scholarly journals Micromechanical modelling of matrix cracks effect on shear and transverse response for unidirectional composites with a full field approach

2019 ◽  
Vol 208 ◽  
pp. 338-345 ◽  
Author(s):  
B. Burgarella ◽  
A. Maurel-Pantel ◽  
N. Lahellec ◽  
C. Hochard
Keyword(s):  
Unidirectional Composites ◽  
Full Field ◽  
Micromechanical Modelling ◽  
Field Approach ◽  
Matrix Cracks ◽  
Transverse Response

Full-Field Approach for Modeling of Microstructural Evolutions During Forming Processes

2019 ◽  
Author(s):  
S. Andrietti ◽  
M. Bernacki ◽  
N. Bozzolo ◽  
L. Maire ◽  
P. De Micheli ◽  
...  
Keyword(s):  
Full Field ◽  
Field Approach

Damping in Unidirectional and Cross-Ply Ceramic Matrix Composites With Matrix Cracks

2001 ◽  
Author(s):  
Victor Birman ◽  
Larry W. Byrd
Keyword(s):  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Interfacial Friction ◽  
Matrix Composites ◽  
Matrix Interface ◽  
Unidirectional Composites ◽  
Matrix Cracks ◽  
Dissipation Of Energy ◽  
Fiber Matrix Interface ◽  
Fiber Matrix

Abstract The paper elucidates the methods of estimating damping in ceramic matrix composites (CMC) with matrix cracks. Unidirectional composites with bridging matrix cracks and cross-ply laminates with tunneling cracks in transverse layers and bridging cracks in longitudinal layers are considered. It is shown that bridging matrix cracks may dramatically increase damping in unidirectional CMC due to a dissipation of energy along damaged sections of the fiber-matrix interface (interfacial friction). Such friction is absent in the case of tunneling cracks in transverse layers of cross-ply laminates where the changes in damping due to a degradation of the stiffness remain small. However, damping in cross-ply laminates abruptly increases if bridging cracks appear in the longitudinal layers.

scholarly journals Filament wound composite fatigue mechanisms investigated with full field DIC strain monitoring

2021 ◽  
Vol 11 (1) ◽  
pp. 401-413
Author(s):  
Eivind Hugaas ◽  
Andreas T. Echtermeyer
Keyword(s):  
Strain Field ◽  
Structural Integrity ◽  
Pressure Vessels ◽  
Image Correlation ◽  
Catastrophic Failure ◽  
Fiber Failure ◽  
Full Field ◽  
Matrix Cracks ◽  
Filament Wound ◽  
Over Time

Abstract Fatigue of filament wound materials was investigated using Digital Image Correlation DIC monitoring every 50th cycle of a high cycle fatigue test of a split disk ring sample. The ring was cut from a filament wound glass fiber reinforced polymer pressure vessel and had a hole. The strain field redistributed over time, lowering and moving strain concentrations. The redistributive behavior was most extensive in areas that later developed local fiber failure, which soon led to catastrophic failure. Microscopy was carried out on partially fatigued material. Damage evolved as matrix cracks and matrix splitting of groups of fibers and complete debonding of single fibers. This occurred at borders of voids and matrix cracks, easing progressive fiber failure. It was concluded that fatigue in filament wound composites has an extensive matrix damage phase before final failure. Fibers could locally withstand strains close to and above the static failure strain for considerable number of cycles if little local strain field redistribution was observed. The used method was able to detect changes in the strain fields that preceded catastrophic failure. It was concluded that DIC combined with the post processing methods presented may serve as a valuable tool for structural integrity monitoring of composite pressure vessels over time.

Sugars Production for Green Chemistry from 2nd Generation Crop (Arundo donax L.): A Full Field Approach.

2016 ◽  
Vol 1 (11) ◽  
pp. 2617-2623 ◽  
Author(s):  
Luca Corno ◽  
Roberto Pilu ◽  
Kim Tran ◽  
Fulvia Tambone ◽  
Seema Singh ◽  
...  
Keyword(s):  
Green Chemistry ◽  
Arundo Donax ◽  
Full Field ◽  
Field Approach ◽  
2Nd Generation ◽  
Arundo Donax L

scholarly journals Modeling of dynamic and post-dynamic recrystallization by coupling a full field approach to phenomenological laws

2017 ◽  
Vol 133 ◽  
pp. 498-519 ◽  
Author(s):  
Ludovic Maire ◽  
Benjamin Scholtes ◽  
Charbel Moussa ◽  
Nathalie Bozzolo ◽  
Daniel Pino Muñoz ◽  
...  
Keyword(s):  
Dynamic Recrystallization ◽  
Full Field ◽  
Field Approach
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