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All Journal Jurnal Kompetensi Teknik Jurnal Bahan Alam Terbarukan Jurnal Pendidikan Teknik Mesin Rekayasa: Jurnal Penerapan Teknologi dan Pembelajaran Sainteknol : Jurnal Sains dan Teknologi Rekayasa Mesin Jurnal Rekayasa Mesin Journal of Mechanical Engineering Science and Technology Journal of Mechanical Engineering Learning Jurnal Teknik Mesin Indonesia Jurnal Penelitian Pendidikan Indonesia Journal of Vocational and Career Education Jurnal Pendidikan dan Teknologi Indonesia Abdi Teknoyasa Jurnal Inovasi Pengabdian dan Pemberdayaan Masyarakat Advance Sustainable Science, Engineering and Technology (ASSET) Journal of Vocational and Career Education Jurnal Bahan Alam Terbarukan J-Proteksion : Jurnal Kajian Ilmiah dan Teknologi Teknik Mesin
Samsudin Anis
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Aerospace Engineering Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Other

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Nozzle Tester Teaching Tool to Enhance Learning Outcomes in Conventional Diesel Engine System for Light Vehicles Hidayatulloh, Choirul Fatah; Khumaedi, Muhammad; Anis, Samsudin
Journal of Vocational and Career Education Vol. 10 No. 2 (2025): December 2025
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jvce.v10i2.31526

Abstract

The nozzle tester, which is commonly used in the automotive engineering program at SMK N 1 Kedungwuni, is in a leaking condition, limiting its effectiveness in supporting learning and consequently affecting student learning outcomes. This issue is the main reason for conducting research on the development of a nozzle tester using a recycled jack, aimed at enhancing the learning of conventional diesel engine systems. This study employs a Research and Development (R&D) approach with the ADDIE model for development. The research method used is a pretest-posttest group design. The findings of the study include: (1) the developed teaching tool was considered feasible by media and subject matter experts, with content validity ratio (CVR), content validity index (CVI), and percentage of agreement (PA) analyses; (2) product trials showed a high level of effectiveness, demonstrated by the Independent Sample t-Test, where the N Gain Score resulted in a significant (2-tailed) value; and (3) the reproducibility coefficient (Kr) and scalability coefficient (Ks) both indicate that the application of the nozzle tester in the conventional diesel engine system learning process is very practical. The conclusion of this study is that the nozzle tester can significantly improve the learning outcomes of conventional diesel engine systems.
Development of a Learning Module for Road and Bridge Design Modeling with Augmented Reality Integration Pratiwi, Wikanti; Qudus, Nur; Anis, Samsudin
Journal of Vocational and Career Education Vol. 10 No. 2 (2025): December 2025
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jvce.v10i2.31758

Abstract

The average learning outcomes of eleventh-grade students in 2024 indicate a disparity between psychomotor skills (88), which are higher, and cognitive skills (83). Augmented Reality (AR)-based learning is expected to have the potential to enhance the conceptual abilities of vocational high school students, who tend to be less developed than their psychomotor skills. The purpose of this study was to analyze the feasibility of the module, evaluate its effectiveness, and assess the improvement of students’ cognitive abilities. This research employed the ADDIE development model (Analysis, Design, Development, Implementation, and Evaluation). The findings revealed that the AR-based module was deemed feasible by both material experts and media experts, with a CVR value of 1. Of the 37 cognitive test items developed, 26 were found to be valid and used in the study, while 11 questions were excluded due to invalidity. The reliability coefficient of 0.854 indicated very high instrument consistency. Based on the N-Gain test, the experimental class recorded an improvement of 0.61 (moderately effective), while the control class achieved only 0.21 (ineffective). These results demonstrate that the AR-based module is more effective in enhancing students’ cognitive abilities compared to conventional learning methods.
Mechanical Performance of Epoxy Composite Reinforced with Wood Dust and Crumb Rubber Waste Imran, Al Ichlas; Siregar, Januar Parlaungan; Cionita, Tezara; Fitriyana, Deni Fajar; Anis, Samsudin; Dewi, Rozanna; Junaedi, Thomas; Wijayanto, Etanto Heiliano; Prayogo, Wisnu
Advance Sustainable Science Engineering and Technology Vol. 7 No. 4 (2025): August-October
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v7i4.2041

Abstract

The incorporation of wood dust and crumb rubber waste as filler in polymer matrix composite still requires in-depth evaluation of mechanical properties because they have different characteristics. This study evaluates the tensile, flexural, and hardness properties of epoxy composites reinforced with various fractions of wood dust and crumb rubber (5, 10, and 15%). The results showed that the composite with 5% crumb rubber produced the highest tensile strength of 15.52 MPa (CR5), while the highest flexural strength was 30.46 MPa (CR10), and the highest hardness was 75.9 HRC (CR15), indicating superior performance for CR fillers. The observations of the fracture surface showed that increasing the fraction of wood dust contributed to lowering the mechanical performance due to the relatively large distribution of voids and agglomeration. This finding confirms the importance of filler type and fraction selection on composite performance. Future research is recommended to explore filler surface modification and hybrid combinations to improve dispersion and bonding between phases in composites.
Development of Practical Tools Using Computer Power Supply for Light Vehicle Electrical System Learning Aziz, Abdul; Khumaedi, Muhammad; Anis, Samsudin; Supraptono, Eko
Journal of Vocational and Career Education Vol. 10 No. 1 (2025): July 2025
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jvce.v10i2.31866

Abstract

A common issue in the practical learning of light vehicle electrical systems is the inadequate availability of voltage sources, particularly batteries, in terms of quality and quantity. As a result, most students, after being assessed, receive scores that do not meet expectations. To address this issue, an alternative voltage source is needed to replace the battery, ensuring that the practical learning process for the light vehicle electrical system runs smoothly. This study aims to develop a practical tool using a computer power supply to improve the learning outcomes of the light vehicle electrical system. The research employs the ADDIE development model (Analysis, Design, Development, Implementation, and Evaluation). The experimental method used involves a pretest and posttest group, comparing the experimental class and the control class, consisting of 72 students. The results show that the practical tool using a computer power supply has a significant impact on the learning outcomes of the light vehicle electrical system, as analyzed through a one-tailed t-test. Based on N-Gain Score calculations, the tool is effective in improving learning outcomes, achieving high-level results. The conclusion of this research is that the practical tool using a computer power supply can replace the role of a battery as a voltage source in light vehicle electrical system practices.
Pemberdayaan Produsen Batik melalui Inovasi Spray Dryer dalam Pengolahan Pewarna Alami di Gunungpati, Semarang Kusumastuti, Adhi; Abidin, Zaenal; Anis, Samsudin; Marlangen, Retno; Fahira, Jian; Nur Aini, Intan; Novitasari, Neny; Phusavat, Kongkiti
Jurnal Inovasi Pengabdian dan Pemberdayaan Masyarakat Vol 5 No 2 (2025): JIPPM - Desember 2025
Publisher : CV Firmos

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54082/jippm.886

Abstract

Para perajin batik menghadapi masalah yang berkelanjutan dengan pewarna alami cair yaitu degradasi yang cepat, warna yang tidak konsisten, dan masa simpan yang pendek sehingga mengurangi efisiensi dan menghambat produksi skala kecil. Untuk mengatasi masalah ini, diperkenalkan teknologi spray dryer untuk mengubah ekstrak pewarna alami cair menjadi bubuk yang stabil. Melalui sosialisasi terstruktur, pelatihan, dan praktik langsung, para peserta mempelajari prinsip, fungsi, prosedur keselamatan, dan manfaat ekonomi. Efektivitas dievaluasi menggunakan tes pra/pasca sepuluh item dan diskalakan ke 25 peserta untuk interpretasi pemangku kepentingan. Hasilnya menunjukkan peningkatan yang substansial: rata-rata pra-tes 2,2/10 meningkat menjadi pasca-tes 9,5/10 (≈+7,3 poin, ≈+332% di atas nilai dasar), dengan rata-rata N-Gain 0,94 (Tinggi). Para peserta menunjukkan penguasaan yang lebih kuat dalam produksi bubuk, masa simpan yang lebih lama, efisiensi penyimpanan, dan konsistensi pewarnaan, di samping kepercayaan diri dan kemauan yang lebih tinggi untuk mengadopsi teknologi ini. Secara keseluruhan, program ini secara efektif menjembatani kesenjangan pengetahuan–praktik dan menunjukkan nilai praktis spray drying untuk mendukung produksi pewarna alami yang berkelanjutan, efisien, dan mandiri dalam batik.
Strengthening The Batik Home Industry Through Natural Dye Powder Innovation and Ultrasonic Dyeing Technology Anis, Samsudin; Maulana, Sonika; Fitriyana, Deni Fajar; Abidin, Zaenal; Marlangen, Retno; Kusumastuti, Adhi; Kamis, Arasinah
Jurnal Inovasi Pengabdian dan Pemberdayaan Masyarakat Vol 5 No 2 (2025): JIPPM - Desember 2025
Publisher : CV Firmos

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54082/jippm.891

Abstract

Program pengabdian masyarakat ini bertujuan untuk menyebarluaskan pemanfaatan bubuk pewarna alami yang dikombinasikan dengan teknik pewarnaan berbantuan ultrasonik pada industri batik rumahan guna meningkatkan keberlanjutan dan efisiensi produksi. Program ini melibatkan 25 perajin batik yang berpartisipasi dalam sesi pelatihan, demonstrasi praktik, serta evaluasi pra-tes dan pasca-tes menggunakan instrumen tervalidasi yang terdiri dari sepuluh pertanyaan pilihan ganda tentang teknologi pewarnaan alami. Hasil menunjukkan peningkatan pemahaman peserta yang signifikan, dengan skor rata-rata pra-tes 56,8 meningkat menjadi 89,2 pada pasca-tes. Analisis efektivitas ternormalisasi (N-Gain) menghasilkan nilai 0,75, yang dikategorikan tinggi, menunjukkan efektivitas program dalam mentransfer pengetahuan dan keterampilan. Temuan ini menegaskan bahwa pewarnaan berbantuan ultrasonik dengan pewarna alami bubuk menawarkan keunggulan dalam hal waktu pemrosesan yang lebih singkat, penetrasi pewarna yang lebih baik, dan pewarnaan yang lebih konsisten dibandingkan metode konvensional. Selain hasil teknis, program ini berkontribusi dalam memberdayakan perajin lokal dengan memperkenalkan metode inovatif namun praktis yang selaras dengan praktik tekstil berkelanjutan. Kondisi tersebut menunjukkan pentingnya keterlibatan kolaboratif universitas–masyarakat dalam mempromosikan inovasi ramah lingkungan yang melestarikan warisan budaya sekaligus memperkuat daya saing industri batik rumahan.
Akuisisi Data Arduino pada Reaktor Macro TGA Berbasis Microwave Taqy, Ibadurrohman Muhammad; Samsudin Anis; Hilal Rozaq Akbar
J-Proteksion: Jurnal Kajian Ilmiah dan Teknologi Teknik Mesin Vol. 10 No. 1 (2025): J-Proteksion
Publisher : Universitas Muhammadiyah Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32528/jp.v10i1.3987

Abstract

Penelitian ini merancang dan mengembangkan sistem akuisisi data berbasis Arduino Mega 2560 yang diintegrasikan dengan reaktor macro TGA berbasis microwave. Sistem ini mengombinasikan sensor suhu termokopel tipe K dengan modul MAX6675 dan sensor berat load cell kapasitas 1 kg dengan modul HX711 untuk mengamati perubahan termal dan massa selama proses pemanasan berlangsung. Absorber berbahan karbon aktif ditempatkan di dalam ruang pemanasan guna meningkatkan distribusi panas dan mengurangi gangguan sinyal akibat interferensi gelombang mikro. Data dari kedua sensor dikirim secara langsung ke Microsoft Excel melalui perangkat lunak PLX-DAQ, sehingga memungkinkan pemantauan dan pencatatan data secara real-time. Hasil uji coba menunjukkan bahwa sistem ini mampu merekam data suhu dan massa dengan ketelitian masing-masing sebesar 90,13% dan 99,33%, serta memiliki kestabilan pembacaan yang cukup baik meskipun terjadinya delay pembacaan. Dengan fleksibilitas, keterjangkauan biaya, serta kemudahan integrasi, sistem ini memberikan solusi efektif sebagai alternatif dari peralatan TGA konvensional yang umumnya tertutup dan mahal. Temuan ini diharapkan dapat mendorong pengembangan lebih lanjut dalam riset sistem akuisisi data termogravimetri berbasis reaktor microwave.
Co-Authors - Basyirun - Soedartono A. P. Bayuseno Abdul Aziz Achmad Erlangga Bintang Samodra Adhi Kusumastuti Afindala, Ajib Agus Prasetyo Agustinus Purna Irawan Agustinus Purna Irawan Ahmad, Aminullah Ahmad, Aminullah Al Ichlas Imran Aldias Bahatmaka Anas, Fahrudin Anwar Johari Ar Rasyid, Moh. Rizal Ardhianto, Mochamad Marte Atika Atika Azhari, Wildan  Budiandono, Galuh Nur Cholifah, Ayu Cionita, Tezara Danang, Setio Wardana Desyandri Desyandri Djuniadi Djuniadi Dwi Widjanarko Eko Supraptono Faadhil, Muhammad Faadhil, Muhammad Fahira, Jian Feddy Setio Pribadi Fitriyana, Deni Fajar Gustomo, Gigih Heri Yudiono Hidayatulloh, Choirul Fatah Hilal Rozaq Akbar I Made Sudana Iman Taka, Buyung Imran, Al Ichlas Indarsih, Fitria Retno Januar Parlaungan Siregar Januar Parlaungan Siregar Junaedi, Thomas Kalatharan, Sujentheran Nair Kamis, Arasinah Karnowo - Khoiron, Ahmad Mustamil Kuntoro, Tri Latifah, Ana M Burhan R Maftukin, M Maftukin, M. Manalu, Janviter Marlangen, Retno Maryanto, Luthfi Eka Maryanto, Luthfi Eka Masugino Moch. Taufiq Ichsan Mufid, Faishal Muhammad Afrizal Muhammad Khumaedi Mustikawati, Diana Langgeng Najibulloh, Gunawan Muhammad Najibulloh, Gunawan Muhammad Nandang Mufti Nisriinaa, Choirun Noor Hudallah Novitasari, Neny Nur Aini, Intan Nur Qudus P Pramono Pangestu, Pulih Phusavat, Kongkiti Pratiwi, Wikanti Prayogo, Wisnu Rini Kusumawardani, Rini Risky Ismail Rizqi Fitri Naryanto Rosidah Rosidah Rozanna Dewi Rr. Poppy Puspitasari Rusdarti - Rusiyanto Rusiyanto, Rusiyanto SATRIA, ANAS Siregar, Januar Parlaungan Sonika Maulana Sugiarto, Dedi Suharno, Muhamad Sukarni Sukarni Sunarto Sunarto Sus Widayani, Sus Susanto Susanto Suwandi, Fakhri Fauzi Tamamudin, Mukhammad Taqy, Ibadurrohman Muhammad Tezara Cionita Tezara Cionita Titin Agustina Triyanto, Sandy Utomo, Okky Husnan Arya Vidiyanto, Bagus Prabowo Wicaksana, Yazid Surya Widya Aryadi Wijayanto, Etanto Heiliano Wildan  Azhari Windy Desti Puspitasari Wisnu Prayogo Yahya Zakaria Yeri Sutopo Yuris Setyoadi Zaenal Abidin Zainal, Z. A.