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Accomplishments - Weak (“Kissing”) Bond Detection

Thermography, coupled with Signal-to-Noise optimization schemes, can differentiate bond strengths

IR camera

Flash lamp

Black paint

Mask

Steel plate 1

Heat flow path

T-PRI-11F-H

T-GRE-100-01-15F-H

T-PWD-10-15F-H

T-GRE-100-02-15F-H

T-GRE-100-05-15F-H

(100%)

(70%)

(50%)

(30%)

(10%)

Thus far, weak bond assessment results have shown abilities of NDI to clearly identify bond strengths below the 50% threshold; actual quantification of bond strength is more difficult but promising results have been obtained.

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