PSI - Issue 77

Pawel Madejski et al. / Procedia Structural Integrity 77 (2026) 357–364 Author name / Structural Integrity Procedia 00 (2026) 000–000 5 Some variables need to be computed prior to porosity analysis using PorePolymer3D tool. is the complete volume of the dogbone shape by taking into account the dimensions in accordance with ISO 527-2-A. Using a mathematical formula, the calculated is 10200 mm 3 . The weighted sample mass is 11580 mg. 3. Results and discussion 3.1. Lines Pattern Author name / Structural Integrity Procedia 00 (2026) 000–000 5 Some variables need to be computed prior to porosity analysis using PorePolymer3D tool. is the complete volume of the dogbone shape by taking into account the dimensions in accordance with ISO 527-2-A. Using a mathematical formula, the calculated is 10200 mm 3 . The weighted sample mass is 11580 mg. 3. Results and discussion 3.1. Lines Pattern 361

Figure 3. Originally processed CT image of Lines pattern (slice 8). Figure 3. Originally processed CT image of Lines pattern (slice 8).

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F igure 4. A) Segmented image of Lines pattern (slice 8) using Otsu method; and B) Overlay pore detection, green colour denotes pores. F igure 4. A) Segmented image of Lines pattern (slice 8) using Otsu method; and B) Overlay pore detection, green colour denotes pores.

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Figure 5. A) Segmented image of Lines pattern (slice 8) using Adaptive threshold method; and B) Overlay pore detection, green denotes pores. Figure 5. A) Segmented image of Lines pattern (slice 8) using Adaptive threshold method; and B) Overlay pore detection, green denotes pores.

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Figure 6. A) Segmented image of Lines pattern (slice 8) using Watershed method; and B) Overlay pore detection, green colour denotes pores. Figure 6. A) Segmented image of Lines pattern (slice 8) using Watershed method; and B) Overlay pore detection, green colour denotes pores.

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Figure 7. A) Segmented image of Lines pattern (slice 8) using Region-growing method; and B) Overlay pore detection, green colour denotes pores. Figure 7. A) Segmented image of Lines pattern (slice 8) using Region-growing method; and B) Overlay pore detection, green colour denotes pores.

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Figure 8. A) Percentage porosity across 15 sliced images; and B) Porosity distribution of Lines pattern.

Figure 8. A) Percentage porosity across 15 sliced images; and B) Porosity distribution of Lines pattern.