Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"AE event"”.
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Microprocessor-based system for the detection and characterization of acoustic emissions for materials testing
… Emission Detection and Characterization System (AEDCS). The AEDCS is capable of recording several Acoustic Emmision ( E) characteristics including AE event peak amplitude, duration, frequency, and time of occurrence. The analog and digital circuits designed to implement these functions are …
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Monitoring microseismic activity in core samples encased in core flooding apparatus subjected to confining and pore pressures
… to better understand the causes of microseismic events detected during and after CO2 injection, a sensitive, reliable and consistent data acquisition system was developed in the present study for monitoring microseismic (acoustic emission or AE) events emanating from rock samples tested in the …
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Rayleigh Wave Acoustic Emission during Crack Propagation in Steel
… amplitudes than bulk modes of acoustic emission (AE) was illustrated by an idealized thought experiment relating an SSP on a half-space to the response of crack faces to crack extension. A number of aspects of AE monitoring in finite objects were investigated. Attributes of surface wave …
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Structural and residual strength analysis of metal-to-metal adhesively bonded joints.
… behaviour of adhesive bonds. Acoustic emission (AE) was used to monitor the adhesive bond failure experimentally. AE-based pencil lead break (PLB) tests were used to detect the defects in adhesive joints manufactured with two different adhesive types (brittle, ductile) and different defect area …
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The generation mechanisms of acoustic emission in metal cutting
… vibrations, commonly called acoustic emissions (AE), detected during the course of metal cutting, since, although quite a lot of research effort has been put into the use of AE to monitor metal cutting condition, the mechanism by which AE is generated is still not fully understood. <br/><br/>If …
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Optimization of indentification of particle impacts using acoustic emission.
… with the structure. To apply Acoustic Emission (AE) in particle-impact monitoring, previous researchers focused primarily on dry particle impacts on dry target plate and/or wet particle impacts on wet or dry target plate. For dry particle impacts on dry target plate, AE events energy - calculated …
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Vliv parametrů vazebného média a struktury povrchu na kvalitu snímaného signálu akustické emise
… povrchu na vybrané parametry akustické emise (AE). Jsou zde srovnány amplitudy signálu naměřené při použití pěti různých vazebných médií při teplotách 20°C a 80°C. Pro sledování vlivu drsnosti povrchu na parametry AE byl zkonstruován jednoduchý přípravek k měření. Realizací základních …