SANCHEZ ALVARADO, Andrés G.; OSPINA GARCÍA, Miguel Ángel; CARRILLO LEÓN, Wilmer Julian; PARRA GOMEZ, Yohana Catalina; CHAVES PABÓN, Saieth Baudilio. MECHANICAL DAMAGE ASSESSMENT IN CONCRETE BEAMS REINFORCED WITH STEEL AND POLYPROPYLENE FIBERS USING ULTRASONIC PULSE VELOCITY TESTING. Journal of Applied Engineering Science, [S. l.], v. 24, n. 2, p. 213–226, 2026. DOI: 10.5937/jaes0-60077. Dostupno na: https://asistent.ceon.rs/index.php/jaes/article/view/60077. Pristupljeno: 12 jul. 2026.