating shaft system. The analysis was conducted through numerical simulation using ANSYS Workbench software. The shaft and two symmetrically positioned disks were modeled, and a modal analysis was performed using the Finite Element Method (FEM) to determine the system’s first ten vibration modes. Simulation results showed that the natural frequencies ranged from 80.495 Hz to 280.4 Hz, with a maximum deformation of 58.903 mm occurring in the 9th mode. The lower modes (modes 1–6) exhibited lower frequencies but higher deformation, while higher modes (modes 7–10) showed more complex vibration patterns with consistently significant deformation values. This indicates that higher frequency does not necessarily result in lower deformation, and the system may still experience critical vibration. These findings demonstrate that the shaft's geometric configuration, including diameter and mass distribution of the disks, significantly affects its dynamic behavior. The simulation provides deeper insight into the vibration characteristics of the critical speed shaft apparatus used in practical experiments and serves as a reference for validating theoretical approaches such as the Dunkerley and Rayleigh methods.
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.
Experimental Study of Geometrical Accuracy of Artec Leo 3D Scanner on Complex Object Scanning Muhammad Khattami Al Saidhi; Rifelino Rifelino; Delima Yanti Sari; Febri Prasetya
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.v7i3.890

Abstract

This study aims to measure the geometrical accuracy of complex object scanning using the Artec Leo 3D scanner. The scanned object is a wheel rim, with eight combinations of parameters including variations in distance (50 cm and 100 cm), scanning angle (45° and 90°), and lighting conditions (indoor and outdoor). Deviations were measured from four reference points on the scanned model and compared to a reference model. The results show that the Indoor configuration with a scanning distance of 50 cm and a scanning angle of 90° gives the smallest deviation of 0.025 mm (0.01%), while the Outdoor configuration with a scanning distance of 50 cm and a scanning angle of 45° produces the largest deviation of -3.275 mm (-1.80%). The overall average deviation of all combinations is -0.63 mm or -0.36%, indicating that the Artec Leo can produce high accuracy if configured with the right parameters. The smallest deviation was obtained under indoor scanning conditions with a scanning distance of 50 cm and a scanning angle of 90°.
Effect of Rice Husk Ash and Clay Powder as Cooling Media in Post Weld Heat Treatment (PWHT) on The Impact Toughness of SMAW-Welded SS400 Steel Angga Hermawansyah; Zainal Abadi; Delima Yanti Sari; Rifelino
Jurnal Vokasi Mekanika (VoMek) Vol 8 No 2 (2026): Jurnal Vokasi Mekanika
Publisher : Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/f6gkaq38

Abstract

This study investigates the effect of variations in cooling media during Post Weld Heat Treatment (PWHT) on the impact toughness of low carbon steel SS400. The main problem addressed in this research is how differences in cooling medium characteristics influence the cooling rate, which subsequently affects the impact toughness of welded material. The objective of this study is to determine the effect of using rice husk ash, clay, and air as cooling media on the impact toughness value of SS400 steel. The experimental method was employed by applying PWHT to SMAW-welded specimens, followed by Charpy impact testing to obtain the final deflection angle, which was then converted into impact energy and impact value (HI). The results show that clay cooling medium provides the highest average impact toughness value of 1.175 J/mm², followed by rice husk ash at 1.107 J/mm², while air cooling yields the lowest value of 0.845 J/mm². These differences indicate that the thermal characteristics of the cooling media significantly influence the material’s ability to absorb energy before fracture, which is related to the stability of the cooling rate during the PWHT process. It can be concluded that variations in cooling media affect the impact toughness of SS400 steel, where more stable cooling conditions lead to higher toughness values.
PENERAPAN ALAT PENGURAI SABUT KELAPA DI MASYARAKAT NAGARI SUNGAI SARIAK PADANG PARIAMAN Hendri Nurdin; Delima Yanti Sari; Toto Sugiarto; Purwantono Purwantono; Hastuti Hastuti
Devote: Jurnal Pengabdian Masyarakat Global Vol. 5 No. 2 (2026): Devote : Jurnal Pengabdian Masyarakat Global, June 2026
Publisher : LPPM Institut Pendidikan Nusantara Global

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55681/devote.v5i2.5948

Abstract

Coconut is a plantation commodity that has economic value. The process of stripping coconut grains will leave abundant coconut fiber as waste. Coconut coir waste is partly used by farmer groups in Nagari Sungai Sariak as fuel which causes thick smoke and air pollution so that it becomes a problem and must be resolved. The solution is done by applying a coconut fiber decomposer tool so that creativity and productivity are built. The success of the application of a coconut coir decomposer tool that uses an 8.5 PK diesel motor drive and a 2600 rpm rotation which has a capacity of 51 kg / hour. The effectiveness of the tool reaches 95% in decomposing coconut fiber in a short time. The production of cocofibre is utilized with a touch of advanced processing by the community for guest chair upholstery fillers, foot mat materials and so on. The application of science and technology can have an impact on improving the welfare and empowerment of the community. In addition, building community awareness in Nagari Sungai Sariak has an impact on responsible production within the community.
ANALISIS FAKTOR PENGHAMBAT MINAT MAHASISWA DALAM MENGIKUTI PROGRAM MAGANG BERDAMPAK Iqbal Danuarta; Primawati Primawati; Delima Yanti Sari; Rizky Ema Wulansari
VOCATIONAL: Jurnal Inovasi Pendidikan Kejuruan Vol. 6 No. 3 (2026)
Publisher : Pusat Pengembangan Pendidikan dan Penelitian Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51878/vocational.v6i3.12198

Abstract

ABSTRACT This study aims to analyze the factors that inhibit the interest of students of the Department of This study aimed to analyze the factors inhibiting students’ interest in participating in the Impactful Internship Program at the Department of Mechanical Engineering, Faculty of Engineering, Universitas Negeri Padang. The study was motivated by the low level of student participation in the program, indicating the presence of various factors influencing students’ willingness to participate. A quantitative descriptive approach was employed involving 100 students from the Bachelor Program of Mechanical Engineering Education and Mechanical Engineering, cohorts of 2022 and 2023, selected through proportionate stratified random sampling. Data were collected using a questionnaire and analyzed through the Structural Equation Modeling (SEM) approach with SmartPLS 4.1.1.8 software. The results revealed that activity, motivation, and environment had positive and significant effects on students’ interest in joining the Impactful Internship Program. Among these factors, motivation exerted the strongest influence, followed by activity and environmental factors. The findings indicate that low student participation is influenced not only by internal factors but also by external factors that support student engagement in internship programs. Therefore, efforts to enhance student motivation, strengthen supporting activities, and create a conducive environment are essential to increase students’ interest in participating in the Impactful Internship Program. ABSTRAK Penelitian ini bertujuan untuk menganalisis faktor-faktor yang menghambat minat mahasiswa Departemen Teknik Mesin Fakultas Teknik Universitas Negeri Padang dalam mengikuti Program Magang Berdampak. Penelitian dilatarbelakangi oleh rendahnya tingkat partisipasi mahasiswa pada program tersebut, yang menunjukkan adanya berbagai faktor yang memengaruhi minat mahasiswa untuk berpartisipasi. Penelitian menggunakan pendekatan deskriptif kuantitatif dengan melibatkan 100 mahasiswa Program Studi S1 Pendidikan Teknik Mesin dan S1 Teknik Mesin angkatan 2022 dan 2023 yang dipilih melalui teknik proportionate stratified random sampling. Pengumpulan data dilakukan menggunakan angket, kemudian dianalisis dengan pendekatan Structural Equation Modeling (SEM) berbantuan perangkat lunak SmartPLS 4.1.1.8. Hasil penelitian menunjukkan bahwa aktivitas, motivasi, dan lingkungan berpengaruh positif dan signifikan terhadap minat mahasiswa dalam mengikuti Program Magang Berdampak. Di antara ketiga faktor tersebut, motivasi merupakan faktor yang memberikan pengaruh paling besar terhadap minat mahasiswa, diikuti oleh aktivitas dan lingkungan. Temuan ini mengindikasikan bahwa rendahnya partisipasi mahasiswa tidak hanya dipengaruhi oleh faktor internal, tetapi juga oleh faktor eksternal yang mendukung keterlibatan mereka dalam program magang. Oleh karena itu, peningkatan motivasi, penguatan aktivitas pendukung, serta penciptaan lingkungan yang kondusif perlu menjadi perhatian dalam upaya meningkatkan minat mahasiswa mengikuti Program Magang Berdampak.
Innovation of a Hot Steam Boiling System to Increase the Productivity of Anchious Fish Processing in the Ombak Badabuih Fishermen Group in Pesisir Selatan Delima Yanti Sari; Fitrah Qalbina; Melri Deswina; Suci Andri
GANDRUNG: Jurnal Pengabdian Kepada Masyarakat Vol. 7 No. 1 (2026): GANDRUNG: Jurnal Pengabdian Kepada Masyarakat
Publisher : Fakultas Olahraga dan Kesehatan, Universitas PGRI Banyuwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36526/gandrung.v7i1.7466

Abstract

Anchovies are small pelagic fish belonging to the order Malacopterygi and family Clupeidae, with lengths ranging from 40–145 mm. They have thin, easily detached scales, a silvery lateral line located between the pectoral and pelvic fins, and are commonly found in coastal waters. West Sumatra Province consists of both marine and land areas, with several coastal regencies, including Pesisir Selatan Regency, which has a coastline of approximately 201.8 km. In Koto XI Tarusan District, about 80% of the population relies on fishing as their main livelihood. Anchovy fishing is typically conducted at night using floating bagan gear with a 1 mm mesh size. Preservation methods include boiling, salting, drying, smoking, and cooling. A survey of the Ombak Badabuih Fishermen’s Group in Simpang Ampang Pulai, Koto XI Tarusan District, revealed that fishermen face limitations due to inadequate anchovy boiling equipment. The current tools use thin metal plates, wood covers, and clay pans that must be replaced every three months, resulting in high costs and reliance on firewood as fuel. Therefore, this community service program aims to innovate a stainless-steel anchovy boiling system to improve product quality and enhance the fishermen’s economic conditions.
Co-Authors - Primawati Abd Aziz Abdul Aziz Aditia Pratama Adityo Adityo Adlan Azmi Abdullah Afdal Dinilhaq Afferli Seftian Agusriza Almalik Akbar, M. William Akram Ramadhan Al Afif Attorik Alfian Barwan, Esco Alparis Nico Putra Utama Altarisi, Muhammad Athar Ambiyar, Ambiyar Aminuyati Ananda Jafron Rhionaldo Andika Putra Andre Kurniawan Andre Kurniawan Angga Hermawansyah Anna Niska Fauza Arafat, Andril Arfan Iswanda Arwizet Arwizet, Arwizet Asnil Asnil Azmul Fauzi Bagas Santoso Bagas Santoso Bakar, Muhammad Jamil Bestra Hamizum Budi Syahri Bulkia Rahim Carlen Muhammad Hendra Dani Harmanto Delfisanur Delfisanur Dieter Rahmadiawan Dinilhaq, Afdal Dori Yuvenda Dwi Sakti Putra Efendi, Fiki Efendi EKA RAHAYU Eko Indrawan Elmoudi, Muhammad Fatiy Ema Wulansari, Rizky Erika Afandi Fahrezi, Rangga Ashar Faisal Gustianto Fajero Tiffano Farid Permata Putra Fattahul Rizki Febri Prasetya Fenda Lisman Fiki Efendi Fikri Fadillah Fitrah Qalbina Fitrah Qalbina Gilang Ramadhan Hafizd Furqon Hasanuddin Hasanuddin Hasanuddin WS Hastuti Hastuti Hastuti Hastuti Hesty Kumala Sani Hukmanul Fikri Iqbal Danuarta Irshan Sepriza Irzal Irzal Jasman Julian Berlin Roland Tobing Junil Adri Junil Ardi Kelvin Rahmat Syah M Febriyan Baruna Putra M Fikri Maulana Rafi, Ikhsan Mega Oktaviani Melri Deswina Mhd. Fahri Meihanda Putra Miftahul Fikri Milana Milana mudhya_amalia afriardhy Muhammad Aulia Anugrah Muhammad Azim Muhammad Daffa Dzaky Muhammad Fadil Andira Muhammad Farhan Muhammad Iqbal Iski Muhammad Khattami Al Saidhi Muhammad Rizki Muhammad Rizki Anshari Muhammad Zainul Hasan Muklis Muklis Mulianti Mulianti Mulyadi Mulyadi Nabawi, Rahmat Azis Nelvi Erizon Nizwardi Jalinus Nurdin Hendri Nurwijayanti Oki Darwis Prima Putra Okky Syaifatul, Achmad Peri Irawan Purwantono Purwantono Purwantono, Purwantono Putra, Nandri Pratama Putra, Romi Rachman Setiawan Rasyid Ridho Harahap Refdinal, Refdinal Remon Lapisa Remon Lapisa Resti Apriliyanti Reynaldy Pasaribu Rhionaldo, Ananda Jafron Richardo Richardo Ricky Andrianto Rifelino Rifelino Rifelino Rihan Salim, Muhamad Rilgy Aulia Rizki Ramadhan Nasution, Muhammad Rizky Ema Wulansari Rodesri Mulyadi Salmat Salmat Salmat, Salmat Sani, Hesty Kumala Saputra, Ilham Dwi Satria, Andam Sigit Dwi Lesmana Silfi Chorillah Putri Siregar, Batu Mahadi Suci Andri Sudjono, Aldo Alfattah Sukardi Sukardi Sukardi, Sukardi Syafriade Putra Syahril Syahril Syahril Syahril Tasyah Tasyah Toto Sugiarto Tsung-Liang Wu Utami, Fathya Suci Wagino Wahyudi Wahyudi Wanda Afnison Waskito Waskito Waskito Waskito, Waskito Willyardo Putra Ramon Wulansari, Rizky Ema Yolli Fernanda Yopi Zekri Jenizah Putra Yopi Zekrri Jenizah Putra Yufrizal Yufrizal A Yufrizal Yufrizal Zainal Abadi Zainal Abadi Zuanda Maulana Nasution