THE FATIGUE BEHAVIOUR OF GFRP BARS - EXPERIMENTAL STUDY
The paper describes an experimental program for studying the fatigue performance of GFRP bars, which has been initiated by the authors. Two different test configurations were used to assess the fatigue behaviour. The bare specimens were tested within the first series. A modified gripping system was...
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2019-07-01
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doaj-52ffd34a12f54700969c603d4186a9072020-11-25T01:18:06ZengCTU Central LibraryActa Polytechnica CTU Proceedings2336-53822019-07-01220384710.14311/APP.2019.22.00384556THE FATIGUE BEHAVIOUR OF GFRP BARS - EXPERIMENTAL STUDYOndřej JanušFrantišek GirgleIva RozsypalováVojtěch KostihaLenka BodnárováPetr ŠtěpánekJan ProkešThe paper describes an experimental program for studying the fatigue performance of GFRP bars, which has been initiated by the authors. Two different test configurations were used to assess the fatigue behaviour. The bare specimens were tested within the first series. A modified gripping system was used to reduce eccentricity when the bar was not directly fixed. However, the boundary conditions seem to affect the results. The second series consisted of a set of specimens of bars embedded in concrete. This configuration seems appropriate for determination of fatigue life of GFRP bars. Two S-N curves for bare bars and bars embedded in concrete were created and compared. Significant reduction of interlaminar shear strength at the beginning of fatigue loading proved matrix or fibre/matrix interface damage.https://ojs.cvut.cz/ojs/index.php/APP/article/view/5648composite, cyclic loading, fatigue, GFRP, reinforcement, stiffness, S-N curve |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ondřej Januš František Girgle Iva Rozsypalová Vojtěch Kostiha Lenka Bodnárová Petr Štěpánek Jan Prokeš |
spellingShingle |
Ondřej Januš František Girgle Iva Rozsypalová Vojtěch Kostiha Lenka Bodnárová Petr Štěpánek Jan Prokeš THE FATIGUE BEHAVIOUR OF GFRP BARS - EXPERIMENTAL STUDY Acta Polytechnica CTU Proceedings composite, cyclic loading, fatigue, GFRP, reinforcement, stiffness, S-N curve |
author_facet |
Ondřej Januš František Girgle Iva Rozsypalová Vojtěch Kostiha Lenka Bodnárová Petr Štěpánek Jan Prokeš |
author_sort |
Ondřej Januš |
title |
THE FATIGUE BEHAVIOUR OF GFRP BARS - EXPERIMENTAL STUDY |
title_short |
THE FATIGUE BEHAVIOUR OF GFRP BARS - EXPERIMENTAL STUDY |
title_full |
THE FATIGUE BEHAVIOUR OF GFRP BARS - EXPERIMENTAL STUDY |
title_fullStr |
THE FATIGUE BEHAVIOUR OF GFRP BARS - EXPERIMENTAL STUDY |
title_full_unstemmed |
THE FATIGUE BEHAVIOUR OF GFRP BARS - EXPERIMENTAL STUDY |
title_sort |
fatigue behaviour of gfrp bars - experimental study |
publisher |
CTU Central Library |
series |
Acta Polytechnica CTU Proceedings |
issn |
2336-5382 |
publishDate |
2019-07-01 |
description |
The paper describes an experimental program for studying the fatigue performance of GFRP bars, which has been initiated by the authors. Two different test configurations were used to assess the fatigue behaviour. The bare specimens were tested within the first series. A modified gripping system was used to reduce eccentricity when the bar was not directly fixed. However, the boundary conditions seem to affect the results. The second series consisted of a set of specimens of bars embedded in concrete. This configuration seems appropriate for determination of fatigue life of GFRP bars. Two S-N curves for bare bars and bars embedded in concrete were created and compared. Significant reduction of interlaminar shear strength at the beginning of fatigue loading proved matrix or fibre/matrix interface damage. |
topic |
composite, cyclic loading, fatigue, GFRP, reinforcement, stiffness, S-N curve |
url |
https://ojs.cvut.cz/ojs/index.php/APP/article/view/5648 |
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