Compressive strength assessment of fibre composites based on a defect severity model
Artikel i vetenskaplig tidskrift, 2019

This paper presents a defect severity concept for characterising fibre misalignments commonly found in practical composites. Drawing an analogy with brittle fracture from sharp defects, we show that compressive failure is governed by regions with clusters of misaligned fibres and that failure occurs from a critical region most favourable to initiating a kink-band. Based on a large database of measured fibre misalignments, a defect severity model is proposed. The initiation and progression of kink-bands are also analysed using a finite element model.

Författare

Dennis Wilhelmsson

Chalmers, Industri- och materialvetenskap, Material- och beräkningsmekanik

Ramesh Tareja

Texas A&M University

Renaud Gutkin

Volvo Cars

Leif Asp

Chalmers, Industri- och materialvetenskap, Material- och beräkningsmekanik

Composites Science and Technology

0266-3538 (ISSN)

Vol. 181 107685

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.

Drivkrafter

Hållbar utveckling

Innovation och entreprenörskap

Styrkeområden

Transport

Materialvetenskap

Ämneskategorier

Teknisk mekanik

Farkostteknik

Kompositmaterial och -teknik

Infrastruktur

C3SE (Chalmers Centre for Computational Science and Engineering)

DOI

10.1016/j.compscitech.2019.107685

Mer information

Senast uppdaterat

2019-07-16