A wide range of data can be obtained using current measurement techniques (e.g. full field optical measurement). This richness can be beneficial for achieving more robust parameter identification, or identifying multiple parameters with a single test [1, 2]. Both of these aspects can be seen as improving the identifiability of the target parameters...
The paper presents a full-field strain analysis of the appearance/disappearance of twinned martensite in a Cu-Al-Ni single crystal subjected to thermal cycles. Localized Spectrum Analysis (LSA) was employed to process images of a checkerboard pattern preprinted on the sample's surface, enabling us to obtain strain maps with a suitable trade-off bet...
This paper proposes an experimental approach to measure contact forces in a two-dimensional system composed of cylindrical particles using the Virtual Fields Method (VFM). This identification method relies on the knowledge of the strain distribution in the particles forming the discrete medium. Synthetic strain data provided by a finite element mod...
This paper describes a new methodology that expands the capabilities of low-frame, high-resolution stereo-camera systems in studying the dynamic behavior of components in the presence of nonlinear phenomena. A new downsampling technique called the Smoothed Harmonics Analysis (SHA) is proposed. This technique addresses the limitations due to the low...
Background: Reliably measuring sharp details in displacement and strain maps returned by full-field measurement techniques remains an open question in the photomechanics community. Objective: The primary objective of this study is to improve and finetune a deconvolution algorithm in order to limit the blur that obscures the details in displacement ...
Background: Digital Image Correlation (DIC) is an image-based measurement technique routinely used in experimental mechanics, which provides displacement and strain maps of an observed surface/volume. The metrological performance of DIC has reached its limit which is directly determined by the texture of the imaged surface/volume. Objective : This ...
Published in Journal of the mechanical behavior of biomedical materials
Silicone elastomers have been widely used for biomedical applications. A variety of hyperelastic models have been proposed to describe this type of materials in the past few decades. The assessment of the quality of the proposed models is mostly based on stress-strain data obtained from uniform deformation, but very little work has been done to inv...
The lecture aims at providing to the scientific community a synthesis of the research activities performed at the authors laboratories in the field of the characterisation of materials constitutive behaviour and damage under dynamic loadings [1-6]. The characterisation of material properties is very challenging, especially when the number of materi...
Abstracts Session 4 / International audience
peer reviewed / Jointed structures are ubiquitous constituents of engineering systems; however, their dynamic properties (e.g., natural frequencies and damping ratios) are challenging to identify correctly due to the complex, nonlinear nature of interfaces. This research seeks to extend the efficacy of traditional experimental methods for linear sy...
