Damage detection and characterization by processing laser vibrometer measurement results: application to composite materials

Paolo Castellini; Gian Marco Revel

doi:10.1117/12.307732

1 June 1998 Damage detection and characterization by processing laser vibrometer measurement results: application to composite materials

Paolo Castellini, Gian Marco Revel

Author Affiliations +

Proceedings Volume 3411, Third International Conference on Vibration Measurements by Laser Techniques: Advances and Applications; (1998) https://doi.org/10.1117/12.307732
Event: Third International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, 1998, Ancona, Italy

Abstract

In recent years damage detection techniques based on vibration data have been largely investigated with promising results for many applications. In particular, several attempts have been done to determine which kind of data must be extracted for damage monitoring. In this work scanning laser doppler vibrometry (SLDV) has been sued to detect, localize and characterize delaminations in composite materials. In order to improve understanding of the analyzed phenomena and to design efficient post-processing algorithms for experimental SLDV data, a theoretical lumped model has been developed by the authors. The model describes the dynamic behavior of the structure in the delamination zone. Following the model result, an experimental investigation by SLDV has been performed on panels with known detachments. Results have been compared with those achieved by thermal tomography, which at present is one of the most used techniques for monitoring the state of composite materials. The presented methodology has proved to be efficient also to determine the delamination deepness.

Citation Download Citation

Paolo Castellini and Gian Marco Revel "Damage detection and characterization by processing laser vibrometer measurement results: application to composite materials", Proc. SPIE 3411, Third International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, (1 June 1998); https://doi.org/10.1117/12.307732

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