CD Skripsi

PENGARUH PENAMBAHAN TEMBAGA 1-9% PADA ALUMINIUM PADUAN TERHADAP KEKERASAN, STRUKTUR MIKRO DAN FREKUENSI ALAMI MATERIAL PEMBUAT LONCENG

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Research on Al-Cu generally studies the connection with mechanical properties
while studies on acoustic properties are still limited. This study purposes to
determine the percentage of Cu addition in aluminum to achieve optimal acoustic
properties and to study the percentage of Cu addition to hardness; microstructure;
and the natural frequency of the material. The percentage of Cu varies from 1% to
9%, with the casting process using the investment casting method at a pouring
temperature of 700°C and the molding material is ceramic sika flour. The design
of the specimen to be formed has a size of 115x10x4 mm. The casting products are
milled to obtain specimens that match the design. Natural frequencies were
obtained using the bump test method, microstructure photos using metallographic
testing, and hardness using the Vickers method. The results showed an optimal
percentage addition at 5% with a frequency of 1250 Hz. The addition of Cu in the
range of 1-5% resulted in an increase in natural frequency up to 1250 Hz, material
hardness up to 55,315 kg/mm2, and Al2Cu phase area up to 8.766%. However, the
addition of Cu of more than 5% results in a decrease in natural frequency up to 780
Hz, material hardness up to 41,502 kg/mm2, and an area of the Al2Cu phase area
up to 5,351%. This research is suitable in the field of metal foundry industry,
especially in improving the acoustic properties of aluminum. The addition of 5%
Cu to aluminum has been shown to produce a material with optimal acoustic
properties.
Keywords: Al-Cu, acoustic properties, natural frequency, microstructure,
hardness.

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

1907113065

Penerbit

Pekanbaru : Universitas Riau - F. Teknik - Teknik Mesin., 2024

Deskripsi Fisik

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Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

1907113065

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

TEKNIK MESIN

Info Detail Spesifik

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Pernyataan Tanggungjawab

GUNTUR

Versi lain/terkait

Lampiran Berkas

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