CONFERENCE PROCEEDINGS
Advanced Search
Home > Proceedings > Volume 10170 > Article
Presentation
11 May 2017 Gradient-index based smart metacomposite for elastic wave focusing (Conference Presentation)
Kaijun Yi, Manuel Collet
Author Affiliations +
Proceedings Volume 10170, Health Monitoring of Structural and Biological Systems 2017; 101701M (2017) https://doi.org/10.1117/12.2263342
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2017, Portland, Oregon, United States
Abstract
We designed and analyzed a piezo-lens to focus flexural waves in thin plates. The piezo-lens comprises a host plate and piezoelectric patches bonded on the surfaces of the plate. The piezoelectric patches are shunted with negative capacitance circuits. The effective refractive indexes inside the piezo-lens are designed to fit a hyperbolic secant distribution by tuning the negative capacitance values. A homogenized model of piezo-mechanical system is adopted in the designing process of the piezo-lens. The wave focusing effect is studied by the finite element method. Numerical results show that the piezo-lens can focus flexural waves by bending their trajectories, and is effective in a large frequency band. The piezo-lens has the ability to focus flexural waves at different locations by tuning the shunting negative capacitance values. Potential applications of the piezo-lens include energy harvesting, SHM, etc.
Conference Presentation
© (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
Kaijun Yi and Manuel Collet "Gradient-index based smart metacomposite for elastic wave focusing (Conference Presentation)", Proc. SPIE 10170, Health Monitoring of Structural and Biological Systems 2017, 101701M (11 May 2017); https://doi.org/10.1117/12.2263342
ACCESS THE FULL ARTICLE
ORGANIZATIONAL
Sign in with credentials provided by your organization.
INSTITUTIONAL
Select your institution to access the SPIE Digital Library.
SELECT YOUR INSTITUTION
PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.
PERSONAL SIGN IN
No SPIE Account? Create one
PURCHASE THIS CONTENT
SUBSCRIBE TO DIGITAL LIBRARY
50 downloads per 1-year subscription
Members: $195
Non-members: $335 ADD TO CART
25 downloads per 1 - year subscription
Members: $145
Non-members: $250 ADD TO CART
PURCHASE SINGLE ARTICLE
Includes PDF, HTML & Video, when available
Members: $17.00
Non-members: $21.00 ADD TO CART
PROCEEDINGS
 PRESENTATION
WATCH
PRESENTATION SAVE TO MY LIBRARY
GET CITATION
Advertisement
Advertisement
KEYWORDS
Capacitance
Wave plates
Energy harvesting
Finite element methods
Refractive index
Structural health monitoring
Systems modeling
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top