Structural Integrity Assessment of Concrete Sleepers by Modal Test Technique

Concrete sleepers used in railway engineering are subject to damage, such as cracks and breakage. Damaged concrete sleepers undergo changes to their material and structural properties, including response, mode shape, and natural frequency. Therefore, we have proposed modal testing in this study to q...

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Bibliographic Details
Published inMaterials Vol. 16; no. 16; p. 5614
Main Authors Choi, Jung-Youl, Shin, Tae-Hyung, Kim, Sun-Hee, Chung, Jee-Seung
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 14.08.2023
MDPI
Subjects
Concrete
concrete sleeper
Cracks
Finite element analysis
Frequency analysis
Hammers
Impact damage
Inspection
modal testing
Numerical analysis
Performance evaluation
Prestressed concrete
Railway engineering
Resonant frequencies
Structural integrity
structural performance
Tomography
Trains
South Korea
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Summary:Concrete sleepers used in railway engineering are subject to damage, such as cracks and breakage. Damaged concrete sleepers undergo changes to their material and structural properties, including response, mode shape, and natural frequency. Therefore, we have proposed modal testing in this study to quantitatively evaluate the structural integrity of concrete sleepers. The results of modal testing were compared with those of numerical analysis and visual inspection. In addition, an impact hammer test was conducted to evaluate the structural performance of damaged concrete sleepers. The results show that natural-frequency analysis using the modal-testing technique can usefully complement visual inspection for structural performance evaluation in the field.
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content type line 23
ISSN:1996-1944
1996-1944
DOI:10.3390/ma16165614