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Combination of Digital Image Correlation and Acoustic Emission for Characterizing Failure Modes in Strain-Hardening Cement-Based Composites (SHCC)

  • The tensile behavior of strain-hardening cement-based composites (SHCC) is usually investigated on macroscopic scale by means of direct tension tests or bending tests. Additionally, the micromechanical properties of the composites are often described based on single fiber tension and pull-out tests. Such investigations, performed both on macroscopic and microscopic scales, are based on ‘classical’ force and displacement measuring techniques. Advanced test methods such as digital image correlation (DIC) and acoustic emission analysis (AE) may facilitate the identification and the analysis of the failure mechanisms in SHCC, which is important for both monitoring loaded SHCC elements and further material development and optimization. In this study, these two techniques are combined to characterize the failure mechanisms of three different types of SHCC in direct tension tests. The results are related to data of stress and strain measurements. It is shown that DIC provides detailedThe tensile behavior of strain-hardening cement-based composites (SHCC) is usually investigated on macroscopic scale by means of direct tension tests or bending tests. Additionally, the micromechanical properties of the composites are often described based on single fiber tension and pull-out tests. Such investigations, performed both on macroscopic and microscopic scales, are based on ‘classical’ force and displacement measuring techniques. Advanced test methods such as digital image correlation (DIC) and acoustic emission analysis (AE) may facilitate the identification and the analysis of the failure mechanisms in SHCC, which is important for both monitoring loaded SHCC elements and further material development and optimization. In this study, these two techniques are combined to characterize the failure mechanisms of three different types of SHCC in direct tension tests. The results are related to data of stress and strain measurements. It is shown that DIC provides detailed spatially resolved and stress related strain measurements. Furthermore, it is demonstrated that AE allows for the localization of active cracks, quantification of the damage accumulation under increasing stresses, and characterization of the dominant crack bridging mechanisms and failure modes observed in the different types of SHCC.zeige mehrzeige weniger

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Metadaten
Autor*innen:Stephan PirskawetzORCiD, Götz HüskenORCiD, I. Curosu, V. Mechtcherine
Persönliche Herausgeber*innen:V. Mechtcherine, V. Slowik, P. Kabele
Dokumenttyp:Beitrag zu einem Tagungsband
Veröffentlichungsform:Graue Literatur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Strain-Hardening Cement-Based Composites
Jahr der Erstveröffentlichung:2017
Herausgeber (Institution):RILEM - International Union of Laboratories and Experts in Construction Materials, Systems and Structures
Verlag:Springer Science+Business Media B.V.
Verlagsort:Dordrecht, The Netherlands
Jahrgang/Band:15
Erste Seite:300
Letzte Seite:307
Freie Schlagwörter:Acoustic emission analysis; Cementitious composites; Digital image correlation; Fiber reinforcement; Multiple cracking; Strain-hardening; Tension
Veranstaltung:4th International RILEM Conference on Strain-Hardening Cement-Based Composites (SHCC4)
Veranstaltungsort:Technische Universität Dresden, Germany
Beginndatum der Veranstaltung:18.09.2017
Enddatum der Veranstaltung:20.09.2017
DOI:10.1007/978-94-024-1194-2
ISBN:978-94-024-1194-2
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:27.09.2017
Referierte Publikation:Ja
Datum der Eintragung als referierte Publikation:13.12.2018
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