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

Off-axis

Compression

NCF

Författare

Dennis Wilhelmsson

Chalmers, Industri- och materialvetenskap, Material- och beräkningsmekanik

Edgren Fredrik

GKN Aerospace Sweden

Renaud Gutkin

Volvo Cars

Leif Asp

Chalmers, Industri- och materialvetenskap, Material- och beräkningsmekanik

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18th European Conference on Composite Materials, ECCM 2018
Athen, Greece,

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Dimensioneringsmetodik för tryckbelastad NCF komposit (KOMPRESS II)

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Ämneskategorier

Trävetenskap

Teknisk mekanik

Kompositmaterial och -teknik

Styrkeområden

Transport

Materialvetenskap

Infrastruktur

C3SE (Chalmers Centre for Computational Science and Engineering)

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Senast uppdaterat

2020-05-18