Results 261 to 270 of about 417,428 (298)

Phase stepping in fiber-based speckle shearing interferometry

Optics Letters, 1994
An optical-fiber-based speckle shearing interferometer for an out-of-plane displacement derivative measurement is described. The technique uses a highly birefringent optical fiber to illuminate a test object with equal amounts of orthogonally polarized light, and the interferometer is readily phase stepped, without mechanical movement of components, by
J D, Valera, J D, Jones
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Drawing-Based Manufacturing of Shear-Activated Reversible Adhesives

ACS Applied Materials & Interfaces, 2020
Although biomimetic technologies for dry reversible adhesion seem to be maturing, the costs, complexity, and time expenditures associated with the current template-based molding techniques call for research on other fabrication methods. In this paper, we report a novel cost-effective, simple, and flexible drawing-based technique for manufacturing the ...
Jae-Kang Kim, Michael Varenberg
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Flexible Shear Sensor Based on Embedded Optoelectronic Components

IEEE Photonics Technology Letters, 2011
Tactile shear stresses play an important role in the medical field and robotics. To monitor these stresses in situ, there is a need for unobtrusive flexible sensors that can be wrapped around curved surfaces or moving body parts. The presented sensor is based on changing coupling of optical power between a vertical-cavity surface-emitting laser (VCSEL)
Missinne J., Bosman E., Van Hoe B., Van Steenberge G., Kalathimekkad S., Van Daele P., Vanfleteren J.   +6 more
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A Yield Criterion Based on Mean Shear Stress

Key Engineering Materials, 2014
This work investigates the relation between shear stress and plastic yield considering that a crystal can only deform in a limited set of directions. The shear stress in arbitrary directions is mapped for some cases showing relevant differences. Yield loci based on mean shear stress are constructed.
Emmens, W.C., van den Boogaard, A.H.
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Möllenstedt biprism based shearing ptychographic iterative engine method

Ultramicroscopy, 2019
Since classical lensless ptychographic iterative engine (PIE) method can retrieve both the sample amplitude and phase distributions with high resolution, fast convergence speed and large field of view, it has been widely used in various applications especially in short wavelength imaging such as X-ray or electron beam fields.
Zhilong, Jiang, Yuanjie, Li, Yan, Kong, Lei, Meng, Shouyu, Wang, Cheng, Liu   +5 more
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Knowledge-based prediction of shear strength of concrete beams without shear reinforcement

Engineering Structures, 2008
Structural engineers heavily rely on computer software to perform structural analysis, and they increasingly computerize design procedures to avoid manual repetitions. To benefit fully from the computerization, it is necessary to utilize the domain knowledge contained in a database such as a concrete shear database used in this paper. A knowledge-based
Sungmoon Jung, Kang Su Kim
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DIRECT SHEAR FAILURE DESIGN BASED ON THE SHEAR-FRICTION FAILURE MODEL AND THE PLASTIC SHEAR ENVELOPE

2005
The representation of shear failure along a plane in concrete elements, when subjected to stress normal to the plane, in the form of a failure envelope was first muted by Kupfer [1]. The idea was later introduced in a design format by the brothers Birkeland [2] when they introduced the shear-friction hypothesis.
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Retentive shear strengths of various bonding attachment bases

American Journal of Orthodontics, 1980
The purpose of this study was to determine whether any of the commercially available attachment bases had significantly better retentive properties. This was determined by their shear strengths after all were bonded to bovine incisors with Auto-Tach. The mean shear strengths of sixteen bases were statistically compared to each other at 24 hours and at ...
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Quadriwave Lateral Shearing Interferometer Based on a Crystal Orthogonal Shear Displacer

SSRN Electronic Journal, 2022
Yahui Zhu, Ailing Tian, Bingcai Liu, Hongjun Wang, Xueliang Zhu, Kexin Ren, Yuwen Zhang, Kai Wang, Siqi Wang   +8 more
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Porosity estimation based on the shear modulus inversion of seismic shear wave

GEOPHYSICS
Reliable estimation of subsurface porosity is necessary for hydrocarbon reservoir characterization and fluid identification. Porosity estimations from seismic data can provide the lateral distribution of subsurface porosity, but the results may be highly nonunique because subsurface elastic properties (such as velocity and density) can be affected by ...
Fucai Dai, Feng Zhang, Xiangyang Li, Yong Xu   +3 more
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