Contact oblique

The control has been performed by contact, in oblique transverse waves with an angle of 45°. In this test, we have inserted Hilbert transform for detecting envelops. 

According to the amount of substance taken add 60-90 mg. of finely powdered silver nitrate (it is best to add one and a half times the amount which corresponds to the expected halogen content). Then, if the substance is only slowly attacked by nitric acid in the cold, add 10-1-5 c.c. of red fuming nitric acid. In the case of substances which react vigorously with nitric acid in the cold, hold the Carius tube obliquely and add the acid in a small round-bottomed tube (length 6 cm., width 0-8 cm.), cautiously allowing it to slide to the bottom of the Carius tube and taking care that substance and acid do not come into contact with each other. 

Detonation, Oblique Impact of a Layer of Explosive by a Metal Plate in. David et al (Ref) conducted experiments on initiation of explosives by impacts upon them of metal plates. When the metal plate came in contact with the layer of explosive, not all at once but gradually, an oblique detonation wave was initiated. In experimental arrangement shown in Fig 1, a metal plate (such as of Cu), was bent thru an angle

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In this chapter, two simple cases of stereomechanical collision of spheres are analyzed. The fundamentals of contact mechanics of solids are introduced to illustrate the interrelationship between the collisional forces and deformations of solids. Specifically, the general theories of stresses and strains inside a solid medium under the application of an external force are described. The intrinsic relations between the contact force and the corresponding elastic deformations of contacting bodies are discussed. In this connection, it is assumed that the deformations are processed at an infinitely small impact velocity and for an infinitely long period of contact. The normal impact of elastic bodies is modeled by the Hertzian theory [Hertz, 1881], and the oblique impact is delineated by Mindlin s theory [Mindlin, 1949]. In order to link the contact theories to collisional mechanics, it is assumed that the process of a dynamic impact of two solids can be regarded as quasi-static. This quasi-static approach is valid when the impact velocity is small compared to the speed of the elastic... 

In the previous sections, only the normal contact of two elastic spheres with perfect smooth surfaces (i.e., no tangential force) is considered. However, for oblique contact between two frictional spheres, tangential forces are encountered, and, consequently,... 

Besides the oblique contact, tangential displacements may also be produced in the contact of two elastic spheres under the actions of a compressional twist, as shown in Fig. 2.13. Since the torsional couple does not give rise to a displacement in the z-direction, the pressure distribution is not influenced by the twist and is thus given by the Hertzian contact theory. 

It crystallizeB with 7 Aq. from saturated or supersaturated solutions at 5 (41 F.) or, more usually, with 10 Aq. As usually met with it is in large, colorless, oblique rhombic prisms with 10 Aq which effloresce in air and gradually lose all their Aq. It fuses at 33 (91. 4 F.) in its Aq, which it gr uaUy loses. If fused at 33 (91. 4 F.) and allowed to cool, it remuns liquid in supersaturated solution, firom which it is deposited, the entire mass becoming solid, on contact with a small particle of solid matter. It dissolves in Hd with considerable diminution of temperature. 

ANL s ultrasonic viscometer is a nonintrusive in-line device that measures both fluid density and viscosity. The design of the viscometer is based on a technique that measures acoustic and shear impedance. The technique was first applied by Moore and McSkimin (1970) to measure dynamic shear properties of solvents and polystyrene solutions. The reflections of incident ultrasonic shear (1-10 MHz) and longitudinal waves (1 MHz), launched toward the surfaces of two transducer wedges that are in contact with the fluid, are measured. The reflection coefficients, along with the speed of sound in the fluid, are used to calculate fluid density and viscosity. Oblique incidence was commonly used because of better sensitivity, but mode-converted waves often occur in wedges that do not exhibit perfect crystal structure and lack well-polished surfaces. For practical applications, we use the normal-incidence arrangement. 

Mindlin, R.D., and Deresiewicz, H. 1953. Elastic spheres in contact under varying oblique forces. Journal of Applied Mechanics 20, ASME 327-344. 

In order to express the surface energy, it is assumed that there is an easy axis on the surface or interface. The existence of the easy axis is the only respect in which the surface differs from the bulk. The interaction between the LC and the interface in contact with it may be mainly due to the van der Waals-Lifshitz forces,which are related to the imaginary part of the dielectric permittivity at frequencies above the infrared, i.e., light absorption. In this paper, the easy axis is defined by a unit vector whose direction coincides with the optical axis of the anisotropic surface. For a single oblique evaporation of 85 , it was found that the optical axis tilted from the surface by about 5 . ... 

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