Location

Snowmass Village, CO

Start Date

1-1-1995 12:00 AM

Description

Ultrasonic Time Reversal Mirror (TRM) is an original solution to detect small cracks in a solid of any geometrical shape. Indeed, nondestructive testing need high resolution capabilities, high reliability and shortest control time. But the more recent techniques need an a priori knowledge of the liquid-solid interface and present limitations. The first of these uses several large prefocussed arrays, one array for each testing depth. Therefore this control system is sensitive to the arrays alignment, limited by the array precision focusing, and requires a complex mechanical follower system. A greater flexibility can be obtained by a second technique that is based on delay lines. But an accurate knowledge of the interface and a high calculs resolution are indispensable.

Volume

14B

Chapter

Chapter 7: Materials' Degradation and Specific Applications

Section

Hard Alpha in Titanium

Pages

2105-2112

DOI

10.1007/978-1-4615-1987-4_269

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Ultrasonic Inspection of Titanium Alloys with a Time Reversal Mirror

Snowmass Village, CO

Ultrasonic Time Reversal Mirror (TRM) is an original solution to detect small cracks in a solid of any geometrical shape. Indeed, nondestructive testing need high resolution capabilities, high reliability and shortest control time. But the more recent techniques need an a priori knowledge of the liquid-solid interface and present limitations. The first of these uses several large prefocussed arrays, one array for each testing depth. Therefore this control system is sensitive to the arrays alignment, limited by the array precision focusing, and requires a complex mechanical follower system. A greater flexibility can be obtained by a second technique that is based on delay lines. But an accurate knowledge of the interface and a high calculs resolution are indispensable.