THE TRANSITION FROM OUT-OF-PLANE TO IN-PLANE KINKING DUE TO OFF-AXIS LOADING
Paper i proceeding, 2018



A comprehensive test campaign has been performed on coupon level to gain fundamental understanding of compressive failure in unidirectional NCF composites for aerospace applications. A subset of this study is focusing on the effect of off-axis loading, where a number of laminates have been tested with fibres oriented in off-axis angles in the interval 0-20° in steps of 5°. Our hypothesis is that 0° laminates fail by kinking out-of-plane and as the off-axis angle is increased, there is a shift to in-plane kinking as the in-plane shear component increases. The contribution from this shear component on kinking will have little effect on the compressive strength until in-plane kinking becomes "dominant" over out-of-plane kinking. Preliminary results indicate a transition from out-of-plane to in-plane governed kinking to occur at an off-axis angle between 10° and 15°.

Kinking

Compression

NCF

Off-axis

Författare

Dennis Wilhelmsson

Chalmers, Industri- och materialvetenskap, Material- och beräkningsmekanik

Edgren Fredrik

Organisation okänd

Renaud Gutkin

Chalmers, Industri- och materialvetenskap, Material- och beräkningsmekanik

Leif Asp

Chalmers, Industri- och materialvetenskap, Material- och beräkningsmekanik

18th Conference on Composite Materials
Athens, ,

Dimensioneringsmetodik för tryckbelastad NCF komposit (KOMPRESS II)

VINNOVA, 2017-11-10 -- 2019-12-31.

Kompressionsbrott i komplexa NCF kompositstrukturer - KOMPRESS

VINNOVA, 2013-09-01 -- 2017-06-30.

Ämneskategorier

Trävetenskap

Teknisk mekanik

Kompositmaterial och -teknik

Styrkeområden

Transport

Materialvetenskap

Infrastruktur

C3SE (Chalmers Centre for Computational Science and Engineering)

Mer information

Skapat

2018-06-29