Study of mechanical properties and cracking extension resistance behavior of C/SiC composites by single edge notched beam and digital image correlation techniques

Mao, Weiguo; Chen, J.; Si, M.; Zhang, R.F.; Zhang, Peng; Dai, Cuiying; Ma, Qingsong; Fang, Daining

doi:10.1016/j.msea.2015.09.101

Cited by 25 publications

(3 citation statements)

References 44 publications

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“…The sampling rate of the camera was set as one image per second in this work. The detailed information was described in our previous works [23,[27][28][29][30][31]. Two illumination white lights (GOM Co., Germany) were used to compensate the light intensity and decrease the influence of high temperature thermal radiation.…”

Section: Dic Testsmentioning

confidence: 99%

“…It is difficult to obtain the full/local displacement or strain field of cathodes and anodes in LIBs. In recent years, digital image correlation (DIC) technique has been increasing quickly as a powerful tool for non-contact and non-destructive displacement measurement method under different scales and experimental temperatures [22][23][24]. However, to the best of our knowledge, less effort has been devoted to use DIC techniques to in-situ study the evolution of full/local strain fields and volume change in batteries subjected to typical electrochemical operations.…”

Section: Introductionmentioning

confidence: 99%

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In-situ measurements of mechanical and volume change of LiCoO2 lithium-ion batteries during repeated charge–discharge cycling by using digital image correlation

et al. 2016

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In-situ morphological evolution of displacement in pouch-type commercial lithium-ion batteries during multiple fifty-five electrochemical charging-discharging cycles was measured via digital image correlation technique. The maximum principal strain on the battery surface reached 0.35% during 55 cycles. The whole volume change analysis of LIBs shows that the maximum volume change rate arrives at 4.27% at the fully 52 nd charging end, and the maximum residual volume change rate is about 2.89% at the 54 th discharging end. The surface morphologies of cathodes and anodes before and after electrochemical cycling were observed by scanning electron microscopy. The elastic modulus of the copper foil in LIBs decrease from as-received 16.7 GPa to 10.6 GPa after 55 cycles by using tensile tests.

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Section: Dic Testsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

In-situ measurements of mechanical and volume change of LiCoO2 lithium-ion batteries during repeated charge–discharge cycling by using digital image correlation

et al. 2016

Self Cite

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“…The sampling rate of the camera was set as one image per second in this work. The detailed information was described in our previous works [16,[18][19][20][21][22]. In order to observe the crack nucleation and propagation patterns clearer, we added a telephoto zoom Nikon lens and a 490 nm optical band pass filter in front of the camera (see Fig.…”

Section: Sample Preparationmentioning

confidence: 99%

High temperature digital image correlation evaluation of in-situ failure mechanism: An experimental framework with application to C/SiC composites

Mao

Chen

et al. 2016

Materials Science and Engineering: A

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a b s t r a c tA high temperature digital image correlation (DIC) technique was developed, which was applied to study the in-situ fracture behavior of a carbon fibre reinforced silicon carbide matrix (C/SiC) composite. The displacement distribution and cracking information of the C/SiC single edge notched beam specimen can be monitored real-time, thanks to the improved DIC technique with special speckle patterns that can reach up to 1600°C. The results showed that the brittle to ductile transition temperature of C/SiC composites is about 1300°C. The new failure mechanisms of C/SiC composites at different experimental temperatures were further verified with the aid of X-ray diffraction and scanning electron microscope (SEM) techniques. In addition, the relationships between the fracture toughness, first-crack strength of C/ SiC composites and environmental temperature were deduced. The proposed experimental method and testing results may shed some light on assessing the reliability and durability of C/SiC composites at high temperatures.

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Mechanical response and critical failure mechanism characterization of notched carbon fiber reinforced polymer laminate subjected to tensile loading

Wang

et al. 2020

Polymer Composites

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The purpose of this article is to investigate the mechanical responses and critical failure mechanisms of notched composite laminates with the aid of numerical and experimental approaches, considering the effect of notch geometry, notch size and off-axis angle. Quasi-static tensile tests are implemented to study the influence of design variables on the mechanical response, during which the relationship of force vs displacement and strain distributions are collected by means of digital image correlation technique. Subsequently, the numerical simulation is implemented in ABAQUS/Explicit through a progressive damage model integrated with a VUMAT subroutine. Meanwhile, the initiation and propagation of damage are explored through the damage morphologies, combining with the logarithmic strain components from numerical predictions. Results show that notch strength and failure strain are more closely associated with off-axis angle and notch size compared with notch geometry. In addition, with the increase of off-axis angle, the contribution of fiber is increasingly weakened, the damage mode gradually varies from fiber fracture to pull out accompanied with the damage near the notch changing from fiber fracture to delamination. Meanwhile, the critical failure mechanism varies from tension dominated to tension-shear/ shear dominated as the off-axis angle grows larger. K E Y W O R D S composite laminates, digital image correlation, failure mechanism, notch strength 1 | INTRODUCTION Carbon fiber reinforced polymer (CFRP) laminate has been increasingly applied in light of its outstanding performance and superior damage tolerance. Compared with traditional materials, it has many typical advantages, such as high specific strength and stiffness, [1-3] improved impact and fatigue resistance, [4-6] perfect corrosion resistance and moistureproof ability, [7] and so forth. During the application, in addition to the complicated loading conditions, the unavoidable notches for mechanical connections also pose a risk to the load-bearing capacity and service life. In addition, notch geometry and notch size are usually diversified to facilitate the connection of structural components, which significantly diminishes the mechanical properties and further complicates the exploration of mechanical behaviors. Furthermore, due to the anisotropy, brittleness, heterogeneity, and obvious difference between the interlaminar and intralaminar property, damage patterns, and failure mechanisms of composites also present complexity and diversity. [8]

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Study of mechanical properties and cracking extension resistance behavior of C/SiC composites by single edge notched beam and digital image correlation techniques

Cited by 25 publications

References 44 publications

In-situ measurements of mechanical and volume change of LiCoO2 lithium-ion batteries during repeated charge–discharge cycling by using digital image correlation

In-situ measurements of mechanical and volume change of LiCoO2 lithium-ion batteries during repeated charge–discharge cycling by using digital image correlation

High temperature digital image correlation evaluation of in-situ failure mechanism: An experimental framework with application to C/SiC composites

Mechanical response and critical failure mechanism characterization of notched carbon fiber reinforced polymer laminate subjected to tensile loading

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