A study of surface fracture in paste extrusion using signal processing

Russell, BD; Blackburn, S.; Wilson, D. I.

doi:10.1007/s10853-005-5154-y

Cited by 7 publications

(3 citation statements)

References 14 publications

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“…The air bubbles are defect initiators which cause the composites display non-isotropic strength and thus producing defects during extrusion. 16 The dilation of PVA/SPW composite pellets from extrusion die increased at higher PVA content. This is because at high loading of SPW, most of the water added has been used in the gelatinizaition process of starch granules in the composites.…”

Section: Extrusion Processing and Physicomechanical Characterizationmentioning

confidence: 98%

Properties and interactions of poly(vinyl alcohol)-sago pith waste biocomposites

Yee

Sin

Rahman

et al. 2011

Journal of Composite Materials

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In this study, blending of poly (vinyl alcohol) (PVA) and sago pith waste (SPW) was prepared by a one-step melt extrusion. The physico-mechanical, Fourier transform-infrared (FT-IR), moisture sorption, rheological, and thermal characterization were conducted. Incorporation of PVA in SPW improved the tensile modulus, whereas the tensile strength reduced. The FT-IR analysis has shown that SPW could be introduced into the PVA network via the formation of hydrogen bonds between the PVA and SPW clusters. The interaction between PVA and SPW macromolecules has shown that there is a noticeable improvement in the water sorption ability. The rheological properties revealed that the PVA/SPW composites exhibited shear-thinning behavior and the blend viscosities increased with the rise in SPW content because of its rigid structure. Thermal analysis revealed that >50 wt% of PVA could induce greater molecular interaction between the PVA and SPW.

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Section: Extrusion Processing and Physicomechanical Characterizationmentioning

confidence: 98%

Properties and interactions of poly(vinyl alcohol)-sago pith waste biocomposites

Yee

Sin

Rahman

et al. 2011

Journal of Composite Materials

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“…The agglomerates and air bubbles shown in Fig. 5(a) are defect initiators which make the paste display non-isotropic strength producing filament defects during extrusion (Pugh and Low, 1964;Russell et al, 2006).…”

Section: Paste Preparationmentioning

confidence: 99%

Fine lattice structures fabricated by extrusion freeforming: Process variables

Lee

Yang

et al. 2009

Journal of Materials Processing Technology

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“…Neural networks have also been applied for a range of materials in order to produce a good model predictor (Li and Bridgewater, 2000). In addition, some studies (Russell et al, 2003b(Russell et al, , 2006Amarasinghe and Wilson, 1998) have used signal processing for on-line analyses of ram extrusion processes.…”

Section: Introductionmentioning

confidence: 99%