contributor author | Bhamu, Rajesh K. | |
contributor author | Shukla, Aakash | |
contributor author | Sharma, Satish C. | |
contributor author | Harsha, S. P. | |
date accessioned | 2022-02-05T21:50:27Z | |
date available | 2022-02-05T21:50:27Z | |
date copyright | 10/9/2020 12:00:00 AM | |
date issued | 2020 | |
identifier issn | 2572-3901 | |
identifier other | nde_4_2_021002.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4276442 | |
description abstract | In the present study, the dynamic behavior of the last stage low-pressure steam turbine blade with fir-tree root at different conditions of blade root flank faces and their interfaces with rotor groove have been analyzed. Modal analysis has been done using a finite element approach to evaluate natural frequencies and evaluation of Campbell diagram generated under these conditions. For this, both healthy and defective blade have been taken. Since the variable crack size of fir-tree root flank has been taken, the excitation pattern has been evaluated due to stiffness variation of the cracked blade. This analysis provides the basis of excitation pattern of cracked blades due to inherent character and critical stressed zone. The outcome of this study forms the guidelines and checks during the fitting of blades in rotor assembly and its checks during health audit, overhaul, overspeed balancing test, and frequency turning. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Dynamic Analysis of Low-Pressure Steam Turbine Last Stage Fir-Tree Root Blade | |
type | Journal Paper | |
journal volume | 4 | |
journal issue | 2 | |
journal title | Journal of Nondestructive Evaluation, Diagnostics and Prognostics of Engineering Systems | |
identifier doi | 10.1115/1.4048380 | |
journal fristpage | 021002-1 | |
journal lastpage | 021002-11 | |
page | 11 | |
tree | Journal of Nondestructive Evaluation, Diagnostics and Prognostics of Engineering Systems:;2020:;volume( 004 ):;issue: 002 | |
contenttype | Fulltext | |