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

> Research article (Infrared Physics & Technology, 2020) · cited 17× · AI/ML

**Wikidata**: [openalex:W3000911362](https://www.wikidata.org/wiki/openalex:W3000911362)  
**Source**: https://4ort.xyz/entity/automated-extraction-of-local-defect-resonance-using-the-principal-component-analysis-in-lock-in-ultrasonic-vibrothermog