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All Journal Sinergi JTTM: Jurnal Terapan Teknik Mesin
Abdul Hamid
Universitas Mercu Buana
Aerospace Engineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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IMPLEMENTATION OF FREQUENCY RESPONSE FUNCTION ON TAPPER BEARING MAINTENANCE Ari Susanto; Setyo Qomarudin Yusuf; Abdul Hamid; Haris Wahyudi; Subekti Subekti
SINERGI Vol 23, No 2 (2019)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (656.129 KB) | DOI: 10.22441/sinergi.2019.2.006

Abstract

Bearing acts as a pad that supports a shaft to rotate without excessive friction, hold the radial load and maintain the motion towards the left and right shafts (Thrust Load) when turning together. Due to frequent taper bearing damage to the wheels, predictive maintenance is therefore necessary. One of the predictive maintenance methods widely used today is vibration analysis. The principles of vibration-based bearing damage detection using the Frequency Response Function (FRF) method will be shown in this paper. Harmonics signal is given to the bearing surface in a vertical or perpendicular direction to the taper bearing surface. The vibration response measurement was carried out on three axes (x, y, and z). The results of this study indicated the ability of FRFs to predict any damage on the bearing taper.  
INSPECTING A BUMP TEST IN THE MAINTENANCE OF A 1200-CC DAIHATSU SIGRA DISC BRAKE Subekti Subekti; Abdul Hamid; Basuki Dwi Effendy; Agung Wahyudi Biantoro
SINERGI Vol 23, No 3 (2019)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1797.578 KB) | DOI: 10.22441/sinergi.2019.3.003

Abstract

A motorized vehicle needs a system that can not only reduce the speed and stop the vehicle but can also serve as a safety tool and ensure a safe distribution which is called a braking system. It is important to conduct maintenance of a disc brake that is part of the braking system. Therefore, this study developed a technique to inspect a 1200-cc Daihatsu Sigra disc brake through the vibration measurement using a bump test. A disc brake is comprised of three fields:  A (located next to the center of the disc brake), B ( in the middle diameter), and C ( in the outer diameter of the disc brake). Each field has ten measurement points. This study showed that disc brake damages occurring in field A were at points 1-3, and they appeared after the  250-Hz frequency. Meanwhile, in fields B and C, at all measurement points, there were no changes taking place at any frequency.
DYNAMIC CHARACTERIZATION OF BALL BEARING IN TURBINE PROPELLER USING BUMP TEST METHOD Monika Audiya Pratiwi; Muhammad Ikhsan; Rio Duzan Octavianto; Abdul Hamid; Subekti Subekti
SINERGI Vol 25, No 2 (2021)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2021.2.004

Abstract

Bearing is an essential component in a mechanical rotating equipment system. It is no less important than lubrication to prevent wear is very important to consider in the mechanical maintenance system of rotating equipment. Bearing wear is one of the problems in wind turbines that will increase maintenance costs, shorten the wind turbines' lifespan, and cause the component or overall damage to the wind turbine. The latest technology has provided instruments for analyzing the damage of elements in a bearing according to the caused vibrations. Therefore, this study was performed on Ball Bearing Turbine Propeller to identify the dynamic characteristics of Ball Bearing with and without lubrication. The test was carried out using the Bump Test method applied in three measured parts: X, Y, and Z axes. The measuring instrument which was used was Fast Fourier Transform (FFT) Analyzer (Ono Sokki) and the data were analyzed using MATLAB. It was identified that the application of oil could reduce the amplitude and decrease the frequency. Personal frequency appearing more than once indicates the existence of global vibration modes. The frequency which only appears once in the measurement spot indicates local vibration modes. The highest frequency both after and before the application of oil was found in the Y-axis.
THE INVESTIGATION OF END MILL FEEDS ON CNC ROUTER MACHINE USING VIBRATION METHOD Agung Wahyudi Biantoro; Heru Maryanto; Arif Kusnan Hidayanto; Abdul Hamid
SINERGI Vol 24, No 2 (2020)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (799.064 KB) | DOI: 10.22441/sinergi.2020.2.005

Abstract

Vibration on End Mill Feeds will occur due to friction between the workpiece and end mill. The friction which occurs will cause tool wear in the insert blade. At this point, the tool wear experienced by the end mill can be seen from the imperfect feed of the workpiece that is resulted. Therefore, it is necessary to find out a method that can quickly and accurately detect tool wear at the end mill. The one that was experimented in this study was the vibration method. The vibration response was measured at their x, y, and z axes with rotation speeds of 2500 rpm, 3500 rpm, and 4500 rpm. At the broken end mill, it was shown that frequencies resulted did not affect the rotation while in the standard end mill. The initial frequency was highly influenced by spindle rotations treated on it.
PERANCANGAN BEJANA TEKAN (PRESSURE VESSEL) UNTUK SEPARASI 3 FASA Abdul Aziz; Abdul Hamid; Imam Hidayat
SINERGI Vol 18, No 1 (2014)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (519.645 KB)

Abstract

Perancangan bejana tekan ini menggunakan metode yang disesuaikan dengan kemajuan teknologi, dimana begitu banyak aplikasi yang digunakan dalam dunia kerja salahsatunya dengan software PV Elite. Dalam perancangan ini penulis menggunakan material untuk dinding bejana (shell) dan kepala bejana (head) SA-516 Grade 70. dengan desain tekanan = 3,1 MPa dan mempunyai dimensi panjang bejana tekan (Seamless/Seamless)= 5900 mm, dengan diameter (D) = 2140 mm dengan Corrosion Allowance = 6 mm. Dan dari perhitungan aplikasi PV Elite ketebalan shell yang didapat untuk bejana tekan tersebut adalah 30,45 mm sedangkan perhitungan manual adalah 29,84 mm. Untuk ketebalan kepala (head) bejana tekan berdasarkan perhitungan PV Elite didapat 30,18 mm sedangkan perhitungan secara manual ketebalan kepala (head) adalah 17,92 mm. Tekanan yang maksimal berdasarkan PV Elite adalah untuk Head = 5,1356 MPa dan Shell = 5,0418 MPa, sedangkan hasil dari perhitungan manual untuk Head = 1,0144 MPa dan untuk Shell = 3,9102 MPa.
Perhitungan Ulang Beban Pendinginan Pada Ruang Auditorium Gedung Manggala Wanabakti Blok III Kementerian Kehutanan Jakarta Sabaruddin Harahap; Abdul Hamid; Imam Hidayat
SINERGI Vol 18, No 3 (2014)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (213.246 KB)

Abstract

Ruang Auditorium Gedung Manggala Wanabakti diresmikan sejak 24 Agustus 1983 yang merupakan salah satu ruang yang multifungsi diantaranya sebagai ruang rapat/kongres, seminar, wisuda, pameran dan pegelaran, serta resepsi pernikahan. Perhitungan beban pendinginan pada gedung ini menggunakan metode CLTD (Cooling Load Temperature Difference). Perhitungan beban pendinginan berdasarkan data sekunder yang kemudian hasilnya dibandingkan dengan kapasitas beban pendinginan terpasang. Dari hasil perhitungan beban pendingin di atas dapat disimpulkan bahwa kapasitas mesin AHU (Air Handling Unit) yang terpasang belum mencukupi dalam memenuhi kebutuhan sistem penyegaran udara pada ruang Auditorium  Gedung Manggala Wanabhakti Kementerian Kehutanan RI.
EVALUASI PENURUNAN TEKANAN PADA PEMIPAAN SISTEM UDARA BERTEKANAN DI PT. INDOFOOD SUKSES MAKMUR (BOGASARI FLOUR MILL) Abdul Hamid; Hilman Muwardi
SINERGI Vol 17, No 3 (2013)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (810.736 KB)

Abstract

Sistem pemipaan udara bertekanan bertujuan untuk mendistribisikan udara bertekanan dari mesin penghasil udara bertekanan. Dalam kondisi nyata sistem tersebut tidak terlepas dari rugirugi dalam hal ini adalah penurunan tekanan sepanjang jalur distribusi. Penurunan tekanan dalam jalur distribusi disebabkan oleh tiga faktor yaitu akibat gesekan sepanjang jalur pemipaan (rugi-rugi mayor), sambungan (fitting) sepanjang jalur pipa (rugi-rugi minor) dan penurunan tekanan akibat komponen penunjang. Dalam penelitian ini kita akan menghitung seberapa besar penurunan tekanan yang terjadi sepanjang pipa distribusi maupun yang disebabkan oleh komponen penunjang yang ada di PT.Indofood Sukses Makmur. Dalam menghitung penurunan tekanan sepanjang jalur distribusi dibutuhkan data-data penunjang, seperti flowrate, tekanan dan pemipaan. Data-data tersebut didapat berdasarkan hasil pengukuran dan pengujian di lapangan, kondisi nyata yang ada maupun dari informasi yang didapat.  Dari data-data di atas tersebut setelah dilakukan pengolahan secara teoritis maka didapatkan hasil, yaitu penurunan tekanan yang paling besar terdapat pada plant Mill KL dimana penurunan tekanan yang ada mencapai 221682.43 Pa atau sekitar 32.15 Psi. Sedangkan penurunan tekanan paling kecil terdapat pada plant packaging 1 kg yaitu ebesar 49153.68 Pa. Sedangkan persentase kontribusi penurunan tekanan untuk seluruh sistem udara bertekanan untuk rugi-rugi mayor sebesar 58 %, rugi-rugi minor 32.6 % dan komponen 9.4 %.
Tool study of waves energy converter with heaving constant of 3675 N/m Imam Fauzie; Wiwit Suprihatingsih; Abdul Hamid
JTTM : Jurnal Terapan Teknik Mesin Vol 6 No 1 (2025): JTTM: Jurnal Terapan Teknik Mesin
Publisher : Teknik Mesin - Universitas Muhammadiyah Cileungsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37373/jttm.v6i1.1207

Abstract

As technology develops, the need for renewable energy is increasing. Ocean wave energy is one type of renewable energy and has high potential due to its abundant availability and unlimited potential range. A wave energy converter is a system that can capture wave energy and convert it into electrical energy. A simple form of periodic motion is an object vibrating at the end of a spring. Therefore it is called simple harmonic motion. The purpose of this study is to verify the performance of the wave energy converter (WEC) pontoon lift vibration based on the principle of forced undamped vibration using the spring constant value to produce optimal electrical energy. This research was conducted by experimental tests on land and on the coast of Tanjung Pasir, Tangerang. The heaving method was used to realize the use of springs in the wave energy converter (WEC). Heaving is the vertical up-and-down motion of a floating structure on undulating water. The lifting motion of a floating structure is the vibration that causes a backward force when the structure is moved from its balanced position. The results of data analysis of the identification of the smallest ocean potential energy without planets using planetary energy reached 0.095 watts, the maximum was 0.986 watts, the smallest reached 121 watts, and the largest reached 955 watts. The resulting speed value is 71.57 rpm and the maximum result is 85.12 rpm. Based on these data, we can produce larger data, which is 955 watts
Co-Authors Abdul Aziz Agung Wahyudi Biantoro Ari Susanto Arif Kusnan Hidayanto Basuki Dwi Effendy Haris Wahyudi Heru Maryanto Hilman Muwardi Imam Fauzie Monika Audiya Pratiwi Muhammad Ikhsan Rio Duzan Octavianto Sabaruddin Harahap Salsabila, Unik Hanifah Setyo Qomarudin Yusuf Subekti Subekti Wiwit Suprihatingsih