PSI - Issue 52

4

Cheolwoo Park et al. / Procedia Structural Integrity 52 (2024) 480–486 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

483

Figure 2. Specimens inside electrical furnace

Figure 3. ISO 834 standard fire curve used in the experiment.

Bending test of the specimens were tested as shown in figure 4. Bending test of specimens before and after specimen exposure to high temperature was done and calculated from equation 2. Bending tests were conducted based on ASTM C 1609. Specimens were loaded at 200-ton class UTM (Universal Testing Machine), where the loaded power was applied by the displacement control at a speed of 1mm/min. The vertical deflection was, measured using Japanese yoke linear variable differential transformers on both sides simultaneously with the applied loading. A highly sensitive data logging devices was used to collect the precise data for further analysis.

Figure 4. (a) Experimental setup; (b) Failure on specimen after experiment. = /( ^2 ) (2)

Here, f = flexural strength P = maximum load

L = span distance (300 mm) b = specimen height (100 mm)