88 S. Kramer et al. Fig. 12.4 Experimental data from interrupted tensile testing: (a) load vs. extensometer normalized displacement for notched specimens; (b) load vs. extensometer normalized displacement for Plate 4 of the laser-welded specimens; (c) load vs. extensometer normalized displacement for Plate 5 of the laser-welded specimens; and (d) load vs. extensometer normalized displacement for Plate 6 of the laser-welded specimens The average normalized 25.4-mm gage extensometer displacements to failure for laser-welded Plates 4–6 (only one failure specimen for Plate 6) were 0.052, 0.044, and 0.046 mm/mm, respectively. The material above the notched specimens was on average 0.747 mm deep, in between the weld depths of Plates 5 and 6. The normalized 25.4-mm gage extensometer displacement to failure of the notched specimen was 0.058 mm/mm. Dividing the normalized 25.4-mm gage extensometer displacement of each interrupted test specimen by the normalized 25.4-mm gage extensometer displacement to failure of the parent plate allows us to compare the relative percent displacement to failure of each specimen. The six notched specimen tension tests, whose load versus normalized extensometer displacement plots are shown in Fig. 12.4a, had different load goals and corresponding percent displacements to failure: 98% of the estimated peak load before
RkJQdWJsaXNoZXIy MTMzNzEzMQ==