# Acoustic emission waveforms for damage monitoring in composite materials: Shifting in spectral density, entropy and wavelet packet transform

> Research article (Structural Health Monitoring, 2021) · cited 40× · AI/ML

**Wikidata**: [openalex:W3202738506](https://www.wikidata.org/wiki/openalex:W3202738506)  
**Source**: https://4ort.xyz/entity/acoustic-emission-waveforms-for-damage-monitoring-in-composite-materials-shifting-in-spectral-density-entropy-and-wavele