WO2002062206A3 - In-situ structural health monitoring, diagnostics and prognostics system utilizing thin piezoelectric sensors - Google Patents

In-situ structural health monitoring, diagnostics and prognostics system utilizing thin piezoelectric sensors Download PDF

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Publication number
WO2002062206A3
WO2002062206A3 PCT/US2002/003653 US0203653W WO02062206A3 WO 2002062206 A3 WO2002062206 A3 WO 2002062206A3 US 0203653 W US0203653 W US 0203653W WO 02062206 A3 WO02062206 A3 WO 02062206A3
Authority
WO
WIPO (PCT)
Prior art keywords
diagnostics
thin piezoelectric
health monitoring
system utilizing
piezoelectric sensors
Prior art date
Application number
PCT/US2002/003653
Other languages
French (fr)
Other versions
WO2002062206A9 (en
WO2002062206A2 (en
Inventor
Victor Giurgiutiu
Original Assignee
Univ South Carolina
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Univ South Carolina filed Critical Univ South Carolina
Priority to AU2002255518A priority Critical patent/AU2002255518A1/en
Publication of WO2002062206A2 publication Critical patent/WO2002062206A2/en
Publication of WO2002062206A3 publication Critical patent/WO2002062206A3/en
Publication of WO2002062206A9 publication Critical patent/WO2002062206A9/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/04—Analysing solids
    • G01N29/11—Analysing solids by measuring attenuation of acoustic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/24—Probes
    • G01N29/2437—Piezoelectric probes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/24—Probes
    • G01N29/2475—Embedded probes, i.e. probes incorporated in objects to be inspected
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/24—Probes
    • G01N29/2493—Wheel shaped probes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
    • G01N29/46—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by spectral analysis, e.g. Fourier analysis or wavelet analysis
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0058—Kind of property studied
    • G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
    • G01N2203/0073—Fatigue
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/06—Indicating or recording means; Sensing means
    • G01N2203/0617—Electrical or magnetic indicating, recording or sensing means
    • G01N2203/0623—Electrical or magnetic indicating, recording or sensing means using piezoelectric gauges
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/023—Solids
    • G01N2291/0231—Composite or layered materials
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/025—Change of phase or condition
    • G01N2291/0258—Structural degradation, e.g. fatigue of composites, ageing of oils
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/04—Wave modes and trajectories
    • G01N2291/042—Wave modes
    • G01N2291/0427—Flexural waves, plate waves, e.g. Lamb waves, tuning fork, cantilever
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/10—Number of transducers
    • G01N2291/106—Number of transducers one or more transducer arrays
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/26—Scanned objects
    • G01N2291/269—Various geometry objects
    • G01N2291/2694—Wings or other aircraft parts

Abstract

A method of detecting a damaged feature within a structure (32) includes embedding a plurality of thin piezoelectric ceramic sensors (26) on the structure (32). A first sensor (34) is excited so that the first sensor (26) produces a responsive signal in the structure (32). The responsive signal is received at a second sensor. The presence or absence in the received responsive signal of at least one predetermined signal characteristic is determined, where the predetermined signal characteristic is related to existence of the damage feature.
PCT/US2002/003653 2001-02-08 2002-02-08 In-situ structural health monitoring, diagnostics and prognostics system utilizing thin piezoelectric sensors WO2002062206A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002255518A AU2002255518A1 (en) 2001-02-08 2002-02-08 In-situ structural health monitoring, diagnostics and prognostics system utilizing thin piezoelectric sensors

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US26765001P 2001-02-08 2001-02-08
US60/267,650 2001-02-08

Publications (3)

Publication Number Publication Date
WO2002062206A2 WO2002062206A2 (en) 2002-08-15
WO2002062206A3 true WO2002062206A3 (en) 2003-03-06
WO2002062206A9 WO2002062206A9 (en) 2003-11-13

Family

ID=23019645

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/003653 WO2002062206A2 (en) 2001-02-08 2002-02-08 In-situ structural health monitoring, diagnostics and prognostics system utilizing thin piezoelectric sensors

Country Status (3)

Country Link
US (1) US7024315B2 (en)
AU (1) AU2002255518A1 (en)
WO (1) WO2002062206A2 (en)

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Also Published As

Publication number Publication date
US20030009300A1 (en) 2003-01-09
WO2002062206A9 (en) 2003-11-13
WO2002062206A2 (en) 2002-08-15
AU2002255518A1 (en) 2002-08-19
US7024315B2 (en) 2006-04-04

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