NURSA'BAN, ACEP (2020) KARAKTERISTIK DINAMIK PADA SCREW COMPRESSOR AKIBAT PENGARUH REDAMAN DENGAN METODE BUMP TEST. S1 thesis, Universitas Mercu Buana.
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Abstract
Compressors often cause vibrations in the surrounding environment, therefore there is a need for attenuation to minimize vibrations during operation. Therefore the compressor needs to be checked to maximize its performance, in addition it is needed for preventive maintenance. Therefore, in this study the authors conducted a screw compressor inspection through latevibration measurement technic using the Bump Test method. In the test carried out the accelerometer sensor is placed at points A, B and C. Point A (placed to the right of the screw, precisely on the pulley), point B (in the middle area of the screw), and point C (part of the rotor screw bearing, on the left). Each point is measured against three axes namely the x, y and z axes. This study shows that screw damage that occurs in the field is at point B, the frequency appears after 200 Hz on the x, y and z axes. Meanwhile, in the points B and C, at all measurement points, no changes occur at any frequency. Keywords: Screw compressor, Pulley compressor, Bearing compressor, Bump Test. Kompressor sering menimbulkan getaran pada lingkungan sekitar, oleh sebab itu perlu adanya redaman untuk meminimalkan getaran saat pengoperasiannya. Oleh sebab itu kompressor perlu dilakukan pengecekan untuk memaksimalkan kinerjanya, selain itu diperlukan guna preventive maintenance. Oleh karena itu, pada penelitian ini penulis melakukan teknik pemeriksaan screw kompressor melalui pengukuran getaran menggunakan metoda Bump Test. Pada pengujian yang dilakukan sensor accelerometer di letakan pada titik A, B dan C. Titik A (diletakan di sebelah kanan screw tepatnya pada bagian pulley), titik B (di area tengah screw), dan titik C (bagian bearing rotor screw sebelah kiri). Setiap titik diukur terhadap tiga sumbu yaitu sumbu x, y dan z. Studi ini menunjukkan bahwa kerusakan screw yang terjadi di lapangan berada di titik B frekuensi pribadi muncul setelah 200 Hz pada sumbu x, y dan z. Sementara itu, di bidang B dan C, di semua titik pengukuran, tidak ada perubahan yang terjadi pada frekuensi apa pun. Kata Kunci: Screw kompressor, Pulley kompressor, Bearing kompressor, Bump Test.
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