Show simple item record

contributor authorLiu, Chao
contributor authorJiang, Dongxiang
date accessioned2017-11-25T07:15:52Z
date available2017-11-25T07:15:52Z
date copyright2017/24/1
date issued2017
identifier issn0742-4795
identifier othergtp_139_06_062502.pdf
identifier urihttp://138.201.223.254:8080/yetl1/handle/yetl/4233714
description abstractRoot causes of several recent crack failures in turbine units are attributed to oscillation and interaction between generator of turbine unit and devices on the grid, where torsional vibration of the rotor bearing system is observed and identified as an important cause. Exploring vibrational (lateral, torsional, and axial) features in the cracked rotor system with torsional excitation (TE) present can provide a novel view in crack detection and isolation. This work presents dynamic analysis of a cracked rotor system in a steam turbine unit (a typical rotor system with multiple rotors, multiple supports, and oscillating loads), and the vibrational features of the cracked rotor system with comparisons to typical features in monitored vibration data. The results show that coupled vibration in both lateral and torsional components is an effective indicator for cracks in the presence of torsional excitation. Also, vibration characteristics evaluated in different locations of the rotor system are beneficial for fault detection and isolation.
publisherThe American Society of Mechanical Engineers (ASME)
titleDynamics of Slant Cracked Rotor for a Steam Turbine Generator System
typeJournal Paper
journal volume139
journal issue6
journal titleJournal of Engineering for Gas Turbines and Power
identifier doi10.1115/1.4035323
journal fristpage62502
journal lastpage062502-7
treeJournal of Engineering for Gas Turbines and Power:;2017:;volume( 139 ):;issue: 006
contenttypeFulltext


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record