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Investigation of Modal Properties of AlSi7 Foam Produced by Powder Metallurgy Technique      
Yazarlar
Prof. Dr. Arif UZUN Prof. Dr. Arif UZUN
Kastamonu Üniversitesi, Türkiye
Uğur Gökmen
Gazi Üniversitesi, Türkiye
Henifi Çinici
Gazi Üniversitesi, Türkiye
Hasan Körük
Mef Üniversitesi, Türkiye
Mehmet Türker
Gazi Üniversitesi, Türkiye
Nermin Hande Avcıoğlu
Türkiye
Özet
The modal properties of aluminum-based (AlSi7) metallic foam, produced by powder metallurgy technique, as a function of foam density (and thus pore size and amount of porosity) were investigated. In the experimental studies, 1 wt.-% TiH2 and 7 wt.-% Si powders were added to aluminum powder and they were mixed in a three dimensional turbola mixer for 30 minutes. Mixed powders were compacted, extruded and rolled to produce the precursor samples. AlSi7 foam samples with the dimensions of 18.7 cm × 2.6 cm × 1.6 cm were produced after foaming at 690 °C. After all, the natural frequencies and the modal loss factors of a few foam samples with different pore distributions and/or densities were determined using the frequency response functions measured on the test samples. The results show that the densities of the foam samples decrease with increasing pore size and amount of porosity, and the modal loss factors of foam samples increase as foam density decreases. © Carl Hanser Verlag.
Anahtar Kelimeler
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı MATERIALS TESTING
Dergi ISSN 0025-5300
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce
Basım Tarihi 01-2013
Cilt No 55
Sayı 7
Sayfalar 598 / 601
Doi Numarası 10.3139/120.110475
Makale Linki http://www.hanser-elibrary.com/doi/abs/10.3139/120.110475