Location

Williamsburg, VA

Start Date

1-1-1986 12:00 AM

Description

Electromagnetic ultrasonic transducers (EMUS) are a broad class of ultrasonic transducers that open new possibilities in the field of nondestructive testing. The reasons are: they don!t need liquid couplants; they can be designed to operate at elevated temperatures and to scan at high speed. They can provide a large variety of bulk and guided wave modes including shear waves with horizontal polarization, and their operating characteristics are easily reproducible. All these and other advantages are faced with a general disadvantage of a larger insertion loss than conventional transducers. However proper sensor and electronic design permits sufficient signal-to-noise levels to be achieved. When properly designed and instrumented an EMUS-based ultrasonic system can be used for many practical applications.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

5A

Chapter

Chapter 3: Sensors and Signal Processing

Section

Sensors

Pages

615-623

DOI

10.1007/978-1-4615-7763-8_63

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Recent Results in Nondestructive Testing with Electromagnetic Ultrasonic Transducers

Williamsburg, VA

Electromagnetic ultrasonic transducers (EMUS) are a broad class of ultrasonic transducers that open new possibilities in the field of nondestructive testing. The reasons are: they don!t need liquid couplants; they can be designed to operate at elevated temperatures and to scan at high speed. They can provide a large variety of bulk and guided wave modes including shear waves with horizontal polarization, and their operating characteristics are easily reproducible. All these and other advantages are faced with a general disadvantage of a larger insertion loss than conventional transducers. However proper sensor and electronic design permits sufficient signal-to-noise levels to be achieved. When properly designed and instrumented an EMUS-based ultrasonic system can be used for many practical applications.