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All Journal Jurnal Teknik Mesin Indonesia Mekanika: Majalah Ilmiah Mekanika Journal of Electrical, Electronic, Information, and Communication Technology (JEEICT) Jurnal Foundry
Didik Djoko Susilo
Department Of Mechanical Engineering, Universitas Sebelas Maret, Surakarta.
Aerospace Engineering Automotive Engineering Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Pengaruh bahan kampas rem terhadap respon getaran pada sistem rem cakram Muhammad Mushlih Elhafid; Didik Djoko Susilo; Purwadi Joko Widodo
Jurnal Teknik Mesin Indonesia Vol 12 No 1 (2017): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (659.092 KB) | DOI: 10.36289/jtmi.v12i1.28

Abstract

This study aims to determine the effect of brake pads material to the vibration response of disc brake system on many variety of braking conditions. The variations of brake pads material on this research such as metallic, non-asbes and ceramic. The variations of braking operation such as speed of disc rotation and braking pressure. Each brake pads material tested by variation of disc rotation 425, 637, 850, 1062 rpm and pressure variation 0,5 bar, 1 bar, 1,5 bar. Furthermore, the dynamic characteristics of brake pad had been tested by using the method of Modal Analysis Experiment. The results showed that the type of brake pad materials, disc rotation and braking pressure affect to vibration response of disc brake system. Increasing speed of disc rotation and braking pressure will increase the excitation force causing value amplitude of vibration in the braking system increases. Usage of brake pad ceramic also showed the lowest amplitude of vibration for all variations of disc rotation and braking pressure. Because the ceramic brake pad have the lowest natural frequency, then the value of the damping ratio is high, so that decreasing amplitude of vibration that occurs in the braking system.
STUDI PENGARUH KOMPOSISI KIMIA DAN KETEBALAN CORAN TERHADAP STRUKTUR MIKRO BESI COR PADA KASUS PEMBUATAN BESI COR VERMICULAR Eko Surojo; Didik Djoko Susilo; Teguh Triyono; Nugroho Fajar Wicaksono
JURNAL FOUNDRY Vol. 2 No. 2 (2012): JURNAL FOUNDRY
Publisher : LPPM Politeknik Manufaktur Ceper

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Abstract

Tujuan penelitian ini adalah mempelajari pengaruh komposisi kimia dan ketebalan coran terhadap struktur mikro besi cor pada kasus pembuatan besi cor vermicular. Besi cor vermicular menarik diteliti karena memiliki kekuatan dan keuletan yang lebih tinggi dibandingkan dengan besi cor kelabu, serta memiliki konduktivitas panas, sifat damping, ketahanan panas dan kekuatan fatik yang lebih baik dibandingkan dengan besi cor nodular. Akan tetapi yang masih menjadi permasalahan adalah ketika proses pengecoran diperlukan komposisi kimia dan laju pendinginan yang tepat agar dihasilkan besi cor bergrafit vermicular. Terkait dengan hal itu, pada penelitian ini dilakukan perbandingan struktur mikro terhadap hasil coran dari sampel yang memiliki komposisi kimia dan ketebalan coran yang berbeda. Bahan besi cor dilebur menggunakan tungku induksi dan proses pemaduan Mg dilakukan di dalam ladel. Hasil penelitian ini menunjukkan bahwa jika komposisi kimia besi cor (% Mg minimal) mampu mendorong terbentuknya grafit nodular maka terdapat kecenderungan semakin tebal coran menyebabkan semakin besarnya kemungkinan terbentuknya grafit vermicular. Pada komposisi besi cor 2,63 %C; 2,41 %Si; 0,428 % %Mn; 0,006 %S; 0,07 %Mg; 0,015 %Ti; 0,067 %Cr; 0,019 %Mo; 0,043 %Ni; 0,009 %Al; 0,006 %Co; 0,12 %Cu; 0,007 %V; 0,024 %W dan ketebalan coran 40 mm mampu menghasilkan besi cor berstruktur vermicular.
Design of the Bengawan Unmanned Vehicle (UV) Roboboat: Mandakini Neo Haris Nubli; Fahri Setyo Utomo; Hananta Diatmaja; Aditya Rio Prabowo; Ubaidillah Ubaidillah; Didik Djoko Susilo; Wibowo Wibowo; Teguh Muttaqie; Fajar Budi Laksono
Mekanika: Majalah Ilmiah Mekanika Vol 21, No 2 (2022): MEKANIKA: Majalah Ilmiah Mekanika
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/mekanika.v21i2.61624

Abstract

Mandakini Neo was made with the ship's capacity, speed, and comfort in mind, as well as the ship's hydrodynamic performance and construction cost. Therefore, the method used to determine the hydrostatic characteristics is through a simulation consisting of a resistance test, stability test, maneuver test, and seakeeping test. The simulation uses Maxsurf software with the Savitsky method, which is then processed by data. Global Positioning System (GPS) and ultrasonic sensor tests were also conducted. Based on the simulation results, the stability of the Mandakini Neo ship has a GZ value of 0.1417 m with an angle of 30°, which follows the standards of the International Maritime Organization (IMO). In testing, the maneuvers obtained have met IMO standards based on tactical and advanced diameters. Based on the seakeeping test, when the speed is 5 knots, the heave movement has the same magnitude for all wave headings, 0.0096 m. while the most considerable rolling motion is in the wave direction of 135°, which is 0.36 m, and the most considerable pitch motion is in the direction of the 180° wave, which is 0.042 m. At a speed of 10 knots, the heave motion produced is the same as for all wave headings.
A Literature Review: Bearing Fault in BLDC Motor Based on Vibration and Thermal Signals Meiyanto Eko Sulistyo; Didik Djoko Susilo; Muhammad Nizam; Ubaidillah Ubaidillah
Journal of Electrical, Electronic, Information, and Communication Technology Vol 7, No 1 (2025): JOURNAL OF ELECTRICAL, ELECTRONIC, INFORMATION, AND COMMUNICATION TECHNOLOGY
Publisher : Universitas Sebelas Maret (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jeeict.7.1.100165

Abstract

This review of the literature looks into the use of vibration and thermal signals for the diagnosis and detection of bearing problems in brushless DC (BLDC) motors. The study highlights the efficacy of current developments in diagnostic algorithms and signal processing approaches in detecting bearing irregularities. The comparative study of vibration and heat monitoring techniques is highlighted, along with a discussion of each method's benefits and drawbacks. The integration of various methods for improved fault detection accuracy is also examined in the paper. The results indicate that a hybrid strategy that combines temperature analysis and vibration provides a reliable way to identify BLDC motor problems early on, which could enhance maintenance plans and operational dependability.
Co-Authors Aditya Rio Prabowo Eko Surojo Fahri Setyo Utomo Fajar Budi Laksono Hananta Diatmaja Haris Nubli Meiyanto Eko Sulistyo Muhammad Mushlih Elhafid Muhammad Nizam Nugroho Fajar Wicaksono Purwadi Joko Widodo Teguh Muttaqie Teguh Triyono Ubaidillah Wibowo Wibowo