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| Locus-of-Break codes for Fillet Extrusion Weld Seams Tested for Seam Strength in Shear and Peel Modes.
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| Type of Break | Code | Break Description | ||
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AD-1 | Failure in adhesion. Specimens
may also delaminate under the bead and break through the thin extruded material in the outer area. |
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AD-2 | Failure in adhesion. | ||
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AD-WLD | Break through the fillet. | ||
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SE-1 | Break at seam edge in the bottom sheet. (Applicable to shear tests only.) | ||
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SE-2 | Break at seam edge in the top
sheet. (Applicable to shear tests only.) |
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SE-3 | Break at seam edge in the bottom
sheet. (Applicable to peel tests only.) |
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BRK-1 | Break in the bottom sheeting.
A "B" in parenthe- sis after the code means the speci- men broke in the buffed area. |
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BRK-2 | Break in the top sheeting. A
"B" in parenthe- sis after the code means the speci- men broke in the buffed area. |
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AD-BRK | Break in the bottom sheeting
after some adhe- sion failure between the fillet and the bottom sheet. |
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HT | Break at the edge of the hot
tack for specimens which could not be de- laminated in the hot tack. |
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SIP | Separation in the plane of the sheet. | ||
| (1) Acceptance of AD-Weld breaks depends on whether test values meet a minimum specification value. | ||||
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