@inproceedings{73b7259ae8e445728443f5a87bfa361e,
title = "Limitations of linear elastic bending theory applied to four point bending of unidirectional carbon fibre-epoxy",
abstract = "A theoretical and experimental study has been undertaken to investigate the validity of using linear elastic bending theory to deduce failure stresses in four point bending tests of unidirectional carbon fibre-epoxy. Stresses were found to be in error by up to 20\% from those based on bending theory due to the non-linear stress-strain response of the material in the fibre direction. There can also be errors of up to about 5\% due to the effect of large deflections on the bending moment. Effects due to axial forces, shear forces and variations in bending moment between the central rollers are small. The influence of anticlastic curvature for relatively narrow specimens and the effect of large strains are also small. Through thickness stresses have negligible effect except in the immediate vicinity of the contact with the rollers.",
author = "Wisnom, \{Michael R.\}",
year = "1990",
month = apr,
day = "4",
language = "English",
series = "Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference",
publisher = "American Institute of Aeronautics and Astronautics Inc. (AIAA)",
pages = "740--747",
booktitle = "Proc. AIAA SDM Conference",
edition = "pt 2",
note = "31st AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference. Part 3 (of 4): Structural Dynamics I ; Conference date: 02-04-1990 Through 04-04-1990",
}