Results 221 to 230 of about 249,201 (263)

Impact of Peculiar Velocities on Measurements of $$H_0$$

Since the Hubble constant measures the expansion rate of the Universe, any local motions that deviate from that expansion have the potential to bias measurements of H0. In this chapter we explore the nature of such “peculiar velocities” and the impact they can have on cosmological inferences.
D'Arcy Kenworthy, W., Davis, Tamara M.
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Low velocity impact response of laminated plates

23rd Structures, Structural Dynamics and Materials Conference, 1982
An analysis is presented to predict the response of anisotropic laminated plates to low-velocity impact by a rigid object. Transverse shear deformation in the plates is accounted for using Mindlin's theory and the governing equations are solved using Fourier integral transforms, assuming infinite planform dimensions for the plate.
R. L. Ramkumar, P. C. Chen
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Thoracic Deformation and Velocity Analysis in Frontal Impact

Journal of Biomechanical Engineering, 1995
The objective of the present study was to measure dynamic chest deformations and compute chest velocity and viscous criterion during real world frontal impacts conducted on a horizontal sled. Four unembalmed human cadavers were restrained using a three-point belt restraint in the driver seat of a sled buck.
N, Yoganandan, R M, Morgan, R H, Eppinger, F A, Pintar, D A, Skrade, A, Sances   +5 more
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Tribology at high-velocity impact

Tribology International, 2007
Abstract The tribological events taking place when a high-velocity projectile hits a SiC particulate reinforced AA 5083 composite material was examined under real conditions. The samples were cast in a disc shape by squeeze casting method. Different volume fractions of SiC particles were used.
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Metallic dust collectors for low velocity impacts

Advances in Space Research, 1986
Experiments simulating the non-destructive collection of cosmic dust are conducted at the laboratory of the Lehrstuhl fur Raumfahrttechnik (LRT) of the Technische Universitat Munchen (TUM). The electromagnetic accelerator setup is described, which is capable of obtaining an impact velocity between 10 and 400 m/s with particle masses up to 1 g.
W, Frisch, E, Igenbergs
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The Influence of Velocity in Low-Velocity Impact Testing of Composites Using the Drop Weight Impact Tower

Journal of Reinforced Plastics and Composites, 1995
Many structural advantages offered by composites due to their inherent tailorability await realization for lack of a clear understanding of their response under transient loading. One tool currently available for evaluation of impact response is the drop weight impact tower.
R. W. Rydin, M. B. Bushman, V. M. Karbhari   +2 more
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Low-velocity impact strength of sandwich materials

Journal of Sandwich Structures & Materials, 2010
Sandwich materials have been widely used in weight-sensitive structures in many fields, especially in the transport industry. There are different classes of sandwiches with a wide range of materials and properties within each type. The aim of this article is the comparison of the impact strength between polymeric and aluminum sandwich structures ...
CRUPI, Vincenzo, EPASTO, Gabriella, GUGLIELMINO, Eugenio   +2 more
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High velocity impact

2012
U.S. Navy (U.S.N.) authors.
Sholders, O. B., Plawchan, J. D.
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Effects of impact velocity on pressure-driven nanofluid

The Journal of Chemical Physics, 2013
Using molecular dynamics simulations, we investigate the pressure-driven water infiltration behavior of carbon nanotubes (CNTs), in which water molecules can infiltrate into CNTs from outside upon an external impact load. According to the direction of impact mechanical wave, the infiltration procedure can be divided into the forward stage (stage I) and
Hailong, Liu, Guoxin, Cao
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EFFECT OF FLEXIBILITY ON LOW VELOCITY IMPACT RESPONSE

Journal of Sound and Vibration, 1998
The nature of the response of compact and flexible bodies subject to low velocity impact is studied. The key parameters which govern the response for such impacts are identified and their effects on impact response are examined through numerical simulations.
Yigit, AHMET SALİH, Christoforou, A.P.
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