Uncovering avalanche sources via acceleration measurements.

ABSTRACT: Avalanche sources describe rapid and local events that govern deformation processes in various materials. The fundamental differences between an avalanche source and its associated measured acoustic emission (AE) signal are encoded in the acoustic transfer function, which undesirably modifies the properties of the source. Consequently, information about the physical characteristics of avalanche sources is scarce and its exposure poses a great challenge. We introduce a novel experimental method based on acceleration measurements, which eliminates the effect of the transfer function and distills the avalanche source. Applying this method to deformation twinning in magnesium shows that the amplitudes and characteristic times of avalanche sources are unrelated by a clear physical law. Converse

SUBMITTER: Bronstein E 

PROVIDER: S-EPMC11362599 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature