.... 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...

... exemplifies the cutting scheme of the disk 1-4.1 from the base metal ring 0.3.1. Cutting scheme of disk 1-1.1 (weld metal) annealing dynamic testing fracture nuclear power stations steel welding Trepans were extracted from the decommissioned unit 1 RPV in 2005. Details...

... coefficients. 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 Oil-free microturbomachinery ( < 250   kW ) implements gas...

... 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...

... is very important for the overall gain in efficiency of the complete engine. heat exchangers aerospace engines matrix algebra heat transfer stress analysis thermal analysis finite element analysis creep dynamic testing cooling aerospace computing 01 October 2003 01 March...

... 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...

... 24 09 2002 seals (stoppers) test facilities dynamic testing steam turbines stability stators In addition to reducing leakage, honeycomb seals have been employed widely to eliminate instabilities in centrifugal compressors and steam turbines. Despite the favorable field...