scholarly journals Quantifying the Delamination of L-Shaped Composite Laminates Under Low Velocity Impact Using X-Ray Computed Tomography

2018 ◽  
Author(s):  
KENAN CINAR ◽  
IBRAHIM GUVEN ◽  
FATIH OZ ◽  
NURI ERSOY
Keyword(s):  
Computed Tomography ◽  
Composite Laminates ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Velocity Impact ◽  
X Ray ◽  
X Ray Computed

scholarly journals Classification of Cracks in Composite Structures Subjected to Low-Velocity Impact Using Distribution-Based Segmentation and Wavelet Analysis of X-ray Tomograms

Sensors ◽  
2021 ◽  
Vol 21 (24) ◽  
pp. 8342
Author(s):  
Angelika Wronkowicz-Katunin ◽  
Andrzej Katunin ◽  
Marko Nagode ◽  
Jernej Klemenc
Keyword(s):  
Composite Structures ◽  
Structural Damage ◽  
Residual Life ◽  
Impact Damage ◽  
Low Velocity Impact ◽  
Fracture Mechanisms ◽  
Low Velocity ◽  
Velocity Impact ◽  
X Ray ◽  
X Ray Computed

The problem of characterizing the structural residual life is one of the most challenging issues of the damage tolerance concept currently applied in modern aviation. Considering the complexity of the internal architecture of composite structures widely applied for aircraft components nowadays, as well as the additional complexity related to the appearance of barely visible impact damage, prediction of the structural residual life is a demanding task. In this paper, the authors proposed a method based on detection of structural damage after low-velocity impact loading and its classification with respect to types of acting stress on constituents of composite structures using the developed processing algorithm based on segmentation of 3D X-ray computed tomograms using the rebmix package, real-oriented dual-tree wavelet transform and supporting image processing procedures. The presented algorithm allowed for accurate distinguishing of defined types of damage from X-ray computed tomograms with strong robustness to noise and measurement artifacts. The processing was performed on experimental data obtained from X-ray computed tomography of a composite structure with barely visible impact damage, which allowed better understanding of fracture mechanisms in such conditions. The gained knowledge will allow for a more accurate simulation of structural damage in composite structures, which will provide higher accuracy in predicting structural residual life.

scholarly journals Impact Response and Energy Distribution of Low Velocity Impact on Composite Laminates

2018 ◽  
Vol 74 (10) ◽  
pp. 207-214
Author(s):  
Bin Zhou ◽  
Xiaopeng Shi ◽  
Lei Wang ◽  
Junjie Yin ◽  
Yue Liu ◽  
...  
Keyword(s):  
Energy Distribution ◽  
Composite Laminates ◽  
Impact Response ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Velocity Impact
Sign in / Sign up

Export Citation Format

Share Document