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All Journal Traksi : Majalah Ilmiah Teknik Mesin SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Jurnal METTEK (Jurnal Ilmiah Nasional Dalam Bidang Ilmu Teknik Mesin) SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Barometer INFOMATEK: Jurnal Informatika, Manajemen dan Teknologi Quantum Teknika Jurnal Mesin Nusantara ARMATUR : Artikel Teknik Mesin dan Manufaktur Jurnal Sains dan Teknologi JURNAL POLI-TEKNOLOGI Tedc Journal of Mechanical and Manufacture
Aa Santosa
Fakultas Teknik – Universitas Singaperbangsa Karawang
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ANALISA TEGANGAN PADA STRUKTUR TRUSS DENGAN MENGGUNAKAN SOFTWARE INVENTOR Roni Panji; Iwan Nugraha; Aa Santosa
Jurnal TEDC Vol 16 No 3 (2022): JURNAL TEDC
Publisher : UPPM Politeknik TEDC Bandung

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Abstract

Truss Merupakan suatu bentuk struktur yang sangat komplek karena mempunyai batang-batang dengan arah gaya yang berbeda-beda. Telah dilakukan suatu penelitian terhadap Truss dengan berat beban sebesar 36 Ton, dari hasil perhitungan secara manual didapatkan beberapa nilai seperti batang yang digunakan ada 7 buah batang dimana batang 1 mengalami beban tarik, batang 2 mengalami beban tekan, batang 3 mengalami beban tarik, batang 4 mengalami beban tekan, batang 5 mengalami beban tekan, batang 6 mengalami beban tarik dan batang 7 mengalami beban tekan [1] Material yang digunakan untuk analisa struktur ini adalah A36 yang mempunyai sefat mekanik Tegangan Putus minimun 370 Mpa, Tegangan leleh minimum 240 Mps dan regangan 20 %. Dari hasil simulasi yang dilakukan menggunakan software Inventor menghasilkan beberapa hasil seperti : Displecement yang terjadi akibat gaya sebesar 36 Ton adalah 0,29 in, tegangan normal yang terjadi maksimal sebesar 10,18 Ksi, Momen yang terjadi akibat gaya sebesar 3,164e-06 lbforce in, sangat kecil sekali berari struktur trus ini mempunyai kekakuan yang baik [2].
Pengaruh Temperatur Pemanasan pada Proses Penempaan Pembuatan Katup Gas Shelo Sujendro; Ratna Dewi Anjani; Aa Santosa
Quantum Teknika : Jurnal Teknik Mesin Terapan Vol 5, No 1 (2023): October
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jqt.v5i1.19113

Abstract

Manufacturing of valves generally uses brass alloy materials and is carried out using a forging process. In this research, the aim is to determine the effect of variations in heating temperature in the valve manufacturing process on the hardness value, microstructure, and shape changes that occur. This research method uses this research method, using an experimental method with temperature variations tested of (300˚, 400˚, and 500 ˚Celsius) with an unchanged compressive force and brass raw material with specifications Cu = 57%. Results of observations that occurred namely Hardness Testing, the lower the heating temperature, the higher the resulting hardness value, which is 69 HRb, 66 HRb, and 59 HRb. When the shape changes, the higher the temperature, the more flash you get, and the lighter the forging force on the forging tool. In the microstructure, as a result of temperature differences, each grain structure characteristic will be different, increasing temperature and forging pressure will change the grain structure.
Analisa Pengaruh Bentuk Sudut Pada Baja Castellated Dengan Menggunakan Metode Finite Element Aa Santosa
Jurnal Poli-Teknologi Vol. 19 No. 2 (2020)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v19i2.2805

Abstract

This study examines Kastella beams with cantilever structures using a non-prismatic profile to optimize the steel cross section in resisting external loads. In this study IWF 2500×250×20 steel profile was used. Analysis using finite element with 360 computer fusion program which is a product of Autodesk, as a calculation program to determine the value of the voltage and displacement that occurs in the beam. The process of making castella steel is by perforating the steel profile I into a hexagon with an angle that varies from 45º to 70º, or by cutting the steel profile and then reassembling it by welding it. The research was carried out using 45o and 60o tilt angles, it aims to determine the maximum tilt angle in terms of strength that can withstand loads, both stress and displacement. The simulation process is carried out using a 2000 N load, using A36 material. Based on the research results obtained parameters in the form of stress and displacement. The stresses on castella steel with a slope angle of 45o and 60o are 0.70 Mpa and 0.71 Mpa, respectively. The displacement of the castella steel with a tilt angle of 45o and 60o is 0.002 mm and 0.019 mm, respectively. The results showed that the castella beam with smaller hole angular dimension variations resulted in lower stress values in the structure and the remaining cutting in the optimal test specimen, but produced a large displacement value.
Thermal Cycle Simulation of Welded Products with Heat Treatment Process on AISI 1015 Low Carbon Steel Aa Santosa; Tedi Heryanto; Iman Dirja; fahri rizki
Jurnal Mekanika dan Manufaktur Vol 5 No 2 (2026)
Publisher : Universitas Majalengka

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Abstract

In the welding of carbon steel, the cooling time from the highest temperature or peak temperature can be identified, where the cooling rate is generally represented in a welding thermal cycle. Knowledge of the welding thermal cycle greatly facilitates the understanding of the extent of differences in cooling rates at various applied peak temperatures. The thermal cycle curve can be obtained through direct testing methods, namely by measuring the temperature on the welded plate. However, this method requires extensive equipment and a high level of precision. Therefore, the author conducted an experiment to obtain the thermal cycle curve using an alternative method. This method involves heat treatment, in which the cooling process is carried out in free air (normalizing) while varying the peak temperature for each specimen. The specimens used in this study were AISI 1015 low-carbon steel, with dimensions of 100 × 20 × 20 mm for the larger specimens and 50 × 20 × 20 mm for the smaller specimens. The applied peak temperatures were 750°C, 800°C, 900°C, and 1000°C. The experimental results showed that the cooling rate obtained through the heat treatment process was inversely proportional to that of the welding process. Therefore, determining the thermal cycle using the heat treatment process is not recommended.
Perancangan Inkubator Telur Puyuh Otomatis Berbasis IoT dengan Sistem Pemantauan Jarak Jauh Menggunakan Spreedsheat Alvin Ardiniansyah; Reza Setiawan; Aa Santosa; Bhisma Mahendra
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol. 7 No. 2 (2026): Jurnal Armatur (in Progress)
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/armatur.v7i2.11651

Abstract

The research method used was an experimental comparative approach by comparing the performance of an IoT-based automatic incubator with a conventional incubator. The automatic incubator utilized an ESP32 microcontroller, DHT22 temperature and humidity sensor, heating lamps, exhaust fan, and automatic egg turning system using a servo motor. Monitoring data were transmitted via internet connection for real-time observation with spreadsheet. Each incubator was tested using 30 quail eggs during an incubation period of 18 days.The results showed that the IoT-based incubator was able to maintain temperature stability within the range of 37.2°C–38.2°C and humidity between 60%–68%. Meanwhile, the conventional incubator experienced larger temperature fluctuations ranging from 35.4°C to 40.0°C. The automatic incubator achieved a hatchability rate of 90% with an average hatch weight of 8.9 g, while the conventional incubator only achieved 70% hatchability with an average hatch weight of 7.8 g. Based on the results, the IoT-based automatic incubator demonstrated better performance in maintaining incubation stability and improving hatchability efficiency compared to the conventional system. The implementation of IoT technology also enabled real-time monitoring and automatic control, making the incubation process more effective and efficient.
Perancangan dan Pembuatan Mesin Pemotong PCB Dengan Mekanisme Gerak Linear Berbasis Arduino Uno Fathur Muhammad; Aa Santosa; Rizal Hanifi
Jurnal Mesin Nusantara Vol 9 No 1 (2026): Jurnal Mesin Nusantara
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/jmn.v9i1.26630

Abstract

Perkembangan industri manufaktur elektronik di Indonesia mengalami pertumbuhan yang signifikan. Berdasarkan data Badan Koordinasi Penanaman Modal (BKPM), nilai investasi sektor industri elektronik meningkat sebesar 12,8% pada tahun 2023 dibandingkan tahun sebelumnya. Printed Circuit Boards (PCB) merupakan komponen penting dalam perangkat elektronik seperti komputer, ponsel, dan alat elektronik lainnya. Berdasarkan observasi di PT. Sharp Electronics Indonesia, proses pemotongan PCB masih banyak dilakukan secara manual, sehingga sering menimbulkan hasil potongan yang tidak presisi. Maka dari itu, metode yang digunakan dalam penelitian ini adalah eksperimen yang mencakup perancangan, pembuatan dan menguji mesin pemotong PCB yang bertujuan untuk memotong PCB mendapatkan hasil yang bagus, rapih dan presisi. Adapun spesifikasi mesin sebagai berikut: Mesin pemotong PCB dengan dimensi 30 cm x 30 cm dilengkapi dengan menggunakan motor DC 24V dengan 30.000 rpm, power suply DC, Arduino uno, linear servo actuator, IR Module Infrared Barrier Sensor, saklar sentuh dan rangka mesin yang terbuat dari material kayu backlite.
Pengaruh Variasi Ketebalan Komposit Serat Kelapa terhadap Koefisien Absorpsi Bunyi pada Frekuensi Rendah Raihan Arsy Wildani Hidayat; Rizal Hanifi; Aa Santosa
INSOLOGI: Jurnal Sains dan Teknologi Vol. 4 No. 3 (2025): Juni 2025
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/insologi.v4i3.5687

Abstract

This study aims to investigate the effect of coconut fiber composite thickness on the sound absorption coefficient using a two-microphone impedance tube. The composites were fabricated with thickness variations of 1 cm and 2 cm using the hand lay-up method, with polyester resin as the matrix and coconut fiber as the reinforcement. The tests were conducted at frequencies of 400 Hz, 450 Hz, and 500 Hz. Data processing was carried out using LabVIEW and MATLAB software. The results show that the composite with a thickness of 2 cm exhibited a higher sound absorption coefficient compared to the 1 cm thickness across all tested frequencies. The highest sound absorption coefficient was recorded at 0.175 at 400 Hz for the 2 cm thickness. However, the absorption capability significantly decreased at higher frequencies, particularly for the 1 cm thickness, which showed no absorption at 500 Hz. These findings indicate that coconut fiber has potential as an environmentally friendly sound-absorbing material, especially in the low-frequency range.
Co-Authors Aceng Hilman Muhammad Mazid Aceng aldi sulaeman Alvin Ardiniansyah Andi Angga Restu Pahlawan Aripin Aripin Aswatul Sahrul Bhisma Mahendra Dhimas Aditia Eri Widianto Eri Widianto fahri rizki Farradina Choria Suci Fathur Muhammad Ferry Restianto Iman Dirja Iwan Nugraha Iwan Nugraha Jojo Sumarjo Kardiman Kardiman - Marno, Marno Maulana Candra Muhkti Mohamad Indrawan Muhamad Jimi Muhammad Imron Permana Naubnome, Viktor Naufal Yosi Laksana Nolih Oleh Oleh Raihan Arsy Wildani Hidayat Ramlah Ratna Dewi Anjani Reza Setiawan Rizal Hanifi Roni Panji Shelo Sujendro Tedi Heryanto Viktor Noubnome