Applied Inspection Systems, Inc.

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Benton, AR 

(501) 776-8454

Acoustic Emission (AE) is a nondestructive testing technique used in monitoring structures or components for flaws. This is done by the mechanically loading the test piece which forces the flaw to release energy. The energy released is stress waves and can be detected by AE sensors mounted on the structure. AE has been used in the refining industry, chemical industry, power generation, manufacturing, pipelines and paper mills. AIS uses new high-speed AE systems from Vallen Systeme.

Benefits
Structures and Componets
Loading Methods
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Benefits

1. AE is a global monitoring technique. That is an entire structure can be monitored from a few locations.
2. Most of the time the equipment can be monitored while in service with little interruption to the normal process.
3. There is typically less time and less cost than other NDE methods due to testing a structure during only one test. There is only the need to remove insulation in small areas instead of completely removing it.
4. Detects only active defects. Dormant or inactive defects are not detected.
5. If areas are detected in the AE testing, only those areas need to be followed up by other traditional NDE methods

Structures

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Loading Methods 

Pneumatic Pressurization
Hydrostatic Pressurization
Thermal Excursion (Cooldown)
Qualification Testing
Continuous On-line
Leak Testing
Remote Continuous On-line

Check here for a system for grading the results of an AE test.

See a short list of some procedures.

Some AE terms and definitions.

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Last updated 08 September, 2006

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