Metamaterial based acoustic lenses for structural health monitoring

Patent

Description

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.

Attributes

Attribute NameValues
Title
  • Metamaterial based acoustic lenses for structural health monitoring

Patent Number
  • US 9437183 B2

USPTO Link
Inventor
  • Fabio Semperlotti

  • Hongfei Zhu

Inventor From Local Institution
  • Fabio Semperlotti

  • Hongfei Zhu

Other Application
  • 14/577,556

Prior Publication Date
  • 2015-08-13

Prior Publication Number
  • US 20150228269 A1

Claims
  • 4

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)

International Patent Classification codes
  • G10K 11/30 (20060101); G01N 29/04 (20060101); G01N 29/22 (20060101); G10K 11/26 (20060101)

Language
  • English

Date Issued
  • 2016-09-06

Publisher
  • U.S. Patent and Trademark Office

Assignee
  • University of Notre Dame du Lac

Record Visibility and Access Public
Content License
  • All rights reserved

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