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speed of rotation

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Series: ASM Technical Books
Publisher: ASM International
Published: 31 March 2024
DOI: 10.31399/asm.tb.gvar.t59360051
EISBN: 978-1-62708-435-2
.... With such a map, one can quickly identify which vibration components are related to rotational speed and which are not. Note that the rotationally-related vibration components are distributed laterally across the map in contrast to the perfectly vertical distribution of fixed-frequency components. This feature...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 March 2024
DOI: 10.31399/asm.tb.gvar.t59360127
EISBN: 978-1-62708-435-2
... of a tilt-pad sleeve bearing subjected to this type of vibration after 5000 h of service is shown in Fig. 8.6 . Fig. 8.6 Bearing wear pattern The low-frequency SSVs are due to an unbalance caused by dynamic eccentricity of the low-speed rotating components of the gearbox. In any epicyclic...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 March 2024
DOI: 10.31399/asm.tb.gvar.t59360091
EISBN: 978-1-62708-435-2
... Abstract Gearbox vibrations are classified as synchronous or nonsynchronous depending on whether or not they are related to the rotational speed of an internal or connected component. This chapter presents a turbogenerator case study that demonstrates the source of nonsynchronous vibration...
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Published: 01 December 2009
Fig. 10.4 CBU-87/B cluster bomb operational sequence. The aircraft releases the dispenser, which spins up in the airstream. At a preselected dispenser rotational speed, linear charges fire to open the dispenser. This releases submunitions into the airstream. Selecting aircraft altitude More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720321
EISBN: 978-1-62708-305-8
... feeding has already been adopted in practical use for as-rolled steel bars. It is difficult to obtain higher testing speed for cold drawn bars because of smaller dimensions. Therefore, a method has been developed in which the material is fed straight and the probes are simultaneously rotated at high speed...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400161
EISBN: 978-1-62708-316-4
... given angle position, and can change speed according to the number of pulses provided per second. Modern servo-motor designs can provide constant torque over a large range of rotational speeds (rotations per minute, rpm). In a mechanical servo press, the flywheel and the clutch are replaced with a servo...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 March 2024
DOI: 10.31399/asm.tb.gvar.t59360121
EISBN: 978-1-62708-435-2
... geometry. Errors in gear tooth geometry, quality and surface speed of gears, and type and quality of bearings are of importance in both low- and high-speed gearboxes. High-speed gears typically generate a complex vibration spectrum beginning with frequencies below the shaft rotational speeds, which...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 March 2024
DOI: 10.31399/asm.tb.gvar.t59360083
EISBN: 978-1-62708-435-2
... to 12—along with precise balancing of rotating components. Noise considerations are clearly not as important in industrial applications as in hospital and undersea environments. The primary concern with industrial gearboxes is service life under high load and speed. For an acceptable gear service...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 March 2024
DOI: 10.31399/asm.tb.gvar.t59360001
EISBN: 978-1-62708-435-2
... Introduction Vibration is a concern in rotating equipment of nearly any type, especially at higher speeds. In the case of gearboxes, vibration is the primary mode of failure even at the mid-range of operating speeds. Avoiding such failures requires an understanding of gearbox design, vibration theory...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 March 2024
DOI: 10.31399/asm.tb.gvar.9781627084352
EISBN: 978-1-62708-435-2
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Published: 01 December 2006
Fig. 6.67 Schematic diagram of the rotors in scavenging gas treatment systems. n , rotational speed (rpm) [ Ter 87 ] More
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Published: 01 August 1999
Fig. 4 Aluminum alloy 6061-T6 combustion chamber damaged by cavitation erosion. The chamber rotated in water at moderate speed. (a) Overall view of the chamber. (b) and (c) Micrographs of cross sections of the chamber wall showing typical cavitation damage. 100 and 500×, respectively More
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Published: 30 November 2013
Fig. 12 Destructive adhesive wear of a differential cross following fracture of one severely worn trunnion. This vehicle was operated primarily in forward speeds; consequently, only the forward-drive side was damaged severely by the rotation of differential pinions on the trunnions More
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Published: 01 November 2012
Fig. 13 Destructive adhesive wear of a differential cross following fracture of one severely worn trunnion. This vehicle was operated primarily in forward speeds; consequently, only the forward drive side was damaged severely by the rotation of differential pinions on the trunnions More
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Published: 01 December 2006
Fig. 3.80 Holton C400 H conform extrusion system. Friction wheel diam: 400 mm; power supply: 180–250 kW max, rotation speed 36 l/min; max section circumscribing circle: 85 mm without a feeder chamber, 130 mm with feeder chamber; max tube diam: 45 mm without a feeder chamber, 75 mm More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720345
EISBN: 978-1-62708-305-8
... testing instruments, specific problems arise when inspection of the ends is required. End effect is encountered with the eddy current, ultrasonic, and radiographic methods. Consequently, inspection of the entire tube and the ends may require two different procedures; as a result, production speed...
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Published: 01 March 2002
Fig. 9.20 Bellows joint of IN-718 nickel-base superalloy showing welding information Conditions for GTAW Joint type Edge Weld type Three-member edge flange Fixture Rotating positioner Power supply 300 A transformer-rectifier Electrode 0.040 in. (1.02 mm) diam EWTh More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040141
EISBN: 978-1-62708-300-3
... mandrels are mounted in a rotating table, and the main roll, eccentrically located within the table, is driven independently by a variable-speed drive. The blank placed over the mandrel, in position 1, is rolled out into a ring as the clearance between mandrel and main roll decreases. After having passed...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250089
EISBN: 978-1-62708-345-4
... (16, 18, 21, or 25 in.) in diameter that rotate in a horizontal plane at a uniform speed ( Fig. 14 ). The cutter blades, which extend radially outward from the cutter head, have concave edges that produce convex profiles on the gear teeth. During cutting, the workpiece is held motionless while...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2011
DOI: 10.31399/asm.tb.cfw.t52860007
EISBN: 978-1-62708-338-6
.... This was not conducive to high-speed production, but many parts of that era were aerospace or defense related, and high-volume production was not required. The exception to this was the oil and chemical industry, which needed many parts wound at a time to increase efficiency. Oil and Gas Industry Production...