Hydrostatic testing of crushable foams
AssigneeChrysler Corporation
InventorsSukhbir S. Bilkhu, Dale A. Bode, Lawrence Zukowski
Life of this patent
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Abstract
A system for hydrostatically measuring the volumetric deformation of a crushable foam includes a test chamber that is in fluid communication with a pressure fluid reservoir. A sample of a crushable foam is loaded within the test chamber within a latex pouch and the pressure fluid is pumped into the test chamber in order to subject the foam sample to triaxial loading. The volumetric deformation of the crushable foam is continuously monitored through suitable electronics as a function of pressure within the system.
Claims15
A device for measuring the volumetric deformability of a crushable material, comprising:
- a reservoir for containing a pressure fluid;
- a test chamber having an interior chamber that defines a fixed chamber volume in fluid communication with said reservoir;
- a latex pouch holder deformable in three orthogonal axes for holding a piece of crushable material within said interior chamber and for preventing the piece of material from contacting said pressure fluid;
- means for transferring preselected amounts of pressure fluid from said reservoir to said interior chamber, said pressure fluid altering a fluid pressure within said interior chamber, said fluid pressure acting through said pouch holder for subjecting said piece of crushable material to loading in said three orthogonal axes to thereby cause a volumetric deformation in the piece of crushable material;
- and
- means for determining the volumetric deformation of the piece of crushable material as a function of the fluid pressure within said interior chamber.
A device for determining the volumetric deformation of a piece of crushable material as a function of pressure, comprising:
- a first chamber for containing a fluid;
- a second chamber having fixed interior dimensions, and being in fluid communication with said first chamber;
- a latex pouch holder deformable in three orthogonal axes for holding the piece of crushable material within said second chamber;
- a source of pressure for transferring preselected amounts of fluid from said first chamber to said second chamber, said fluid altering a fluid pressure within said second chamber, said fluid pressure acting through said pouch holder for subjecting said piece of crushable material to loading in said three orthogonal axes to thereby cause a volumetric deformation in the piece of crushable material;
- and means for determining the volumetric deformation of the piece of crushable material as a function of the fluid pressure within said second chamber.
Dependencies are inferred from the claim text.