Evaluation of the fatigue life of an airborne ultrasonic sound source using the stress–number of cycles to failure curve
Abstract
Abstract The durability of an airborne ultrasonic sound source was evaluated based on the material’s fatigue characteristics represented by the stress–number of cycles to failure curve. A 55 kHz aluminum sound source was driven under controlled vibrational stress until failure. The results showed a clear correlation between vibrational stress and fatigue life, with failure occurring above approximately 165 MPa. Measurements of admittance magnitude–frequency characteristics and vibration displacement distribution revealed deterioration in resonance characteristics after failure. These findings demonstrate that the proposed method is effective for quantitatively evaluating and predicting the lifetime of sound sources.
Fields of Study & Subjects
Fatigue and fracture mechanics
Ultrasonics and Acoustic Wave Propagation
Mechanical Failure Analysis and Simulation
Publication details
- Journal / source
- Japanese Journal of Applied Physics
- Volume
- 65
- Issue
- 4
- Pages
- 048001–048001
- Publication date
- 9 February 2026
- Language
- EN