# Nonlinear ultrasonic concrete crack identification with deep learning based on time-frequency image

> Research article (Nondestructive Testing And Evaluation, 2023) · cited 30× · AI/ML

**Wikidata**: [openalex:W4386099508](https://www.wikidata.org/wiki/openalex:W4386099508)  
**Source**: https://4ort.xyz/entity/nonlinear-ultrasonic-concrete-crack-identification-with-deep-learning-based-on-time-frequency-image