Determination of Temperature Induced Stresses in a Conical Shell

ARS Journal ◽  
1960 ◽  
Vol 30 (11) ◽  
pp. 1041-1046
Author(s):  
V. A. SIBIRIAKOV
Keyword(s):  
Conical Shell ◽  
Induced Stresses

Determination of Residual Stress of Hard Film/Soft Substrate Specimens via Unloading Results of Nanoindentation Tests

2011 ◽  
Vol 328-330 ◽  
pp. 843-848
Author(s):  
Huu Hung Nguyen ◽  
Pal Jen Wei ◽  
Jen Fin Lin
Keyword(s):  
Residual Stress ◽  
Residual Stresses ◽  
Soft Substrate ◽  
Large Depth ◽  
Cube Corner ◽  
Induced Stresses ◽  
Depth Curves

A method used to determine the residual stress in a hard film deposited on a soft substrate via the unloading load-depth curves was proposed. The unloading curves with transitional behaviors were used to determine the film deflection stiffness, and then the residual stresses were obtained. Significant extra stresses were induced by a cube corner indenter at large depth. In contrast, the indentation-induced stresses could be neglected in cases of Berkovich indentation at relatively small depths.

Diffusion in Metallic Multilayers

1995 ◽  
Vol 382 ◽  
Author(s):  
A. L. Greer
Keyword(s):  
Plastic Flow ◽  
Microstructural Evolution ◽  
Low Temperatures ◽  
Flow Behaviour ◽  
Individual Species ◽  
Metallic Multilayers ◽  
Induced Stresses ◽  
Interdiffusion Kinetics

ABSTRACTThe use of metallic multilayers for diffusion measurements is reviewed. Experiments on epitaxial Ag/Au multilayers show that microstructural evolution can affect the measurements, but that nonetheless accurate determinations of lattice interdiffusivity can be made down to exceptionally low temperatures. Experiments on amorphous Ni-Zr multilayers show that with diffusional symmetry there can significant diffusion-induced stresses. Analysis of the interdiffusion kinetics as influenced by stress permits the determination of a range of materials parameters, including the diffusivities of individual species and plastic flow behaviour.

Determination of the initial response of conical shell to an impulse load

1971 ◽  
Vol 7 (8) ◽  
pp. 916-918
Author(s):  
A. P. Filippov ◽  
E. G. Yanyutin
Keyword(s):  
Conical Shell ◽  
Initial Response ◽  
Impulse Load

Galactic orbits of stars

1966 ◽  
Vol 25 ◽  
pp. 93-97
Author(s):  
Richard Woolley
Keyword(s):  
Globular Cluster ◽  
Potential Field ◽  
High Velocity ◽  
Velocity Vector ◽  
Variable Stars ◽  
The Sun ◽  
Proper Motions ◽  
Rr Lyrae ◽  
The Galaxy

It is now possible to determine proper motions of high-velocity objects in such a way as to obtain with some accuracy the velocity vector relevant to the Sun. If a potential field of the Galaxy is assumed, one can compute an actual orbit. A determination of the velocity of the globular clusterωCentauri has recently been completed at Greenwich, and it is found that the orbit is strongly retrograde in the Galaxy. Similar calculations may be made, though with less certainty, in the case of RR Lyrae variable stars.

Distance to SN 1987A and the LMC

1999 ◽  
Vol 190 ◽  
pp. 549-554
Author(s):  
Nino Panagia
Keyword(s):  
Angular Size ◽  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Light Curves ◽  
Distance Modulus ◽  
Absolute Size ◽  
Sn 1987A

Using the new reductions of the IUE light curves by Sonneborn et al. (1997) and an extensive set of HST images of SN 1987A we have repeated and improved Panagia et al. (1991) analysis to obtain a better determination of the distance to the supernova. In this way we have derived an absolute size of the ringRabs= (6.23 ± 0.08) x 1017cm and an angular sizeR″ = 808 ± 17 mas, which give a distance to the supernovad(SN1987A) = 51.4 ± 1.2 kpc and a distance modulusm–M(SN1987A) = 18.55 ± 0.05. Allowing for a displacement of SN 1987A position relative to the LMC center, the distance to the barycenter of the Large Magellanic Cloud is also estimated to bed(LMC) = 52.0±1.3 kpc, which corresponds to a distance modulus ofm–M(LMC) = 18.58±0.05.

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