# A novel aging state recognition method of a viscoelastic sandwich structure based on permutation entropy of dual-tree complex wavelet packet transform and generalized Chebyshev support vector machine

> Research article (Structural Health Monitoring, 2019) · cited 16× · AI/ML

**Wikidata**: [openalex:W2923442905](https://www.wikidata.org/wiki/openalex:W2923442905)  
**Source**: https://4ort.xyz/entity/a-novel-aging-state-recognition-method-of-a-viscoelastic-sandwich-structure-based-on-permutation-entropy-of-dual-tree-co