One of the most promising technologies of today concerns the inclusion of nanochannels into polymer in order to develop composites with self-healing ability. Nanochannels carry healing agent that aims to fill and repair cracks at micro-scale. The damage processes of nanochannels reinforced polymers is complex and differentiates from pure polymer. Indepth damage assessment remains challenging since there is no testing procedure that permits crack arrest at micro-scale. In practice, the mechanical response of nanochannel polymers is measured applying fatigue regime simulating loading cycles in service life. But the moment that stiffness degradation is detected there is extended macrocracking due to brittle nature of polymers. In other words, stiffness degradation cannot be considered as guide to arrest testing at crack nucleation stage. To overcome this issue, Acoustic Emission technique is applied during fatigue tests in order to monitor early stage damage. Based on acoustic wave features analysis, the test stops as soon as fracture process zone forms and before degradation in stiffness is measured.
Original languageEnglish
Title of host publication12th European conference on Non-Destructive Testing
Subtitle of host publication12th ECNDT
Place of PublicationGothenburg
Number of pages8
Publication statusPublished - 11 Jun 2018
Event12th European Conference on Non-Destructive Testing - Gothenburg, Sweden
Duration: 11 Jun 201815 Jun 2018
http://www.ecndt2018.com/

Conference

Conference12th European Conference on Non-Destructive Testing
Abbreviated titleECNDT12
CountrySweden
Period11/06/1815/06/18
Internet address

ID: 43813966