Sensitization detection of aluminum alloy plates using laser-generated longitudinal waves

Songwei Wang; Abdraouf Abusoua; Haiying Huang

doi:10.1117/12.2661241

18 April 2023 Sensitization detection of aluminum alloy plates using laser-generated longitudinal waves

Songwei Wang, Abdraouf Abusoua, Haiying Huang

Proceedings Volume 12486, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2023; 124860C (2023) https://doi.org/10.1117/12.2661241
Event: SPIE Smart Structures + Nondestructive Evaluation, 2023, Long Beach, California, United States

Abstract

Sensitization refers to the formation of magnesium precipitates at the grain boundaries when Al-Mg alloy is exposed to elevated temperatures for extended periods of time, which can lead to reduced corrosion resistance and increased susceptibility to stress corrosion cracking. Since sensitization occurs at the microstructure level, a measurement technique that can measure multiple locations rapidly and is highly sensitive to minute changes is called for. This paper explores laser-generated longitudinal ultrasonic guided waves for sensitization detection in aluminum alloy plates. The samples were heat-treated to induce sensitization, and the degree of sensitization was determined by the nitric acid mass loss tests. The longitudinal ultrasonic guided waves were generated using a high-power pulsed free-space laser and detected using a continuous fiber laser. A digital signal processing algorithm has been developed to analyze the time-frequency components of the acquired signal. The experimental results demonstrated that the state of sensitization can be characterized by ultrasound parameters, such as attenuation.

Conference Presentation

Citation Download Citation

Songwei Wang, Abdraouf Abusoua, and Haiying Huang "Sensitization detection of aluminum alloy plates using laser-generated longitudinal waves", Proc. SPIE 12486, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2023, 124860C (18 April 2023); https://doi.org/10.1117/12.2661241

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