Damping behavior of Al/SiC functionally graded and metal matrix composites

Acar E., Aydin M.

JOURNAL OF ASIAN CERAMIC SOCIETIES, cilt.9, sa.2, ss.578-585, 2021 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 9 Sayı: 2
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1080/21870764.2021.1904606
  • Dergi Adı: JOURNAL OF ASIAN CERAMIC SOCIETIES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.578-585
  • Anahtar Kelimeler: FGMs, metal-matrix composites, internal friction, DMA, damping capacity, storage modulus
  • Erciyes Üniversitesi Adresli: Evet

Özet

Al/SiC functionally graded and metal-matrix composites were investigated through dynamic mechanical analyzer as a function of vibrating frequencies. It was found that internal frictions were strongly dependent on material type and vibrating frequency. Tan delta reached 30.4 x 10(-3) and 21.2 x 10(-3)in FGM and MMC, respectively, at vibrating frequency of 1 Hz. The damping capacity decreased as the frequency increased to 10 Hz and 30 Hz. Storage moduli were 172 GPa and 144 GPa for FGMs and MMCs, respectively, at 1 Hz. Similar to Tan delta, storage moduli of the both materials were more sensitive to frequency change at higher temperatures. In general, higher storage moduli and damping capacities were observed in FGMs compared to MMCs.