Akustična emisija pri obremenjevanju kompozita

Sraka, Jakob (author), Kek, Tomaž (mentor)

V zaključni nalogi je obravnavano obnašanje biokompozita z bazaltnimi dvoosno usmerjenimi vlakni. S pomočjo prilagojenega sistema Arcan smo pri treh obremenitvenih stanjih (natezna, strižna in kombinirana natezno-strižna obremenitev) dokazovali korelacije med signali akustične emisije in mehanizmi poškodb, ki so prisotne pri kompozitnih materialih. Z analizo parametrov signalov akustične emisije smo identificirali različne procese poškodb ter pokazali korelacije med parametroma AF, RA, strižnimi in nateznimi razpokami.

• Language: Slovenian
• Keywords: akustična emisija, kompoziti, poškodbe kompozitov, senzorji, signali, aeronavtika
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FS - Faculty of Mechanical Engineering
• Place of publishing: Ljubljana
• Publisher: [J. Sraka]
• Year: 2024
• Number of pages: XII, 26 str.
• PID: 20.500.12556/RUL-159713
• UDC: 534:539.3:678.061(043.2)
• COBISS.SI-ID: 203303427
• Publication date in RUL: 19.07.2024

Secondary language

• Language: English
• Title: Acoustic emission at composite loading

Abstract

In the final assignment, the behavior of a biocomposite with basalt biaxial fibers is discussed. Using a modified Arcan system, we investigated the correlations between acoustic emission signals and damage mechanisms present in composite materials under three loading conditions (tensile, shear, and combined tensile-shear loading). By analyzing the parameters of acoustic emission signals, we identified various damage processes and demonstrated correlations between the parameters AF, RA, shear cracks, and tensile cracks.

• Keywords: acoustic emission, composites, composites failures, sensors, signals, aeronautics