Mitigating the weak impact response of thin-ply based thin laminates through an unsymmetrical laminate design incorporating intermediate grade plies
Artikel i vetenskaplig tidskrift, 2019

With aeronautic industries focussing on thinner structures and reducing manufacturing costs, recent research has been dedicated to the impact and post impact response of thin laminates (<2 mm) made of textile fabric composites. A recent study revealed that thin laminates based on thin plies exhibit extensive fibre failure and a reduced compression after impact strength. To mitigate this weakness, we propose a novel laminate concept based on combining plies of different thicknesses in an unsymmetrical configuration (intermediate grade plies are located only at the bottom of the laminate, i.e., the non-impacted face). C-scan inspection on impacted and quasi-statically indented specimens, allowed the damage sequence of the proposed unsymmetrical hybrid laminate to be compared with that of the thin-ply baseline. The hybrid laminate with intermediate plies at the bottom, delayed and reduced the fibre damage, decreased the projected delamination area and led to a 30% increase in the compression after impact strength in contrast to the thin-ply baseline laminate.

Non-crimp fabrics

Unsymmetrical laminates

Hybrid laminates

Impact behaviour

Damage tolerance

Författare

Peter Linde

Chalmers, Industri- och materialvetenskap, Material- och beräkningsmekanik

Airbus Operations, Hamburg

D. Trias

Universitat de Girona

A. Sasikumar

Universitat de Girona

J. Costa

Universitat de Girona

V. Singery

Chomarat

Composite Structures

0263-8223 (ISSN)

Vol. 220 93-104

SORCERER

Europeiska kommissionen (Horisont 2020), 2017-02-01 -- 2020-02-28.

Ämneskategorier

Pappers-, massa- och fiberteknik

Textil-, gummi- och polymermaterial

Farkostteknik

Styrkeområden

Materialvetenskap

DOI

10.1016/j.compstruct.2019.03.069

Mer information

Senast uppdaterat

2019-09-18