Rege, Ameya Govind und Schwan, Marina und Chernova, Liudmila und Hillgärtner, Markus und Itskov, Mikhail und Milow, Barbara (2019) Microstructural and mechanical characterization of carbon aerogels: An in-situ and digital image correlation-based study. Journal of Non-Crystalline Solids, 529, Seite 119568. Elsevier. ISSN 0022-3093.
Es ist eine neuere Version dieses Eintrags verfügbar. |
Dieses Archiv kann nicht den Volltext zur Verfügung stellen.
Kurzfassung
The mechanical behavior of carbon aerogels is not very well understood, presenting a bottle-neck in synthesizing aerogels for specific applications where mechanical loads play a role. Accordingly, in this paper, three different types of carbon aerogels with varying mechanical properties and flexibility are synthesized and analyzed. The morphology is characterized by using a scanning electron microscope (SEM) and nitrogen adsorption-desorption isotherms. The mechanical behavior is investigated under uniaxial quasistatic compression as well as in-situ compression under a SEM. While in-situ tests reveal microstructural evolution under deformation, the macroscopic deformation is described by the digital image correlation. Based on cyclic compression tests with step-wise increasing strain amplitude, novel empirical relations are proposed to describe the damage characteristics such as energy dissipation and residual deformation. Furthermore, while testing carbon aerogels under tension is not very feasible, three-point bending tests are conducted and the resulting flexural properties of carbon aerogels are identified.
elib-URL des Eintrags: | https://elib.dlr.de/130244/ | ||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||||||||||||||
Titel: | Microstructural and mechanical characterization of carbon aerogels: An in-situ and digital image correlation-based study | ||||||||||||||||||||||||||||
Autoren: |
| ||||||||||||||||||||||||||||
Datum: | Oktober 2019 | ||||||||||||||||||||||||||||
Erschienen in: | Journal of Non-Crystalline Solids | ||||||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||||||||||
In ISI Web of Science: | Ja | ||||||||||||||||||||||||||||
Band: | 529 | ||||||||||||||||||||||||||||
Seitenbereich: | Seite 119568 | ||||||||||||||||||||||||||||
Verlag: | Elsevier | ||||||||||||||||||||||||||||
ISSN: | 0022-3093 | ||||||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||||||
Stichwörter: | carbon aerogels, mechanical behavior, in-situ study, DIC | ||||||||||||||||||||||||||||
HGF - Forschungsbereich: | Energie | ||||||||||||||||||||||||||||
HGF - Programm: | Energieeffizienz, Materialien und Ressourcen | ||||||||||||||||||||||||||||
HGF - Programmthema: | Methoden und Konzepte für Materialentwicklung | ||||||||||||||||||||||||||||
DLR - Schwerpunkt: | Energie | ||||||||||||||||||||||||||||
DLR - Forschungsgebiet: | E VS - Verbrennungssysteme | ||||||||||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | E - Materialien für die Energietechnik (alt) | ||||||||||||||||||||||||||||
Standort: | Köln-Porz | ||||||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Werkstoff-Forschung > Aerogele und Aerogelverbundwerkstoffe | ||||||||||||||||||||||||||||
Hinterlegt von: | Schwan, Marina | ||||||||||||||||||||||||||||
Hinterlegt am: | 03 Jan 2020 11:44 | ||||||||||||||||||||||||||||
Letzte Änderung: | 03 Jan 2020 11:44 |
Verfügbare Versionen dieses Eintrags
- Microstructural and mechanical characterization of carbon aerogels: An in-situ and digital image correlation-based study. (deposited 03 Jan 2020 11:44) [Gegenwärtig angezeigt]
Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags