2012 Fiscal Year Final Research Report

Vibration Damping and Toughness Evaluations of CFRP Laminates with Smart Units Using Viscoelastic and Piezoelectric Films

Research Project

Project/Area Number	22656056
Research Category	Grant-in-Aid for Challenging Exploratory Research
Allocation Type	Single-year Grants
Research Field	Dynamics/Control
Research Institution	Chiba Institute of Technology
Principal Investigator	SUZUKI Kohji 千葉工業大学, 工学部, 教授 (70322427)
Project Period (FY)	2010 – 2012
Keywords	ダンピング / 耐損傷設計 / 粘弾性 / 圧電フィルム / 複合材料 / CFRP / FEM
Research Abstract	In this study, improvement mechanism of vibration damping and toughness of CFRP laminates with so-called smart units using visoelastic and piezoelectric films were investigated in detail by using FEM numerical analysis mainly with the aid of the modal strain energy approach. In addition, actual CFRP laminates with damping sheets inserted between the plies were prepared and then impact hammering and drop weight tests were carried out to the specimens, which certainly showed feasibility for experimentally evaluating a validity of the present laminated structural technology.

(6 results)