Xiaojing Gong
University of Toulouse
Composite numberLow frequencyResonanceMode (statistics)Composite materialEpoxyAmplitudeWork (physics)Materials scienceGrowth rateConstant (mathematics)Characterization (materials science)Load ratioFatigue crack propagationStrain energy release rateVibration fatigueFracture mechanicsStructural engineeringParis' lawDelaminationFracture toughness
6Publications
1H-index
4Citations
Publications 6
Newest
#1Ruodi Jia (University of Toulouse)
#2Libin Zhao (Beihang University)H-Index: 21
Last. Xiaojing Gong (University of Toulouse)H-Index: 1
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Abstract Strain energy release rate (SERR) along a linear crack front of a multidirectional composite DCB specimen shows an obviously non-uniform distribution, which causes the fracture toughness GIavg measured by experiments smaller than the real GIC, and so leading to a lower estimation of fracture toughness. In this study, based on the numerical model a novel semi-empirical closed-form formula was proposed for determination of pure mode I fracture toughness of a multidirectional composite DCB...
Source
#1G. Androuin (University of Toulouse)H-Index: 1
#2Laurent Michel (University of Toulouse)H-Index: 9
Last. Xiaojing Gong (University of Toulouse)H-Index: 1
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The study of fatigue delamination growth in composite materials aims to develop a slow-growth approach for composite materials that would provide conservative and reliable results. The present work focuses on the study of the load ratio effect on fatigue crack growth at constant amplitude and on the effect of variable amplitude loading on crack propagation. With this in mind, a Crack Driving Force (CDF) is chosen to attempt to overlap delamination growth curves obtained from different load ratio...
4 CitationsSource
#1G. AndrouinH-Index: 1
#2Laurent MichelH-Index: 13
Last. Xiaojing GongH-Index: 1
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#1G. AndrouinH-Index: 1
#2I. MailletH-Index: 3
Last. Xiaojing GongH-Index: 1
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#1G. AndrouinH-Index: 1
Last. I. MailletH-Index: 3
view all 4 authors...
Mode II crack propagation tests were conducted at high frequencies on carbon fiber/epoxy laminates under vibration fatigue at resonance. In parallel, classical fatigue tests were carried out at 10Hz on a servo-hydraulic machine in order to compare results in terms of Fatigue Crack Growth Rate (FCGR) vs Energy Release Rate (ERR) curves. Different load ratios were considered for classical tests. Frequency and load ratio effects were determined from both high and low frequency tests results. Using ...
#1G. AndrouinH-Index: 1
Last. I. MailletH-Index: 3
view all 4 authors...
Load ratio effect on fatigue crack propagation is explored on a carbon/epoxy composite material. The fatigue load could be better represented by their amplitude instead of their maximum value. Cumulative damage is then investigated by achieving consecutive fatigue tests on the same specimen. Consequences on the crack growth rate are highlighted. It is shown that the fatigue pre-crack length, as well as the building method of the fatigue pre-crack plays an important role in the fatigue crack prop...