ACOUSTOELASTIC EFFECTS ON THE NATURAL FREQUENCIES OF PRE-STRESSED CONCRETE BEAMS
Författare
Summary, in Swedish
Abstract in Undetermined
Pre-stressed concrete is used to increase the load capacity in many civil engineering structures. There is a need for non-destructive methods to estimate the potential loss of pre-stress in these structures. In this study we investigate the acoustoelastic effect on the natural resonance frequencies of a pre-stressed concrete beam. Measured resonant frequencies increase with increasing compressive stress. Results agree with predicted frequency shifts obtained from a non-linear finite element model based on Murnaghan's third order elastic theory.
Pre-stressed concrete is used to increase the load capacity in many civil engineering structures. There is a need for non-destructive methods to estimate the potential loss of pre-stress in these structures. In this study we investigate the acoustoelastic effect on the natural resonance frequencies of a pre-stressed concrete beam. Measured resonant frequencies increase with increasing compressive stress. Results agree with predicted frequency shifts obtained from a non-linear finite element model based on Murnaghan's third order elastic theory.
Publiceringsår
2011
Språk
Engelska
Sidor
1379-1385
Publikation/Tidskrift/Serie
Review of Progress in Quantitative Nondestructive Evaluation (AIP Conference Proceedings)
Volym
1335
Dokumenttyp
Konferensbidrag
Förlag
American Institute of Physics (AIP)
Ämne
- Geotechnical Engineering
- Building Technologies
Nyckelord
- finite element analysis
- concrete
- creep
- wave propagation
Conference name
37th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE)
Conference date
2010-07-18 - 2010-07-23
Status
Published
ISBN/ISSN/Övrigt
- ISBN: 978-0-7354-0888-3