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All Journal Turbo : Jurnal Program Studi Teknik Mesin Haumeni Journal of Education Jurnal Teknik Terapan (J-TETA) Jurnal Pendidikan Teknik Mesin
Damianus Manesi
universitas nusa cendana
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering Other

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Penerapan Model PJBL untuk Meningkatkan Hasil Belajar CAD/CAM Siswa SMK Permesinan Kristo Atok; Fahrizal; Damianus Manesi
Jurnal Pendidikan Teknik Mesin Vol. 12 No. 2 (2025): Jurnal Pendidikan Teknik Mesin
Publisher : Program Studi Pendidikan Teknik Mesin Fakultas Keguruan dan Ilmu Pendidikan Universitas Sriwiajaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jptm.v12i2.117

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh penerapan model pembelajaran Project Based Learning (PjBL) terhadap hasil belajar siswa pada mata pelajaran Gambar Manufaktur sistem CAD/CAM di SMK Negeri 2 Kupang. Penelitian ini menggunakan pendekatan kuantitatif dengan desain eksperimen semu. Subjek penelitian terdiri dari 64 siswa kelas XI Teknik Pemesinan yang dibagi menjadi dua kelompok, yaitu kelompok eksperimen yang mendapatkan pembelajaran berbasis proyek, dan kelompok kontrol yang menggunakan metode konvensional. Pengumpulan data dilakukan melalui tes pre-test dan post-test, observasi keaktifan siswa, serta kuesioner persepsi. Hasil analisis data menunjukkan bahwa terdapat peningkatan hasil belajar yang signifikan pada kelompok eksperimen dibandingkan dengan kelompok kontrol. Uji-t independen menunjukkan nilai signifikansi < 0,05. Selain itu, pembelajaran berbasis proyek juga meningkatkan keaktifan siswa dan mendapat tanggapan positif dari mayoritas peserta didik. Dengan demikian, PjBL efektif digunakan untuk meningkatkan pemahaman dan keterampilan siswa dalam pembelajaran CAD/CAM berbasis digital
Model Hubungan Manajemen Pembinaan dan Lingkungan Pendidikan Terhadap Karakter Kepemimpinan Kadet Unhan RI Ansori Zaini; Damianus Manesi; Imanuel A. Tnunay; Raymundus P. Situmorang; Yosy Gustasya
Haumeni Journal of Education Vol 6 No 1 (2026): Edisi Juni 2026
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/haumeni.v6i1.27736

Abstract

This study aims to analyze the relationship between mentoring management and the educational environment on the leadership character of cadets in the Ship Machinery Study Program at the Indonesian National Defense University. The study employs a quantitative approach with an associative design. The study population consisted of 75 cadets, all of whom were included in the sample using total sampling. Data were collected using a Likert-scale questionnaire that had been tested for validity and reliability, and then analyzed using multiple linear regression. The results indicate that both training management and the educational environment, both partially and simultaneously, have a positive and significant effect on cadet leadership characteristics. Training management is the most dominant variable in influencing leadership. Simultaneously, the two variables contribute 46.4% to leadership character. These findings indicate that the development of cadet leadership character requires integration between structured training and a conducive educational environment. This study recommends improving the quality of training management as well as strengthening academic culture and discipline as strategic efforts to develop excellent and integrity-driven cadet leadership
Uji kinerja mesin pemecah kulit kemiri tipe impact rotary Fahrizal Fahrizal; Sealtial Mau; Damianus Manesi; Tri Mandala Putra
TURBO [Tulisan Riset Berbasis Online] Vol 15 No 1 (2026): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v15i1.5011

Abstract

An impact rotary–type candlenut shelling machine utilizes centrifugal force to strike candlenuts that fall by gravity, projecting them outward to collide with the chamber wall. This method is expected to provide higher shelling efficiency than existing techniques. This study aimed to examine the effect of blades rotational speed on shelling efficiency. An experimental approach with a randomized design was employed, using rotational speed as a single factor with four levels: 850, 980, 1140, and 1300 rpm. Candlenuts were obtained from farmers in Amarasi District, Kupang Regency. The candlenuts were dried in the sun for 5 days before testing. Data collection was carried out by testing a shelling machine according to the experimental design. The results of the study found that the higher the rotation speed of the blades, the higher of capacity. Shelling efficiency was evaluated by measuring the weight of shelled candlenuts from each treatment. The results of the study found that the higher the rotation speed, the higher the capacity. However, the highest shelling efficiency was achieved at 850 rpm, the lowest effective speed. At this speed, the output consisted of 33.03% whole kernels, 30.33% semi-broken kernels, 15.9% crushed kernels, and 20.74% kernels with adhering shell fragments.
Analisis Kinerja dan Efisiensi Alat Uji Nozzle Injector Diesel Berbasis Limbah Hydraulic Jack Julianro Elvis Sunbanu; Damianus Manesi; Wofrid E Bianome
Jurnal Teknik Terapan Vol. 5 No. 1 (2026): April
Publisher : P3M Politeknik Negeri Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25047/jteta.v5i1.117

Abstract

The limited availability of affordable and reliable diesel nozzle injector testing devices remains a significant constraint in small-scale workshops and mechanical engineering laboratories. In fact, the performance of a nozzle injector plays a critical role in determining fuel atomization quality, which directly affects combustion efficiency and exhaust emissions. This study aims to develop and evaluate the performance of a diesel nozzle injector testing device based on a recycled hydraulic jack as a cost effective and appropriate technology solution. The research employed a Research and Development (R&D) method with an experimental approach, including system design using SketchUp software, prototype fabrication and assembly, and performance testing. Experiments were conducted in five repetitions for each parameter, measuring maximum pressure, pressure stability after 10 seconds (P10s), and spray characteristics in terms of angle and width. The data were analyzed quantitatively using mean, standard deviation, coefficient of variation, as well as efficiency and effectiveness calculations. The results show that the device achieved an average pressure of 257 kg/cm² with a coefficient of variation below 20% and a pressure drop of approximately 7%, which falls within the standard operating range of conventional diesel nozzles (200-300 kg/cm²). The spray pattern exhibited a fan shape with an average angle of 19.67° and a width of 10.4 cm, indicating stable atomization performance. The system efficiency reached 93%, while the effectiveness was 33.3%, suggesting the need for improvement in pressure control.
Co-Authors Ansori Zaini Fahrizal Fahrizal Imanuel A. Tnunay Julianro Elvis Sunbanu Kristo Atok Raymundus P. Situmorang Sealtial Mau Tri Mandala Putra Wofrid E Bianome Yosy Gustasya