Studi Eksperimental Mekanisme Cantilever Piezoelectric Energy Harvesting dengan Variasi Tip Mass dan Jumlah Cantilever Piezoelectric

Simamora, Yehuda (2026) Studi Eksperimental Mekanisme Cantilever Piezoelectric Energy Harvesting dengan Variasi Tip Mass dan Jumlah Cantilever Piezoelectric. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Getaran pada rel kereta api yang terjadi akibat kereta melintas merupakan energi mekanik yang selama ini belum dimanfaatkan secara optimal. Salah satu cara untuk memanfaatkan energi tersebut adalah menggunakan piezoelectric cantilever yang dapat mengubah energi mekanik menjadi energi listrik. Penelitian ini bertujuan untuk mengetahui pengaruh variasi tip mass dan jumlah piezoelectric cantilever terhadap frekuensi natural, tegangan, dan daya listrik yang dihasilkan, serta menentukan konfigurasi yang memberikan kinerja terbaik sebagai sistem energy harvesting.
Penelitian dilakukan secara eksperimental menggunakan modal shaker sebagai sumber eksitasi untuk mensimulasikan getaran rel vertikal kereta api. Variasi yang digunakan meliputi tip mass sebesar 0,8 gram, 1 gram, dan 1,2 gram, serta jumlah piezoelectric cantilever sebanyak 1, 5, dan 10 buah yang disusun secara seri. Pengukuran percepatan dilakukan menggunakan accelerometer dan PicoScope, sedangkan tegangan keluaran diukur menggunakan oscilloscope. Data kemudian dianalisis menggunakan metode Root Mean Square (RMS) dan Fast Fourier Transform (FFT) untuk memperoleh nilai magnitudo fungsi alih H(f) serta menentukan frekuensi natural H(fn) dari piezoelectric.
Hasil penelitian menunjukkan bahwa penambahan tip mass menyebabkan frekuensi natural sistem menurun sehingga karakteristik respons getaran berubah. Selain itu, penambahan jumlah piezoelectric cantilever yang disusun secara seri meningkatkan tegangan keluaran sistem. Tegangan dan daya yang dihasilkan dipengaruhi oleh kombinasi tip mass dan jumlah piezoelectric yang digunakan. Berdasarkan hasil penelitian, variasi tip mass dan jumlah piezoelectric cantilever memberikan pengaruh terhadap performa sistem energy harvesting. Pemilihan konfigurasi yang sesuai dapat meningkatkan kemampuan sistem dalam memanen energi dari getaran rel kereta api sehingga berpotensi dimanfaatkan sebagai sumber energi alternatif.
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Railway track vibrations generated by passing trains contain mechanical energy that has not been utilized optimally. One approach to harvesting this energy is by using a piezoelectric cantilever, which converts mechanical vibration into electrical energy. This study aims to investigate the effects of tip mass variation and the number of piezoelectric cantilevers on the natural frequency, output voltage, and electrical power generated, as well as to determine the configuration that provides the best performance for a vibration-based energy harvesting system.
An experimental study was conducted using a modal shaker to simulate vertical railway track vibrations under laboratory conditions. The experiments were performed using tip mass variations of 0.8 g, 1.0 g, and 1.2 g, combined with 1, 5, and 10 piezoelectric cantilevers connected in series. Acceleration responses were measured using an accelerometer and a PicoScope, while the output voltage was recorded using an oscilloscope. The measured data were analyzed using the Root Mean Square (RMS) method and Fast Fourier Transform (FFT) to determine the magnitude of the Frequency Response Function (FRF), and the natural frequency, H(fn), of the piezoelectric cantilever.
The experimental results indicate that increasing the tip mass reduces the natural frequency of the system, leading to changes in its dynamic response. In addition, increasing the number of piezoelectric cantilevers connected in series increases the output voltage. The generated voltage and electrical power are influenced by the combination of tip mass and the number of piezoelectric cantilevers. Overall, the results demonstrate that both parameters significantly affect the performance of the energy harvesting system. Selecting an appropriate configuration can improve the capability of the system to harvest vibration energy from railway tracks, making it a promising alternative power source.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Piezoelectric, Tip Mass, Frekuensi Natural, Modal Shaker. Piezoelectric, Tip Mass, Natural Frequency, Modal Shaker.
Subjects:	T Technology > TJ Mechanical engineering and machinery
Divisions:	Faculty of Industrial Technology > Mechanical Engineering > 21201-(S1) Undergraduate Thesis
Depositing User:	Yehuda Isaiah Nabisuk Simamora
Date Deposited:	29 Jul 2026 03:53
Last Modified:	29 Jul 2026 03:53
URI:	http://repository.its.ac.id/id/eprint/139298

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