Material Identification Using Mixed Numerical Experimental Methods : Proceedings of the EUROMECH Colloquium Held in Kerkrade, The Netherlands, 7–9 April 1997

Euromech 357 took place in the nice authentic monastery 'Rolduc' in Kerkrade, Holland. The objective was to bring together researchers to present their latest advancements in the relatively new domain of Material properties identification by Mixed Numerical Experimental Methods (MMM). MMM are a modem and increasingly powerful way to determine the values of unknown parameters in a numerical model by observations made on real physical test structures. Starting from the measurement of output values (like displacements, stresses, velocities, vibrations, .. ) of the real physical test structure, MMM try to update parameters in the numerical model in such a way that the computed observations match the experimental observations. It was shown clearly at the colloquium that the combined use of numerical analysing tools and sophisticated measurement techniques has created an extra degree of freedom for the design of experiments and has led to new approaches for material characterisation. The colloquium was attended by 39 participants coming from 12 different European countries. We had 23 oral presentations on the different topics of the above mentioned sessions. Each presentation was followed by an intensive discussion. Du~ to the informal atmosphere and the limited number of participants, the discussions were very lively and fruitful. The opportunity to continue to discuss common problems after dinner in a reserved place was also offered to the Euromech participants. This opportunity and the fact that the monastery was isolated (nobody could escape!) created an excellent platform for discussions and personal contacts. Front Matter....Pages i-x Identification of the Complex Moduli of Thin Fibre Reinforced Polymer Plates Using Measured Modal Parameters....Pages 1-9 Characterization of Interphase Conditions in Composite Materials....Pages 11-20 Identification of Shear-Moduli of Microstructures....Pages 21-30 Identification of the Dynamic Material Properties of Composite Sandwich Panels with a Mixed Numerical/Experimental Technique....Pages 31-39 Mixed Numerical and Experimental Stiffness Identification Methods for Soft Textile Composites....Pages 41-50 A Simple Method for Determining the Anisotropic Properties of Cold Drawn Wire....Pages 51-60 Analysis of Inhomogeneous Displacement Fields for the Identification of Parameters for Elasto-Plastic Deformation Laws....Pages 61-70 Determination of Parameters in Elasto-Plastic Models of Aluminium....Pages 71-80 Material Parameter Identification for Large Deformation Plasticity Models....Pages 81-92 An Inverse Approach for the Identification of Complex Material Behaviours....Pages 93-102 Discussion on Some Estimators in Mixed Numerical/Experimental Techniques....Pages 103-108 Stochastic Parameter Identification in the Case of Data Uncertainties....Pages 109-121 A Combined Numerical/Experimental Method for Estimating Parameters and Structure of Viscoelastic Constitutive Equations Using Complex Flows....Pages 123-132 Computer Aided Identification of the Temperature Dependence of Thermal Properties....Pages 133-141 Complex Material Property Identification for Cement Matrix Composites by a Mixed Numerical-Experimental Method....Pages 143-152 Experiments and Simulations of Interface Fracture in Concrete....Pages 153-162 Inverse Analysis of a Tunnel Excavation Problem from Displacement and Pore Water Pressure Measurements....Pages 163-172 Characterization of the In-Plane Mechanical Behaviour of the Human Skin in Vivo....Pages 173-182 Determination of Trabecular Bone Tissue Elastic Properties by Comparison of Experimental and Finite Element Results....Pages 183-192 Mixed Numerical/Experimental Method for the Identification of Damage in Composite Materials....Pages 193-202 Inverse Identification of the Internal Length Scale of Quasi-Brittle Materials Using Nonlocal Damage Models....Pages 203-212 Parameter Identification of the Cohesive Crack Model....Pages 213-222 Material Property Assessment in Cracked Reinforced Concrete by Dynamic System Identification....Pages 223-232 Front Matter....Pages 233-233 Elastic Moduli Identification of a Composite Tube and an Epoxy Resin Plate Using Both Experimental and Numerical Modal Analysis — Sensibility Analysis....Pages 235-235 Soil Identification Using Data Processing of Penetration Experiments....Pages 236-236 Complete Elastic Characterization of Transversely Isotropic Composite Rods by Guided Structural Waves....Pages 237-237 Identification of Material Parameters for Measurement Error Models Via Multiplier Methods....Pages 238-238 Fibre/Matrix Interface Fracture Toughness Identification in Single Fibre Fragmentation Test....Pages 239-239 A Mixed Numerical and Experimental Approach for the Identification of Elastic Plastic Relations in Wide Range of Strains, Strain-Rates and Temperature....Pages 240-240 This book presents a selection of papers from the EUROMECH 357 Colloquium on Material Identification using Mixed Numerical Experimental Methods. For the first time, people from different scientific communities joined together in discussing methods for the mechanical characterisation of materials with which they work. The papers present a state-of-the-art overview of the methods and implementation for various applications. Starting from the measurement of output values (such as displacements, stresses, velocities, vibrations, etc.) of a real physical test structure, parameters in the numerical model are updated in such a way that computed observations match experimental observations. It is shown that the combined use of numerical analysing tools and sophisticated measurement techniques has created an extra degree of freedom for the design of experiments and has led to new approaches for material characterisation. The book is suitable for students at graduate level and beyond, and for researchers and professionals in the field of material characterisation, material processing and engineering.