Vibration-Based Crack Diagnosis in Rotating Shafts During Acceleration Through Resonance

Jerzy T. Sawicki; Xi Wu; George Y. Baaklini; Andrew L. Gyekenyesi

doi:10.1117/12.484297

Vibration-Based Crack Diagnosis in Rotating Shafts During Acceleration Through Resonance

Jerzy T. Sawicki, Xi Wu, George Y. Baaklini, Andrew L. Gyekenyesi

Cleveland State University

Research output: Contribution to conference › Presentation

Abstract

The dynamic response of a cracked Jeffcott rotor passing through the critical speed with constant acceleration is investigated analytically and numerically. The nonlinear equations of motion are derived and include a simple hinge model for small cracks and Mayes' modified funciton for deep cracks. The equations of motion are integrated in the rotating coordinate system. The angle between the crack centerline and the shaft vibaiton (whirl) vector is used to determine the clsoing and opening of the crack, allowing one to study the dynamic response with and without the rotor weight dominance. Vibration phase response is used as one of possible tools for detection the existence of cracks. The results of parametric studies of the effect of crack depth, unbalance eccentricity orientation with respect to crack, and the rotor acceleration on the rotor's response are presented.

Original language	American English
DOIs	https://doi.org/10.1117/12.484297
State	Published - Jan 1 2003
Event	Proceedings of the 10th Annual International Symposium on Smart Structures and Materials, San Diego - Duration: Jan 1 2003 → …

Conference

Conference	Proceedings of the 10th Annual International Symposium on Smart Structures and Materials, San Diego
Period	1/1/03 → …

Disciplines

Mechanical Engineering

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Vibration-Based Crack Diagnosis in Rotating Shafts During AccelerFinal published version, 654 KBLicense: CC BY

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title = "Vibration-Based Crack Diagnosis in Rotating Shafts During Acceleration Through Resonance",

abstract = " The dynamic response of a cracked Jeffcott rotor passing through the critical speed with constant acceleration is investigated analytically and numerically. The nonlinear equations of motion are derived and include a simple hinge model for small cracks and Mayes' modified funciton for deep cracks. The equations of motion are integrated in the rotating coordinate system. The angle between the crack centerline and the shaft vibaiton (whirl) vector is used to determine the clsoing and opening of the crack, allowing one to study the dynamic response with and without the rotor weight dominance. Vibration phase response is used as one of possible tools for detection the existence of cracks. The results of parametric studies of the effect of crack depth, unbalance eccentricity orientation with respect to crack, and the rotor acceleration on the rotor's response are presented.",

author = "Sawicki, \{Jerzy T.\} and Xi Wu and Baaklini, \{George Y.\} and Gyekenyesi, \{Andrew L.\}",

year = "2003",

month = jan,

day = "1",

doi = "10.1117/12.484297",

language = "American English",

note = "Proceedings of the 10th Annual International Symposium on Smart Structures and Materials, San Diego ; Conference date: 01-01-2003",

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TY - CONF

T1 - Vibration-Based Crack Diagnosis in Rotating Shafts During Acceleration Through Resonance

AU - Sawicki, Jerzy T.

AU - Wu, Xi

AU - Baaklini, George Y.

AU - Gyekenyesi, Andrew L.

PY - 2003/1/1

Y1 - 2003/1/1

N2 - The dynamic response of a cracked Jeffcott rotor passing through the critical speed with constant acceleration is investigated analytically and numerically. The nonlinear equations of motion are derived and include a simple hinge model for small cracks and Mayes' modified funciton for deep cracks. The equations of motion are integrated in the rotating coordinate system. The angle between the crack centerline and the shaft vibaiton (whirl) vector is used to determine the clsoing and opening of the crack, allowing one to study the dynamic response with and without the rotor weight dominance. Vibration phase response is used as one of possible tools for detection the existence of cracks. The results of parametric studies of the effect of crack depth, unbalance eccentricity orientation with respect to crack, and the rotor acceleration on the rotor's response are presented.

AB - The dynamic response of a cracked Jeffcott rotor passing through the critical speed with constant acceleration is investigated analytically and numerically. The nonlinear equations of motion are derived and include a simple hinge model for small cracks and Mayes' modified funciton for deep cracks. The equations of motion are integrated in the rotating coordinate system. The angle between the crack centerline and the shaft vibaiton (whirl) vector is used to determine the clsoing and opening of the crack, allowing one to study the dynamic response with and without the rotor weight dominance. Vibration phase response is used as one of possible tools for detection the existence of cracks. The results of parametric studies of the effect of crack depth, unbalance eccentricity orientation with respect to crack, and the rotor acceleration on the rotor's response are presented.

UR - https://digitalcommons.calpoly.edu/meng_fac/66

U2 - 10.1117/12.484297

DO - 10.1117/12.484297

M3 - Presentation

T2 - Proceedings of the 10th Annual International Symposium on Smart Structures and Materials, San Diego

Y2 - 1 January 2003

ER -

Vibration-Based Crack Diagnosis in Rotating Shafts During Acceleration Through Resonance

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