Next Article in Journal
Experimental Investigation of the Acoustic Nonlinear Behavior in Granular Polymer Bonded Explosives with Progressive Fatigue Damage
Next Article in Special Issue
Incipient Fault Detection for Rolling Element Bearings under Varying Speed Conditions
Previous Article in Journal
Microstructure and Dielectric Properties of LPCVD/CVI-SiBCN Ceramics Annealed at Different Temperatures
Previous Article in Special Issue
Lamb Wave-Based Structural Health Monitoring on Composite Bolted Joints under Tensile Load
Article Menu
Issue 6 (June) cover image

Export Article

Open AccessArticle
Materials 2017, 10(6), 656; doi:10.3390/ma10060656

Crack Identification in CFRP Laminated Beams Using Multi-Resolution Modal Teager–Kaiser Energy under Noisy Environments

1
Department of Engineering Mechanics, Hohai University, Nanjing 210098, China
2
Structural Health Monitoring Department, China Special Equipment Inspection and Research Institute, Beijing 100013, China
3
Institute of Fluid-Flow Machinery, Polish Academy of Sciences, ul. Fiszera 14, Gdansk 80-231, Poland
4
Faculty of Automotive and Construction Machinery, Warsaw University of Technology, Narbutta 84, Warsaw 02-524, Poland
*
Author to whom correspondence should be addressed.
Received: 15 April 2017 / Revised: 7 June 2017 / Accepted: 9 June 2017 / Published: 15 June 2017
(This article belongs to the Special Issue Structural Health Monitoring for Aerospace Applications 2017)
View Full-Text   |   Download PDF [6030 KB, uploaded 16 June 2017]   |  

Abstract

Carbon fiber reinforced polymer laminates are increasingly used in the aerospace and civil engineering fields. Identifying cracks in carbon fiber reinforced polymer laminated beam components is of considerable significance for ensuring the integrity and safety of the whole structures. With the development of high-resolution measurement technologies, mode-shape-based crack identification in such laminated beam components has become an active research focus. Despite its sensitivity to cracks, however, this method is susceptible to noise. To address this deficiency, this study proposes a new concept of multi-resolution modal Teager–Kaiser energy, which is the Teager–Kaiser energy of a mode shape represented in multi-resolution, for identifying cracks in carbon fiber reinforced polymer laminated beams. The efficacy of this concept is analytically demonstrated by identifying cracks in Timoshenko beams with general boundary conditions; and its applicability is validated by diagnosing cracks in a carbon fiber reinforced polymer laminated beam, whose mode shapes are precisely acquired via non-contact measurement using a scanning laser vibrometer. The analytical and experimental results show that multi-resolution modal Teager–Kaiser energy is capable of designating the presence and location of cracks in these beams under noisy environments. This proposed method holds promise for developing crack identification systems for carbon fiber reinforced polymer laminates. View Full-Text
Keywords: carbon fiber reinforced polymer laminated beam; crack identification; mode shape; Teager–Kaiser energy; multi-resolution modal Teager–Kaiser energy; scanning laser vibrometer carbon fiber reinforced polymer laminated beam; crack identification; mode shape; Teager–Kaiser energy; multi-resolution modal Teager–Kaiser energy; scanning laser vibrometer
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Xu, W.; Cao, M.; Ding, K.; Radzieński, M.; Ostachowicz, W. Crack Identification in CFRP Laminated Beams Using Multi-Resolution Modal Teager–Kaiser Energy under Noisy Environments. Materials 2017, 10, 656.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top