Efek Getaran dengan Frekuensi Alami pada Komposit Unsaturated Polyester-Fiberglass Metode Hand Layup terhadap Sifat Mekanik Bending
DOI:
https://doi.org/10.29122/jitm.v1i2.3829Keywords:
komposit UPFG, frekuensi alami, hand layupAbstract
Salah satu penyebab kegagalan suatu bahan adalah getaran. Getaran adalah gerakan bolak-balik relatif terhadap titik keseimbangan dalam selang waktu tertentu. Penelitian ini bertujuan untuk mengamati sifat mekanik bending material komposit UPFG setelah digetarkan pada frekuensi alaminya selama rentang waktu tertentu. Sifat mekanik bending dianalisis setelah diberikan perlakuan getaran selama 1, 2 dan 3 jam dibandingkan dengan tanpa perlakuan. Hasil penelitian menunjukkan kekakuan dan kekuatan bending sampel terus turun seiring lamanya perlakuan getaran yang diberikan. Setelah perlakuan 3 jam nilai kekakuannya turun sebesar 20,20 % menjadi 8106,52 MPa dibandingkan dengan tanpa perlakuan 10158 MPa dan nilai kekuatan bending turun 15,27 % menjadi 175,36 MPa dibandingkan tanpa perlakuan 206,96 MPa. Stabilitas susunan dan ikatan antara UP dan GF terpengaruh dengan getaran yang terus-menerus sehingga menurunkan nilai kekakuan dan kekuatannya.References
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