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US 7,409,848 B2Granted
Apparatus and method for bulge testing an article
AssigneeROLLS-ROYCE plc
InventorsNikica Petrinic, Carlos Ruiz
Life of this patent
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AssigneeROLLS-ROYCE plc
InventorsNikica Petrinic, Carlos Ruiz
Estimating the term…
An apparatus (10) for bulge testing an article (12) comprises a pressure vessel (14) arranged to define a chamber (15), the pressure vessel (14) has a first aperture (28) and a second aperture (30), means to pressurize the chamber (15), means (19) to measure the deflection of the article (12, means (39) to measure the pressure in the pressure vessel (14) and means (18) to determine material properties of the article (12) using the measurements of pressure in the pressure vessel (12) and the measurements of deflection of the article (12). A piston (24) is arranged to move within the pressure vessel (14) and the chamber (15) is filled with a fluid. The means to pressurise the pressure vessel (14) comprises a gun (16) arranged to fire a projectile (36) to strike the piston (24) to produce a high pressure in the fluid in the chamber (15) in the pressure vessel (14) to deform an article (12) placed over the first aperture (28) in the pressure vessel (14) to seal the pressure vessel (14). The means (19) to measure deflection comprises a camera 48 and two mirrors (50,52) to produce a stereoscopic view of the article (10).
An apparatus for bulge testing an article comprising a pressure vessel arranged to define a chamber, the pressure vessel having a first aperture and a second aperture, means to pressurise the chamber, means to measure the deflection of the article, means to measure the pressure in the pressure vessel and means to determine material properties of the article using the measurements of pressure in the pressure vessel and the measurements of deflection of the article, a piston being arranged to move within the pressure vessel, the chamber being filled with a fluid, the means to pressurise the pressure vessel comprising a gun arranged to fire a projectile to strike the piston to produce a high pressure in the fluid in the chamber in the pressure vessel to deform the article, whereby in use the article being arranged over the first aperture in the pressure vessel to seal the pressure vessel wherein the means to measure the deflection of the article comprises at least one high-speed high-resolution camera and two mirrors arranged at different angles relative to the surface of the article in order to produce a stereoscopic view of the article, each mirror being arranged to focus on a respective portion of the image plane of the camera.
A method of bulge testing an article comprising providing a pressure vessel arranged to define a chamber, the pressure vessel having a first aperture and a second aperture, a piston being arranged to move within the pressure vessel, the chamber being filled with a fluid, arranging the article over the first aperture in the pressure vessel to seal the pressure vessel, firing a projectile from a gun to strike the piston to produce a high pressure in the fluid in the chamber in the pressure vessel to deform the article, measuring the deflection of the article, measuring the pressure in the pressure vessel and determining material properties of the article using the measurements of pressure in the pressure vessel and the measurements of deflection of the article.
An apparatus for bulge testing an article comprising a pressure vessel arranged to define a chamber, the pressure vessel having a first aperture, means to pressurise the chamber, means to measure the deflection of the article, means to measure the pressure in the pressure vessel and means to determine material properties of the article using the measurements of pressure in the pressure vessel and the measurements of deflection of the article, wherein the means to measure the deflection of the article comprising two mirrors arranged at different angles relative to the surface of the article to produce a stereoscopic view of the article, each mirror being arranged to focus on a respective portion of the image plane of a camera.
A method of bulge testing an article comprising providing a pressure vessel arranged to define a chamber, the pressure vessel having a first aperture, arranging the article over the first aperture in the pressure vessel to seal the pressure vessel, pressurising the chamber in the pressure vessel to deform the article, measuring the deflection of the article, measuring the pressure in the pressure vessel and determining material properties of the article using the measurements of pressure in the pressure vessel and the measurements of deflection of the article, wherein the measuring of the deflection of the article comprising providing two mirrors arranged at different angles relative to the surface of the article to produce a stereoscopic view of the article and arranging each mirror to focus on a respective portion of the image plane of a camera.
An apparatus for bulge testing an article comprising a pressure vessel arranged to define a chamber, the pressure vessel having a first aperture and a second aperture, means to pressurise the chamber, means to measure the deflection of the article, means to measure the pressure in the pressure vessel and means to determine material properties of the article using the measurements of pressure in the pressure vessel and the measurements of deflection of the article, a piston being arranged to move within the pressure vessel, the chamber being filled with a fluid, the means to pressurise the pressure vessel comprising a gun arranged to fire a projectile to strike the piston to produce a high pressure in the fluid in the chamber in the pressure vessel to deform the article, positioning means for holding the article being arranged over the first aperture in the pressure vessel to seal the pressure vessel.
Dependencies are inferred from the claim text.