SPMS 2023

Session

Defectoscopy

29 Jun 2023, 11:15

Sloup v Čechách

17. New observations on fatigue crack growth using acoustic emission

Mr Milan Chlada

29/06/2023, 11:15

With the development of hardware capabilities in the field of acoustic emission signal measurement, the directional radiation of elastic waves from a fatigue crack-type source has been observed. The configuration of the sensors on a model pipe-type body is based on a detailed numerical analysis. It allows the confirmation of the effect of random directionality of the emission source, which has...

13. Feature selection and classification of acoustic emission signals

Jan Zavadil

29/06/2023, 11:35

This contribution deals with the recognition of acoustic emission signals for use in non-destructive defectoscopy or in machining process control. Classification can either be performed by representing signals by a convenient, lower-dimensional set of attributes or more directly, by passing them in their entirety to the classification algorithm. We focused on selecting methods and tools for...

5. Localization of continuous acoustic emission sources using cross-correlation and time reversal signal processing

Zuzana Dvořáková

29/06/2023, 11:55

Localization of continuous acoustic emission (generated, e.g. by leakage) is a very important problem in the field of non-destructive testing, but especially due to wave dispersion, velocity, and/or geometry changes the localization is still a challenge. An effective tool to overcome these problems is time reversal (TR) signal processing, which works very well in the case of burst acoustic...