Study on the possibility of increasing the maximum allowable stresses in fibre-reinforced plastics
Artikel i vetenskaplig tidskrift, 2013

This article presents the results of a study aimed at investigating the possibility of increasing the maximum allowable stresses in fibre-reinforced plastics compared to current practice. The study consisted of a comparison between the maximum allowable stresses of a group of cross-ply laminates, determined by deterministic analyses with safety and model factors as stated in design rules, and their probabilistic responses estimated with a fracture mechanics based model that accounted for material degradation. The results suggest that for the studied cases, the maximum allowable stresses do not provide the desired reliability; thus, their increase cannot be motivated. More importantly, the investigation shows that a better understanding of the effects of matrix cracks, and therefore, the maximum allowable crack density in a composite laminate, would lead to better and safer composite structures.

safety

Cross-ply laminates

probability of failure

matrix cracking

Författare

Luis Felipe Sanchez Heres

Chalmers, Sjöfart och marin teknik, Marine Design

Jonas Ringsberg

Chalmers, Sjöfart och marin teknik, Marine Design

Journal of Composite Materials

0021-9983 (ISSN) 1530-793X (eISSN)

Vol. 47 1931-1941

Drivkrafter

Hållbar utveckling

Innovation och entreprenörskap

Styrkeområden

Transport

Energi

Materialvetenskap

Fundament

Grundläggande vetenskaper

Ämneskategorier

Farkostteknik

Sannolikhetsteori och statistik

Kompositmaterial och -teknik

DOI

10.1177/0021998312452763