✦ LIBER ✦

THE EFFECT OF BLADE CRACK ON MODE LOCALIZATION IN ROTATING BLADED DISKS

✍ Scribed by J.H. KUANG; B.W. HUANG

Publisher: Elsevier Science
Year: 1999
Tongue: English
Weight: 206 KB
Volume: 227
Category: Article
ISSN: 0022-460X
DOI: 10.1006/jsvi.1999.2329

No coin nor oath required. For personal study only.

✦ Synopsis

The e!ects of blade crack on mode localization in rotating bladed disks are investigated in this study. A disk consisting of periodic shrouded blades is used to simulate the bladed disk of a turbo-rotor. Blades on the disk are approximated as Euler}Bernoulli beams. A crack in the blade is regarded as a local disorder of the system. This local disorder might introduce the so-called mode localization phenomenon in this mistuned system. The Galerkin method is employed to derive the equation of motion of the mistuned system, with the blade crack. The e!ects of position, depth of crack and rotating speed on the localization phenomenon in the rotating blade-disk system are studied. Numerical results indicate that the blade crack may be one of the reasons for the occurrence of the localization phenomenon in the rotating bladed disk.

📜 SIMILAR VOLUMES

EFFECT OF PARTIAL DEPTH CRACKS ON THE NA

EFFECT OF PARTIAL DEPTH CRACKS ON THE NATURAL FREQUENCY OF TWISTED BLADES: A 3-D FINITE ELEMENT ANALYSIS

✍ S. Neogy; V. Ramamurti 📂 Article 📅 1997 🏛 Elsevier Science 🌐 English ⚖ 253 KB

It is possible that fatigue cracks may appear in turbomachine blades which are subjected to extreme conditions during operation. Such cracks may become the cause of failure. The feasibility of considering the natural frequency as a parameter for detecting full depth cracks has been considered earlie

Effect of Impeller Blade Height on the D

Effect of Impeller Blade Height on the Drop Size Distribution in Agitated Dispersions

✍ H. Naseef; A. Soultan; M. Stamatoudis 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 135 KB 👁 2 views

Evaluation of motion correction effect a

Evaluation of motion correction effect and image quality with the periodically rotated overlapping parallel lines with enhanced reconstruction (PROPELLER) (BLADE) and parallel imaging acquisition technique in the upper abdomen

✍ Yuusuke Hirokawa; Hiroyoshi Isoda; Yoji S. Maetani; Shigeki Arizono; Kotaro Shim 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 390 KB 👁 1 views

## Abstract ## Purpose To evaluate motion correction effect and image quality in the upper abdomen with the periodically rotated overlapping parallel lines with enhanced reconstruction (PROPELLER) (BLADE) and parallel imaging acquisition technique. ## Materials and Methods A total of 50 consecut