scholarly journals Mechanical evaluation and failure analysis of composite laminates manufactured using automated dry fibre tape placement followed by liquid resin infusion

2021 ◽  
Vol 201 ◽  
pp. 108512
Author(s):  
Ajay Kumar Kadiyala ◽  
Alexandre Portela ◽  
Keith Devlin ◽  
Stephen Lee ◽  
Anthony O'Carroll ◽  
...  
Keyword(s):  
Failure Analysis ◽  
Composite Laminates ◽  
Resin Infusion ◽  
Liquid Resin ◽  
Liquid Resin Infusion

Assessment of Liquid Resin Infusion Impregnation Quality Using Scanning Electron Microscopy

2015 ◽  
Vol 24 (1) ◽  
pp. 096369351502400
Author(s):  
Mostefa Bourchak ◽  
Wail Harasani
Keyword(s):  
Composite Laminates ◽  
Woven Fabrics ◽  
Resin Infusion ◽  
Liquid Resin ◽  
Process Factor ◽  
Resin Impregnation ◽  
Aircraft Manufacturing ◽  
Electron Microscopes ◽  
Liquid Resin Infusion ◽  
Scanning Electron

Fibre reinforced composite materials are increasingly becoming the popular choice of materials for designers in many fields such as aircraft manufacturing. As well as the accompanying high costs, one of their main limitations is the difficulty of making shaped parts such as those of aircraft and UAVs. To overcome this problem, various composite manufacturing techniques have been developed including the vacuum resin infusion (VRI) process and its many derivatives. In this work, a cross ply glass fibre reinforced plastic (GFRP) composite laminate was manufactured using liquid resin infusion (LRI) process which is a derivative of VRI. Specimens cut from the manufactured laminate are tested under static tensile loading and then investigated for resin impregnation quality using two types of state of the art Field Emission Scanning Electron Microscopes (FESEM). Images taken showed some plies with well intralaminar (inter fibre within single ply) impregnation whereas in some locations - within mainly the internal plies - there was very little impregnation. The implication is that unidirectional (UD) laminated when stacked in a cross ply form present another LRI process factor that is not widely investigated. Consequently, infusing UD cross ply composite laminates may present more challenges compared to infusing woven fabrics which are helped by the gaps between the fibres weave and weft.

scholarly journals Liquid Resin Infusion process monitoring with superimposed Fibre Bragg Grating sensor

2012 ◽  
Vol 31 (8) ◽  
pp. 1045-1052 ◽  
Author(s):  
Emmanuel Marin ◽  
Laurent Robert ◽  
Sébastien Triollet ◽  
Youcef Ouerdane
Keyword(s):  
Process Monitoring ◽  
Bragg Grating ◽  
Fibre Bragg Grating ◽  
Resin Infusion ◽  
Liquid Resin ◽  
Fibre Bragg Grating Sensor ◽  
Bragg Grating Sensor ◽  
Liquid Resin Infusion

scholarly journals ESTUDO NUMÉRICO DE UM PROCESSO DE INFUSÃO DE RESINA PARA DIFERENTES CONFIGURAÇÕES DE UM CANAL VAZIO EM FORMA DE Y

2017 ◽  
Vol 2 (1) ◽  
Author(s):  
Carolline Aryene Schnich ◽  
Glauciléia Maria Cardoso Magalhães ◽  
Sandro Campos Amico ◽  
Luiz Alberto Oliveira Rocha ◽  
Liércio André Isoldi ◽  
...  
Keyword(s):  
Volume Of Fluid ◽  
Resin Infusion ◽  
Liquid Resin ◽  
Liquid Resin Infusion

O presente trabalho avalia numericamente o processo de Infusão de Resina Líquida (LRI- Liquid Resin Infusion) em distintas configurações de canais vazios com geometria “Y” inseridos numa placa retangular com meio poroso. O LRI consiste na injeção de uma resina polimérica em um molde fechado constituído por um meio poroso e canais vazios, que facilitam a propagação da resina por toda extensão do domínio. Destaca-se que esse processo apresenta grande aplicação na indústria automotiva, marítima e aeroespacial.  O escoamento de resina é considerado incompressível, laminar e transiente tanto no meio poroso quanto no não-poroso. O objetivo é comparar o tempo de preenchimento da resina em diferentes configurações de canais vazios em formato de “Y” e identificar a geometria que minimiza o tempo de injeção. As restrições geométricas do problema são a área da placa com o meio poroso, a espessura e comprimento total do canal vazio. O problema possui dois graus de liberdade, a razão entre os comprimentos do ramo simples e dos ramos bifurcados do canal aberto (H0/H1) e o ângulo entre os ramos bifurcados e a direção horizontal (α= 10º), que é mantido constante. As equações de conservação de massa e quantidade de movimento para a mistura resina-ar e, uma equação para o transporte de fração volumétrica de resina são resolvidas com o Método dos Volumes Finitos (FVM). A interação entre as fases é tratada com o método Volume of Fluid (VOF) e representa-se o efeito do meio poroso sobre o escoamento da resina pela força de campo dada pela lei de Darcy. Os resultados obtidos demonstraram que a variação de configuração tem alta influência no tempo de preenchimento da resina. Para o caso estudado, observou-se que a maior razão H0/H1 conduziu ao melhor desempenho do sistema, ou seja, minimizou o tempo de injeção da resina.

scholarly journals Liquid Resin Infusion Process Validation through Fiber Optic Sensor Technology

Sensors ◽  
2022 ◽  
Vol 22 (2) ◽  
pp. 508
Author(s):  
Vincenzo Romano Marrazzo ◽  
Armando Laudati ◽  
Michele Vitale ◽  
Francesco Fienga ◽  
Gianni Iagulli ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Fiber Optic Sensor ◽  
Sensor Technology ◽  
Resin Infusion ◽  
Relative Temperature ◽  
Process Validation ◽  
Liquid Resin ◽  
Fiber Optic Probes ◽  
Depth Study ◽  
Liquid Resin Infusion

In the proposed work, a fiber-optic-based sensor network was employed for the monitoring of the liquid resin infusion process. The item under test was a panel composed by a skin and four stringers, sensorized in such a way that both the temperature and the resin arrival could be monitored. The network was arranged with 18 Fiber Bragg Gratings (FBGs) working as temperature sensors and 22 fiber optic probes with a modified front-end in order to detect the resin presence. After an in-depth study to find a better solution to install the sensors without affecting the measurements, the system was investigated using a commercial Micron Optics at 0.5 Hz, with a passive split-box connected in order to be able to sense all the sensors simultaneously. The obtained results in terms of resin arrival detection at different locations and the relative temperature trend allowed us to validate an infusion process numerical model, giving us better understanding of what the actual resin flow was and the time needed to dry preform filling during the infusion process.

scholarly journals Numerical Modelling of a Composite Fuselage Manufactured by Liquid Resin Infusion

2011 ◽  
Vol 62 ◽  
pp. 49-56
Author(s):  
Adrien Perret ◽  
Sébastien Mistou ◽  
Louis Etienne Denaud ◽  
Thierry Mollé ◽  
Claudia Veyrac ◽  
...  
Keyword(s):  
High Performance ◽  
Development Program ◽  
Proof Of Concept ◽  
Finite Elements Analysis ◽  
Resin Infusion ◽  
Liquid Resin ◽  
Aircraft Fuselage ◽  
Industrial Projects ◽  
High Performance Composite ◽  
Liquid Resin Infusion

FUSCOMP (FUSelage COMPosite) is a Research & Development program which has received the label from the Aerospace Valley competitiveness cluster. It will lead to a test of a composite fuselage demonstrator manufactured by the Liquid Resin Infusion (LRI) process. LRI is based on the moulding of high performance composite parts by infusing liquid resin on dry fibers instead of prepreg fabrics. The study of this proof of concept is based on the TBM 850 airframe, a pressurized business turboprop aircraft currently produced by DAHER-SOCATA. Technical achievements will concern numerical methods and finite elements analysis to be used for the modelling of this aircraft composite fuselage structure. Actual industrial projects face composite integrated structure issues as a number of structures (stiffeners,...) are more and more integrated onto the skins of aircraft fuselage. Indeed the main benefit of LRI is to reduce assembly steps which lead to cycle time gain and thus cost reduction. In particular, infusing components and sub-components at the same time avoids riveting parts altogether. However it is necessary to validate the dimensioning of the studied composite structure.

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