Location

La Jolla, CA

Start Date

1-1-1983 12:00 AM

Description

Accompanying the requirements for higher quality welds in structural parts, there is a growing demand for more rapid and automatic methods for their nondestructive inspection. Conventional X-ray methods are inherently slow and are difficult to automate. Furthermore, they often present a safety hazard that adds mass and bureaucracy to the application of the method. Ultrasonics, on the other hand, can be very rapid, is easily made automatic, and does not present any safety problems. Its main drawbacks are the requirement for a carefully aligned transducer, a plumbing system to supply liquid couplant, and an educated operator to maintain the alignment and coupling throughout the scan of the weld line. Since electromagnetic acoustic transducers (EMATs)1 eliminate the need for a couplant fluid, they would appear to offer a major improvement for weld inspection technology.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

2A

Chapter

Section 5: Weldments

Pages

271-281

DOI

10.1007/978-1-4613-3706-5_16

Language

en

File Format

application/pdf

Included in

Manufacturing Commons

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Jan 1st, 12:00 AM

High Frequency, Angle Beam EMATs for Weld Inspection

La Jolla, CA

Accompanying the requirements for higher quality welds in structural parts, there is a growing demand for more rapid and automatic methods for their nondestructive inspection. Conventional X-ray methods are inherently slow and are difficult to automate. Furthermore, they often present a safety hazard that adds mass and bureaucracy to the application of the method. Ultrasonics, on the other hand, can be very rapid, is easily made automatic, and does not present any safety problems. Its main drawbacks are the requirement for a carefully aligned transducer, a plumbing system to supply liquid couplant, and an educated operator to maintain the alignment and coupling throughout the scan of the weld line. Since electromagnetic acoustic transducers (EMATs)1 eliminate the need for a couplant fluid, they would appear to offer a major improvement for weld inspection technology.