Dynamic mechanical and free vibration behavior of natural fiber braided fabric composite: Comparison with conventional and knitted fabric composites

2016 ◽  
Vol 39 (7) ◽  
pp. 2479-2489 ◽  
Author(s):  
M. Rajesh ◽  
Jeyaraj Pitchaimani
Keyword(s):  
Free Vibration ◽  
Natural Fiber ◽  
Knitted Fabric ◽  
Dynamic Mechanical ◽  
Vibration Behavior ◽  
Fabric Composite ◽  
Fabric Composites

scholarly journals Deep Drawing of Plain Weft-Knitted Fabric Composites: Part 1.: Cup Height Analysis

1999 ◽  
Vol 8 (6) ◽  
pp. 096369359900800 ◽  
Author(s):  
T.C. Lim ◽  
S. Ramakrishna ◽  
H.M. Shang
Keyword(s):  
Deep Drawing ◽  
Shell Height ◽  
Knitted Fabric ◽  
Fabric Structure ◽  
Weft Knitted Fabric ◽  
Fabric Composite ◽  
Fabric Composites ◽  
Good Agreement

Previous investigations on forming of plain weft-knitted fabric composite sheets show the ease of stretching due to fabric loop straightening. Pure dependence on stretching alone, however, sets the limit to which the shell height can be further increased. Recent deep drawn knitted fabric composites give greater cup height in comparison to stretch formed cup. In this paper a method of predicting the achievable cup height is proposed with due consideration to the fabric structure and tool dimensions. Comparison between the theoretical and experimental cup height shows good agreement.

scholarly journals Knitted Fabric Composite Sheet Forming Simulation considering Fabric Realignment

1999 ◽  
Vol 8 (2) ◽  
pp. 096369359900800 ◽  
Author(s):  
T.C. Lim ◽  
M. Fujihara ◽  
M. Zako ◽  
S. Ramakrishna ◽  
H.M. Shang
Keyword(s):  
Sheet Forming ◽  
Constitutive Relationship ◽  
Knitted Fabric ◽  
Composite Sheet ◽  
Reinforced Polymers ◽  
Forming Simulation ◽  
Fabric Structure ◽  
Fabric Composite ◽  
Fabric Composites ◽  
Relationship Of

In recent years, sheet forming of textile reinforced polymers have shown promising future applications. It is understood that the reorientation of fabric structure at the microscopic level alters the macroscopic constitutive relationship of the composite. In this paper, a new sheet forming simulation technique is proposed and being applied to knitted fabric composites.

scholarly journals Effect of Fibre Bundle Structure on Stretch Forming Properties of Plain Weft-Knitted Fabric Composites

1999 ◽  
Vol 8 (4) ◽  
pp. 096369359900800
Author(s):  
T.C. Lim ◽  
S. Ramakrishna ◽  
H.M. Shang
Keyword(s):  
Fibre Bundle ◽  
Knitted Fabric ◽  
Shells Of Revolution ◽  
Stretch Forming ◽  
Composite Sheet ◽  
Knitted Fabrics ◽  
Weft Knitted Fabric ◽  
Fabric Composite ◽  
Fabric Composites ◽  
Bundle Structure

Knitted fabrics are known for their excellent stretchability and their flat composites have recently been shown to be easily stretch-formed into thin shells of revolution. In this paper, the stretch-forming properties are being investigated with due attention given to the fibre bundle loop structure. The capability of a plain weft-knitted fabric composite sheet to be stretch-formed is elucidated with reference to the fibre bundle structure.

scholarly journals Stretch Forming Analysis of Knitted Fabric Composites

1999 ◽  
Vol 8 (3) ◽  
pp. 096369359900800 ◽  
Author(s):  
T.C. Lim ◽  
S. Ramakrishna ◽  
H.M. Shang
Keyword(s):  
Strain Distribution ◽  
Knitted Fabric ◽  
Stretch Forming ◽  
Composite Sheet ◽  
Fabric Composite ◽  
Polymer Sheets ◽  
Fabric Composites ◽  
Forming Analysis ◽  
Distributed Strain ◽  
Good Agreement

Recently the effects of knitted fabric reinforcement on the sheet forming of polymer sheets have been investigated, and shown to provide strength and a more distributed strain. A new method for predicting the strain distribution of a stretch formed knitted fabric composite sheet is proposed in this paper. A good agreement was observed between the predicted and the experimental results.

scholarly journals Effect of Fabric Pre-stretching on the Tensile Properties of Knitted Fabric Composites

1998 ◽  
Vol 7 (3) ◽  
pp. 096369359800700 ◽  
Author(s):  
S. Ramakrishna
Keyword(s):  
Tensile Properties ◽  
Knitted Fabric ◽  
Composite Fabrication ◽  
Specific Direction ◽  
Fabric Composite ◽  
Fabric Composites

This paper illustrates the influence of fabric pre-stretching on the tensile properties of knitted fabric composites. Prior to the composite fabrication, the fabric was stretched bi-axially in wale and course directions by different amounts. It has been shown that tensile properties of the composite in a specific direction can be improved by selectively pre-stretching the fabric more in that direction. It is also found that the equi-biaxially pre-stretched fabric composite displays marginally higher tensile properties compared to the composite reinforced with 0% pre-stretched fabric.

Experimental investigation of the tensile and bending behavior of multi-axial warp-knitted fabric composites

2016 ◽  
Vol 88 (3) ◽  
pp. 333-344 ◽  
Author(s):  
Xiaoping Gao ◽  
Danxi Li ◽  
Wei Wu ◽  
Si Chen
Keyword(s):  
Volume Fraction ◽  
Orientation Distribution ◽  
Knitted Fabric ◽  
Fiber Volume ◽  
Molding Method ◽  
Fabric Composite ◽  
Fabric Composites ◽  
Static Tensile ◽  
Bending Behavior ◽  
Warp Knitted Fabric

An experimental study was carried out on the tensile and bending behavior of multi-axial warp-knitted fabric composites. Five specimens reinforced with multi-axial warp-knitted fabric/epoxy were manufactured by a vacuum-assisted resin transfer molding method. Quasi-static tensile and three-point bending tests were carried out in a number of orientations relative to the stitching direction: quadriaxial, triaxial, biaxial (±45° and 0/90°) and unidirectional. The results of the tests revealed that the quadriaxial and biaxial (±45°) samples showed quasi-isotropic behavior, whereas the other laminates showed anisotropic behavior. The influence of fiber volume fraction and the orientation distribution of the constituent material on the tensile and bending behavior were also analyzed. The relationships between the stress and strain and the tensile and bending behavior of different multi-axial warp-knitted fabric composite were obtained by polynomial fitting.

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