Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Pullout experiments on bonded anchors monitored via acoustic emission techniques
Fastening techniques are nowadays widely used in civil engineering to fix hybrid components and to enable for efficient structures. One of the major concerns is the sustainability of the fastening techniques and - in regard to anchors - the bond between the anchor and the cementitious matrix. The understanding of bonded anchors and their behaviour under long-term load is essential for their proper usage. Therefore pull-out experiments, monitored with acoustic emission techniques, where conducted. The localization of the acoustic emissions provides insight into the mechanics of bonded anchors and particularly the failure of the bond. Data processing was done using Matlab. For onset picking the AIC picking procedure was implemented and the Bancroft algorithm was used for 3D localization. To verify the localization results obtained with the Bancroft algorithm the Geiger Method was utilized. Results show, that the location of acoustic emission sources is changing with increasing load. Comparing these results with finite element simulations a correlation could be found, indicating that the bond stress is spreading along the anchor with increasing load.
Pullout experiments on bonded anchors monitored via acoustic emission techniques
Fastening techniques are nowadays widely used in civil engineering to fix hybrid components and to enable for efficient structures. One of the major concerns is the sustainability of the fastening techniques and - in regard to anchors - the bond between the anchor and the cementitious matrix. The understanding of bonded anchors and their behaviour under long-term load is essential for their proper usage. Therefore pull-out experiments, monitored with acoustic emission techniques, where conducted. The localization of the acoustic emissions provides insight into the mechanics of bonded anchors and particularly the failure of the bond. Data processing was done using Matlab. For onset picking the AIC picking procedure was implemented and the Bancroft algorithm was used for 3D localization. To verify the localization results obtained with the Bancroft algorithm the Geiger Method was utilized. Results show, that the location of acoustic emission sources is changing with increasing load. Comparing these results with finite element simulations a correlation could be found, indicating that the bond stress is spreading along the anchor with increasing load.
Pullout experiments on bonded anchors monitored via acoustic emission techniques
Raith, Manuel (Autor:in) / Grosse, Christian U. (Autor:in) / Kränkel, Thomas (Autor:in)
2014
6 Seiten, Bilder, 6 Quellen
Aufsatz (Konferenz)
Datenträger
Englisch
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