Instrumented End Notched Flexure – Crack propagation and process zone monitoring. Part I: Modelling and analysis

Analysis of the three-point bending, End Notched Flexure (ENF), test is presented for exploitation with a new experimental methodology using the backface strain monitoring technique. The model consists of two Timoshenko beams joined with a two parameter elastic foundation, to evaluate stress and str...

Full description

Saved in:
Bibliographic Details
Published in:International journal of solids and structures 2013-01, Vol.50 (2), p.297-309
Main Authors: Jumel, J., Budzik, M.K., Ben Salem, N., Shanahan, M.E.R.
Format: Article
Language:English
Subjects:
Bonded joints
Crack propagation
End Notched Flexure
Energy release rate
Flexing
Fracture mechanics
Mode II
Monitoring
Shear
Strain
Strain gauges
Timoshenko beams
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Analysis of the three-point bending, End Notched Flexure (ENF), test is presented for exploitation with a new experimental methodology using the backface strain monitoring technique. The model consists of two Timoshenko beams joined with a two parameter elastic foundation, to evaluate stress and strain fields in both adherends and the adhesive layer, together with the specimen compliance and energy release rate. This model is compared to a simplified case, from which a comprehensive experimental method is proposed for precise monitoring of crack propagation and measurement of interface shear compliance during the ENF experiment. In addition, simple formulae are proposed for evaluating mode II energy release rate, and possible experimental artefacts due to asymmetric loading conditions are evidenced.
ISSN:0020-7683
1879-2146
DOI:10.1016/j.ijsolstr.2012.08.028