Effect of interface crack on lateral buckling behavior and free vibration response of a sandwich composite beam

2012 ◽  
Vol 47 (15) ◽  
pp. 1843-1851 ◽  
Author(s):  
M Evren Toygar ◽  
Zeki Kıral ◽  
Onur Sayman ◽  
Yusuf Arman ◽  
Mustafa Özen
Keyword(s):  
Free Vibration ◽  
Interface Crack ◽  
Composite Beam ◽  
Vibration Response ◽  
Sandwich Composite ◽  
Lateral Buckling ◽  
Buckling Behavior ◽  
Free Vibration Response

A Composite Sandwich Structure With Embedded MEMS-Based Vibration Sensing

1999 ◽  
Author(s):  
Kishore Pochiraju
Keyword(s):  
Free Boundary ◽  
Free Vibration ◽  
Boundary Conditions ◽  
Sandwich Beam ◽  
Shear Deformation Theory ◽  
Vibration Response ◽  
Vibration Monitoring ◽  
Sandwich Composite ◽  
Free Boundary Conditions ◽  
Free Vibration Response

Abstract This paper presents a sandwich composite architecture suitable for embedding MEMS-based accelerometers for long-term vibration monitoring or to act as sensors in adaptive structures. The presented architecture is designed around multi-axis accelerometers and temperature sensors that are commercially available. These devices also integrate sophisticated sensor compensation and data acquisition hardware into a single integrated circuit chip package. The paper presents the stiffness modeling of a sandwich composite with embedded accelerometers based on classical lamination theory. The first order shear deformation theory is used to compute the free vibration response of the sandwich composite. Solutions are presented for the free-vibration response of the sandwich beam under fixed-free boundary conditions. Results presented also include the response obtained from the MEMS-accelerometer when coupled to a thick cross-ply laminate under fixed-free boundary conditions.

A Study on Structural System Identification and Damage Detection for Free Vibration Response Using the Wavelet Transform

2015 ◽  
Vol 752-753 ◽  
pp. 1029-1034
Author(s):  
Asnizah Sahekhaini ◽  
Pauziah Muhamad ◽  
Masayuki Kohiyama ◽  
Aminuddin Abu ◽  
Lee Kee Quen ◽  
...  
Keyword(s):  
Free Vibration ◽  
Damage Detection ◽  
Vibration Response ◽  
Structural System ◽  
Modal Parameter ◽  
Modal Parameter Identification ◽  
Complex Morlet Wavelet ◽  
Structural System Identification ◽  
Free Vibration Response ◽  
Energy Components

This paper presents a wavelet-based method of identification modal parameter and damage detection in a free vibration response. An algorithm for modal parameter identification and damage detection is purposed and complex Morlet wavelet is chosen as an analysis wavelet function. This paper only focuses on identification of natural frequencies of the structural system. The method utilizes both undamaged and damage experiment data of free vibration response of the truss structure system. Wavelet scalogram is utilizes for damage detection. The change of energy components for undamaged and damage structure is investigated from the plot of wavelet scalogram which corresponded to the detection of damage.

Analytical and Experimental Study of Free Vibration Response of Soft-core Sandwich Beams

2004 ◽  
Vol 6 (3) ◽  
pp. 239-261 ◽  
Author(s):  
Vladimir S. Sokolinsky ◽  
Hubertus F. Von Bremen ◽  
J. André Lavoie ◽  
Steven R. Nutt
Keyword(s):  
Experimental Study ◽  
Free Vibration ◽  
Vibration Response ◽  
Soft Core ◽  
Sandwich Beams ◽  
Free Vibration Response

scholarly journals Investigation of Free Vibration Response of E-Glass/Epoxy Delaminated Composite Plates

2012 ◽  
Vol 21 (1) ◽  
pp. 096369351202100 ◽  
Author(s):  
Turan Ercopur ◽  
Binnur Goren Kiral
Keyword(s):  
Free Vibration ◽  
Natural Frequency ◽  
Epoxy Composite ◽  
Free Vibration Analysis ◽  
Composite Plates ◽  
Vibration Response ◽  
Mode Shapes ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Free Vibration Response

This paper deals with the finite element analysis of free vibration response of the delaminated composite plates. Free vibration analysis is performed by using ANSYS commercial software developing parametric input files. Natural frequency values and associated mode shapes of E-glass/epoxy composite delaminated plates are determined. Effects of delamination shape, dimension and location on the natural frequency and associated mode shapes are investigated and for the purpose of the observing the effect of the boundary conditions, cantilever and clamped-pinned delaminated composite plates are taken into consideration. Comparisons with the results in literature verify the validity of the developed models in this study. It is observed that the natural frequency decreases in the existence of the delamination and level of the decrease depends on the dimension, shape and location of the delamination.

Free vibration response of P-FGM and S-FGM sandwich shell panels: A comparison

2020 ◽  
Vol 28 ◽  
pp. 1701-1705
Author(s):  
Abhilash Karakoti ◽  
Shashank Pandey ◽  
Vishesh Ranjan Kar
Keyword(s):  
Free Vibration ◽  
Vibration Response ◽  
Sandwich Shell ◽  
Free Vibration Response
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