Mechanical properties of SiC/SiC braided tubes for fuel cladding

Rohmer, Éric; Martín, E.; Lorrette, Christophe

doi:10.1016/j.jnucmat.2014.06.035

Cited by 43 publications

(34 citation statements)

References 18 publications

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“…Two more sequential jumps in He leak rate ( Figure 8D,E) were T A B L E 4 Summary of CMC experimental properties and literature properties. 5,14,38,39 caused by additional crack opening before final loss of load-bearing capacity of CMC_03. The elastic response of each CMC specimen aligned well ( Figure 9A), but the continued response beyond the DFLS highlighted the differences between the specimens.…”

Section: Sic/sic Cmcmentioning

confidence: 99%

Unveiling hermetic failure of ceramic tubes by digital image correlation and acoustic emission

et al. 2019

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A new, in situ hermeticity testing apparatus has been developed to allow helium leak evaluation of ceramic tubes, including nuclear‐grade SiC/SiC fuel cladding ceramic matrix composites (CMC), during four‐point bending with simultaneous monitoring of local deformation and damage, using stereoscopic digital image correlation (DIC) and acoustic emissions. The capabilities of the experimental apparatus are demonstrated using alumina, borosilicate glass, and 4130 steel tubes with representative cladding dimensions and then applied to study the deformation‐hermeticity relationship of SiC/SiC CMCs. Results of three CMCs appear to indicate that matrix cracking occurs near the deviation from linearity strain at strains ranging from 0.04% to 0.06% and is shortly followed by an initial loss of gas tightness by 0.09% bending strain. Leaking increased in distinct steps over 0.1%‐0.2% bending strain, and within this range, results indicate that prior to fiber fracture, it is likely possible to regain gas tightness upon unloading. This technique and uncovered hermetic failure behavior are intended to progress the standardization of a test methodology for nuclear reactor components and to begin to resolve the mechanisms controlling distinct steps of ceramic matrix composite failure.

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Section: Sic/sic Cmcmentioning

confidence: 99%

Unveiling hermetic failure of ceramic tubes by digital image correlation and acoustic emission

et al. 2019

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“…The axial and hoop elastic moduli were reported to be 232 GPa and 158 GPa, respectively. Both the studies by Nozawa et al and Rohmer et al demonstrated the strong influence of fiber orientation on the mechanical properties of SiC‐SiC CMC. Deck et al conducted hoop tensile tests and uniaxial tensile tests on CVI SiC‐SiC CMC.…”

Section: Introductionmentioning

confidence: 94%

“…Several studies [18][19][20][21][22] have been conducted in the past to evaluate the properties of SiC-SiC CMC. Nozawa et al 18 conducted tensile and compressive tests on flat test specimens of 3 types of composites: plain-weave CVI, plainweave NITE, and unidirectional NITE SiC-SiC CMC.…”

Section: Background and Objectivesmentioning

confidence: 99%

“…The study also demonstrated that the Tsai-Wu 19 criterion can model the effect of anisotropy on the in-plane tensile and compressive stresses. In another study, Rohmer et al 20 22,23 conducted several mechanical tests and reported modulus, tensile, compressive and shear strength data for CVI SiC-SiC test specimens. Despite these studies, the database for this material is still far from being comprehensive.…”

Section: Background and Objectivesmentioning

confidence: 99%

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Interlaboratory round robin study on axial tensile properties of SiC‐SiC CMC tubular test specimens

Singh

Gonczy²,

Deck

et al. 2018

Int J Applied Ceramic Tech

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An interlaboratory round robin study was conducted on the tensile strength of SiC‐SiC ceramic matrix composite (CMC) tubular test specimens at room temperature with the objective of expanding the database of mechanical properties of nuclear grade SiC‐SiC and establishing the precision and bias statement for standard test method ASTM C1773. The mechanical properties statistics from the round robin study and the precision statistics and precision statement are presented herein. The data show reasonable consistency across the laboratories, indicating that the current C1773‐13 ASTM standard is adequate for testing ceramic fiber reinforced ceramic matrix composite tubular test specimen. It was found that the distribution of ultimate tensile strength data was best described with a two‐parameter Weibull distribution, while a lognormal distribution provided a good description of the distribution of proportional limit stress data.

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“…Methods for analyzing isotropic elastic tubes were applied to study the stress distribution of triaxial braided carbon T-700 composite tubes under internal pressure, and to calculate hoop stress; large local strain variations and large strains at the composites were noted [3]. Elastic limits in strain curves, and subsequently hoop stresses, have been determined experimentally and by using isotropic elastic tube equations developed for calculations on silicon carbide fiber reinforced matrix tubes with interlocking 3D braided preforms [4].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Hoop Stress Affecting Braided Carbon Fiber Reinforced Plastics Subjected to Internal Pressure

et al. 2019

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Braided carbon fiber reinforced plastics (CFRPs) can be employed in the construction of pressurized vessels to increase performance and reduce overall weight. However, owing to the complex braiding structures resulting from the braiding process, an analysis of the elastic modulus is important as it affects the hoop stress on the pressure vessel. In this study, braided preformed CFRP constructed on a steel cylinder subjected to internal pressure was experimentally investigated using a simple approach that involved estimating the elastic modulus and hoop stress. Five types of braided preformed CFRP with different braiding angles and number of applied layers were analyzed. The elastic modulus and hoop stress can be estimated from these measurements of the internal pressure. The differences in the braided structures result in different strain values and affect the elastic modulus. High braiding angles tend to be more stable against high internal pressure, and exhibit small strain differences and high elastic modulus in the hoop direction. Similar results were observed when additional layers were applied. Increasing the braiding angle and the number of layers can increase the average elastic modulus.

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Mechanical properties of SiC/SiC braided tubes for fuel cladding

Cited by 43 publications

References 18 publications

Unveiling hermetic failure of ceramic tubes by digital image correlation and acoustic emission

Unveiling hermetic failure of ceramic tubes by digital image correlation and acoustic emission

Interlaboratory round robin study on axial tensile properties of SiC‐SiC CMC tubular test specimens

Experimental Study on Hoop Stress Affecting Braided Carbon Fiber Reinforced Plastics Subjected to Internal Pressure

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