Metal material performance detection method based on longitudinal wave resonance, sensor and system
By employing a laser-electromagnetic ultrasonic testing method based on longitudinal wave resonance, combined with power spectral density analysis and PSD signal processing, the problem of insufficient signal strength and signal-to-noise ratio in the detection of metallic materials under high-temperature environments has been solved, enabling efficient and accurate detection of aerospace metallic materials.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NANCHANG HANGKONG UNIVERSITY
- Filing Date
- 2024-10-24
- Publication Date
- 2026-06-12
AI Technical Summary
Existing ultrasonic testing technologies are difficult to effectively test metallic materials in high-temperature environments, especially irregularly shaped components and complex interfaces. Furthermore, their signal strength and signal-to-noise ratio are insufficient, failing to meet the high-temperature testing requirements of aerospace metallic materials.
A method for testing the properties of metallic materials based on longitudinal wave resonance is adopted. This method utilizes a laser, an electromagnetic ultrasonic transducer (EMAT), and a magnetic ring to generate an ultrasonic resonance signal through laser excitation. Combined with power spectral density analysis and PSD signal processing, non-contact testing is achieved.
It significantly improves the amplitude and signal-to-noise ratio of the detection signal, enabling accurate assessment of the performance and damage of metallic materials in high-temperature environments. It is suitable for online monitoring of complex structures and provides detection capabilities in high-temperature vibration environments.
Smart Images
Figure CN119395135B_ABST