Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Evaluation of flexural behaviour of cemented pavement material beams using distributed fibre optic sensors
https://orcid.org/0000-0003-0839-1045
HighlightsRayleigh-based DFOSs were surface-mounted to CPM beams.Static monotonic and cyclic four-point loading tests were performed on the CPM beams.The Rayleigh-based DFOS was able to detect crack initiation and growth in the CPM beams.The midspan deflection of CPM beams provides a useful method to estimate flexural strain.An improved equation was proposed to determine the modulus of CPMs for pavement design.
AbstractThis paper aims to evaluate the reliability and accuracy of the estimation of flexural strains in cemented pavement material (CPM) beams using a distributed fibre optic sensing technique. Static and dynamic four-point bending tests were performed on CPM beams equipped with distributed fibre optic sensors (DFOSs) and a linear variable differential transducer (LVDT). The strain data recorded by the DFOSs indicated that the midspan deflection measured by LVDT provides a reliable estimation of the flexural strain in CPM beams under both static and dynamic loading conditions. Moreover, the evolution of the strain profiles measured by DFOSs during the flexural tests clearly demonstrated the capability of DFOSs to detect crack initiation and propagation in CPM beams.
Evaluation of flexural behaviour of cemented pavement material beams using distributed fibre optic sensors
https://orcid.org/0000-0003-0839-1045
HighlightsRayleigh-based DFOSs were surface-mounted to CPM beams.Static monotonic and cyclic four-point loading tests were performed on the CPM beams.The Rayleigh-based DFOS was able to detect crack initiation and growth in the CPM beams.The midspan deflection of CPM beams provides a useful method to estimate flexural strain.An improved equation was proposed to determine the modulus of CPMs for pavement design.
AbstractThis paper aims to evaluate the reliability and accuracy of the estimation of flexural strains in cemented pavement material (CPM) beams using a distributed fibre optic sensing technique. Static and dynamic four-point bending tests were performed on CPM beams equipped with distributed fibre optic sensors (DFOSs) and a linear variable differential transducer (LVDT). The strain data recorded by the DFOSs indicated that the midspan deflection measured by LVDT provides a reliable estimation of the flexural strain in CPM beams under both static and dynamic loading conditions. Moreover, the evolution of the strain profiles measured by DFOSs during the flexural tests clearly demonstrated the capability of DFOSs to detect crack initiation and propagation in CPM beams.
Evaluation of flexural behaviour of cemented pavement material beams using distributed fibre optic sensors
https://orcid.org/0000-0003-0839-1045
HighlightsRayleigh-based DFOSs were surface-mounted to CPM beams.Static monotonic and cyclic four-point loading tests were performed on the CPM beams.The Rayleigh-based DFOS was able to detect crack initiation and growth in the CPM beams.The midspan deflection of CPM beams provides a useful method to estimate flexural strain.An improved equation was proposed to determine the modulus of CPMs for pavement design.
AbstractThis paper aims to evaluate the reliability and accuracy of the estimation of flexural strains in cemented pavement material (CPM) beams using a distributed fibre optic sensing technique. Static and dynamic four-point bending tests were performed on CPM beams equipped with distributed fibre optic sensors (DFOSs) and a linear variable differential transducer (LVDT). The strain data recorded by the DFOSs indicated that the midspan deflection measured by LVDT provides a reliable estimation of the flexural strain in CPM beams under both static and dynamic loading conditions. Moreover, the evolution of the strain profiles measured by DFOSs during the flexural tests clearly demonstrated the capability of DFOSs to detect crack initiation and propagation in CPM beams.
Evaluation of flexural behaviour of cemented pavement material beams using distributed fibre optic sensors
Sounthararajah, Arooran (Autor:in) / Wong, Leslie (Autor:in) / Nguyen, Nhu (Autor:in) / Bui, Ha Hong (Autor:in) / Kodikara, Jayantha (Autor:in)
Construction and Building Materials ; 156 ; 965-975
07.09.2017
11 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
<italic>B</italic> , beam width , CPM , cemented pavement material , CTB , cement-treated base , DFOS , distributed fibre optic sensor , <italic>E<inf>design</inf></italic> , design modulus , <italic>E<inf>flex</inf></italic> , flexural modulus , <italic>E<inf>secant</inf></italic> , secant flexural modulus , GP , general purpose , <italic>H</italic> , beam height , HRB , Holcim road base , <italic>L</italic> , span length , LVDT , linear variable differential transducer , ODiSI , optical distributed sensor interrogator , OFDR , optical frequency domain reflectometry , <italic>P<inf>break</inf></italic> , breaking load , <italic>P<inf>cyclic</inf></italic> , applied cyclic load , <italic>P<inf>max</inf></italic> , maximum applied load , <italic>P<inf>min</inf></italic> , minimum applied load , y , distance from the neutral axis of the beam , <italic>δ<inf>cyclic,mid</inf></italic> , cyclic flexural deflection at midspan , <italic>δ<inf>flex</inf></italic> , flexural deflection , <italic>δ<inf>flex,mid</inf></italic> , flexural deflection at midspan , <italic>δ<inf>max,mid</inf></italic> , total midspan vertical deflection , <italic>δ<inf>min,mid</inf></italic> , minimum midspan vertical deflection , <italic>δ<inf>plastic,mid</inf></italic> , permanent midspan vertical deflection , <italic>ε</italic> , strain , <italic>ε<inf>cyclic,mid</inf></italic> , cyclic midspan flexural strain , <italic>ε<inf>flex</inf></italic> , flexural strain , <italic>ε<inf>flex,mid</inf></italic> , midspan flexural strain , <italic>ε<inf>plastic,mid</inf></italic> , plastic strain at midspan , <italic>σ<inf>cyclic</inf></italic> , cyclic flexural stress , <italic>σ<inf>max</inf></italic> , maximum flexural stress , <italic>σ<inf>min</inf></italic> , minimum flexural stress , <italic>σ<inf>0</inf></italic> , flexural strength , Distributed fibre optic sensors (DFOSs) , Cement-treated pavement materials , Crack detection , Distributed strain measurement , Flexural fatigue , Plastic strain accumulation , Flexural modulus
| British Library Online Contents | 2017
| British Library Online Contents | 2017
| British Library Online Contents | 2017