Implementation of heterodyning effect for monitoring the health of adhesively bonded and fastened composite joints |
| |
| Affiliation: | 1. Applied Research Center, Florida International University, Miami, FL, USA;2. Department of Mechanical & Materials Engineering, Florida International University, Miami, FL, USA;3. Mechatronics Engineering Department, Technology Faculty, Marmara University, Istanbul, Turkey;1. School of Civil and Environmental Engineering, Cornell University, 220 Hollister Hall, Ithaca, NY 14853, United States;2. Center for Applied Mathematics, Cornell University, 657 Frank H.T. Rhodes Hall, Ithaca, NY 14853, United States;3. Asian School of the Environment, Nanyang Technological University, 62 Nanyang Dr, Singapore, 637459, Singapore;1. Florida International University, 10555 West Flagler St., Miami, FL 33174, USA;2. Mustafa Kemal University, 31040 Ataturk Caddesi, Hatay, Turkey;3. Monash University, Wellington Road, Clayton, Victoria 3800, Australia;1. Division of Neurobiology, Faculty of Medicine, University of Miyazaki, 5200 Kihara, Kiyotake, Miyazaki 889-1692, Japan;2. Department of Environmental Information, Faculty of Environmental Studies, Hiroshima Institute of Technology, 2-1-1, Miyake, Saeki-ku, Hiroshima 731-5193, Japan;3. Department of Obstetrics and Gynecology, Faculty of Medicine, University of Miyazaki, 5200 Kihara, Kiyotake, Miyazaki 889-1692, Japan;4. Department of Neuroscience, Faculty of Medicine, University of Miyazaki, 5200 Kihara, Kiyotake, Miyazaki 889-1692, Japan;5. Department of Psychiatry, Faculty of Medicine, University of Miyazaki, 5200 Kihara, Kiyotake, Miyazaki 889-1692, Japan;1. College of Shipbuilding Engineering, Harbin Engineering University, China;2. School of Engineering and Mathematical Sciences, City University London, United Kingdom |
| |
| Abstract: | Composite materials are a preferred choice when high strength/weight ratio and resistance to corrosion are needed. For assembly, composite parts are joined by using adhesives and/or fasteners. Due to the increased use of composites, there is a need for reliable and affordable structural health monitoring (SHM) methods for the detection of weakened bonds and loosened fasteners. Heterodyne effect may be utilized for the evaluation of debonded area when the linear characteristics of the system changes to nonlinear as a result of light contact in the bonding zone and this nonlinear system responds to appropriate bitonal excitations with new frequencies. Nonlinear elastic wave spectroscopy (NEWS) methods are using the same concept although they are limited to the combination of a high and a low frequency. Heterodyne method allows the engineers to have control over the new output frequencies as indicators of nonlinearity in the target structure. In this study, implementation of the heterodyne method is proposed for identification of the debonded region and evaluation of the compressive forces applied to facing plates. The proposed SHM method proved to be effective in both scenarios. |
| |
| Keywords: | Structural health monitoring SHM Composite Heterodyne method Debonding Delamination |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
