PSI - Issue 64

Ali Saeedi et al. / Procedia Structural Integrity 64 (2024) 2044–2050 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

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Table 1. The mechanical and physical properties of Fe-SMA and concrete

Material

Property

Value

Young's modulus Poisson's ratio Coefficient of thermal expansion Thermal conductivity Heat capacity Austenite modulus Poisson's ratio Austenite start and finish temperatures Thermal conductivity Heat capacity Electrical conductivity

22 GPa 0.2 1.2×10 −5 ( 1 ) 1.3 (W/m.K) 1000 (J/kg.K) 160 GPa 0.3 45 and 190 o C 8.4 (W/m.K) 540 (J/kg.K) 0.5×10 6 ( )

Concrete

Fe-SMA

Fig. 1. Cross sections of the two types of Fe-SMA reinforcement.

3. Results and discussion 3.1. Verification of the model

Initially, the model was employed to simulate the activation of Fe-SMA under the same conditions used in the experiments (Czaderski et al. (2014)). In the experimental study, the concrete beam used had a length of 700 mm and a rectangular cross-section measuring 50 mm by 35 mm. The comparison between the model results and experimental data regarding the temperature of the Fe-SMA reinforcement during activation is illustrated in Fig. 2. The modeling results show a good agreement with the experimental findings. Therefore, the model can effectively be used for parametric studies to examine the effects of various parameters. Upon validating the model with experimental data, a parametric analysis is conducted to investigate the influence of activation and geometric parameters on the temperature distribution across the structure. The following sections detail the examination of how activation voltage and the shape and size of the reinforcement affect these temperature patterns.