Effect of stitch and biaxial yarn types on tensile, bending, and impact properties of biaxial weft-knitted composites

Demircan, Özgür; Kosui, Tatsuya; Ashibe, Shinsuke; Nakai, Asami

doi:10.1080/09243046.2013.851062

Cited by 19 publications

(23 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The strength and stiffness of the composite can be improved by reinforcing yarns. 2 The tensile properties of the BWK thermoset composites were reported by Demircan et al 3 Thermoplastic composites are being used in various industries such as automotive and wind turbines. The most important advantages of thermoplastics are their potential for rapid, low cost, and mass production of reinforced composites.…”

Section: Introductionmentioning

confidence: 95%

Tensile and bending properties of biaxial weft-knitted and cross-ply thermoplastic composites

Demircan

Ashibe

Kosui

et al. 2014

Journal of Thermoplastic Composite Materials

Self Cite

View full text Add to dashboard Cite

In this study, within the scope of experiments, two kinds of biaxial weft-knitted (BWK) fabrics with aramid (AR) and polyamide 66 (PA66) stitch fibers were used as reinforcement systems to fabricate thermoplastic composites with PA66 resin yarn. Then final composite became BWK with AR stitch yarn and cross-ply. The mechanical properties of composites were investigated by conducting tensile and three-point bending tests on specimens. In all specimens, PA66 was commingled with AR yarn. AR was used as reinforcement. In preliminary studies, AR unidirectional composites with AR/PA66 commingled fibers and with various twisting angles were produced and appropriate twisting angle was found by conducting tensile and three-point bending impact tests on specimens. Because of the higher volume fraction of the cross-ply composites, tensile and three-point bending properties of the cross-ply composite structures had higher than the BWK composites with the AR stitch yarn.

show abstract

Section: Introductionmentioning

confidence: 95%

Tensile and bending properties of biaxial weft-knitted and cross-ply thermoplastic composites

Demircan

Ashibe

Kosui

et al. 2014

Journal of Thermoplastic Composite Materials

Self Cite

View full text Add to dashboard Cite

show abstract

“…19–21 Unlike woven reinforcements, 22,23 the inserted yarns are laid straightly which could significantly improve the in-plane mechanical properties of the BWK reinforced composites. 20 Hasani et al. 24 published a detailed review on fabrication methods and mechanical performance of the BWK fabrics as a composite reinforcement.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical study on stiffness and damage of glass/epoxy biaxial weft-knitted reinforced composites

Shekarchizadeh

Nedoushan

Dastan

et al. 2020

Journal of Reinforced Plastics and Composites

View full text Add to dashboard Cite

This paper deals with investigating the tensile characteristics of biaxial weft-knitted reinforced composites in terms of stiffness, strength and failure mechanism. The biaxial weft-knitted fabric was produced on an electronic flat knitting machine by E-glass yarns and then was impregnated with epoxy resin. Using an accurate geometrical model, the composite unit cell was designed in Abaqus software’s environment. Tensile tests were simulated in different directions on the created unit cell and the stiffness was calculated. By applying the proper failure theories, the composite strength was predicted and then critical regions of the unit cell were determined. In the next step, a micromechanical approach was also applied to estimate the same tensile features. Failure theories were also applied to predict the strength and most susceptible areas for failure phenomenon in the composite unit cell. The tensile properties of the produced composites were measured and compared with outputs of the finite element and micromechanical approaches. The results showed that the meso-scale finite element analysis approach can well predict the composite strength. In contrast, the meso-scale analytical equation model was not able to predict it acceptably because this model ignores the strain concentration. Both meso-scale finite element analysis and meso-scale analytical equation approaches predicted the similar locations for the composite failure in wale and course directions.

show abstract

“…Reinforcing yarns, for example, glass fiber (GF) or aramid fiber, can be used within all yarn systems. 2 The tensile properties of the BWK thermoset composites were reported by Demircan et al 3 Nowadays, thermoplastic composites are being used in various industries such as automotive, wind turbines, and so on. The most important advantages of thermoplastics are their potential for rapid, low cost, and mass production of reinforced composites.…”

Section: Introductionmentioning

confidence: 92%

Effect of various knitting techniques on mechanical properties of biaxial weft-knitted thermoplastic composites

Demircan

Ashibe

Kosui

et al. 2014

Journal of Thermoplastic Composite Materials

Self Cite

View full text Add to dashboard Cite

Within the scope of experiments, five kinds of biaxial weft-knitted (BWK) fabrics with various knitting techniques (plain, interlock, tuck, tuck-miss, and interlock2) were used as reinforcement systems to fabricate thermoplastic composites with polypropylene (PP) resin yarn. Then, the final composite became BWK composites with various knitting types. The mechanical properties of composites were investigated by conducting tensile, three-point bending, and three-point bending impact tests on specimens. In all specimens, PP was commingled with glass yarn. Glass was used as reinforcement. Fiber volume fraction (V f ) of weft fibers of the interlock2 was the highest, and the length of straight part of loop shape was the longest in the interlock2 compared with the other four types of specimens. Because of the higher V f of the BWK composites with the interlock2, tensile, three-point bending, and three-point bending impact properties of the interlock2 was higher than the other four types (plain, interlock, tuck, and tuck-miss) of composite structures.

show abstract

Effect of stitch and biaxial yarn types on tensile, bending, and impact properties of biaxial weft-knitted composites

Cited by 19 publications

References 16 publications

Tensile and bending properties of biaxial weft-knitted and cross-ply thermoplastic composites

Tensile and bending properties of biaxial weft-knitted and cross-ply thermoplastic composites

Experimental and numerical study on stiffness and damage of glass/epoxy biaxial weft-knitted reinforced composites

Effect of various knitting techniques on mechanical properties of biaxial weft-knitted thermoplastic composites

Contact Info

Product

Resources

About