High temperature fatigue of carbon/polyimide 8-harness satin woven composites. Part I: Digital Image Correlation and Micro-Computed Tomography damage characterization

Pannier, Yannick; Foti, Federico; Gigliotti, Marco

doi:10.1016/j.compstruct.2020.112255

Cited by 14 publications

(10 citation statements)

References 44 publications

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“…3D rendering of fatigue damage with different types of cracks after (a) 60%, (b) 75%, and (c) 90% of the ultimate life was shown in Figure 42. Besides, in situ high temperature fatigue experiment (Traction-traction (R = 0.1) fatigue tests at 250°C) had been carried out by Pannier et al 99 For the used samples, intra-tow matrix cracks along fibers on the external plies were the first damage form at the ply-scale. It also proved environmentally assisted fatigue tests on composite materials are feasible.…”

Section: Mechanical Properties Of the Fiber Reinforced Compositesmentioning

confidence: 99%

“…[93][94] In recent year, a large number of researchers have focused on failure research of fiber reinforced composites based on lab and synchrotron X-ray sources by in situ or ex situ experiments. [95][96][97][98][99][100][101] Especially, the high brightness associated with synchrotron radiation μ-CT (SR μ-CT) enables the rapid acquisition of successive high spatial resolution 3D images to track crack propagation or damage accumulation under monotonic, or cyclic, loads using time-lapse 3D imaging. 102 Besides, the properties of materials could be degraded or damaged under service conditions, such as moisture, 103 low or high temperature, [104][105][106] oxygen, 107-108 irradiation 109 and so on.…”

Section: Introductionmentioning

confidence: 99%

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A review of applications of CT imaging on fiber reinforced composites

Gao

Xin

et al. 2021

Journal of Composite Materials

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With the development of X-ray computed tomography over the last few decades, it is gradually considered to be a powerful tool in the field of materials research. This paper presents a comprehensive review of applications of CT imaging on fiber reinforced composites, from polymer composites to ceramic matrix composites. The principle of X-ray CT and experimental tomography setups was described firstly. Then, in situ experimental devices developed in recent years were illustrated. Furthermore, the applications of X-ray CT imaging on manufacturing process, modeling, mechanical damage, physical, and chemical behaviors were reviewed in detail. Besides, advantages and limitations of X-ray CT imaging were pointed out and the future development was prospected.

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Section: Mechanical Properties Of the Fiber Reinforced Compositesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A review of applications of CT imaging on fiber reinforced composites

Gao

Xin

et al. 2021

Journal of Composite Materials

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“…The plastic sleeper is manufactured and supplied by Replas plastic recycling company in Melbourne, Victoria, Australia, and it is made of post-consumer recycled plastics with fillers. The DIC method is a versatile and effective non-contact full-field technique of measurement that has been employed in various polymer composite research [54][55][56][57]. Sui et al (2018) [58] indicated that DIC technology is an accurate way of measuring full deflection profiles of beams under flexural bending.…”

Section: Sleeper Properties and Preparation For Dic Measurementsmentioning

confidence: 99%

Novel Bending Test Method for Polymer Railway Sleeper Materials

et al. 2021

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Alternative sleeper technologies have been developed to address the significant need for the replacement of deteriorating timber railway sleepers. The review of the literature indicates that the railway sleepers might fail while in service, despite passing the evaluation tests of the current composite sleeper standards which indicated that these tests do not represent in situ sleeper on ballast. In this research, a new five-point bending test is developed to evaluate the flexural behaviour of timber replacement sleeper technologies supported by ballast. Due to the simplicity, acceptance level of evaluation accuracy and the lack of in-service behaviour of alternative sleepers, this new testing method is justified with the bending behaviour according to the Beam on Elastic Foundation theory. Three timber replacement sleeper technologies—plastic, synthetic composites and low-profile prestressed concrete sleepers in addition to timber sleepers—were tested under service loading condition to evaluate the suitability of the new test method. To address the differences in the bending of the sleepers due to their different modulus of elasticities, the most appropriate material for the middle support was also determined. Analytical equations of the bending moments with and without middle support settlement were also developed. The results showed that the five-point static bending test could induce the positive and negative bending moments experienced by railway sleepers under a train wheel load. It was also found that with the proposed testing spans, steel-EPDM rubber is the most suitable configuration for low bending modulus sleepers such as plastic, steel-neoprene for medium modulus polymer sleepers and steel-steel for very high modulus sleepers such as concrete. Finally, the proposed bending moment equations can precisely predict the flexural behaviour of alternative sleepers under the five-point bending test.

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“…The elastic and damage laws have been tested and validated for balanced woven carbon/epoxy plies in static [ 76 , 78 ] and extended for fatigue loads [ 75 , 76 ]. The proposed simplified model of using two equivalent UD plies to model the behaviour of a woven ply has been used recently by other authors [ 79 , 80 , 81 ].…”

Section: Damage Model For Woven Ply Laminatesmentioning

confidence: 99%

Textile Composite Damage Analysis Taking into Account the Forming Process

et al. 2020

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The internal structure of composite materials is modified during manufacturing. The formation of woven prepregs or dry preforms changes the angle between the warp and weft yarns. The damage behaviour of the consolidated composite is modified by these changes of angle. It is important when designing a composite part to consider this modification when calculating the damage in order to achieve a correct dimensioning. In this paper, a damage calculation approach of the consolidated textile composite that takes into account the change in orientation of the yarns due to forming is proposed. The angles after forming are determined by a simulation of the draping based on a hypoelastic behaviour of the woven fabric reinforcement. Two orthogonal frames based on the warp and weft directions of the textile reinforcement are used for the objective integration of stresses. Damage analysis of the cured woven composite with non-perpendicular warp and weft directions is achieved by replacing it with two equivalent Unidirectional (UD) plies representing the yarn directions. For each ply, a model based on Continuum Damage Mechanics (CDM) describes the progressive damage. Two examples are presented, a bias extension specimen and the hemispherical forming coupon. In both cases, the angles between the warp and weft yarns are changed. It is shown that the damage calculated by taking into account these angle changes is greatly modified.

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High temperature fatigue of carbon/polyimide 8-harness satin woven composites. Part I: Digital Image Correlation and Micro-Computed Tomography damage characterization

Cited by 14 publications

References 44 publications

A review of applications of CT imaging on fiber reinforced composites

A review of applications of CT imaging on fiber reinforced composites

Novel Bending Test Method for Polymer Railway Sleeper Materials

Textile Composite Damage Analysis Taking into Account the Forming Process

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