PSI - Issue 51

Mohammed Algarni et al. / Procedia Structural Integrity 51 (2023) 185–191 M. Algarni/ Structural Integrity Procedia 00 (2022) 000–000

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resistance to fracture that causes higher tensile strength. Similarly, the strain at fracture slightly increases as the LYT increase (Fig. 5 right ). The average strain at fracture for all specimens with LYT of 0.1mm is 1.86%. Strain at fracture increases by 6% on average to become 1.96% for specimens with LYT equal 1.98%. Furthermore, specimens with LYT 0.3mm has the highest strain at fracture on an average of 2.07%. This might be explained by having higher LYT results in less distortion effect between the layers during the loading process. The analyses show that LYT has the least influence on the mechanical properties

Fig. 4. The effect of different RSAs vs. tensile strength ( left ) and different RSAs vs. strain at fracture ( right ).

Fig. 5. The effect of different LYTs vs. tensile strength ( left ) and different LYTs vs. strain at fracture ( right ).

4.3. Effect of IFD on the mechanical behavior Similarly, three IFDs were selected: 30%, 50%, and 80%. Specimens with 80% IFD had the maximum tensile strength, and as the IFD decreases, the specimens weakened. In Fig. 6 ( left ), the average tensile strength for specimens with IFD 30% is 447 N. This average tensile strength increases by 53% to 685 N on average for specimens with an IFD of 50%. The tensile strength average increases more by 73% to become 776 N on average for specimens with IFD 80%. This is due to specimens with higher IFD presenting higher resistance to forces applied on specimens, increasing tensile strength against fracture.

Fig. 6. The effect of different IFDs vs. tensile strength ( left ) and different IFDs vs. strain at fracture ( right ).