Low-velocity impact response of smart sandwich composite plates with piezoelectric transducers: Modeling and experiments

2015 ◽  
Vol 27 (6) ◽  
pp. 774-785 ◽  
Author(s):  
Theofanis S Plagianakos ◽  
Klajd Lika ◽  
Evangelos G Papadopoulos
Keyword(s):  
Composite Plates ◽  
Piezoelectric Transducers ◽  
Impact Response ◽  
Low Velocity Impact ◽  
Sandwich Composite ◽  
Low Velocity ◽  
Velocity Impact ◽  
Modeling And Experiments

Low-Velocity Global-Local Impact Response of Smart Composite and Sandwich Composite Plates With Piezoelectric Transducers

2014 ◽  
Author(s):  
Theofanis S. Plagianakos ◽  
Evangelos G. Papadopoulos
Keyword(s):  
Impact Force ◽  
Thickness Distribution ◽  
Computational Cost ◽  
Output Feedback Control ◽  
Composite Plates ◽  
Piezoelectric Transducers ◽  
Impact Response ◽  
Low Velocity Impact ◽  
Sandwich Composite ◽  
Low Velocity

Higher-order layerwise piezoelectric laminate mechanics are presented for predicting the low-velocity impact response of pristine composite and sandwich composite plates with piezoelectric transducers. The present formulation enables prediction of the global (temporal variation of impact force, deflection, strain and sensory potential) and local through-thickness (distribution of displacement, stress and strain) impact response of plates with piezoelectric layers or patches. Its enhanced capabilities include efficiency in terms of computational cost, since the system matrices are reduced by means of a Guyan scheme or by using the eigenvectors, thus leading to a plate-impactor system containing a single or two deflection amplitudes per vibration mode, depending on consideration of transverse compressibility. The transfer of the plate-impactor system to state-space enables investigation of the feasibility of real-time active control towards impact force reduction by using output feedback control laws.

Low-velocity impact response in composite plates embedding shape memory alloy wires

2012 ◽  
Vol 33 (5) ◽  
pp. 655-664 ◽  
Author(s):  
Silvio Pappadà ◽  
Rocco Rametta ◽  
Alessandro Largo ◽  
Alfonso Maffezzoli
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Composite Plates ◽  
Impact Response ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Velocity Impact

Control of Low-Velocity Impact Response in Composite Plates

2000 ◽  
Vol 6 (3) ◽  
pp. 429-447 ◽  
Author(s):  
Ahmet S. Yigit ◽  
Andreas P. Christoforou
Keyword(s):  
Composite Plates ◽  
Impact Response ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Velocity Impact

scholarly journals An Investigation on Low Velocity Impact Response of Multilayer Sandwich Composite Structures

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
S. Jedari Salami ◽  
M. Sadighi ◽  
M. Shakeri ◽  
M. Moeinfar
Keyword(s):  
Composite Structures ◽  
Sandwich Panel ◽  
Testing Machine ◽  
Impact Response ◽  
Low Velocity Impact ◽  
Core Material ◽  
Sandwich Composite ◽  
Low Velocity ◽  
Velocity Impact ◽  
The Core

The effects of adding an extra layer within a sandwich panel and two different core types in top and bottom cores on low velocity impact loadings are studied experimentally in this paper. The panel includes polymer composite laminated sheets for faces and the internal laminated sheet called extra layer sheet, and two types of crushable foams are selected as the core material. Low velocity impact tests were carried out by drop hammer testing machine to the clamped multilayer sandwich panels with expanded polypropylene (EPP) and polyurethane rigid (PUR) in the top and bottom cores. Local displacement of the top core, contact force and deflection of the sandwich panel were obtained for different locations of the internal sheet; meanwhile the EPP and PUR were used in the top and bottom cores alternatively. It was found that the core material type has made significant role in improving the sandwich panel’s behavior compared with the effect of extra layer location.

Low-velocity impact of sandwich composite plates

2004 ◽  
Vol 44 (6) ◽  
pp. 574-583 ◽  
Author(s):  
J. Gustin ◽  
M. Mahinfalah ◽  
G. Nakhaie Jazar ◽  
M. R. Aagaah
Keyword(s):  
Composite Plates ◽  
Low Velocity Impact ◽  
Sandwich Composite ◽  
Low Velocity ◽  
Velocity Impact

Effects of Absorbed Moisture Content on the Impact Response of Specially-Orthotropic Composite Plates

2019 ◽  
Author(s):  
Furqan Ahmad ◽  
Fethi Abbassi ◽  
Sajjad Miran
Keyword(s):  
Moisture Content ◽  
Composite Plates ◽  
Peak Force ◽  
Impact Response ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Constant Weight ◽  
Velocity Impact ◽  
Moisture Contents ◽  
The Impact

Abstract This paper addresses the hygroscopic effects on the impact response of specially-orthotropic carbon fiber reinforced polymer composite plates under low-velocity impact loading. The material used in this study is Toray T800/3900 which is consist of carbon fibers and epoxy resin. For different percentage of moisture content by weight in the composite plates, low-velocity impact tests were done by using the 8-ply unidirectional [UD] and cross-ply [CP] composite plates with newly designed mini-drop tower testing machine. To study the hygroscopic effects, specimens were impacted by constant weight of impactor (3.44 Kg) with fixed impact height of 0.70 m corresponding to 23.62 J impact energy. The experiments were carried out on plates with dimension of 125 mm × 125 mm × 1.5 mm for simply supported boundary conditions. All UD composite plates were broken into two parts, but the impactor bounces back after hitting the top layer of the CP composite plate for all conditions. The strength of the UD composite plates decreased with increase of moisture contents, but with the increased of moisture contents, a small change was observed in the peak force, time to peak force values and absorbed energy for the CP composite plates. The large size damage areas were observed for wet plates as compared to dry plates. Absorbed moisture contents also have effect on the impactor velocity and impactor displacement.

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