ACCURATE CHARACTERIZATION OF CRACKS IN BEAM-LIKE STRUCTURES USING SQUARE CURVATURE MODE SHAPE: WITHOUT BASE LINE DATA
Journal Title: Journal of Mechanical Engineering Research & Developments (JMERD) - Year 2019, Vol 42, Issue 2
Abstract
In this paper, a new modal parameters-based damage detection method has been proposed. This method is based on accurately composition of undamaged mode profiles from the damaged mode profiles of beam structure. For that, curve fitting (CF) analysis was used to extract the undamaged mode profiles from damaged ones. Curvature mode shape method is presented to demonstrate proposed approach without use of base line data as a reference. To illustration of this method, numerical and experimental modal analysis is performed on two aluminum cantilever beams containing single and double cracks to examine the location and quantification of different damage scenarios. First five modal frequencies and mode profiles are employed to assess the effectiveness of the proposed method. Moreover, to validate the accuracy of the proposed approach in damage identification, established results have been balanced with another experimental based results. From the results, it can be seen that damage scenarios of the two beams are quite different the chosen method is precisely identifying the location and quantification of the damage in beam structures. It is concluded that composed mode profiles by the proposed approach can be conveniently used as reference data for the damage identification purpose. Further, an influence of mode order on damage identification also investigated in the present analysis.
Authors and Affiliations
L Ramesh, Putti Srinivasa Rao
Keywords
Related Articles
- EP ID EP503667
- DOI 10.26480/jmerd.02.2019.58.66
- Views 105
- Downloads 0
ENERGY, ECONOMIC AND ENVIRONMENTAL IMPACT OF WASTE-TO-ENERGY IN MALAYSIA
National human population, economy development and advancement of technologies have led to a high demand of energy. Despite this, depletion of conventional fuels and global warming crisis are hindering the government to...
CFD SIMULATION OF SAWDUST GASIFICATION ON OPEN TOP THROATLESS DOWNDRAFT GASIFIER
Sawdust is one of alternative energy sources to substitute the fossil fuels. The utilization of sawdust to produce energy can be done through different types of technologies. Gasification is one of techonology that can b...
GEOMETRIC VISUALIZATION OF THE PROBLEM OF MEDICAL DIAGNOSTICS BIOMETRIC DATA OF THE BIOSENSOR PLATFORM
The aim of the work is to study the algorithmic solutions of non-invasive medical remote monitoring of human health based on the wearable biosensor platform in the mode of everyday wear. The relevance of the topic is due...
EXPLORATORY INVESTIGATION OF VIBRATIONAL CHARACTERISTICS OF THE UN- DAMPED AND DAMPED SPRING MASS SYSTEMS
The essential goal of this investigation was to break down the free oscillatory motion of dynamic systems and the powers related with the motion. This is the investigation of a free vibration of two states of a spring ma...
A NUMERICAL STUDY OF THE TURBULENCE MODEL INFLUENCE ON A SAVONIUS WIND TURBINE PERFORMANCE BY MEANS OF MOVING MESH
This numerical research has investigated the influence of the turbulence model on a Savonius wind turbine performance. The numerical simulation has been applied by using two-dimensional analysis of Computational Fluid Dy...