# Defect measurement using the laser ultrasonic technique based on power spectral density analysis and wavelet packet energy

> Research article (Microwave and Optical Technology Letters, 2021) · cited 21× · AI/ML

**Wikidata**: [openalex:W3162933824](https://www.wikidata.org/wiki/openalex:W3162933824)  
**Source**: https://4ort.xyz/entity/defect-measurement-using-the-laser-ultrasonic-technique-based-on-power-spectral-density-analysis-and-wavelet-packet-ener