Shear strain estimation and lesion mobility assessment in elastography

Ultrasonics ◽  
2000 ◽  
Vol 38 (1-8) ◽  
pp. 400-404 ◽  
Author(s):  
Elisa E. Konofagou ◽  
Tim Harrigan ◽  
Jonathan Ophir
Keyword(s):  
Shear Strain ◽  
Strain Estimation ◽  
Mobility Assessment

scholarly journals Normal and shear strain estimation using beam steering on linear-array transducers

2007 ◽  
Vol 33 (1) ◽  
pp. 57-66 ◽  
Author(s):  
M. Rao ◽  
Q. Chen ◽  
H. Shi ◽  
T. Varghese ◽  
E.L. Madsen ◽  
...  
Keyword(s):  
Shear Strain ◽  
Linear Array ◽  
Beam Steering ◽  
Strain Estimation

Enhancing the performance of lateral shear strain estimation by using 2-D strain imaging

2014 ◽  
Vol 61 (5) ◽  
pp. 756-764 ◽  
Author(s):  
Tim Idzenga ◽  
Hendrik H.G. Hansen ◽  
Johan M. Thijssen ◽  
Chris L. de Korte
Keyword(s):  
Shear Strain ◽  
Strain Imaging ◽  
Lateral Shear ◽  
Strain Estimation

Enhancing the performance of lateral shear strain estimation by using 2-D strain imaging

2014 ◽  
Vol 61 (5) ◽  
pp. 756-764
Author(s):  
Tim Idzenga ◽  
Hendrik H. G. Hansen ◽  
Johan M. Thijssen ◽  
Chris L. de Korte
Keyword(s):  
Shear Strain ◽  
Strain Imaging ◽  
Lateral Shear ◽  
Strain Estimation

Analysis of magneto rheological elastomers for energy harvesting systems

2020 ◽  
Vol 64 (1-4) ◽  
pp. 439-446
Author(s):  
Gildas Diguet ◽  
Gael Sebald ◽  
Masami Nakano ◽  
Mickaël Lallart ◽  
Jean-Yves Cavaillé
Keyword(s):  
Magnetic Field ◽  
Energy Harvesting ◽  
Shear Strain ◽  
Magnetic Induction ◽  
Magnetic Particles ◽  
Homogeneous Magnetic Field ◽  
Electrical Signal ◽  
Harvesting Systems ◽  
Dc Bias ◽  
Magneto Rheological

Magneto Rheological Elastomers (MREs) are composite materials based on an elastomer filled by magnetic particles. Anisotropic MRE can be easily manufactured by curing the material under homogeneous magnetic field which creates column of particles. The magnetic and elastic properties are actually coupled making these MREs suitable for energy conversion. From these remarkable properties, an energy harvesting device is considered through the application of a DC bias magnetic induction on two MREs as a metal piece is applying an AC shear strain on them. Such strain therefore changes the permeabilities of the elastomers, hence generating an AC magnetic induction which can be converted into AC electrical signal with the help of a coil. The device is simulated with a Finite Element Method software to examine the effect of the MRE parameters, the DC bias magnetic induction and applied shear strain (amplitude and frequency) on the resulting electrical signal.

On the nominal transverse shear strain to characterize the severity of creasing

TAPPI Journal ◽  
2018 ◽  
Vol 17 (04) ◽  
pp. 231-240
Author(s):  
Douglas Coffin ◽  
Joel Panek
Keyword(s):  
Shear Strain ◽  
Transverse Shear ◽  
Elastic Limit ◽  
Experimental Results ◽  
Transverse Shear Strain ◽  
Maximum Strain ◽  
Machine Direction ◽  
Engineering Approach ◽  
Wide Range ◽  
Analytic Expression

A transverse shear strain was utilized to characterize the severity of creasing for a wide range of tooling configurations. An analytic expression of transverse shear strain, which accounts for tooling geometry, correlated well with relative crease strength and springback as determined from 90° fold tests. The experimental results show a minimum strain (elastic limit) that needs to be exceeded for the relative crease strength to be reduced. The theory predicts a maximum achievable transverse shear strain, which is further limited if the tooling clearance is negative. The elastic limit and maximum strain thus describe the range of interest for effective creasing. In this range, cross direction (CD)-creased samples were more sensitive to creasing than machine direction (MD)-creased samples, but the differences were reduced as the shear strain approached the maximum. The presented development provides the foundation for a quantitative engineering approach to creasing and folding operations.

HiMAT: High-Level Mobility Assessment Tool

2018 ◽  
Vol 30 (2) ◽  
pp. 97-99
Author(s):  
Gretchen R. Pfost ◽  
Brett Cook ◽  
Chang Ha Doh ◽  
Jerome Uthapan
Keyword(s):  
Assessment Tool ◽  
Mobility Assessment ◽  
High Level
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