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Assessment of C/PPS composites degradation indicators using acoustic measurement
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SYSNO ASEP 0359522 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Assessment of C/PPS composites degradation indicators using acoustic measurement Author(s) Kytýř, Daniel (UTAM-F) SAI, RID, ORCID
Valach, Jaroslav (UTAM-F) SAI, ORCID, RID
Doktor, Tomáš (UTAM-F) RID, SAI, ORCID
Jiroušek, Ondřej (UTAM-F) RID, SAINumber of authors 4 Source Title Engineering Mechanics 2011. - Prague : Institute of Thermomechanics AS CR, v. v. i., 2011 / Fuis V. - ISBN 978-80-87012-33-8 Pages s. 355-358 Number of pages 4 s. Publication form WWW - WWW Action Engineering Mechanics 2011 /17./ Event date 09.05.2011-12.05.2011 VEvent location Svratka Country CZ - Czech Republic Event type EUR Language eng - English Country CZ - Czech Republic Keywords acoustic measurement ; material degradation ; composite materials Subject RIV JI - Composite Materials CEZ AV0Z20710524 - UTAM-F (2005-2011) UT WOS 000313492700082 Annotation Changes of mechanical properties, namely of modulus of elasticity, often play a role of damage accumulation indicators in the framework of fatigue behaviour of composite materials. In order to improve the reliability of these indicators for identification of material degradation process it is necessary to eliminate the influence of external loading and volume forces associated with thermal expansion of heterogeneous material at various temperatures. Therefore the paper deals with description of experimental assessment of relation between external load and material stiffness and also studies the dependency of material stiffness on temperature. For the monitoring of degradation process ultrasonic measurement was used. Obtained results are discussed with respect to fatigue testing of material and also interpreted from the micromechanical point of view. Workplace Institute of Theoretical and Applied Mechanics Contact Kulawiecová Kateřina, kulawiecova@itam.cas.cz, Tel.: 225 443 285 Year of Publishing 2012
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