VIBRATION-BASED DAMAGE DETECTION OF BEAM-LIKE STRUCTURES USING DISCRETE WAVELET TRANSFORM
Journal Title: Applied Engineering Letters - Year 2018, Vol 3, Issue 4
Abstract
In this paper, a new modal parameters-based damage detection method has been proposed for accurate characterization of single and multi-surface cracks in beam-like structure. The advantage of this method is 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 one. Discrete Wavelet transformation (DWT) method is presented to demonstrate effectiveness of the 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 other experimental based results, which were found in the literature. From the results, it can be seen that damage scenarios of the two beams are quite different the chosen methods precisely identify 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.
Authors and Affiliations
Lanka Ramesh, Putti Srinivasa Rao
Keywords
Related Articles
- EP ID EP435529
- DOI 10.18485/aeletters.2018.3.4.1
- Views 122
- Downloads 0
DETERMINATION OF CRITICAL SIZE OF CORROSION PIT ON MECHANICAL ELEMENTS IN HYDRO POWER PLANTS
Researchers in the field of fracture mechanics, predominantly developing appropriate solution algorithms for problems of solid bodies with cracks. Problems in mechanics generally, related with fracture and fatigue for so...
MECHANICAL, MICROSTRUCTURE AND WEAR BEHAVIOUR OF LM25/SiC/MICA METAL MATRIX COMPOSITE FABRICATED BY SQUEEZE CASTING TECHNIQUE
Metal matrix composite (MMC) has a unique class of light weight advanced engineered materials which are developed to give high strength, improved hardness, tensile strength, good elongation and good resistance to wear an...
A SIMPLE APPROACH FOR DESIGNING A FILTER ON MICROSTRIP LINES
This paper deals with the design and fabrication of edge-coupled band pass filter (BPF) circuit (fifth order) on microwave laminate for 4.5 GHz ± 0.5 GHz application. The design of filter is realized on a high quality RT...
AN INTEGRATED APPROACH FOR DESIGN AND MANUFACTURE OF PLASTIC PRODUCTS
The aim of this paper is to present an integrated design procedure for plastic part development and manufacture. Reverse engineering (RE), re-engineering (ReE) and mold design have been incorporated to infuse agile chara...
THE BUCKLING ANALYSIS OF A RECTANGULAR PLATE ELASTICALLY CLAMPED ALONG THE LONGITUDINAL EDGES
The paper analyses the stability of a rectangular plate which is elastically buckled along longitudinal edges and pressed by equally distributed forces. A general case is analyzed – different stiffness elastic clamping a...