Measuring and testing – Testing by impact or shock – Specimen directly subjected to a fluid pressure pulse or wave
Reexamination Certificate
2007-03-19
2008-08-12
Lefkowitz, Edward (Department: 2855)
Measuring and testing
Testing by impact or shock
Specimen directly subjected to a fluid pressure pulse or wave
C073S012110, C073S15000R
Reexamination Certificate
active
07409848
ABSTRACT:
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 camera48and two mirrors (50,52) to produce a stereoscopic view of the article (10).
REFERENCES:
patent: 2696105 (1954-12-01), Mackas
patent: 3074170 (1963-01-01), Zabel et al.
patent: 3109057 (1963-10-01), Campanella et al.
patent: 3277693 (1966-10-01), D Amato et al.
patent: 3729980 (1973-05-01), Johnson et al.
patent: 4234241 (1980-11-01), Schmidt
patent: 4483190 (1984-11-01), Cornett
patent: 4735092 (1988-04-01), Kenny
patent: 4905502 (1990-03-01), Gram
patent: 5311856 (1994-05-01), White et al.
patent: 6050138 (2000-04-01), Lynch et al.
patent: 6539790 (2003-04-01), Huston et al.
patent: 6603876 (2003-08-01), Matsuo et al.
patent: 2004/0261494 (2004-12-01), Lee
patent: 2005/0094853 (2005-05-01), Kang
patent: 1453 231 (1989-01-01), None
Alaca B E, Selby J C, Saif M T A, Sehitoglu H. 2002. Biaxial testing of nanoscale films on compliant substrates: Fatigue and fracture. Review of Scientific Instruments 73 pp. 2963-2965. Accessed online on Sep. 18, 2006. http://home.ku.edu.tr/˜ealaca/pdf/Publications/RSI—Aug02.pdf.
Bourne N K. 2003. A 50mm bore gas gun for dynamic loading of materials and structures. Meas. Sci. Technol. 14 273-8. Accessed online on Sep. 18, 2006. http://ej.iop.org/links/rt5c23MIE/1A5sGxxH2xGhIBvPav5vpA/e30304.pd.
Petrinic Nikica
Ruiz Carlos
Lefkowitz Edward
Manelli Denison & Selter PLLC
Patel Punam
Rolls-Royce plc
Taltavull W. Warren
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