Damage detection of highly damped structures using direct frequency response measurements and residual force vectors

Kevin L. Napolitano; John B. Kosmatka

doi:10.1117/12.239080

1 May 1996 Damage detection of highly damped structures using direct frequency response measurements and residual force vectors

Kevin L. Napolitano, John B. Kosmatka

Author Affiliations +

Proceedings Volume 2720, Smart Structures and Materials 1996: Passive Damping and Isolation; (1996) https://doi.org/10.1117/12.239080
Event: 1996 Symposium on Smart Structures and Materials, 1996, San Diego, CA, United States

Abstract

A methodology is presented for detecting damage of highly damped structural systems. Direct frequency response functions along with a correlated analytical model of the undamaged structure are used to detect and assess damage using residual force vectors. A sensitivity analysis using a least-squares approximation is used to assess the extent of damage in the face of changes in the system mass distribution, damping mechanism, and structure stiffness. Both VEM and fluid strut (one-dimensional) dampers are applied to an analytical model of a space truss. Numerical results are presented to validate and assess the proposed approach. The advantages and limitations of this method are examined. This methodology can also be used to perform system identification.

Citation Download Citation

Kevin L. Napolitano and John B. Kosmatka "Damage detection of highly damped structures using direct frequency response measurements and residual force vectors", Proc. SPIE 2720, Smart Structures and Materials 1996: Passive Damping and Isolation, (1 May 1996); https://doi.org/10.1117/12.239080

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