Aurélien Doitrand
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View article: Towards the determination of optimal 3D initiation crack shapes
Towards the determination of optimal 3D initiation crack shapes Open
An approach is proposed to determine the optimal initiation crack shapes when using the Coupled Criterion (CC) to assess 3D debonding initiation at a fiber-matrix interface. The optimal crack shapes are determined among potential crack sha…
View article: Comparison between 2D and 3D fiber-matrix debonding simulation for inverse identification of interface fracture properties
Comparison between 2D and 3D fiber-matrix debonding simulation for inverse identification of interface fracture properties Open
Fiber-matrix debonding in single fiber specimen is studied experimentally and numerically based on the coupled criterion for which various 2D and one 3D configurations are used. Debonding initiation and propagation are mainly due to normal…
Fiber–matrix interface debonding and transverse cracking in macro fiber composites Open
International audience
View article: Open Review of "Comparison between 2D and 3D fiber-matrix debonding simulation for inverse identification of interface fracture properties"
Open Review of "Comparison between 2D and 3D fiber-matrix debonding simulation for inverse identification of interface fracture properties" Open
Open Review of article https://doi.org/10.46298/jtcam.12997 published in JTCAM
Investigation of sapphire strength across the scales Open
International audience
Review of the matched asymptotic approach of the coupled criterion Open
Matched Asymptotics is a powerful mathematical technique with broad applicability in various engineering fields. One of its key uses is in Fracture Mechanics, where it provides accurate approximations in the vicinity of the crack tip with …
Mechanisms of transverse cracking induced by adjacent ply matrix cracks in composite laminates Open
Cracking in composite laminates containing θ -plies adjacent to 90° plies is studied experimentally and numerically using the coupled criterion and finite element calculations. Different damage mechanisms are considered, namely transverse …
A review of characteristic lengths in the coupled criterion framework and advanced fracture models Open
The review paper explores the significance of characteristic lengths in fracture mechanics, focusing on the Coupled Criterion framework. It addresses limitations in traditional Linear Elastic Fracture Mechanics, which struggle to predict s…
A review of the coupled criterion Open
We provide a review of recent works about the Coupled Criterion (CC), originally developed to assess the initiation of a crack and thus overcome a main limitation of linear elastic fracture mechanics. This paper includes theoretical and im…
View article: Experimental and numerical investigation of the sensor effect on the acoustic emission during Pencil-lead Break tests on PMMA plates
Experimental and numerical investigation of the sensor effect on the acoustic emission during Pencil-lead Break tests on PMMA plates Open
Pencil leads are broken on PMMA plates at various source-sensor distances to evaluate the influence of the propagation distance and the sensor type on AE signals. The resulting waves are detected using a broadband or a resonant sensor. The…
View article: Acoustic Emission simulation: assessing the influence of AE source modeling and addressing the issue of dimensionality in the propagation medium
Acoustic Emission simulation: assessing the influence of AE source modeling and addressing the issue of dimensionality in the propagation medium Open
A thorough understanding of simulating Acoustic Emission (AE) requires the source modeling and propagation medium to be considered respectively. Crack initiation and propagation simulation as an AE source can be performed by the Successive…
Simultaneous Measurement of Fiber-Matrix Interface Debonding and Tunneling Using a Dual-Vision Experimental Setup Open
Background Fiber-matrix debonding is a precursor for transverse cracking and several other types of damage in fiber composites. However, to date, there are limited experiment-based reports that study the fundamental mechanisms of fiber-mat…
Understanding regularized crack initiation through the lens of Finite Fracture Mechanics Open
The nucleation of a regularized crack at a V-notch is studied using the coupled criterion through matched asymptotic expansions. The process zone around the crack is described by crack regularization usually employed in phase-field models.…
V-notch crack initiation by the coupled criterion considering plasticity Open
An extension of the coupled criterion (CC) of finite fracture mechanics is proposed in order to assess brittle crack initiation considering plasticity. The main change compared to the classical linear elastic approach consists in consideri…
View article: Influence of the node release methods on the acoustic emission signals due to crack initiation
Influence of the node release methods on the acoustic emission signals due to crack initiation Open
National audience
Failure assessment of eccentric circular holes under compressive loading Open
The present work aims to investigate the failure size effect on flattened disks containing an eccentric circular hole under mode I loading conditions. For this purpose, uniaxial compression tests are carried out on polymethyl methacrylate …
View article: Reduction in the Sensor Effect on Acoustic Emission Data to Create a Generalizable Library by Data Merging
Reduction in the Sensor Effect on Acoustic Emission Data to Create a Generalizable Library by Data Merging Open
The aim of this paper is to discuss the effect of the sensor on the acoustic emission (AE) signature and to develop a methodology to reduce the sensor effect. Pencil leads are broken on PMMA plates at different source–sensor distances, and…
Influence of debonding and substrate plasticity on thin film multicracking Open
International audience