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Similarity law for two-dimensional propagation behavior of ultrasonic wave in concentrically curved fiber CFRP

Similarity law for two-dimensional propagation behavior of ultrasonic wave in concentrically curved fiber CFRP

Authors :
Takeshi Ashizawa
Nobuyuki Toyama
Yoshiro Suzuki
Yoshihiro Mizutani
Akira Todoroki
Source :
Composite Structures. 233:111714
Publication Year :
2020
Publisher :
Elsevier BV, 2020.

Abstract

This study investigated the similarity law of ultrasonic propagation in CFRP with concentrically curved fibers. The similarity law was formulated by introducing a new dimensionless number D. Additionally, the similarity law for a two-dimensionally propagating bulk wave was mathematically proven using the governing equation. A numerical simulation was conducted to visually demonstrate how this similarity law is held in CFRP with concentrically curved fibers. The simulation results revealed that the wavefronts of waves generated at different points had geometrically similar shapes when the D values for each wavefront were identical. The experimental visualization of ultrasonic propagation through a CFRP plate with concentrically curved fibers was also conducted, and the results revealed that the similarity law held in actual CFRP material specimens.

Details

ISSN :
02638223
Volume :
233
Database :
OpenAIRE
Journal :
Composite Structures
Accession number :
edsair.doi.dedup.....7632780e5621475300ab21534fd7778b
Full Text :
https://doi.org/10.1016/j.compstruct.2019.111714