| 摘要 |
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 ).
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