Ocena globine razpok v betonu z metodo Impact Echo

Ristić, Uroš (author), Brank, Boštjan (mentor), Bohinc, Uroš (comentor)

Glavni del magistrske naloge se nanaša na ocenjevanje globine razpok v betonu s pomočjo nedestruktivne metode imenovane Impact Echo. Predstavljeno je teoretično ozadje širjenja valov v elastičnih trdnih telesih in pripadajoča metodo končnih elementov. Prikazano je opravljeno eksperimentalno delo z Impact Echo metodo, kjer smo obravnavali dva sklopa razpok. Prvi sklop je zajemal navpične razpoke štirih globin: 149 mm, 119 mm, 88 mm in 58 mm. V drugem sklopu smo obravnavali razpoke posebnih konfiguracij. Pri eksperimentu smo uporabili postopke, ki so opisani v knjigi [1]. Za razpoko globine 149 mm smo naredili numerično simulacijo po metodi končnih elementov s programom Abaqus. Primerjavo eksperimentalnih in numeričnih rezultatov smo predstavili v obliki tabel in grafov. Pri numerični simulaciji smo dobili natančnejše rezultate.

• Language: Slovenian
• Keywords: metoda Impact Echo, nedestruktivne preiskave, globina razpoke, numerična analiza, Abaqus
• Work type: Master's thesis/paper
• Typology: 2.09 - Master's Thesis
• Organization: FGG - Faculty of Civil and Geodetic Engineering
• Publisher: [U. Ristić]
• Year: 2016
• PID: 20.500.12556/RUL-84884
• UDC: 539.219.2:624.04(497.4)(043)
• COBISS.SI-ID: 7589473
• Publication date in RUL: 28.05.2020

Secondary language

• Language: English
• Title: Evaluation of crack depth in concrete using Impact Echo method

Abstract

The main part of the master thesis is related to an evaluation of a crack depth in concrete by using a non-destructive method called Impact Echo. The theoretical background of the wave propagation in elastic solids and the related finite element method are presented. In the experimental work we performed measurements on two sets of cracks. The first set consisted of four vertical cracks of different depths: 149 mm, 119 mm, 88 mm and 58 mm. The second set consisted of cracks of specific configurations. We used the experimental procedures described in the book [1]. For a crack depth of 149 mm a numerical simulation was done by using the finite element method and Abaqus computer code. Comparison of the experimental and numerical results is presented in the tables and graphs. The numerical simulation accurately predicts the results.

• Keywords: Impact Echo method, nondestructive testing, crack depth, numerical analysis, Abaqus