Improved fracture toughness in carbon fibre epoxy composite through novel pre-preg coating method using Epoxy Terminated Butadiene Nitrile rubber

Gouda, P.S. Shivakumar; Chatterjee, Vijay; Barhai, P.K.; Jawali, Dayananda; Rahatekar, Sameer S.; Wisnom, Michael R

doi:10.1016/j.matdes.2014.05.018

Cited by 31 publications

(22 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The peak load at failure for each case was chosen as the highest load point of the linear portion of the load versus displacement plot. It is observed from the load versus deflection behavior of DCB that the load increase slightly and stay steady state as the delamination propagates, this behavior is similar to earlier studies [15,16] for FRP composites. DCB and ENF of 6 set of specimens are used with varying pre-crack lengths for mode-I and Mode II fracture tests.…”

Section: Resultssupporting

confidence: 88%

Studies on effect of pre-crack length variation on Inter-laminar fracture toughness of a Glass Epoxy laminated composite

Huddhar¹,

Desai²,

Sharanaprabhu

et al. 2016

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

Abstract. Laminates of fiber reinforced polymer composites are good in in-plane properties and inherently weak in through thickness direction. To address this through thickness properties, the inter-laminar fracture toughness (G Ic and G IIc ) of a unidirectional (UD) Glass epoxy composite laminates were subjected to Mode-I and Mode-II loadings. Experiments were conducted using Double cantilever beam (DCB) and End notch flexure (ENF) specimens with varying pre-crack lengths. Mode I energy release rate (G Ic ) were also evaluated with modified beam and modified compliance theories. The experimental results reveal that, G Ic fracture toughness increases with increasing in pre-crack length, where as in G IIc the effect of increase in pre-crack length exhibits reduced fracture toughness.

show abstract

Section: Resultssupporting

confidence: 88%

Studies on effect of pre-crack length variation on Inter-laminar fracture toughness of a Glass Epoxy laminated composite

Huddhar¹,

Desai²,

Sharanaprabhu

et al. 2016

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

show abstract

“…By using an automated draw down coating machine as illustrated in Fig.1 (draw bar wire gauges: 0.2mm, 0.5mm for DCB samples and 0.2mm, 0.5mm, 0.8mm for ENF samples)the solution was drawn across the pre-preg to produce a fine coating of ETBN rubber / THF solution in very little time as compared to dispersing rubber into epoxy by lowering the viscosity and then infusing in to mould to make the composites [5].…”

Section: Preparation Of Etbn Rubber Modified Glass Epoxy Laminatesmentioning

confidence: 99%

“…These methods work on the macro scale and each of these has its own merits and disadvantages compared to the methods developed in our previous work for CNT and rubber coating on pre-pregs which has been [4,5] extended in this paper for dispersing ETBN rubber on to the glass epoxy pre-preg system.…”

Section: Introductionmentioning

confidence: 99%

“…This is a simple, and rapid alternative method as discussed earlier to incorporate rubber in carbon fibre reinforced epoxy pre-preg system as discussed in our previous work [5], but our study was limited to mode-I and mode-II fracture toughness. This method is more efficient than the use of costly and time consuming dispersion techniques [20 -25] making it potentially scalable for large scale manufacturing.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Drawdown prepreg coating method using epoxy terminated butadiene nitrile rubber to improve fracture toughness of glass epoxy composites

Gouda

Williams

Yasaee

et al. 2015

Journal of Composite Materials

Self Cite

View full text Add to dashboard Cite

Laminates of fibre-reinforced prepreg have excellent in-plane mechanical properties, but have inadequate performance in the through thickness direction. Here, we address this issue by application of epoxy-terminated butadiene nitrile (ETBN) liquid rubber between the prepreg laminae using an automatic draw bar coating technique. Test results reveal that by adding ETBN in small quantities in the range of 9.33–61.33 g/m2, the interlaminar critical energy release rates (GIc and GIIc) are improved by up to 122% in mode-I and 49% in mode-II. Moreover, this finding is further supported by the dynamic mechanical analysis thermograms that clearly indicate that coating has not altered the Tg of ETBN-coated samples. Scanning electron microscopic analysis of fracture surfaces showed that rubber particles formed micro cavitations in the epoxy, causing localised rubber rich regions. These resin-rich regions require more energy to fracture, resulting in increased toughness of the glass epoxy prepreg systems.

show abstract

“…Various efforts have been made in order to develop recyclable and ductile composite materials [1][2][3]. One approach is to make both the fibres and the matrix using a single recyclable ductile polymer.…”

Section: Introductionmentioning

confidence: 99%

Dynamic compression response of self-reinforced poly(ethylene terephthalate) composites and corrugated sandwich cores

Schneider

Kazemahvazi

Zenkert

et al. 2015

Composites Part A: Applied Science and Manufacturing

View full text Add to dashboard Cite

A novel manufacturing route for fully recyclable corrugated sandwich structures made from self-reinforced poly(ethylene terephthalate) SrPET composites is developed. The dynamic compression properties of the SrPET material and the out-of-plane compression properties of the sandwich core structure are investigated over a strain rate range 10 -4 s -1 to 10 3 s -1 . Although the SrPET material shows limited rate dependence, the corrugated core structures show significant rate dependence mainly attributed to micro-inertial stabilisation of the core struts and increased plastic tangent stiffness of the SrPET material. The corrugated SrPET cores have similar quasi-static performance as commercial polymeric foams but the SrPET cores have superior dynamic compression properties.

show abstract

Improved fracture toughness in carbon fibre epoxy composite through novel pre-preg coating method using Epoxy Terminated Butadiene Nitrile rubber

Cited by 31 publications

References 22 publications

Studies on effect of pre-crack length variation on Inter-laminar fracture toughness of a Glass Epoxy laminated composite

Studies on effect of pre-crack length variation on Inter-laminar fracture toughness of a Glass Epoxy laminated composite

Drawdown prepreg coating method using epoxy terminated butadiene nitrile rubber to improve fracture toughness of glass epoxy composites

Dynamic compression response of self-reinforced poly(ethylene terephthalate) composites and corrugated sandwich cores

Contact Info

Product

Resources

About