Automated extraction of local defect resonance using the principal component analysis in lock-in ultrasonic vibrothermography

Engineering

• Principal Components 100%
• Ultrasonics 100%
• Resonance Frequency 100%
• Component Analysis 100%
• Good Agreement 33%
• Subsurface 33%
• Finite Element Modeling 33%
• Optimal Frequency 33%
• Thermal Penetration Depth 33%
• Phase Image 33%
• Elastic Energy 33%
• Experimental Result 33%
• Modulation Frequency 33%
• Finite Element Analysis 33%
• Surface Defect 33%

Material Science

• Surface (Surface Science) 100%
• Surface Defect 50%
• Finite Element Method 50%
• Finite Element Modeling 50%
• Viscoelastic Behavior 50%
• Non-Destructive Testing 50%

Physics

• Ultrasonics 100%
• Frequency Modulation 50%
• Sine Wave 50%
• Surface Defect 50%
• Finite Element Analysis 50%