Mechanical hysteresis in ceramic matrix composites

Fantozzi, Gilbert; Reynaud, Pascal

doi:10.1016/j.msea.2008.09.128

Cited by 136 publications

(57 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As plotted in the Fig .1(a), the slope of the PS versus fatigue cycles is decreasing with the increased cycles, which indicates that the growth rate of PS gradually decreases with the increased cycles. Moreover, the decreased DM and the increased PS in the beginning are highly associated with the rapid initiation and growth of pre-existing matrix cracks, individual fiber breakage, plus an interfacial debonding [13,14]. Additionally, it is recommended that the initial PS within hundreds of cycles primarily result from the poor closure of extended cracks in the transverse bundles [15].…”

Section: Materials and Experimental Proceduresmentioning

confidence: 99%

Strength evolution of cyclic loaded LSI-based C/C-SiC composites

Xiao

et al. 2016

Ceramics International

View full text Add to dashboard Cite

An experimental investigation was performed to study the influence of fatigue damage introduced by different loading cycles on the residual tensile strength (RTS) of plainweave reinforced C f /C-SiC composites (2D C/C-SiC). The specimens were subjected to the fatigue stress of 57 MPa for the preselected numbers of cycles as follows: 10 2 , 10 4 and 10 5 , respectively, before the static tensile test. The microstructures and fractured surfaces after the tensile test were examined by optical and scanning electron microscopy, respectively. The results showed that the RTS of the specimens after the preselected fatigue cycles numbers of 10 2 , 10 4 and 10 5 increase to 89.8, 94.1 and 82.4 MPa, respectively, which are somewhat higher compared to the virgin samples (79.7 MPa).Additionally, we found that the linear part of the tensile stress-strain curve is independent on the fatigue cycles. Finally, the increased fatigue damage in C/C-SiC composites could determine a reduction of elastic modulus in all cases of fatigue tests.

show abstract

Section: Materials and Experimental Proceduresmentioning

confidence: 99%

Strength evolution of cyclic loaded LSI-based C/C-SiC composites

Xiao

et al. 2016

Ceramics International

View full text Add to dashboard Cite

show abstract

“…However, temperature and oxidation may affect the hysteresis loss energy and then the interface frictional coefficient degradation during fatigue loading at elevated temperatures. Fantozzi et al 17,32 investigated the hysteresis loss energy evolution of 2D-SiC/SiC at 600 C, 800 C, and 1000 C under inert atmosphere during fatigue loading. The hysteresis loops corresponding to interface partially debonding, fiber partially sliding relative to matrix in the interface debonding region and the hysteresis loss energy increases during fatigue loading.…”

Section: Experimental Comparisonsmentioning

confidence: 99%

“…The interface shear stress during fatigue loading can be estimated by comparing the experimental hysteresis loss energy with the theoretical computational values. 17 Cho et al 18 first developed an approach to estimate the interface frictional shear stress in fiber reinforced ceramics from frictional heating measurements. Solti et al 19 proposed a means of inferring the state of the interface through comparison of experiment and theoretical hysteresis loss energy on a cycle by cycle base.…”

Section: Introductionmentioning

confidence: 99%

Estimate interface frictional coefficient of ceramic matrix composites from hysteresis loops

Song

2010

Journal of Composite Materials

View full text Add to dashboard Cite

An approach to estimate fiber/matrix interface frictional coefficient of ceramic matrix composites under fatigue loading is developed by means of hysteresis loops. The Coulomb friction law is adopted to describe the interface shear stress in the debonded region. The matrix crack space and interface debonded length are obtained by matrix statistical cracking model and fracture mechanics interface debonding criterion. The hysteresis loops of four different cases are derived based on the damage mechanisms of fiber sliding relative to matrix in the debonded region during unloading and subsequent reloading. The hysteresis loss energy corresponding to different cycle is formulated in terms of interface frictional coefficient. By comparing the experimental hysteresis loss energy with computational values, the interface frictional coefficient of three different ceramic matrix composites under fatigue loading is derived.

show abstract

“…5 Upon fatigue loading, stress-strain hysteresis develops due to the frictional sliding which occurs along any debonded region. [6][7][8][9] Kotil et al 10 first performed an investigation on the effect of interface shear stress on the shape and area of hysteresis loops. Pryce and Smith 11 investigated the hysteresis loops when the interface partially debonded based on the assumption of purely frictional load transfer between the fiber and matrix.…”

Section: Introductionmentioning

confidence: 99%

Influence of fiber failure on fatigue hysteresis loops of ceramic matrix composites

Song

2010

Journal of Reinforced Plastics and Composites

View full text Add to dashboard Cite

An analytical methodology has been developed to investigate the influence of fiber failure on fatigue hysteresis loops of ceramic matrix composites in this article. During fatigue loading, matrix cracking, interface debonding and fiber failure occur upon first loading to the fatigue maximum stress. Matrix cracking space and interface debonding length are obtained by matrix statistical cracking model and fracture mechanics interface debonding criterion. Based on the assumption of global load-sharing criterion for the load distribution between the unbroken and broken fibers, an approach to determine fiber failure probability during fatigue loading for the degradation of interface shear stress and fiber strength is developed in this analysis. Upon unloading and subsequent reloading, stress-strain hysteresis loops develop as fiber sliding relative to matrix in the interface debonded region. The unloading interface counter slip length and reloading new slip length are obtained by the fracture mechanics interface debonding criterion. The effects of characteristic fiber strength, fiber Weibull modulus, and fatigue maximum stress on fiber failure during fatigue loading, and then on the shape, location, and area of the fatigue hysteresis loops are investigated. The fatigue hysteresis loops of three different ceramic composites corresponding to different cycles are predicted and agree well with the experimental data.

show abstract

Mechanical hysteresis in ceramic matrix composites

Cited by 136 publications

References 13 publications

Strength evolution of cyclic loaded LSI-based C/C-SiC composites

Strength evolution of cyclic loaded LSI-based C/C-SiC composites

Estimate interface frictional coefficient of ceramic matrix composites from hysteresis loops

Influence of fiber failure on fatigue hysteresis loops of ceramic matrix composites

Contact Info

Product

Resources

About