The high strain rate tension behaviour of pseudo-ductile high performance thin ply composites
Fotouhi, Mohammad; Fuller, Jonathan; Longana, Marco; Jalalvand, Meisam; Wisnom, Michael R.
Michael R. Wisnom
In this study the effect of strain rate in tension on two different types of thin-ply pseudo-ductile laminates is reported. These comprised Unidirectional (UD) and quasi-isotropic (QI) hybrids made from low strain thin-ply carbon/epoxy and high strain glass/epoxy prepreg and all-carbon laminates made from thin-ply [±ϴ/0]s laminates referred to as angle-ply (AP) composites. Laminates were designed and subjected to a range of cross-head speeds from 2 mm/min (0.0003 s-1) to 10 m/s (100 s-1). The designed laminates were made from single or hybrids of low strain and high strain unidirectional prepregs, i.e. thin-ply Carbon/epoxy and Glass/epoxy, respectively. Dynamic stress–strain plots and details of the damage mechanisms were obtained for each sample and compared with the quasi-static test results. The investigated thin-ply UD and QI hybrid composite laminates showed excellent pseudo-ductility at different strain rates, whereas the AP laminates were strain rate dependent and pseudo-ductility decreased with increasing strain rate.
Fotouhi, M., Fuller, J., Longana, M., Jalalvand, M., & Wisnom, M. R. (2019). The high strain rate tension behaviour of pseudo-ductile high performance thin ply composites. Composite Structures, 215, 365-376. https://doi.org/10.1016/j.compstruct.2019.02.068
|Journal Article Type||Article|
|Acceptance Date||Feb 18, 2019|
|Online Publication Date||Feb 19, 2019|
|Publication Date||May 1, 2019|
|Deposit Date||Feb 18, 2019|
|Publicly Available Date||Feb 20, 2020|
|Peer Reviewed||Peer Reviewed|
|Keywords||pseudo-ductility, hybrid, quasi-isotropic, angle-ply, high strain rate, thin-ply|
|Additional Information||Additional Information : This is the author's accepted manuscript. The final published version is available here: https://doi.org/10.1016/j.compstruct.2019.02.068|
The high strain rate tension behaviour of thin ply composites.pdf