Improving piezoelectric energy harvesting performance through mechanical stiffness matching
Mechanics of Advanced Materials and Structures, cilt.31, sa.28, ss.10721-10734, 2024 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 31 Sayı: 28
- Basım Tarihi: 2024
- Doi Numarası: 10.1080/15376494.2023.2295383
- Dergi Adı: Mechanics of Advanced Materials and Structures
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Communication Abstracts, Compendex, INSPEC, Metadex, DIALNET, Civil Engineering Abstracts
- Sayfa Sayıları: ss.10721-10734
- Anahtar Kelimeler: Energy harvesting, energy transfer, freeze casting, piezoelectric, stiffness matching
- Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
- Ankara Yıldırım Beyazıt Üniversitesi Adresli: Evet
Özet
The mechanical energy transfer between the source structure and active material in piezoelectric energy harvesters is investigated here. First, an analytical prediction to improve mechanical energy transfer into the piezoelectric material is proposed and validated by tailoring the stiffness of the beam to off-the-shelf piezocomposites through numerical models and experiments. An experimental study is then presented whereby the mechanical properties of freeze cast piezocomposites are controlled by adjusting the volume fraction of piezoceramic and epoxy filler phases. This offers a new approach for tailoring the mechanical properties of piezocomposites to maximize mechanical energy transfer into the material via stiffness matching.