Unsaturated polyester/E-glass fiber composites made by vacuum assisted compression resin transfer molding

Chang, Chih-Yuan; Lin, Hung-Jie

doi:10.1515/polyeng-2012-0071

Cited by 8 publications

(3 citation statements)

References 13 publications

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“…Literatürde, vakum destekli RTM çalışmaları [22], RTM'de vakum ve enjeksiyon debisi gibi proses parametrelerinin kompozit levhanın mekanik özelliklere etkisi [23], RTM prosesinde farklı parametreler kullanılarak iyi ıslanma ve ıslanma zamanını azaltma [24], RTM'de vakumun ve vakum noktalarının kompozit levhanın mekanik özelliklerine etkisi [25], [26] ve vakum destekli RTM ile üretilen kompozitlerde hava boşluğu içeriği [27] gibi deneysel çalışmalar yapılmıştır. Bu çalışmada ise, Şekil 3'te görülen laboratuvar ölçekli, bilgisayar kontrollü, ısıtmalı ve vakum destekli RTM prosesi kurulmuştur.…”

Section: Vakum Destekli Rtm Prosesiunclassified

Effects of glass-mat on mechanical anisotropy in bidirectional e-glass woven roving reinforced composite sheets produced by RTM method

Sakin¹

2017

Pamukkale J Eng Sci

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GirişCam dokuma tipi fiber takviyeler, E-camı elyafından tek uçlu fiberlerin dokunması ile elde edilen iki-yönlü düz kumaşlardır. Cam dokumalar, kalıba çok kolay yatma, çabuk ıslanma, düşük reçine tüketimi ve özellikle 0°/90° fiber yönlerinde yüksek mekanik özelliklere sahiptir. Bu özellikleri sayesinde geniş bir kullanım alanına sahip, silan esaslı bağlayıcı ile kaplanmış olup doymamış polyester, vinilester ve epoksi reçine ile uyumludur. Cam dokumalar, depolama tankları, yatlar, gemiler, otomobil parçaları, mobilya ve spor aletleri gibi ürünlerin el-yatırması, kalıplama ve mekanize yöntemlerinde çok sık kullanılır.

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Section: Vakum Destekli Rtm Prosesiunclassified

Effects of glass-mat on mechanical anisotropy in bidirectional e-glass woven roving reinforced composite sheets produced by RTM method

Sakin¹

2017

Pamukkale J Eng Sci

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“…31, 32 The feasibility of the VACRTM was verified by Chang and Lin. 34 A Quickstep process was designed and developed in Australia. It is an out of autoclave polymer composite curing technology that uses a heat transfer fluid to precisely control heat and pressure on the uncured component during processing.…”

Section: Introductionmentioning

confidence: 99%

Simulation of non-isothermal filling process in vacuum assisted compression resin transfer moulding process

Chang

2015

Plastics, Rubber and Composites

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A non-isothermal filling process of vacuum assisted compression resin transfer moulding (VACRTM) has been developed to reduce cyclic period in this study. In VACRTM, the state of the fabric stack is controllable by stretchable film. During infusion, the resin is isothermally infused into the loose fabrics. After that, a hot fluid with high pressure is applied on the film to heat the resin and compact the preform. A one-dimensional flow and two-dimensional heat transfer model coupled with preform deformation is numerically analysed to investigate the influences of various scenarios on the non-isothermal filling process. Results show that the effects of pressure and temperature distributions at the onset of compression stage are transitional. The main mode of heat transfer is conduction in the thickness direction. Through evaluation of various scenarios, a preferable method is proposed by integrating the concept of fully wetted preform, less excess resin, hot compression and two-sided drainage.

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“…Chang 23 proposed the vacuum-assisted CRTM (VACRTM) process which was similar to FFC method. Chang and Lin 24 discussed the effects of process variables on the flexural strength of VACRTM part. Some modified methods focused on improving process control and laminate quality.…”

Section: Introductionmentioning

confidence: 99%

Effect of process parameters on the surface quality of air cushion method

Chang

2015

Journal of Reinforced Plastics and Composites

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A new method of the vacuum-assisted resin transfer molding process, called air cushion method, has been developed to manufacture composite parts. The process utilizes additional air cushions bound into the bagging film beneath. After the preform is sealed by the bag and evacuated, distribution channels are created between air cushions to enhance resin flow during infusion. Once the resin infusion is completed, the binding interfaces between the air cushion and the bagging film are cut and distribution channels collapse. The vacuum bag entirely compacts the preform. The goal of this study is to utilize a 2 4 full factorial design to evaluate the effects of process variables, including the number of the air cushion (factor A), thickness of the air cushion (factor B), elasticity of the bagging film (factor C), and vacuum pressure in the cavity (factor D), on the surface quality of air cushion method components. Results show that the process parameters ranked in decreasing order of importance are B, D, A, and C for affecting the surface height difference. Compared with traditional vacuum-assisted resin transfer molding, air cushion method at the optimum settings reduces the infusion time by 68.4% but increases the surface height difference by 0.0312 mm.

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Unsaturated polyester/E-glass fiber composites made by vacuum assisted compression resin transfer molding

Cited by 8 publications

References 13 publications

Effects of glass-mat on mechanical anisotropy in bidirectional e-glass woven roving reinforced composite sheets produced by RTM method

Effects of glass-mat on mechanical anisotropy in bidirectional e-glass woven roving reinforced composite sheets produced by RTM method

Simulation of non-isothermal filling process in vacuum assisted compression resin transfer moulding process

Effect of process parameters on the surface quality of air cushion method

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