Monitoring concept for the propagation of compressive fatigue in externally prestressed concrete beams using digital image correlation and fiber optic sensors

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

Abstract

The fatigue of concrete has been the subject of research for many years, and yet, there are still open questions. In particular, the fatigue-induced damage evolution accompanied by a stress redistribution process propagating through the concrete structure is still not fully understood. So far, there are only few experimental studies addressing the fatigue propagation through a material zone occurring, for example, in beams with a pulsating, nonuniform stress profile. To investigate the influence of such stress configurations on the material and structural degradation process, a measuring concept has been developed combining digital image correlation, fiber optic sensors, and conventional strain gauges. The presented experiments visualize the propagating fatigue degradation in the compression zone of prestressed concrete beams subjected to fatigue loading. Based on the developed measurement concept, the quantitative foundation for a comprehensive validation of design rules and material models accounting for concrete fatigue can be significantly extended.

Details

OriginalspracheEnglisch
Seiten (von - bis)514-526
Seitenumfang13
FachzeitschriftFatigue and Fracture of Engineering Materials and Structures
Jahrgang46 (2023)
Ausgabenummer2
PublikationsstatusVeröffentlicht - 14 Nov. 2022
Peer-Review-StatusJa

Externe IDs

WOS 000883183500001
ORCID /0000-0001-8735-1345/work/142244600

Schlagworte

Forschungsprofillinien der TU Dresden

Fächergruppen, Lehr- und Forschungsbereiche, Fachgebiete nach Destatis

Schlagwörter

  • bending, compression, concrete, digital image correlation (DIC), fatigue, fiber optic sensors (FOS), strain development, Compression, Bending, Fatigue, Concrete, Strain development

Bibliotheksschlagworte