# Concrete Condition Assessment Using Impact-Echo Method and Extreme Learning Machines

> Research article (Sensors, 2016) · cited 92× · AI/ML

**Wikidata**: [openalex:W2307346736](https://www.wikidata.org/wiki/openalex:W2307346736)  
**Source**: https://4ort.xyz/entity/concrete-condition-assessment-using-impact-echo-method-and-extreme-learning-machines