STUDI KOMPUTASIONAL MEKANIKA MATERIAL KOMPOSIT VARIASI FRAKSI VOLUME PADA TURBIN ANGIN HELIKS SAVONIUS AIRFOIL SHAPE BLADE

Juliansyah, juli (2025) STUDI KOMPUTASIONAL MEKANIKA MATERIAL KOMPOSIT VARIASI FRAKSI VOLUME PADA TURBIN ANGIN HELIKS SAVONIUS AIRFOIL SHAPE BLADE. Bachelor thesis, Insititut Teknologi Kalimantan.

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Abstract

Penelitian ini menganalisis pengaruh fraksi volume pendek daun nanas terhadap tegangan Von mises dan Yeild Strength pada komposit resin polyester tak jenuh untuk bilah turbin angin vertikal tipe Savonius. Simulasi elemen hingga dilakukan pada dua skenario, bilah tunggal dan rangkaian turbin penuh, dengan variasi fraksi volume K30, K40, K50 serta resin polyester tak jenuh sebagai pembanding. Penambahan fraksi volume serat daun nanas terbukti memberikan pengaruh signifikan terhadap peningkatan performa mekanik material, terutama pada komposit dengan fraksi K50 yang menunjukkan kinerja paling optimal dalam menahan beban. Simulasi CFD dan statik struktural yang dilakukan dalam penelitian ini mendukung bahwa peningkatan fraksi serat tidak hanya memperkuat kekakuan material, tetapi juga mendistribusikan tegangan secara lebih merata dan mengurangi risiko deformasi berlebih. Selain itu, nilai deformasi tertinggi tercatat pada resin murni, sedangkan nilai deformasi terendah terdapat pada komposit dengan fraksi K50, menandakan kestabilan struktural yang lebih baik. Hasil menunjukkan bahwa tegangan Von mises pada bilah tunggal berkisar antara 8,98E-03 sampai 8,89E-03 MPa, sedangkan pada rangkaian mencapai hingga 8,303E-01 MPa. Tegangan tertinggi terdistribusi di area tengah dan akar bilah akibat bentuk geometri dan pertemuan aliran angin. Yeild Strength meningkat seiring bertambahnya fraksi serat, dari 54,944 MPa (K30) hingga 62,407 MPa (K50). Seluruh nilai tegangan Von mises masih berada di bawah batas elastis. Komposit dengan fraksi K50 menunjukkan kinerja mekanik terbaik dalam menahan beban, sehingga dapat dijadikan material alternatif yang potensial untuk bilah turbin angin. Kata Kunci : Komposit serat pendek, resin polyester, Von mises, yield strength, bilah turbin angin Savonius

Item Type: Thesis (Bachelor)
Subjects: T Technology > TS Manufactures
Divisions: Jurusan Ilmu Kebumian dan Lingkungan > Teknik Material dan Metalurgi
Depositing User: Juliansyah Juliansyah
Date Deposited: 11 Jul 2025 03:39
Last Modified: 11 Jul 2025 03:39
URI: http://repository.itk.ac.id/id/eprint/23692

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