Venegas et al 2017a - Revision history

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Scipediacontent at 13:15, 29 April 2022

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Scipediacontent: Scipediacontent moved page Draft Content 327384478 to Venegas et al 2017a

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Scipediacontent moved page Draft Content 327384478 to Venegas et al 2017a

Scipediacontent: Created page with "== Abstract == An experimental procedure has been developed to characterize the interlaminar resistance of composite materials, specifically prepregs of vinylester-epoxy natu..."

2022-03-31T12:56:26Z

Created page with "== Abstract == An experimental procedure has been developed to characterize the interlaminar resistance of composite materials, specifically prepregs of vinylester-epoxy natu..."

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== Abstract ==

An experimental procedure has been developed to characterize the interlaminar resistance of composite materials, specifically prepregs of vinylester-epoxy nature, based on the determination of their critical energy by the realization of consecutive low energy impacts on test specimens of the studied material.The impact sequence was performed by means of a certified impactor, based on a pendulum system, and the system used to measure the integrity of the material after each impact consisted in the NDT optical pulsed thermographic technique. In the present study, a series of 8 specimens made of unidirectional glass fiber with different arrangements and specific treatments, both on the reinforcement and the resin matrix itself, were used to carry out its characterization, as it is an asymmetric fabric based on a surface of continuous fibers and the other surface with glass veil finish. The NDT technique used has enabled, on the one hand, to quickly and efficiently identify the breakage of the materials and to determine the critical energy, and on the other hand, it has made possible to precisely measure the area of the delaminated zones and to determine their localization in depth through the graphic representation by means of projection in RGB channels.The results obtained in the characterization using the proposed procedure have been validated with fracture energy tests in mode I and II, obtaining satisfactory levels of correlation between both procedures.

== Full document ==
<pdf>Media:Draft_Content_327384478native-articles-47.pdf</pdf>

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-<span style="text-align: center; font-size: 75%;">'''Tabla 1.'''</span> <span style="text-align: center; font-size: 75%;">Arquitectura de los Composites ensayados</span>
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-'''Figura 6. '''Resultado de inspección TI previamente al inicio de la delaminación (izquierda) e inmediatamente posterior al origen de la delaminación (derecha).
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 Una vez determinada la energía crítica de cada material ensayado se continuó con el resto de fases programas en la secuencia de ensayos, aplicándose nuevos impactos sobre cada probeta con energía subcrítica, definida en este caso como la mitad de la energía crítica, y con energía supercrítica, considerada en este caso como cinco veces el valor de la energía crítica.
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-'''Figura 7.''' Representación RGB de resultados termográficos obtenidos tras la secuencia completa de impactos para dos probetas diferentes.
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 En esta ocasión la delaminación presenta también una geometría elíptica pero su tamaño es mayor que las detectadas en capas más superficiales y su eje mayor es horizontal.
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-<span style="text-align: center; font-size: 75%;">'''Figura. 8.'''</span> Áreas delaminadas en probetas ensayadas.</div>
+<span style="text-align: center; font-size: 75%;">'''Figura. 8.''' Áreas delaminadas en probetas ensayadas.</span></div>
 ==5 Conclusiones==

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