Depth assessment of defects in composite plates combining shearography and vibration excitation

Juliana Schöntag; Daniel Willemann; Armando Albertazzi Gonçalves Jr.

doi:10.1117/12.871200

13 September 2010 Depth assessment of defects in composite plates combining shearography and vibration excitation

Juliana Schöntag, Daniel Willemann, Armando Albertazzi Gonçalves Jr.

Proceedings Volume 7387, Speckle 2010: Optical Metrology; 73871Z (2010) https://doi.org/10.1117/12.871200
Event: Speckle 2010, 2010, Florianapolis, Brazil

Abstract

This paper presents an investigation on the applicability of shearography to characterize the location and depth of defects in composite materials. Sets of specimens with artificial square flaws between the layers of a composite material have been used for the experiments. Flaws with different sizes were placed at different depths along the thickness of the material. Time-Average and Stroboscopic laser illumination have been applied together with vibrational loading. The resonance frequencies were related to the depths of the different faults sizes. Frequency x depth results showed good behavior for different defect sizes. These results encourages to further studies with other types of faults and composite materials.

Citation Download Citation

Juliana Schöntag, Daniel Willemann, and Armando Albertazzi Gonçalves Jr. "Depth assessment of defects in composite plates combining shearography and vibration excitation", Proc. SPIE 7387, Speckle 2010: Optical Metrology, 73871Z (13 September 2010); https://doi.org/10.1117/12.871200

ACCESS THE FULL ARTICLE

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