Events Calendar

Seminarium ACMiN (online): Development of a dynamic transient framework for multiscale coupling of acoustic emission source and wave propagation in space and time
Thursday, 23. April 2020, 14:00 - 16:00

Uprzejmie zapraszamy na Seminarium ACMiN online, które odbędzie się w czwartek 23 kwietnia 2020 r. o godz. 14.00. W spotkaniu można uczestniczyć poprzez poniższy link:

https://aghcentrumelearningu.clickmeeting.com/development-of-a-dynamic-transient-framework-for-multiscale-coupling-of-acoustic-emission-source

Referat pt. "Development of a dynamic transient framework for multiscale coupling of acoustic emission source and wave propagation in space and time" wygłosi dr Siddhesh Raorane (ACMiN, Kraków).

Streszczenie:

Structural Health Monitoring (SHM) plays an important role in assessing the condition of in-service structures, thus making it essential for improving reliability and safety of these structures. A well-developed versatile non-destructive testing (NDT) technique for SHM is Acoustic Emission (AE) testing/monitoring, which involves analysing elastic waves generated by damage sources in a structure. Detection and analysis of these elastic waves can supply valuable information regarding the origin and importance of a discontinuity in a material. Despite the wide industrial application potential, the fundamental understanding and relations between the detected AE signal and the AE source are far more complicated than assumed before, and it is necessary to fully understand the effects that influence the AE signal. Properly designed numerical models can be used to broaden our knowledge on those effects and contribute to the development of new, robust and reliable inspection methods. In this project, a dynamic transient framework coupling acoustic emission source and wave propagation in space and time will be developed. Due to different space and time scales involved – related to damage evolution (e.g. crack propagation) and wave propagation between the source to the sensor (i.e. over a distance much longer that one considered for crack propagation) – a dynamic multiscale approach coupling length and time scales is necessary. Varying material properties, spatial discretization parameters and time steps in the coupled numerical models highly affect the stability and reflection/transmission properties, and thus it becomes important to study and analyse these phenomena as they determine the accuracy of the results to a great extent. In this seminar, the formulation, stability and reflection/transmission properties of a dynamic hybrid multiscale coupling scheme coupling two dynamic transient models for elastic wave propagation, namely, the Local Interaction Simulation Approach (LISA) and Cellular Automata for Elastodynamics (CAFE), will be discussed.

Location : seminarium online