Monitoring of compression-after-impact testing of CFRP laminates subjected to simulated lightning damage by acoustic emission

2014 ◽  
Vol 18 (sup1) ◽  
pp. S1-44-S1-46 ◽  
Author(s):  
O.-Y. Kwon ◽  
J.-H. Shin
Keyword(s):  
Acoustic Emission ◽  
Impact Testing ◽  
Cfrp Laminates ◽  
Compression After Impact

Compression-after-Impact Testing of CFRP Laminates Subjected to Simulated Lightning Damage Monitored by Acoustic Emission

2012 ◽  
Vol 224 ◽  
pp. 73-76 ◽  
Author(s):  
Oh Yang Kwon ◽  
Jae Ha Shin
Keyword(s):  
Acoustic Emission ◽  
Carbon Fibers ◽  
Composite Structures ◽  
Impact Testing ◽  
Nano Particles ◽  
Lightning Strike ◽  
Lightning Strikes ◽  
Cfrp Laminates ◽  
Compression After Impact ◽  
Coated Carbon

CFRP laminates made of nano-particles-coated carbon fibers and damaged by a simulated lightning strike were tested under the compression-after-impact (CAI) mode, during which the damage progression was monitored by acoustic emission (AE). The effects of nano-particles coating on the degree of lightning-damage and the mechanical integrity of composite structures damaged by lightning strikes have been evaluated in terms of AE activities.

Low Velocity and Compression-After-Impact Response of Pin-Reinforced Sandwich Composites

1999 ◽  
Author(s):  
Uday K. Vaidya ◽  
Mohan V. Kamath ◽  
Mahesh V. Hosur ◽  
Anwarul Haque ◽  
Shaik Jeelani
Keyword(s):  
Impact Testing ◽  
Low Velocity Impact ◽  
Sandwich Composites ◽  
Low Velocity ◽  
Static Compression ◽  
Velocity Impact ◽  
Transverse Stiffness ◽  
Impact Studies ◽  
Compression After Impact ◽  
The Impact

Abstract In the current work, sandwich composite structures with innovative constructions referred to as Z-pins, or truss core pins are investigated, in conjunction with traditional honeycomb and foam core sandwich constructions, such that they exhibit enhanced transverse stiffness, high damage resistance and furthermore, damage tolerance to impact. While the investigations pertaining to low velocity impact have appeared recently in Vaidya et al. 1999, the current paper deals with compression-after-impact studies conducted to evaluate the residual properties of sandwich composites “with” and “without” reinforced foam cores. The resulting sandwich composites have been investigated for their low velocity (< 5 m/sec) impact loading response using instrumented impact testing at energy levels ranging from 5 J to 50 J impact energy. The transverse stiffness of the cores and their composites has also been evaluated through static compression studies. Compression-after-impact studies were then performed on the sandwich composites with traditional and pin-reinforcement cores. Supporting vibration studies have been conducted to assess the changes in stiffness of the samples as a result of the impact damage. The focus of this paper is on the compression-after-impact (CAI) response and vibration studies with accompanying discussion pertaining to the low velocity impact.

Analysis of Drill Tool Wear Using Acoustic Emission Signals Based on IBS Technique for CFRP Laminates

2021 ◽  
pp. 89-111
Author(s):  
V. Rishikesan ◽  
N. Arunachalam ◽  
R. Velmurugan ◽  
L. Vijayaraghavan
Keyword(s):  
Acoustic Emission ◽  
Tool Wear ◽  
Cfrp Laminates ◽  
Drill Tool
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