Rancang Bangun Sensor Tekanan (Pressure) Berbasis Fiber Optik Plastik (POF) Komposit PMMA/PDMS Terdoping Zirconia (ZrO2)

Putri, Hesti Puspita (2026) Rancang Bangun Sensor Tekanan (Pressure) Berbasis Fiber Optik Plastik (POF) Komposit PMMA/PDMS Terdoping Zirconia (ZrO2). Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Perkembangan sensor tekanan berbasis serat optik plastik menjadi salah satu alternatif teknologi pemantauan karena memiliki keunggulan berupa ukuran kecil, ringan, tahan terhadap interferensi elektromagnetik, serta mampu merespons perubahan mekanik melalui perubahan intensitas cahaya. Namun, pengembangan material elemen sensing yang fleksibel, transparan, dan memiliki respons optik yang stabil masih menjadi tantangan, khususnya pada sensor tekanan berbasis komposit polimer. Penelitian ini bertujuan untuk merancang dan mengevaluasi potensi komposit PMMA/PDMS terdoping ZrO₂ sebagai elemen sensing beban tekan berbasis polymer optical fiber. Komposit dibuat dengan variasi konsentrasi ZrO₂ sebesar 0; 0,5; 1; dan 1,5 wt%, kemudian dikarakterisasi menggunakan FTIR, UV-Vis, dan DMA untuk mengetahui sifat kristal, gugus fungsi, sifat optik, serta respons viskoelastik material. Pengujian respons sensor dilakukan menggunakan sumber cahaya laser He-Ne, polymer optical fiber, optical power meter, holder sensor, serta beban standar anak timbangan pada rentang 1–5 kg setara dengan 0,981-4,905 MPa. Hasil pengujian menunjukkan bahwa peningkatan beban tekan menyebabkan penurunan daya optik keluaran dan peningkatan optical loss pada seluruh sampel, sehingga komposit PMMA/PDMS berpotensi digunakan sebagai elemen sensing tekanan berbasis perubahan rugi optik. Sensitivitas tertinggi diperoleh pada sampel tanpa penambahan ZrO₂ sebesar 0,0146 dB/MPa dengan linearitas terbaik R² = 0,9885, sedangkan sampel dengan penambahan 1,5 wt% ZrO₂ menghasilkan sensitivitas terbaik dari seluruh variasi penambahan ZrO2 yaitu sebesar 0,0141 dB/MPa dengan R² = 0,904. Kedua hasil sensitivitas terbaik ini lebih unggul jika dibandingkan dengan pengujian tekanan menggunakan POF Komersil berbahan 100% PMMA yaitu dengan sensitivitas 0,0096 dB/Mpa. Hasil ini menunjukkan bahwa komposit PMMA/PDMS dengan variasi penambahan ZrO₂ memiliki potensi sebagai elemen sensing pada sensor tekanan berbasis POF. Meskipun variasi 1,5 wt% ZrO₂ memberikan sensitivitas tertinggi di antara seluruh sampel yang didoping, penambahan ZrO₂ secara keseluruhan belum mampu meningkatkan performa sensor secara linear dibandingkan sampel tanpa doping.
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The development of plastic optical fiber-based pressure sensors offers an alternative monitoring technology due to their small size, lightweight structure, immunity to electromagnetic interference, and ability to respond to mechanical changes through optical intensity variation. However, the development of a sensing element material that is flexible, transparent, and optically stable remains a challenge, particularly for polymer composite-based pressure sensors. This study aims to design and evaluate the potential of ZrO₂-doped PMMA/PDMS composites as load-sensing elements based on polymer optical fiber. The composites were fabricated with ZrO₂ concentration variations of 0, 0.5, 1, and 1.5 wt%, and were characterized using FTIR, UV-Vis, and DMA to investigate their crystalline properties, functional groups, optical properties, and viscoelastic response. The sensor response test was carried out using a He-Ne laser light source, polymer optical fiber, optical power meter, sensor holder, and F1 class standard weights in the range of 1–5 kg, equivalent to 0,981-4,905 MPa. The test results showed that increasing the applied pressure led to a decrease in the optical output power and an increase in optical loss for all samples, indicating that the PMMA/PDMS composite has potential as a pressure-sensing element based on optical loss modulation. The highest sensitivity was achieved by the undoped sample, reaching 0.0146 dB/MPa with the highest linearity (R² = 0.9885). Among the ZrO₂-doped samples, the 1.5 wt% ZrO₂ composite exhibited the highest sensitivity of 0.0141 dB/MPa with an R² value of 0.904. Both sensitivity values were higher than that of a commercial POF made of 100% PMMA, which exhibited a sensitivity of 0.0096 dB/MPa. These results indicate that PMMA/PDMS composites with different ZrO₂ loadings have strong potential as sensing elements for POF-based pressure sensors. Although the 1.5 wt% ZrO₂ sample showed the highest sensitivity among all doped samples, the addition of ZrO₂ did not result in a consistent or linear improvement in sensor performance compared with the undoped sample.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Industri, inovasi, dan infrastruktur; Kesehatan dan kesejahteraan; Komposit PMMA/PDMS-Zirconia; Polymer optical fiber; Sensor tekanan
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA1800 Fiber Optics T Technology > TA Engineering (General). Civil engineering (General) > TA418.42 Hardness properties and tests. Hardness--Testing. T Technology > TA Engineering (General). Civil engineering (General) > TA418.9 Composite materials. Laminated materials. T Technology > TA Engineering (General). Civil engineering (General) > TA433 Strength of materials. T Technology > TJ Mechanical engineering and machinery
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Physics Engineering > 30201-(S1) Undergraduate Thesis
Depositing User:	Hesti Puspita Putri
Date Deposited:	04 Aug 2026 01:55
Last Modified:	04 Aug 2026 01:55
URI:	http://repository.its.ac.id/id/eprint/142663

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