.... Dynamic tests were conducted over a range of frequencies (20 to 320 Hz) to obtain complex dynamic stiffness coefficients as functions of excitation frequency. For most test conditions, the real dynamic stiffness functions were well fitted with a quadratic function with respect to frequency. This curve fit...

.... , 2009 , “ Fracture Mechanics Characterisation of the WWER-440 Reactor Pressure Vessel Core Welding Seam ,” Int. J. Pressure Vessels Piping 0308-0161 , 86 , pp. 239 – 245 . 10.1016/j.ijpvp.2008.11.001 03 08 2009 20 08 2009 09 12 2010 09 12 2010 annealing dynamic...

... in rotordynamic tests without the dampers, are absent with the metal mesh dampers installed. 23 03 2009 27 03 2009 03 12 2009 03 12 2009 creep damping dynamic testing elasticity foils machine bearings micromechanical devices rings (structures) shafts turbomachinery...

... with the following specifications: Five pads, 0.282 preload, 60% offset, 57.87 deg pad arc angle, 101.587 mm ( 3.9995 in. ) rotor diameter, 0.1575 mm ( 0.0062 in. ) diametral clearance, and 60.325 mm ( 2.375 in. ) pad length. Dynamic tests were performed over a range of frequencies to investigate frequency effects...

... 13 June 2004 18 09 2006 heat exchangers aerospace engines matrix algebra heat transfer stress analysis thermal analysis finite element analysis creep dynamic testing cooling aerospace computing The thermal analysis task has concentrated first on the development...

... to static loads. Presently, the test FB is mounted on a non-rotating stiff shaft and a shaker exerts single frequency loads on the bearing. The dynamic tests are conducted at shaft surface temperatures from 25 to 75 ° C . Time and frequency domain methods are implemented to determine the FB parameters from...

..., New Orleans, LA, June 4–7, 2001; Paper 01-GT-238. Manuscript received by IGTI, December 2000, final revision, March 2001. Associate Editor: R. Natole. 04 June 2001 01 December 2000 01 March 2001 24 09 2002 seals (stoppers) test facilities dynamic testing steam...