Localization Of Acoustic Emission In Reinforced Concrete Using A Heterogeneous Velocity Model And Multilinear Wave Propagation Paths
| Autor: | Gollob Stephan, Vogel Thomas |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
REINFORCED CONCRETE
UNSTRESSED (BUILDING MATERIALS) STAHLBETONKONSTRUKTIONEN + STAHLBETONBAUTEN (BAUKONSTRUKTIONSTEILE) CRACKS (BUILDING MATERIALS) REINFORCED CONCRETE STRUCTURES (STRUCTURAL ELEMENTS) MODELLRECHNUNG UND SIMULATION IN DER WERKSTOFFKUNDE MATHEMATICAL MODELING AND SIMULATION IN MATERIALS SCIENCES SOUND-PROPAGATION SPEED (ACOUSTICS) RISSE (BAUSTOFFE) SCHALLAUSBREITUNGSGESCHWINDIGKEIT (AKUSTIK) STAHLBETON SCHLAFF BEWEHRT (BAUSTOFFE) ddc:690 Buildings |
| Popis: | Acoustic emission analysis is a well established non destructive testing and monitoring method for homogeneous materials and structures. Therefore the algorithms used to locate the source of an acoustic emission rely on homogeneous velocity models and straight wave propagation paths. Acoustic emission analysis has also become a promising method to monitor the change of conditions of concrete and reinforced concrete structures. Concrete and especially reinforced concrete however is a heterogeneous material. The velocity models used for determining the source location have to consider the heterogeneity of the structure. Reinforcements and cracks have a major influence on the wave propagation velocity and the wave propagation path. The most common localization methods e.g. the Geiger Location Theorem rely on straight wave propagation paths (Maochen 2003). For the case of cracked reinforced concrete however the assumption of a straight wave propagation path is far from reality. A new non iterative localization method is proposed taking a heterogeneous velocity model and multilinear wave propagation paths into account. |
| Databáze: | OpenAIRE |
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