In-situ monitoring of acoustic linear and nonlinear behavior of titanium alloys during cycling loading

Jerome Frouin; Theodore E. Matikas; Jeong K. Na; Shamachary Sathish

doi:10.1117/12.339838

8 February 1999 In-situ monitoring of acoustic linear and nonlinear behavior of titanium alloys during cycling loading

Jerome Frouin, Theodore E. Matikas, Jeong K. Na, Shamachary Sathish

Proceedings Volume 3585, Nondestructive Evaluation of Aging Materials and Composites III; (1999) https://doi.org/10.1117/12.339838
Event: Nondestructive Evaluation Techniques for Aging Infrastructures and Manufacturing, 1999, Newport Beach, CA, United States

Abstract

An in-situ technique to measure sound velocity, ultrasonic attenuation and acoustic nonlinear property has been developed for characterization and early detection of fatigue damage in aerospace materials. A previous experiment using the f-2f technique on Ti-6Al-4V dog bone specimen fatigued at different stage of fatigue has shown that the material nonlinearity exhibit large change compared to the other ultrasonic parameter. Real-time monitoring of the nonlinearity may be a future tool to characterize early fatigue damage in the material. For this purpose we have developed a computer software and measurement technique including hardware for the automation of the measurement. New transducer holder and special grips are designed. The automation has allowed us to test the long-term stability of the electronics over a period of time and so proof of the linearity of the system. For the first time, a real-time experiment has been performed on a dog-bone specimen from zero fatigue al the way to the final fracture.

Citation Download Citation

Jerome Frouin, Theodore E. Matikas, Jeong K. Na, and Shamachary Sathish "In-situ monitoring of acoustic linear and nonlinear behavior of titanium alloys during cycling loading", Proc. SPIE 3585, Nondestructive Evaluation of Aging Materials and Composites III, (8 February 1999); https://doi.org/10.1117/12.339838

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