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Okajima, Akiko; Kurosaka, T.; Suyari, Mamoru; Okajima, Satoshi

doi:10.1299/jsmemecjo.2003.3.0_19

Cited by 2 publications

(2 citation statements)

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“…As a result, clean carbon fiber was recovered, and the resin was decomposed and removed from the carbon fiber. 9 It can be pointed out that this solvolysis process is able to treat all types of composites, no matter their surface quality, geometry, size, density, etc. The only constraint is the reactor geometry.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

Environmental Feasibility of the Recycling of Carbon Fibers from CFRPs by Solvolysis Using Supercritical Water

Prinçaud

Aymonier

Loppinet-Serani

et al. 2014

ACS Sustainable Chem. Eng.

100

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Originally developed for high-tech applications in the aeronautic and aerospace industry, carbon/epoxy composites have been increasingly used in the automotive, leisure, and sports industries for several years. Nevertheless, the carbon reinforcement is an expensive constituent, and it has been recently shown that it is also the most environmentally impacting in a composite part manufacturing. Recycling these materials (even restricted to the reinforcement recovery) could lead to economic and environmental benefits, while satisfying legislative end-oflife requirements. The solvolysis of the matrix by water under supercritical conditions is an efficient solution to recover the carbon fiber reinforcement with mechanical properties closed to the ones of virgin fibers. This paper aims at demonstrating the environmental feasibility of the recycling of carbon fiber/thermoset matrix composites by solvolysis of the matrix in supercritical water. This demonstration is based on life cycle assessment that evaluates benefits and environmental challenges of this recycling loop.

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Section: ■ Materials and Methodsmentioning

confidence: 99%

Environmental Feasibility of the Recycling of Carbon Fibers from CFRPs by Solvolysis Using Supercritical Water

Prinçaud

Aymonier

Loppinet-Serani

et al. 2014

ACS Sustainable Chem. Eng.

100

View full text Add to dashboard Cite

show abstract

“…As the amplitude and frequency plots in Figs. [2][3][4][5][6][7][8][9][10][11][12][13] show, the upper branch at this range of Reynolds number is expanded significantly [15,16,21] and the lower branch is contracted compared to Reynolds numbers below 10,000 [22]. PTC expands the VIV upper branch to U*« 11 and initiates fully developed galloping around U*^12.…”

Section: Introductionmentioning

confidence: 99%

Multicylinder Flow-Induced Motions: Enhancement by Passive Turbulence Control at 28,000<Re<120,000

Kim

Bernitsas

Kumar

2013

Journal of Offshore Mechanics and Arctic Engineering

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The VIVACE converter was introduced at OMAE2006 as a single, smooth, circular-cylinder module. The hydrodynamics of VIVACE is being improved continuously to achieve higher density in harnessed hydrokinetic power. Intercylinder spacing and passive turbulence control (PTC) through selectively located roughness are effective tools in enhancement of flow induced motions (FIMs) under high damping for power harnessing. Single cylinders harness energy at high density even in 1 knot currents. For downstream cylinders, questions were raised on energy availability and sustainability of high-amplitude FIM. Through PTC and intercylinder spacing, strongly synergetic FIMs of 2/3/4 cylinders are achieved. Twocylinder smooth/PTC, and three/four-cylinder PTC systems are tested experimentally. Using the "PTC-to-FIM" map developed in previous work at the Marine Renewable Energy Laboratory (MRELab), PTC is applied and cylinder response is measured for inflow center-tocenter distance 2D-5D (D = diameter), transverse center-to-center distance 0. Ree[28,000], m*e[1.677-1.690], Ue[0.36-1.45 m/s], aspect ratio l/D = 10.29, and m*[, e [0.0283-0.0346]. All experiments are conducted in the low turbulence free surface water (LTFSW) channel of MRELab. Amplitude spectra and broad field-of-view (FOV) visualization help reveal complex flow structures and cylinder interference undergoing VN, interference/ proximity/wake/soft/hard galloping. FIM amplitudes of 2.2-2.8D are achieved for all cylinders in steady flow for all parameter ranges tested.

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Cited by 2 publications

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Environmental Feasibility of the Recycling of Carbon Fibers from CFRPs by Solvolysis Using Supercritical Water

Environmental Feasibility of the Recycling of Carbon Fibers from CFRPs by Solvolysis Using Supercritical Water

Multicylinder Flow-Induced Motions: Enhancement by Passive Turbulence Control at 28,000<Re<120,000

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