Gravity Effects of Curing Angle on Laminated Composite Structures: A Review on Novel Study

Jennise, T. T. T.; Yuhazri, M. Y.; Sihombing, Haeryip; Yahaya, Saifudin Hafiz; Nirmal, Umar; Ahmad, Muhammad Zamharir

doi:10.1155/2013/876824

Cited by 2 publications

(1 citation statement)

References 47 publications

(69 reference statements)

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“…As the infusion of the resin was to be performed against gravity, the knowledge of the arrival of resin at various heights of the tail cone was important, requiring the distribution of the sensors along the height of the tail cone. The process of infusion was performed against gravity so as to facilitate uniform coverage of the tail cone preform with resin, otherwise an infusion carried-out parallel to gravity will cause the bottom parts of the tail cone preform to saturate more with resin [49,50]. The resin infusion into the tail cone preform was monitored by Fresnel sensors which were embedded such that two sensors were located (one half-way up and the other at the top of the tail cone) in each of the four zones indicated as F1-F4 in figure 7.…”

Section: Infusion Monitoringmentioning

confidence: 99%

Production process monitoring and post-production strain measurement on a full-size carbon-fibre composite aircraft tail cone assembly using embedded optical fibre sensors

Chehura

James

Staines

et al. 2020

Meas. Sci. Technol.

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Multiplexed optical fibre sensors were embedded into a carbon-fibre-reinforced-preform during the industrial production of a full-sized, one-piece tail cone assembly for a regional jet aircraft. Optical fibre Fresnel sensors monitored both the infusion of the resin, via measurement of the refractive index-dependent attenuation in the reflected light signal, and the degree of cure of the resin, via measurement of the chemical cure reaction-dependent change in refractive index. The resin cure was also monitored by optical fibre Bragg gratings (FBGs) fabricated in high linearly birefringent optical fibre, which measured through-thickness strain development, while FBGs in standard single mode optical fibre measured longitudinal strain development. The magnitudes and profiles of the transverse and longitudinal strains developed during the curing process were consistent across different locations on the tail cone. Typical transverse and longitudinal strains, related to cure reaction-induced shrinkage, were −1500 ± 17 μϵ and −500 ± 5 μϵ, respectively. Post-production, the same embedded FBG sensors were used subsequently to monitor structural strains when the tail cone was subjected to vacuum pressure loading. The longitudinal strains measured using the embedded FBG sensors were generally in good agreement with the longitudinal strains measured by the surface-bonded resistance foil strain gauge (RFSG) sensors, both qualitatively and quantitatively. The in-plane transverse and circumferential strains, oriented collinearly, were measured by the embedded FBGs and appropriately oriented surface-bonded RFSG sensors, respectively, and were, qualitatively, in good agreement.

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Section: Infusion Monitoringmentioning

confidence: 99%

Production process monitoring and post-production strain measurement on a full-size carbon-fibre composite aircraft tail cone assembly using embedded optical fibre sensors

Chehura

James

Staines

et al. 2020

Meas. Sci. Technol.

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The Effect of Cutting Temperature on Carbide Drilling Life in the Process of CFRP/Steel Stacks Drilling

Kolesnyk¹,

Kryvoruchko²,

Hatala³

et al. 2015

Manufacturing Technology

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The fiber reinforced plastic (CFRP) are widely used in stacks with metallic materials. The parts are usually bolted together during assembling procedure. That is why drilling is one of the most widely used operations for machining of CFRP/metal and metal/CFRP stacks. That allows to obtain components, which combine high strength and low weight. This paper presents tool wear study based on the drilling experiment of CFRP/ steel stack. The most common problems of CFRP/metal stacks machining are CFRP delamination, fiber pull -out, thermal degradation and intensive tool wear. Last decade such parameters of CFRP/metal stacks drilling as axial force and torque are in the focus of researches. However, the cutting temperature in the drilling process of CFRP/metal stack and its influence on drill bit wear is still not fully gained at the present time. The purpose of current study is to investigate the effect of cutting temperature on the tool life of carbide drill. The temperature was measured with K type thermocouple which was embedded on the flank surface of the drill. Axial force was measured with dynamometer. Data of cutting temperature and axial force was digitalized with analog -digital converter (ACD) and visualized on personal computer (PC). The dominating tool wear mode when drilling CFRP/steel -was flank wear which was measured with optical microscope. The experimental study of cutting temperature effect on the tool wear of carbide drill was established. It was found that the most unfavourable combination of stack materials in the conditions of drill wear is CFRP/metal.

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Gravity Effects of Curing Angle on Laminated Composite Structures: A Review on Novel Study

Cited by 2 publications

References 47 publications

Production process monitoring and post-production strain measurement on a full-size carbon-fibre composite aircraft tail cone assembly using embedded optical fibre sensors

Production process monitoring and post-production strain measurement on a full-size carbon-fibre composite aircraft tail cone assembly using embedded optical fibre sensors

The Effect of Cutting Temperature on Carbide Drilling Life in the Process of CFRP/Steel Stacks Drilling

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