Baseline-free local stress measurement based on the multi-directional polarization characteristics of zero-group velocity Lamb waves

Key Points

• Local stress measurements are achievable without baseline reference, enhancing non-destructive testing.
• The method utilizes multi-directional polarization characteristics of zero-group velocity Lamb waves to gather data.
• This analysis highlights a novel way to measure stress in materials, contributing to engineering applications.
• The implications suggest further investigation to validate this method in real-world scenarios.