Automated laser-based barely visible impact damage detection in honeycomb sandwich composite structures

2015 ◽  
Author(s):  
D. Girolamo ◽  
L. Girolamo ◽  
F. G. Yuan
Keyword(s):  
Damage Detection ◽  
Composite Structures ◽  
Impact Damage ◽  
Sandwich Composite ◽  
Honeycomb Sandwich ◽  
Honeycomb Sandwich Composite

scholarly journals Finite Element Analysis of Honeycomb Sandwich Composite Structures With Various Joints

2021 ◽  
Vol 12 (1S) ◽  
pp. 531-535
Author(s):  
R.Karthikeyan, Et. al.
Keyword(s):  
Mechanical Properties ◽  
Finite Element Analysis ◽  
Composite Structures ◽  
Sandwich Composite ◽  
Failure Strength ◽  
Ansys Software ◽  
Butt Joints ◽  
Element Analysis ◽  
Honeycomb Sandwich ◽  
Honeycomb Sandwich Composite

This work focuses on the numerical investigation of mechanical properties of aluminium honeycomb sandwich composite structures with lap and butt joints. The joints are bonded using adhesive, welded and bolted which were designed using CATIA software. The static and dynamic structural analyses were performed to compute the mechanical properties of aluminium honeycomb composite structures with various joints using ANSYS software. Finally, the models were developed for estimating the failure strength of joints in honeycomb sandwich composite structures.

Investigation of Honeycomb Sandwich Composite Structure with Pre-Damage under Uniaxial Compression

2013 ◽  
Vol 658 ◽  
pp. 242-246
Author(s):  
Hui Min Yan ◽  
Bin Liu ◽  
Fei Xu ◽  
Ya Ge Liu
Keyword(s):  
Sandwich Structure ◽  
Failure Modes ◽  
Impact Damage ◽  
Adhesive Layer ◽  
Sandwich Composite ◽  
Adhesive Properties ◽  
Damage Level ◽  
Honeycomb Sandwich ◽  
Honeycomb Sandwich Composite ◽  
The Impact

In this paper, the failure modes of the honeycomb sandwich structure under uniaxial compressions after impact (CAI) are analyzed through experiments and Finite Element Method (FEM). Three cases of impact damage location, two cases of impact damage depth and adhesive properties are investigated by the comparisons of corresponding non-destructive structure. Several conclusions are drawn: the failure modes and the initial damage positions obtained from experiments and FEM simulations are almost the same; the location of impact damage may affect the overall loading capabilities of the sandwich structure, whose decreasing rate peaks when the damage is at the top surface and drops when the damage is at the marginal area; different adhesive layer property of interface may lead to the failure mode change, that is, instead of honeycomb core failure, interlaminar failure will occur when the fracture energy of the adhesive layer is low; the damage level and risky location of the structure will vary relevant to the impact energy.

Prediction of Elastic Properties of Honeycomb Core Materials and Analysis of Interlaminar Stress of Honeycomb Sandwich Composite Plate

2006 ◽  
Vol 306-308 ◽  
pp. 763-768
Author(s):  
Hyoung Gu Kim ◽  
Hoong Soo Yoon ◽  
Nak Sam Choi
Keyword(s):  
Poisson’S Ratio ◽  
Poisson's Ratio ◽  
Sandwich Composite ◽  
Plate Model ◽  
Honeycomb Core ◽  
Interlaminar Stresses ◽  
Honeycomb Sandwich ◽  
Honeycomb Sandwich Composite ◽  
Theoretical Results ◽  
Core Materials

Theoretical formulas for effective elastic modulus and Poisson's ratio of honeycomb core materials were proposed considering the bending, axial and shear deformations of cell walls. Theoretical results obtained by the formulas showed orthotropic elasticity and large Poisson’s ratio, which were comparable to results by finite element analysis(FEA). Tensile test of honeycomb sandwich composite(HSC) plates was performed for analysis of their deformation behaviors and interlaminar stresses. Equivalent plate model using the theoretical results of honeycomb core layer show that interlaminar shear stress occurring due to large difference of Poisson’s ratio between skin and honeycomb core layers led to the delamination in HSC plate under tensile loading. Load-displacement behavior of HSC specimen simulated by equivalent plate model coincided fairly with that of detailed FEA model similar to experimental results.

Feasibility of PZT ceramics for impact damage detection in composite structures

2015 ◽  
Author(s):  
Gerges Dib ◽  
Ermias Koricho ◽  
Oleksii Karpenko ◽  
Mahmood Haq ◽  
Lalita Udpa ◽  
...  
Keyword(s):  
Damage Detection ◽  
Composite Structures ◽  
Impact Damage ◽  
Pzt Ceramics
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