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SCHEMATIC OF UNTESTED <br />SPECIMEN <br />WELD B WELD A <br />TOP SHEET <br />BOTTOM SHEET <br />DIRECTION OF INITIAL PEEL <br />LOCUS-OF <br />TYPES OF BREAKS BREAK CODE <br />BREAK <br />DESCRIPTION CLASSIFICATION" <br />AD ADHESION FAILURE NON-FTB <br />BREAK IN SHEETING. BREAK CAN BE IN .B <br />BRK EITHER TOP OR BOTTOM SHEET. <br />BREAK IN OUTER EDGE OF SEAM. BREAK <br />SEl C N BE IN EITHER TOP OR BOTTOM <br />SHEET. <br />SE2 <br />AD-BRK <br />a. FTB = FILM TEAR BOND <br />BREAK AT INNER EDGE OF SEAM THROUGH <br />BOTH SHEETS. FTB <br />BREAK IN FIRST SEAM AFTER SOME <br />ADHESION FAILURE. BREAK CAN BE IN <br />EITHER THE TOP OR BOTTOM SHEET. <br />FTB <br />NOT TO SCALE