Acoustic Emission Testing on Large Structures
نویسندگان
چکیده
منابع مشابه
Acoustic emission localization methods for large structures based on beamforming and array techniques
The inspection of bridges is currently made by visual inspection or by wired sensor techniques, which are relatively expensive, vulnerable to damage, and time consuming to install. In contrast, wireless sensor networks are easy to deploy and flexible in application so that the network can adjust to the individual structure. Different sensing techniques can be used with such a network, but acous...
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Pad cratering test methods have been under development with the emergence of this laminate fracture defect mechanism. In additional to ball shear, ball pull, and pin pull testing methods, the acoustic emission method is being developed to evaluate laminate materials’ resistance to pad cratering. Though the acoustic emission (AE) method has been proven to be able to detect pad cratering, no stud...
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adapts beamforming tools developed for passive sonar and seismological applications for use in AE source localization and signal discrimination analyses. Instead of relying on the relatively weak P-wave, this method uses the energy-rich Rayleigh wave and requires only a small array of 4–8 sensors. Tests on an in-service reinforced concrete structure demonstrate that the azimuth of an artificial...
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Concrete and steel are the most widely used major materials for constructing civil structures such as bridges, dam, and buildings. From the acoustic emission (AE) point of view, contrary to steel itself, a lot of AE signals are acquired in concrete itself under service loads whether the crack is active or not. This paper aims to identify the differences of AE event patterns caused by developing...
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ژورنال
عنوان ژورنال: Measurement and Control
سال: 2004
ISSN: 0020-2940
DOI: 10.1177/002029400403700601