Location

La Jolla ,CA

Start Date

1-1-1989 12:00 AM

Description

Inspection of advanced composite structures often requires the use of ultrasonic water squirter systems. These systems usually utilize through-transmission techniques to detect delaminations and other internal flaws. Through-transmission techniques are useful in detecting the presence of these flaws but cannot provide information as to the through-wall thickness location of the flaw. A pulse-echo squirter system can provide the capability to both detect and locate in the through-wall dimension the presence of delaminations. However, in the past, the turbulence usually generated in water squirter systems has made it impossible to do pulse-echo inspections. This was especially true for finding near-surface defects.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

8A

Chapter

Chapter 4: Probes and Sensors

Section

Ultrasonic Transducer Models and Measurements

Pages

929-936

DOI

10.1007/978-1-4613-0817-1_116

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Development of a Pulse-Echo Ultrasonic Squirter for Detection of First Layer Delamination in Composite Structures

La Jolla ,CA

Inspection of advanced composite structures often requires the use of ultrasonic water squirter systems. These systems usually utilize through-transmission techniques to detect delaminations and other internal flaws. Through-transmission techniques are useful in detecting the presence of these flaws but cannot provide information as to the through-wall thickness location of the flaw. A pulse-echo squirter system can provide the capability to both detect and locate in the through-wall dimension the presence of delaminations. However, in the past, the turbulence usually generated in water squirter systems has made it impossible to do pulse-echo inspections. This was especially true for finding near-surface defects.