scholarly journals Toward an efficient inverse characterization of the viscoelastic properties of anisotropic media based on the ultrasonic polar scan

2018 ◽  
Author(s):  
A. Martens ◽  
M. Kersemans ◽  
J. Daemen ◽  
E. Verboven ◽  
W. Van Paepegem ◽  
...  
Keyword(s):  
Viscoelastic Properties ◽  
Anisotropic Media ◽  
Ultrasonic Polar Scan

Physical Ultrasonics of Composites

2011 ◽  
Author(s):  
Dale Chimenti ◽  
Stanislav Rokhlin ◽  
Peter Nagy
Keyword(s):  
Composite Laminates ◽  
Stiffness Matrix ◽  
Composite Plates ◽  
Anisotropic Media ◽  
Anisotropic Materials ◽  
Ultrasonic Waves ◽  
Laminated Plates ◽  
Structure Characteristic ◽  
Major Advance

Physical Ultrasonics of Composites is a rigorous introduction to the characterization of composite materials by means of ultrasonic waves. Composites are treated here not simply as uniform media, but as inhomogeneous layered anisotropic media with internal structure characteristic of composite laminates. The objective here is to concentrate on exposing the singular behavior of ultrasonic waves as they interact with layered, anisotropic materials, materials which incorporate those structural elements typical of composite laminates. This book provides a synergistic description of both modeling and experimental methods in addressing wave propagation phenomena and composite property measurements. After a brief review of basic composite mechanics, a thorough treatment of ultrasonics in anisotropic media is presented, along with composite characterization methods. The interaction of ultrasonic waves at interfaces of anisotropic materials is discussed, as are guided waves in composite plates and rods. Waves in layered media are developed from the standpoint of the "Stiffness Matrix", a major advance over the conventional, potentially unstable Transfer Matrix approach. Laminated plates are treated both with the stiffness matrix and using Floquet analysis. The important influence on the received electronic signals in ultrasonic materials characterization from transducer geometry and placement are carefully exposed in a dedicated chapter. Ultrasonic wave interactions are especially susceptible to such influences because ultrasonic transducers are seldom more than a dozen or so wavelengths in diameter. The book ends with a chapter devoted to the emerging field of air-coupled ultrasonics. This new technology has come of age with the development of purpose-built transducers and electronics and is finding ever wider applications, particularly in the characterization of composite laminates.

Characterization of viscoelastic properties of polymeric materials through nanoindentation

2005 ◽  
Vol 45 (2) ◽  
pp. 130-136 ◽  
Author(s):  
G. M. Odegard ◽  
T. S. Gates ◽  
H. M. Herring
Keyword(s):  
Viscoelastic Properties ◽  
Polymeric Materials

Towards mechanical characterization of granular biofilms by optical coherence elastography measurements of circumferential elastic waves

Soft Matter ◽  
2019 ◽  
Vol 15 (28) ◽  
pp. 5562-5573 ◽  
Author(s):  
Hong-Cin Liou ◽  
Fabrizio Sabba ◽  
Aaron I. Packman ◽  
Alex Rosenthal ◽  
George Wells ◽  
...  
Keyword(s):  
Elastic Waves ◽  
Viscoelastic Properties ◽  
Mechanical Characterization ◽  
Optical Coherence ◽  
Model Based

This paper presents a metrology approach combining optical coherence elastography measurements of circumferential elastic waves and model-based inverse analyses to nondestructively characterize the viscoelastic properties of soft spherical gels.

Characterization of viscoelastic properties of polyacrylamide/Cr(III) hydrogels

1996 ◽  
Vol 36 (4) ◽  
pp. 483-487 ◽  
Author(s):  
Ming Han ◽  
Lianghe Shi ◽  
Meiling Ye ◽  
Qing Guo
Keyword(s):  
Viscoelastic Properties
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