# Feature Extraction of Echo Signal of Weld Defect Guided Waves Based on Sparse Representation

> Research article (IEEE Sensors Journal, 2019) · cited 20× · AI/ML

**Wikidata**: [openalex:W2989575661](https://www.wikidata.org/wiki/openalex:W2989575661)  
**Source**: https://4ort.xyz/entity/feature-extraction-of-echo-signal-of-weld-defect-guided-waves-based-on-sparse-representation