Observing progressive damage in carbon fiber epoxy laminate composites via 3D in-situ X-ray tomography

2021 ◽  
pp. 107626
Author(s):  
Alejandra M. Ortiz-Morales ◽  
Imad Hanhan ◽  
Jose Javier Solano ◽  
Michael D. Sangid
Keyword(s):  
Carbon Fiber ◽  
Progressive Damage ◽  
Laminate Composites ◽  
X Ray ◽  
Carbon Fiber Epoxy

In Situ Synchrotron X-ray Microtomography of Progressive Damage in Canted Notched Cross-Ply Composites with Interlaminar Nanoreinforcement

2022 ◽  
Author(s):  
Reed Kopp ◽  
Xinchen Ni ◽  
Carolina Furtado ◽  
Jeonyoon Lee ◽  
Estelle Kalfon-Cohen ◽  
...  
Keyword(s):  
Progressive Damage ◽  
X Ray

Evolution of Carbon Fiber Microstructure During Carbonization and High-Temperature Graphitization Measured In Situ Using Synchrotron Wide-Angle X-ray Diffraction

2015 ◽  
Vol 1754 ◽  
pp. 13-18 ◽  
Author(s):  
Michael Behr ◽  
James Rix ◽  
Brian Landes ◽  
Bryan Barton ◽  
Eric Hukkanen ◽  
...  
Keyword(s):  
High Temperature ◽  
Carbon Fiber ◽  
Tensile Modulus ◽  
Fiber Bundles ◽  
Wide Angle ◽  
High Modulus ◽  
Structure Property ◽  
X Ray Diffraction ◽  
X Ray

ABSTRACTThis paper will discuss the structure-property model developed that correlates the tensile modulus to the elastic properties and angular distribution of constituent graphitic layers for carbon fiber derived from a polyethylene precursor. In addition, a high-temperature fiber tensile device was built to enable heating of carbon fiber bundles at a variable rate from 25 °C to greater than ∼2300 °C, while simultaneously applying a tensile stress. This capability combined with synchrotron wide-angle x-ray diffraction (WAXD), enabled observation in situ and in real time of the microstructural transformation from different carbon fiber precursors to high-modulus carbon fiber. Experiments conducted using PAN- and PE-derived fiber precursors reveal stark differences in their carbonization and high-temperature graphitization behavior.

Fracture toughness of the novel in-situ polytriazolesulfone modified epoxy resin for carbon fiber/epoxy composites

2019 ◽  
Vol 77 ◽  
pp. 461-469 ◽  
Author(s):  
Minkyu Lee ◽  
Woong Kwon ◽  
Dongjun Kwon ◽  
Eunsoo Lee ◽  
Euigyung Jeong
Keyword(s):  
Fracture Toughness ◽  
Carbon Fiber ◽  
Epoxy Resin ◽  
Epoxy Composites ◽  
The Novel ◽  
Modified Epoxy ◽  
Carbon Fiber Epoxy

In situ observations of fractures in short carbon fiber/epoxy composites

Carbon ◽  
2014 ◽  
Vol 67 ◽  
pp. 368-376 ◽  
Author(s):  
Xiaofang Hu ◽  
Luobin Wang ◽  
Feng Xu ◽  
Tiqiao Xiao ◽  
Zhong Zhang
Keyword(s):  
Carbon Fiber ◽  
Epoxy Composites ◽  
Short Carbon Fiber ◽  
In Situ Observations ◽  
Carbon Fiber Epoxy ◽  
Short Carbon

DAMAGE EVOLUTION IN NON-CRIMP FABRIC CARBON FIBER/EPOXY MULTI-DIRECTIONAL LAMINATES UNDER QUASI-STATIC TENSION

2021 ◽  
Author(s):  
AADITYA SURATKAR ◽  
JOHN MONTESANO ◽  
JEFFREY WOOD
Keyword(s):  
Carbon Fiber ◽  
Damage Evolution ◽  
Epoxy Composite ◽  
Static Tension ◽  
Transfer Molding ◽  
Rtm Process ◽  
Static Tensile ◽  
Composite Microstructure ◽  
Carbon Fiber Epoxy

An experimental study was performed to characterize the evolution of damage in a unidirectional Non-Crimp Fabric (NCF) carbon fiber/snap-cure epoxy composite under in-plane quasi-static tensile loads. The NCF composites were manufactured using a High Pressure-Resin Transfer Molding (HP-RTM) process and comprised a fast-curing epoxy resin and heavy tow unidirectional carbon fiber NCF layers. Laminates with stacking sequences [0/±45/90] and [±45/0 ] were subjected to axial and transverse quasi-static tensile loads and an in-situ Edge replication (ER) technique was used to capture the damage evolution at predefined intervals. An imprint of the composite microstructure, as observed on the edges of a test coupon, was created on a cellulose acetate replicating tape, which was then observed under the microscope. The onset and progression of ply cracks and delamination, which were the two major damage modes present, were quantified and correlated with the stress-strain curves and changes in stiffness. The influence of stacking sequence and ply thickness are also captured.

Fold-Resistant Characteristics of the Laminate Composites for Flexible Structure

2011 ◽  
Vol 335-336 ◽  
pp. 54-57
Author(s):  
Yu Xi Liu ◽  
Yu Yan Liu ◽  
Chang Guo Wang ◽  
Hui Feng Tan
Keyword(s):  
Carbon Fiber ◽  
Fiber Bundle ◽  
Layer Structure ◽  
Reduction Rate ◽  
Resin Content ◽  
Aramid Fiber ◽  
Epoxy Composites ◽  
Laminate Composites ◽  
Space Applications ◽  
Carbon Fiber Epoxy

There is considerable interest in the use of flexible laminate composite materials to improve the deployable structures for space applications. Critical to acceptance of these materials is the ability to achieve high packaging strains without damage. However, there does exist more or less damage during the process of folding and unfolding for the laminate composites. Better understanding of folding damage, therefore, is needed for the design of laminate composites and folding pattern. In this work we present a study on the fold-resistant characteristics of two different laminate composites, which were fabricated by covering the aramid fiber/epoxy and carbon fiber/epoxy prepregs respectively with polyimide film on both sides. The results of tensile tests on 3-layer structure laminate composites show that the fold-resistant properties of aramid fiber/epoxy composites could be improved with increasing of the resin content and decreasing of the fiber bundle diameter. For carbon fiber/epoxy composites, the effects of resin content and fiber bundle diameter on reduction rate of fracture strength were more complex. There existed a best range of resin content and fiber bundle diameter. The microscopic observations show that folding resulted in piling up of resin and damage of reinforcing fiber, which would decrease the mechanical properties.

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