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Series: ASM Technical Books
Publisher: ASM International
Published: 31 March 2024
DOI: 10.31399/asm.tb.gvar.t59360083
EISBN: 978-1-62708-435-2
... Abstract This chapter details the vibration limits for gearboxes. It focuses on critical speed and peak load. The chapter presents vibration measurement and analysis, which provides a quick and relatively inexpensive way to detect and identify mechanical problems before they become more serious...
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Published: 31 March 2024
Fig. 8.1 Epicyclic gearboxes with star arrangements More
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Published: 31 March 2024
Fig. 8.3 Star gearboxes with Stoeckicht and alternate designs More
Series: ASM Technical Books
Publisher: ASM International
Published: 31 March 2024
DOI: 10.31399/asm.tb.gvar.t59360001
EISBN: 978-1-62708-435-2
... Abstract 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, and material properties. This chapter details sources and types of gearbox vibrations...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 March 2024
DOI: 10.31399/asm.tb.gvar.t59360051
EISBN: 978-1-62708-435-2
... Abstract The cyclic nature of gearbox vibration lends itself well to the analysis in the frequency domain where the effects of a gear mesh, bearing defects, and other sources of vibration are effectively set apart, making it much easier to identify and correct the underlying causes of vibration...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 March 2024
DOI: 10.31399/asm.tb.gvar.t59360107
EISBN: 978-1-62708-435-2
... Abstract This chapter analyzes four gearbox failures, in each case identifying the underlying failure mechanism and recommending changes to reduce vibration. These include failure of an offset parallel gearbox due to gear tooth geometry error; high vibration on high-speed offset parallel...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 March 2024
DOI: 10.31399/asm.tb.gvar.9781627084352
EISBN: 978-1-62708-435-2
Series: ASM Technical Books
Publisher: ASM International
Published: 31 March 2024
DOI: 10.31399/asm.tb.gvar.t59360127
EISBN: 978-1-62708-435-2
... Abstract Gearbox vibrations can often be dealt with in the field by modifying, replacing, and repositioning components and adjusting operating conditions and control parameters. Every gearbox design, however, eventually reaches a point where problems due to vibration are not so easily addressed...
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...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 March 2024
DOI: 10.31399/asm.tb.gvar.t59360121
EISBN: 978-1-62708-435-2
... Abstract This chapter presents guidelines for reducing gearbox vibration, with an emphasis on design factors that play major roles in influencing vibration. gearbox design gearboxes vibration reduction A GREAT DEAL OF DISCUSSION has been presented in previous chapters on the design...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 31 March 2024
DOI: 10.31399/asm.tb.gvar.t59360043
EISBN: 978-1-62708-435-2
... along with their important characteristics and common applications. The chapter provides general guidelines for the selection of a measuring device, and discusses vibration severity levels. gearboxes transducers vibration analysis vibration nomograph Amplitudes of Vibration Vibration...
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Published: 31 March 2024
Fig. 1.5 Offset parallel gearbox with (a) single and (b) double helical gears. (c) Epicyclic gearbox More
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Published: 31 March 2024
Fig. 1.6 Damping capacity of different gearbox materials More
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Published: 31 March 2024
Fig. 1.7 The transfer function of a gearbox can be measured with an instrumented hammer and a two-channel dynamic signal analyzer. More
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Published: 31 March 2024
Fig. 1.37 Gearbox shaft dimensions and mass elastic data More
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Published: 31 March 2024
Fig. 2.5 Schematic of gearbox vibration measurement More
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Published: 31 March 2024
Fig. 3.1 Gearbox vibration viewed in the time and frequency domains More
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Published: 31 March 2024
Fig. 3.6 Vibration spectrum of a star gearbox. RMS, root mean square More
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Published: 31 March 2024
Fig. 3.18 Vibration records at No. 1 turbine bearing with gearbox ring gear showing two-peaks index variation form More
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Published: 31 March 2024
Fig. 3.19 Vibration records at No. 1 turbine bearing with gearbox ring gear showing four-peaks index variation form More