Development of pulse-echo ultrasonic imager capable of automatic scan area detection of any customizable shape (Conference Presentation)

Hasan Ahmed; Jung-Ryul Lee

doi:10.1117/12.2513851

29 March 2019 Development of pulse-echo ultrasonic imager capable of automatic scan area detection of any customizable shape (Conference Presentation)

Hasan Ahmed, Jung-Ryul Lee

Author Affiliations +

Proceedings Volume 10967, Active and Passive Smart Structures and Integrated Systems XIII; 1096729 (2019) https://doi.org/10.1117/12.2513851
Event: SPIE Smart Structures + Nondestructive Evaluation, 2019, Denver, Colorado, United States

Abstract

This paper proposes a pulse-echo ultrasonic propagation imaging (PE UPI) system for non-destructive evaluation of structures. The system can perform scans of any shape and can autonomously suggest the optimal scan area best suited for a given specimen. The system uses the bulk waves, which travel through the thickness of a specimen, for subsurface feature detection. This is achieved by joining the laser beams for the ultrasonic wave generation and sensing. Since bulk waves are less susceptible to dispersion during short travel time through the thickness, precise and clear damage assessment and defect localization is possible with minimum signal processing. The system uses a Q-switched laser for generating the ultrasonic waves, a laser Doppler vibrometer (LDV) for sensing, optical elements to combine the generating and sensing laser beams, a dual-axis automated translation stage for raster scanning and a digitizer to acquire the measurements. The system also employs a camera in its scan head to aid in customizable and automatic scan boundary delimitation. A graphical user interface (GUI) has been developed in C++ using QT framework. The software is used for autonomous scan area delimitation, signal acquisition, signal processing, result display and post-processing algorithms. The GUI is designed with a minimalist approach to promote usability and adaptability. Through the use of multi-threading, the software is able to show the results in parallel with an ongoing inspection. This is achieved by real-time and concurrent acquisition, processing, and display of ultrasonic signal of the latest scan point in a scan area.

Conference Presentation

Citation Download Citation

Hasan Ahmed and Jung-Ryul Lee "Development of pulse-echo ultrasonic imager capable of automatic scan area detection of any customizable shape (Conference Presentation)", Proc. SPIE 10967, Active and Passive Smart Structures and Integrated Systems XIII, 1096729 (29 March 2019); https://doi.org/10.1117/12.2513851

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
PRESENTATION

WATCH
PRESENTATION SAVE TO MY LIBRARY

GET CITATION

KEYWORDS

Ultrasonics

Imaging systems

Signal processing

Sensing systems

Wave sensors

Nondestructive evaluation

Optical scanning systems

Show All Keywords

Keywords/Phrases

Search In:

Publication Years