By M. Grédiac (auth.), Tom Proulx (eds.)

This the fourth quantity of six from the once a year convention of the Society for Experimental Mechanics, 2010, brings jointly fifty eight chapters on program of Imaging strategies to Mechanics of fabrics and constitution. It offers findings from experimental and computational investigations regarding a variety of imaging strategies together with restoration of 3D rigidity depth elements From floor Full-field Measurements, identity of Cohesive-zone legislation From Crack-tip Deformation Fields, software of excessive pace electronic photo Correlation for Vibration Mode form research, Characterization of Aluminum Alloys utilizing a 3D complete box dimension, and occasional pressure fee Measurements on Explosives utilizing DIC.

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Extra info for Application of Imaging Techniques to Mechanics of Materials and Structures, Volume 4: Proceedings of the 2010 Annual Conference on Experimental and Applied Mechanics

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For thin and intermediate specimens, the identified out-of-plane tensile strength seems to be intrinsic to the material because it is independent of the stacking sequences and of the total thickness. Nevertheless, the apparent out-of-plane tensile strength seems to decrease for thick specimens, probably due to a lack of compaction during the manufacturing process of such thick specimens (higher thickness per ply). It is worth mentioning that the results of the intermediate quasi- 40 isotropic 25/50/25 L-angle specimen are considered as outliners (use of another batch of material).

Figure 13 shows the determined out-of-plane stress at failure thanks to finite element simulation for the different ply thicknesses. As demonstrated experimentally [3,4,6] for in-plane inter-fiber strengths (transverse tensile strength and in-plane shear strength), the out-of-plane tensile strength seems to be dependent on the thickness of the ply. As proposed in [7,8], a mixed failure criterion is used to predict the evolution of the strength as function of the ply thickness. The main idea consists in assuming that delamination can occur only if the onset of micro-delamination between the plies is reached (modelled with a stress criterion) and if there is enough energy for the coalescence of these micro-cracking (modelled with an energy criterion) leading to the first macroscopic delamination.

The virtual fields method for extracting constitutive parameters from full-fields measurements: a review. , Applying the virtual field method to the identification of elasto-plastic constitutive parameters. Int. J. , Identification of elasto-plastic sonstitutive parameters from statically undetermined tests using the virtual fields method. , Adaptive image correlation technique for full-field strain measurement. , Sheet metals testing with combined fringe projection and digital image correlation.

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