Work

Experimental observations of ultrasonic waves reflecting from and passing through a crack

Year: 2025

Type: article

Abstract: A crack was introduced into a glass plate by applying thermal stress and the propagation characteristics of longitudinal ultrasonic waves at this crack were observed using the photoelastic method. Waves incident to the closed crack were found to completely pass through and no flaw echo was observed on an A-scope display. Propagating waves at a slightly open crack were also observed using a sensitive tint technique. The results indicated that the tensile phase of these waves was reflected at the crack whereas the compressive phase was transmitted. Multi-cycle ultrasonic waves were visualized and frequency analyses were carried out based on the luminance distribution. Immediately after passing through the crack, a component of the incident wave having half the initial frequency was observed. The generation of intense harmonics at the crack was also confirmed by a finite difference time domain analysis.

Source: Ultrasonics

DOI: 10.1016/j.ultras.2025.107898

Authors: Masahiro Suetsugu, Kaori Shirakihara, Minoru Tamiaki, Kouichi Sekino

Institutions: National Institute of Technology, Suzuka College, Kanagawa Institute of Industrial Science and Technology

Language: English

Topic: Ultrasonics and Acoustic Wave Propagation

Subfield: Mechanics of Materials

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,680

Funder: Japan Society for the Promotion of Science