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Eight cones were produced with a method called metal spinning. These cones contain one verticalPessure Test Results of the Toledo Metal Spinning Cones
weld seam, and one cirumferential (and angled) weld near the tip of the cone. These cones are also
slightly thicker than the SNL cone. Because of the manufacturing process, the appearance of these
cones are much more uniform than the SNL cone.
All values listed on these pages should be considered preliminary until listed in the final report.
Cone Designation Initial / Ultimate
Buckling Pressure (psi)
Measured Thickness(in) Notes: SNL 0.33 / 0.64 0.023 pressure values from video only T1 1.67 / 1.67 0.035 test time = 450 sec T2 1.40 / 1.70 0.035 test time = 7 sec T3 1.20 / 1.57 0.035 test time = 350 sec T4 1.2*/1.5* 0.035 *no electronic data; visual only; laser scans T5 1.37 / 1.57 0.035 test time = 3000 sec;
T6 1.55 / 1.62 0.035 test time = 1800 sec;
T7 1.55 / 1.70 0.035 test time = 3500 sec;
laser scans every inch
T8 1.44/ --- 0.035 test time = 2600 sec;
laser scans every inch;
test terminated after initial buckling