Novel Discrete Singular Convolution for High-Frequency Vibration Analysis of Structural Elements

AIAA Journal ◽  
2017 ◽  
Vol 55 (12) ◽  
pp. 4364-4375 ◽  
Author(s):  
Xinwei Wang
Keyword(s):  
High Frequency ◽  
Vibration Analysis ◽  
Structural Elements ◽  
High Frequency Vibration ◽  
Discrete Singular Convolution

Research on Fault Diagnosis of Ship Stern Bearing Based on Vibration Analysis

2010 ◽  
Vol 139-141 ◽  
pp. 2354-2358
Author(s):  
Yong Jin ◽  
Lin Liu Zheng
Keyword(s):  
Fault Diagnosis ◽  
High Frequency ◽  
Vibration Analysis ◽  
Vibration Characteristics ◽  
Vibration Source ◽  
High Frequency Vibration ◽  
Rotary Machine ◽  
Vibration Data ◽  
Analysis Platform ◽  
Diagnostic Mode

The application of vibration analysis in fault diagnosis of rotary machine becomes more and more popular. Aiming at an abnormal high frequency vibration of a stern bearing, this paper proposed a method of fault diagnosis based on the analysis of vibration characteristics and the spectral analysis. From the gathered vibration data of a stern shaft bench through Pulse Vibration Analysis Platform, using the speed spectrum array to determine the characteristics of vibration source, with the analysis of vibration characteristics of the bench, it concluded that the abnormal high frequency vibration source of the stern bearing is a weak rigidity part of bench─ tacho-torque meter. The vibration data of again test after strengthening the part illustrated the validity of this diagnostic mode.

High frequency vibration analysis in drilling of GFRP laminates using candlestick drills

2018 ◽  
Vol 184 ◽  
pp. 742-758 ◽  
Author(s):  
Liping Liu ◽  
Feng Wu ◽  
Chunliang Qi ◽  
Tianshu Liu ◽  
Jing Tian
Keyword(s):  
High Frequency ◽  
Vibration Analysis ◽  
High Frequency Vibration

Vibration monitoring and strength of structural elements taking into account the inertial properties of materials under broadband vibration

2020 ◽  
Author(s):  
О.B. Skvortsov
Keyword(s):  
High Frequency ◽  
Cyclic Strength ◽  
Vibration Monitoring ◽  
Structural Elements ◽  
High Frequency Vibration ◽  
Latent Defects ◽  
Current State ◽  
Properties Of Materials ◽  
High Frequency Vibrations ◽  
The Impact

The paper considers influence of the inertial properties of structural materials on mechanical stresses under high-frequency vibrations. The necessity of considering acceleration estimates when creating vibration monitoring systems focused on the incorporating cyclic strength is proved. The importance of the effects of high-frequency vibration in the local areas of the structural material is noted, taking into account the formation of latent defects and reducing the fatigue limit during gigacycle fatigue. Recommendations are given concerning supplement to the vibration monitoring system, taking into account the decrease in strength under high-frequency vibration when solving problems of diagnostics, forecasting and protection with new innovative solutions. It provides increased reliability of the diagnosis and protection of equipment. In addition to evaluating the current state of the unit based on the results of vibration intensity measuring, the proposed solutions allow additional assessing the degree of wear and taking into account the impact of fatigue processes in the operation of a multi-level automatic protection system of the equipment.

Sign in / Sign up

Export Citation Format

Share Document