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Acoustic Emission
Testing
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When a solid material is stressed,
imperfections within the material may emit short bursts of energy called
"emissions" or “events”. In much the same manner as ultrasonic testing,
special receivers (sensors) can detect these acoustic emissions. The source
of "emissions" can be evaluated through the study of their strength,
frequency, dispersion, and location.
TUBI TAK
contracts with specialty inspection companies to perform this unique test, several conventional and
modal AE systems, with the most advanced hardware and software are available,. We can handle a
variety of specialized AE examinations field settings.
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AET Applications
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Laboratory & R&D studies
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In field inspection
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Structural integrity
evaluation
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Vessels testing [ambient,
hot or cryogenic, metallic and FRP, spheres]
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Tank bottom testing
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Nuclear components
inspection (valves, lift beams, steam lines)
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Corrosion detection
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Pipeline testing
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Transformers testing
(Partial Discharge)
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Railroad tank car testing
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Tube trailers & high
pressure gas cylinders
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Reactor & high energy
piping testing
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Aging aircraft evaluation
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Advanced materials testing
(composites, ceramics)
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Production quality control
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Rocket motor testing
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AET ADVANTAGES
Compared to conventional
inspection methods the advantages of the Acoustic Emission technique are:
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High sensitivity.
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Early and rapid detection of
defects, flaws, cracks etc.
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Real time monitoring
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Cost Reduction
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Defective area location: only
critical defects provide sustainable Acoustic Emission sources.
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Minimization of plant downtime
for inspection, no need for scanning the whole structural surface
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Minor disturbance of
insulation.
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AET Limitations
On the negative side, AET requires stimulus. AE technique can only
qualitatively estimate the damage and predict how long the components will
last. So, other NDT methods are still needed for thorough examinations and
for obtaining quantitative information. Plant environments are usually very
noisy and the AE signals are usually very weak. This situation calls for
incorporation of signal discrimination and noise reduction methods. In this
regard, signal
processing and frequency domain analysis are expected to improve the
situation
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More Information and Request :
special-ndt@tubi-tak.com |
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