Vibrodiagnostic parameters of fatigue damage in rectangular plates. Part 3. Through-the-thickness and surface semi-elliptical cracks |
| |
Authors: | V V Matveev O E Boginich |
| |
Affiliation: | (1) Pisarenko Institute of Problems of Strength, National Academy of Sciences of Ukraine, Kiev, Ukraine |
| |
Abstract: | The paper addresses the analytical determination of vibrodiagnostic parameters that describe the presence of normal-rupture
flat through-the-thickness and surface semi-elliptical central cracks in a rectangular homogeneous plate of constant thickness
for various plate fixing conditions and vibration modes. It is shown that the most sensitive vibrodiagnostic damage parameter
of a plate is the variation of the logarithmic decrement in the case of a through-the thickness crack and the second-harmonic
ratio of the vibration process in superharmonic resonance in the case of a surface crack.
__________
Translated from Problemy Prochnosti, No. 5, pp. 27–47, September–October, 2006. |
| |
Keywords: | rectangular plate fatigue damage normal-rupture crack vibrodiagnostic damage parameters natural frequency vibration decrement superharmonic resonance |
本文献已被 SpringerLink 等数据库收录! |