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Table 2.
Test samples in relation to the applied NDT methods.
# | NDT technique | Identity | Nominal compound | Clad Al thickness (mm) | Steel thickness (mm) | Red (%) | Sheet dimension (mm) | Surface preparation | Peel back (mm) |
---|---|---|---|---|---|---|---|---|---|
1 | Active thermography | AT-R | AlSn20CuMn | 0.67 | 1.96 | 43 | 280 × 171 × 2.63 | Reference | No peel |
2 | Active thermography | AT-NL | AlSn20CuMn | 0.52 | 2.13 | 43 | 280 × 171 × 2.65 | No linishing | 13 |
3 | Active thermography | AT-RR | AlSn20CuMn | 0.63 | 2.00 | 30 | 280 × 171 × 2.63 | Rolling reduction 30% | 9 |
4 | Shearography | S-R | AlSn20CuMn | 0.53 | 1.22 | 43 | 280 × 171 × 1.75 | Reference sample | No peel |
5 | Shearography | S-SP | AlSn20CuMn | 0.53 | 1.22 | 43 | 280 × 171 × 1.75 | 80 g/m2 sheet paper | >5 |
6 | Ultrasonic testing | UT-R | AlSn20CuMn | 0.53 | 1.22 | 43 | 280 × 171 × 1.75 | Reference sample | No peel |
7 | Ultrasonic testing | UT-NB | AlSn20CuMn | 0.53 | 1.22 | 43 | 280 × 171 × 1.75 | No brushing | 2 |
8 | Guided wave EMAT | GW-R | AlSn20CuMn | 0.53 | 1.22 | 43 | 800 × 171 × 1.75 | Reference sample | No peel |
9 | Guided wave EMAT | GW-PT | AlSn20CuMn | 0.53 | 1.22 | 43 | 800 × 171 × 1.75 | 80 g/m2 paper triangle | >5 |
10 | Guided wave EMAT | GW-IT | AlSn20CuMn | 0.53 | 1.22 | 43 | 800 × 171 × 1.75 | Ink polluting agent | 1 |
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