Wrinkling Behavior of a Woven Thermoplastic Composite Material

Abstract:

This article examines the prediction of wrinkling initiation in self-reinforced thermoplastic composite materials for potential application in rapid forming of this class of materials. Whilst most of recent researches concentrate on examining metallic wrinkling behavior, this article aims to introduce a wrinkling indicator for composite sheet. The material system involved in the study is a self-reinforced polypropylene woven composite with a fiber orientation of 0°/90° along the warp and weft directions. Square specimens were stretched uniaxially along diagonal direction until the onset of wrinkling. It is observed that when the wrinkling occurs, strain increment ratio exhibits an abrupt change. This fundamental observation leads to the prediction of onset of wrinkling by using abrupt changes in strain increment ratio as a metric.

• Periodical: Materials Science Forum (Volume 893)
• Pages: 26-30
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.893.26
• Online since: March 2017
• Authors: Lu Chen, Shankar Kalyanasundaram
• Keywords: Digital Image Correlation, Strain Ratio, Thermoplastic Composite, Wrinkling

References

[1] Golzar, M. and Poorzeinolabedin, M. (2009). Prototype fabrication of a composite automobile body based on integrated structure. The International Journal of Advanced Manufacturing Technology, 49(9-12), pp.1037-1045.

DOI: 10.1007/s00170-009-2452-6

[2] Senior, B. (1956). Flange wrinkling in deep-drawing operations. Journal of the Mechanics and Physics of Solids, 4(4), pp.235-246.

DOI: 10.1016/0022-5096(56)90032-1

[3] Wang, W., Lowe, A., Davey, S., Zanjani, N. and Kalyanasundaram, S. (2015).

[4] Zanjani, N., Wang, W. and Kalyanasundaram, S. (2015). The effect of fiber orientation on the formability and failure behavior of a woven self-reinforced composite. Journal of Manufacturing Science and Engineering, 137(5): 051012-19.

DOI: 10.1115/1.4030894

[5] Zanjani, N., Sexton, A. and Kalyanasundaram, S. (2015).

[6] Wang, X. and Cao, J. (2000). On the prediction of side-wall wrinkling in sheet metal forming processes. International Journal of Mechanical Sciences, 42(12), pp.2369-2394.

DOI: 10.1016/s0020-7403(99)00078-8

[7] Kim, Y. and Son, Y. (2000). Study on wrinkling limit diagram of anisotropic sheet metals. Journal of Materials Processing Technology, 97(1-3), pp.88-94.

DOI: 10.1016/s0924-0136(99)00346-5

[8] Zanjani, N. and Kalyanasundaram, S. (2015). Wrinkling phenomenon during uniaxial extension of a woven thermoplastic composite. Advanced Composites Letters, vol 24, pp.89-97.

DOI: 10.1177/096369351502400501

[9] Yoshida, K., et al. (1981), Assessment of Fitting Behaviour and Shape Fixation by Yoshida Buckling Test: A Way to Overall Formability. International Symposium on New Aspects on Sheet Metal Forming, pp.125-150.

[10] Romhány, G., Bárány, T., Czigány, T. and Karger-Kocsis, J. (2007). Fracture and failure behavior of fabric-reinforced all-poly(propylene) composite (Curv®). Polym. Adv. Technol., 18(2), pp.90-96.

DOI: 10.1002/pat.806