The Ray Method | ScienceGate

The mechanical properties of three titanium alloys (Ti-7Mo-3Al, Ti-7Mo- 3Cu and Ti-7Mo-3Ta) were evaluated as function of: 1) Solutionizing in the beta field and aging, 2) Thermal Mechanical Processing in the beta field and aging, 3) Solutionizing in the alpha + beta field and aging. The samples were isothermally aged in the temperature range 300° to 700*C for 4 to 24 hours, followed by a water quench. Transmission electron microscopy and X-ray method were used to identify the phase formed. All three alloys solutionized at 1050°C (beta field) transformed to martensitic alpha (alpha prime) upon being water quenched. Despite this heavily strained alpha prime, which is characterized by microtwins the tensile strength of the as-quenched alloys is relatively low and the elongation is as high as 30%.

Download Full-text

Specific Features of Material Recognition by the Multi-Energy X-Ray Method

Russian Journal of Nondestructive Testing ◽

10.1134/s1061830919040119 ◽

2019 ◽

Vol 55 (4) ◽

pp. 308-321 ◽

Cited By ~ 2

Author(s):

S. P. Osipov ◽

E. Yu. Usachev ◽

S. V. Chakhlov ◽

S. A. Shchetinkin ◽

O. S. Osipov

Keyword(s):

Ray Method ◽

X Ray ◽

Material Recognition

Download Full-text

Ray-tube integration in shooting and bouncing ray method

Microwave and Optical Technology Letters ◽

10.1002/mop.4650010804 ◽

1988 ◽

Vol 1 (8) ◽

pp. 286-289 ◽

Cited By ~ 40

Author(s):

S. W. Lee ◽

H. Ling ◽

R. Chou

Keyword(s):

Ray Method

Download Full-text

Quasi‐shear waves in inhomogeneous weakly anisotropic media by the quasi‐isotropic approach: A model study

Geophysics ◽

10.1190/1.1444909 ◽

2001 ◽

Vol 66 (1) ◽

pp. 308-319 ◽

Cited By ~ 21

Author(s):

Ivan Pšenčík ◽

Joe A. Dellinger

Keyword(s):

Order Approximation ◽

Anisotropic Media ◽

Ray Method ◽

Weak Anisotropy ◽

S Waves ◽

Model Study ◽

Arbitrary Strength ◽

Isotropic Media ◽

Synthetic Models ◽

Ray Methods

In inhomogeneous isotropic regions, S-waves can be modeled using the ray method for isotropic media. In inhomogeneous strongly anisotropic regions, the independently propagating qS1- and qS2-waves can similarly be modeled using the ray method for anisotropic media. The latter method does not work properly in inhomogenous weakly anisotropic regions, however, where the split qS-waves couple. The zeroth‐order approximation of the quasi‐isotropic (QI) approach was designed for just such inhomogeneous weakly anisotropic media, for which neither the ray method for isotropic nor anisotropic media applies. We test the ranges of validity of these three methods using two simple synthetic models. Our results show that the QI approach more than spans the gap between the ray methods: it can be used in isotropic regions (where it reduces to the ray method for isotropic media), in regions of weak anisotropy (where the ray method for anisotropic media does not work properly), and even in regions of moderately strong anisotropy (in which the qS-waves decouple and thus could be modeled using the ray method for anisotropic media). A modeling program that switches between these three methods as necessary should be valid for arbitrary‐strength anisotropy.

Download Full-text