MY180105A - Weld analysis using laser generated narrowband lamb waves - Google Patents

Weld analysis using laser generated narrowband lamb waves

Info

Publication number
MY180105A
MY180105A MYPI2014000182A MYPI2014000182A MY180105A MY 180105 A MY180105 A MY 180105A MY PI2014000182 A MYPI2014000182 A MY PI2014000182A MY PI2014000182 A MYPI2014000182 A MY PI2014000182A MY 180105 A MY180105 A MY 180105A
Authority
MY
Malaysia
Prior art keywords
laser generated
ultrasounds
reflection coefficients
lamb waves
weld analysis
Prior art date
Application number
MYPI2014000182A
Inventor
Ifeanyi Charles Ume
Tsun-Yen Wu
Original Assignee
Georgia Tech Res Inst
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 Georgia Tech Res Inst filed Critical Georgia Tech Res Inst
Priority to MYPI2014000182A priority Critical patent/MY180105A/en
Priority claimed from PCT/US2011/049787 external-priority patent/WO2013032450A2/en
Publication of MY180105A publication Critical patent/MY180105A/en

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  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)

Abstract

A system and method for measuring various weld characteristics is presented. The system and method can comprise a means to measure penetration depth of butt welds in thin plates, for example, using laser generated ultrasounds. Superimposed line sources (SLS) can be used to generate narrowband ultrasounds. A signal processing procedure that combines wavenumber-frequency (k-Ctl) domain filtering and synthetic phase tuning (SPT) is used to reduce the complexity of Lamb wave signals. The reflection coefficients for different wavelengths corresponding to each wave mode can be calculated. Regression analysis that can include stepwise regression and corrected Akaike's information criterion (AIC) can be performed to build prediction models that use the reflection coefficients as predictors. Fig. 2a
MYPI2014000182A 2011-08-30 2011-08-30 Weld analysis using laser generated narrowband lamb waves MY180105A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
MYPI2014000182A MY180105A (en) 2011-08-30 2011-08-30 Weld analysis using laser generated narrowband lamb waves

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
MYPI2014000182A MY180105A (en) 2011-08-30 2011-08-30 Weld analysis using laser generated narrowband lamb waves
PCT/US2011/049787 WO2013032450A2 (en) 2011-08-30 2011-08-30 Weld analysis using laser generated narrowband lamb waves

Publications (1)

Publication Number Publication Date
MY180105A true MY180105A (en) 2020-11-23

Family

ID=79186010

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI2014000182A MY180105A (en) 2011-08-30 2011-08-30 Weld analysis using laser generated narrowband lamb waves

Country Status (1)

Country Link
MY (1) MY180105A (en)

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