Investigation of a new experimental method for damage assessment of RC beams failing in shear using piezoelectric transducers

Voutetaki, Maristella E.; Papadopoulos, N.; Angeli, Georgia M.; Providakis, C. P.

doi:10.1016/j.engstruct.2016.02.014

Cited by 99 publications

(52 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, PZT materials can be used and embedded in concrete to induce and detect wave propagation and vibrations [5,17,18,23]. Through different approaches, the piezoelectric sensors can use to estimate the strength of concrete.…”

Section: Piezoelectric Sensormentioning

confidence: 99%

Real-Time Strength Monitoring for Concrete Structures Using EMI Technique Incorporating with Fuzzy Logic

et al. 2018

View full text Add to dashboard Cite

This study estimates the strength of a special mixture of high-strength concrete (HSC) with admixtures for use in a nuclear power plant (NPP). Nuclear power plant structures need a HSC with some additional qualities to operate the safe options. For this purpose, the experimented concrete was specially designed to fulfill the required qualities of NPP. For gaining these desirable qualities, it needs to monitor the concrete strength development process. Here, the PZT materials were used as sensors to acquire data by measuring the electromechanical impedance (EMI), and then cross correlation (CC) was calculated to look at changes according to strength development. Data were measured for 28 days, and over this period concrete can gain up to 96% of its design strength. This technique is based on a single sensor. After casting concrete, the PZT material starts vibrating as an actuator to produce vibrations. At the same time, it also works as a sensor to measure the dynamic response of the structure to the vibrations. With strength development, the resonant frequencies of the EMI start changing. To estimate the strength development, a fuzzy logic tool was used to analyze the parameters, allowing for us to estimate and predict the concrete strength. For cross-checking, the estimated strength was compared with the actual strength of concrete; this was determined by examining cuboid cores taken from specimens during experiments at the 1st, 3rd, 7th, 14th, and 28th days. According to the results, this approach of strength estimation and monitoring the strength development is useful for forecasting the stability of structures.

show abstract

Section: Piezoelectric Sensormentioning

confidence: 99%

Real-Time Strength Monitoring for Concrete Structures Using EMI Technique Incorporating with Fuzzy Logic

et al. 2018

View full text Add to dashboard Cite

show abstract

“…That value is significantly influenced by the height of the compression zone. 31 It should also be mentioned that the residual tensile stresses along shear crack can exist and be relevant in some cases, particularly, for nonslender beams. The movements along the diagonal crack and between the two crack surfaces leads to normal (σ ag ) and friction stresses (τ ag ) that also contribute to the shear strength capacity ( Figure 2).…”

Section: Key-parameters To Understand and Predict The Shear Transfementioning

confidence: 99%

Evaluation of the shear transfer mechanisms in reinforced concrete beams using photogrammetry

Valença

Carmo

2019

Structural Concrete

View full text Add to dashboard Cite

The models to predict the shear behavior in reinforced concrete (RC) members are still far from be consensual. Thus, a detailed understanding of the physical phenomenon and a detailed monitoring of shear tests on RC members is fundamental. Identify and quantify separately the contribution of each component of the shear transfer mechanism it is a challenge. The traditional instrumentation usually results in the evaluation of a limited number of sections. Additionally, technologies based on image analysis have been applied to structural monitoring with excellent results. In this paper, the method Photo‐Shear, developed to monitoring shear tests based on photogrammetry, is presented. The method allows a better understanding of the shear strength mechanism by acquiring data from the surface of RC members. Then, postprocessing procedures leads to outputs with the redundancy and complementarity necessary to characterize: (a) displacement and strain fields; (b) overall shear deformation (distortion and rotation); (c) load path and direction of the compression strut; (d) shear cracks' characterization; and (e) the aggregate interlock effect. The method was validated by monitoring two RC beams tests. Based on the results obtained, several advantages of the proposed Photo‐Shear method were demonstrated over the traditional instrumentation, namely, the quantity and quality of the information obtained, and the redundancy and complementarity of the results analyzed.

show abstract

“…Chalioris et al [27] proposed an Electro-Mechanical Admittance (EMA) procedure for detecting and evaluating damage in a shear critical RC beam using the admittance signatures of embedded SA transducers and externally bonded piezoelectric patches. Voutetaki et al [28] developed an innovative portable real-time wireless impedance admittance monitoring system for diagnosing damage to shear-critical RC beams. Karayannis et al [29] applied the finite element modeling with admittance-based signature data to analyze its accuracy and to evaluate the potential use of this technique to monitor structural damage in real time.…”

Section: Introductionmentioning

confidence: 99%

Structural Health Monitoring and Interface Damage Detection for Infill Reinforced Concrete Walls in Seismic Retrofit of Reinforced Concrete Frames Using Piezoceramic-Based Transducers Under the Cyclic Loading

et al. 2019

View full text Add to dashboard Cite

In this work, the piezoceramic-based transducers are used to perform the structural health monitoring (SHM) and interface damage detecting of non-ductile reinforced concrete (RC) frames retrofitted by post-installed RC walls. In order to develop the post-embedded piezoceramic-based transducers that can be used to identify interface failure or cracks between two structural members in retrofit construction, this work adopts the cyclic loading to test two specimens with post-embedded piezoceramic-based transducers (PPT). Since the failure of an interface between the post-installed wall and beam occurs, one of the specimens has damage in the foundation and existing boundary column and the other has damage in the top ends of column and wall. During the cyclic loading test, one transducer was used as an actuator to generate the stress waves and the other transducers were used as the sensors to detect the waves. In damaged specimens, the existence and locations of cracks and the interface damage can be detected by analyzing the wave response. Moreover, the severity of damage to the specimens can also be estimated. The experimental results indicate the effectiveness of the piezoceramic-based approach in the SHM and locating damage in shear-critical RC structural members under the seismic loading.

show abstract

Investigation of a new experimental method for damage assessment of RC beams failing in shear using piezoelectric transducers

Cited by 99 publications

References 47 publications

Real-Time Strength Monitoring for Concrete Structures Using EMI Technique Incorporating with Fuzzy Logic

Real-Time Strength Monitoring for Concrete Structures Using EMI Technique Incorporating with Fuzzy Logic

Evaluation of the shear transfer mechanisms in reinforced concrete beams using photogrammetry

Structural Health Monitoring and Interface Damage Detection for Infill Reinforced Concrete Walls in Seismic Retrofit of Reinforced Concrete Frames Using Piezoceramic-Based Transducers Under the Cyclic Loading

Contact Info

Product

Resources

About