Numerical and experimental determination of in-plane elastic properties of 2/2 twill weave fabric composites

Assessment of the mechanical properties of a new 3D woven fibre composite material

“…Poisson's ratio of the NC-0 and Twill materials could be due to transverse fibres which prevent lateral contraction, similar to observations made by Ng et al [8]. The measured Poisson's ratio of the Twill laminate corresponds very well with the experimental and numerical data presented in [8].…”

“…The measured Poisson's ratio of the Twill laminate corresponds very well with the experimental and numerical data presented in [8]. It was not possible to measure the strains in the 3-direction because they were too small to detect, and consequently no out-of-plane Poisson's ratios were possible to obtain.…”

“…The recommended specimen thickness according to the ASTM D3039 standard is 2.5 mm, but the thickness of the Twill specimens was only 2.2 mm. However, it has been shown in experimental work by Sun Piu Ng et al [8] that a thickness of 1.31 mm is sufficient for 2x2 twill when using the ASTM 3039 standard.…”

Carbon/Epoxy Woven Composite Experimental and Numerical Simulation to Predict Tensile Performance

“…In addition, the properties in the warp direction of the woven composite laminate are symmetric to the fill direction properties, and similar for shear and passion's ratio. Furthermore, the results exhibited appropriate elastic properties when compared with other approaches used by [21][22][23][24] for carbon/epoxy. …”

Mechanical Analysis of Woven Fabrics:The State of the Art

“…The homogenized elastic properties of the unit cell results from the mesomechanical analysis using FEM. A relative approach proposed by Ng et al (Ng et al, 1998) has ben applied for the prediction of the inplane elastic properties of a single layer 2/2 twill weave fabric composite. The compressed hexagonal shape was considered for the tow cross-section.…”