PSI - Issue 79

Abubakr E.S. Musa et al. / Procedia Structural Integrity 79 (2026) 206–216

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corrosion, while the T2 to T4 groups simulate different levels of corrosion-induced thickness reduction in the middle of the tube to study its impact on structural behavior. Table 1 Specimens details No. Specimen Designation Thickness reduction ∆ t Width B Hight L Corrosion Location 1 T1-1 0.0 None None None 2 T1-2 0.0 None None None 3 T2-1 1.0 100 80 Middle 4 T2-2 1.0 100 80 Middle 5 T3-1 1.5 100 80 Middle 6 T3-2 1.5 100 80 Middle 7 T4-1 2.0 100 80 Middle 8 T4-2 2.0 100 80 Middle 2.3. Testing setup A Matest servo-hydraulic testing machine was used to apply uniaxial compressive loading on the specimens. The machine is equipped with a high-precision load cell for real-time force measurements. The applied compression force was controlled and monitored using a Servo Plus Progress controller (see Fig. 2). Specimens were mounted on the compression machine's testing platform. Proper alignment was ensured to minimize eccentric loading and maximize the accuracy of the results. The loading rate was set to 1.0 kN/sec, ensuring a consistent load application throughout the test. The start load was configured to 1.0 kN to initialize the system and verify specimen stability before proceeding with the full test. The stop load was programmed to 50% of the ultimate load capacity, allowing for controlled termination of the test based on predefined failure criteria.

Fig. 2. Test setup