Applying Full-Field Measurement Techniques for the Thermomechanical Characterization of Shape Memory Alloys: A Review and Classification

2021 ◽  
Author(s):  
D. Delpueyo ◽  
A. Jury ◽  
X. Balandraud ◽  
M. Grédiac
Keyword(s):  
Shape Memory Alloys ◽  
Shape Memory ◽  
Field Measurement ◽  
Measurement Techniques ◽  
Full Field ◽  
Full Field Measurement ◽  
Thermomechanical Characterization

Inverse Characterization of Composite Materials Using Surrogate Models

2013 ◽  
Author(s):  
John Steuben ◽  
John Michopoulos ◽  
Athanasios Iliopoulos ◽  
Cameron Turner
Keyword(s):  
Objective Function ◽  
Elastic Properties ◽  
High Performance ◽  
Measurement Techniques ◽  
Material Model ◽  
Material System ◽  
Full Field ◽  
Full Field Measurement ◽  
Efficient Representation

In recent years, methods for the inverse characterization of mechanical properties of materials have seen significant growth, mainly because of the availability of enabling technologies like full-field measurement techniques, inexpensive high performance computing resources, and automated testing. Unfortunately, as the complexity of the material system increases even the most advanced methods for inverse characterization produce results in compute times that are not practical for real time applications. To overcome this limitation we present a method that uses Non-Uniform Rational B-spline (NURBs) based surrogate modeling to generate a very efficient representation of the material model and the associated objective function. In addition, we present a method for identifying the global minimum of this objective function that corresponds to the elastic properties that characterize the material. Validation of this methodology is achieved through synthetic numerical experiments that include both isotropic and orthotropic specimens defined both analytically and numerically. Statistical analyses on the effects of experimental noise supplement these results. We conclude with remarks regarding the use of this technique to recover the elastic properties from materials tested utilizing multiaxial robotic systems.

scholarly journals Experimental study of the stress gradient effect under fretting loading by full field measurement techniques

Wear ◽  
2015 ◽  
Vol 330-331 ◽  
pp. 160-169 ◽  
Author(s):  
A.-R. Moustafa ◽  
B. Berthel ◽  
S. Fouvry ◽  
E. Charkaluk
Keyword(s):  
Experimental Study ◽  
Field Measurement ◽  
Measurement Techniques ◽  
Stress Gradient ◽  
Full Field ◽  
Gradient Effect ◽  
Full Field Measurement
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