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Metamaterial based acoustic lenses for structural health monitoring

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posted on 2017-08-01, 00:00 authored by Fabio Semperlotti, Hongfei Zhu
An embedded acoustic metamaterial lenses allows for ultrasonic beam-forming and high resolution identification of acoustic sources for structural health monitoring. The lenses design provides an alternative to conventional phased-array technology enabling the formation of steerable and collimated (or focused) ultrasonic beams by exploiting a single transducer. The ultrasonic beam can be steered by simply tuning the frequency of the excitation. Also, the embedded lens can be designed to achieve sub-wavelength resolution to clustered acoustic sources which is a typical scenario encountered in incipient structural damage.

History

Patent Number

US 9437183 B2

Other Application

14/577,556

Inventor

Fabio Semperlotti Hongfei Zhu

Inventor from Local Institution

Fabio Semperlotti Hongfei Zhu

Assignee

University of Notre Dame du Lac

Date Modified

2017-08-01

Language

  • English

Claims

4

Prior Publication Number

US 20150228269 A1

Publisher

U.S. Patent and Trademark Office

Cooperative Patent Classification Codes

G10K 11/30 (20130101); G01N 29/221 (20130101); G01N 29/04 (20130101); G01N 2291/0231 (20130101); G01N 2291/02491 (20130101); G01N 2291/0258 (20130101); G01N 2291/042 (20130101); G01N 2291/106 (20130101); G10K 11/343 (20130101)

Contributor

Fabio Semperlotti|Hongfei Zhu

International Patent Classification Codes

G10K 11/30 (20060101); G01N 29/04 (20060101); G01N 29/22 (20060101); G10K 11/26 (20060101)

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