Gloria, Ruben M. (1957) The failure of pressurized thin-walled cylinders. Engineer's thesis, California Institute of Technology. http://resolver.caltech.edu/CaltechETD:etd-06292004-150847
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The object of this research was to find significant parameters in the failure of thinwalled internally pressurized cylinders. The following tests were made: (a) original crack length variation; (b) crack angle variation; (c) variation of velocity of penetration and (d) shape of a penetrating object; (e) cycling of internal pressure; and (f) change of loading media. The corresponding results were as follows: 2 (a) the crack length parameter [...] was found to bear importantly on the failing pressure of prepunctured cylinders; (b) an increase in failing pressure was achieved by changing the crack angle, originally parallel to the cylinder axis, to a perpendicular position; (c) explosive pressure level increased with decreased projectile velocity; (d) nondimensional explosive level increased with increased projectile sharpness, cylinder thickness and diameter; (e) pressure cycling tests revealed relatively fast crack growth during the first part of the life, followed by stabilization, and suceeded by another fast growth and failure; (f) a change from air to water as loading media made no effect on the static failing pressure of prepunctured cylinders.
The following tests are recommended: (a) determination of a parameter more generalized than [...] involving cylinder length; (b) more crack angle tests to obtain a family of [...] curves for various crack lengths from which effective crack lengths may be obtained; (c) explosive level runs using higher velocity and true conical projectiles; (d) pressure cycling tests to find the effect of cycling stress level on crack propagation; and (e) crack propagation by vibration, using different loading media.
|Item Type:||Thesis (Engineer's thesis)|
|Degree Grantor:||California Institute of Technology|
|Division:||Engineering and Applied Science|
|Thesis Availability:||Public (worldwide access)|
|Defense Date:||1 January 1957|
|Default Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Imported from ETD-db|
|Deposited On:||30 Jun 2004|
|Last Modified:||26 Dec 2012 02:54|
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