4,087 Result(s)
within
Article
**fu Fu
Engineering
-
Article
On bluff body flame stabilization
Several aspects of bluff body flame stabilization are discussed in terms of a theory which focuses attention on the initial mixing region between cool combustible and hot combustion products. Some experiments ...
-
Article
The moiré method applied to three-dimensional elastic problems
The purpose of this paper is to develop the technique of moiré for three-dimensional strain and stress analysis. The classical problem of contact of a sphere with a semi-infinite space is studied, and experime...
-
Article
Gap effect on moiré patterns
Nous analysons les caractéristiques principles des lignes de moiré produitues par des réseaux, dont les deux plans ne coïncident pas, illuminés par la lumière diffuse et non cohérente.
-
Article
Maximum stress at the angular corners of long strips bonded on one side and shrunk
The value of the maximum stress, and its position, at the corner of long strips bonded on one side and shrunk, has been determined using photoelasticity. The angle of the strip end varies from zero (crack) to ...
-
Article
Moiré-fringe interpolation and multiplication by fringe shifting
A simple technique of shifting the master grating to increase the sensitivity of moiré measurements is proposed. Details of the technique are described and an application of multiplication by three of a 1000-l...
-
Article
Production of high-density Moiré grids
-
Article
Techniques of optical spatial filtering applied to the processing of moiré-fringe patterns
-
Article
A whole-field method for the measurement of two-dimensional state of stress in thin films
A method is developed whereby the two-dimensional state of stress in thin films deposited on substrate of any geometry can be measured. The method is a whole-field nondestructive technique and is simple to use...
-
Article
On the stability of steady-state response of certain nonlinear dynamic systems subjected to harmonic excitations
Considered are dynamic systems whose response can be described by a set of nonlinear differential equations with harmonic coefficients that are proportional to a small parameter ɛ. The stability of the non-tri...
-
Article
Stress bounds for bars in torsion
Upper bounds for the maximum shear stress in the St. Venant torsion problem are derived with the aid of the theory of subharmonic functions. The main result is a bound that is determined in a simple manner by ...
-
Article
Heat radiation from fires of aviation fuels
As a practical matter, the horizontal radiation profile of a free-burning fire may be more significant than the vertical profile from a fire-fighting point of view.
-
Article
A shadow-moiré method with two discrete sensitivities
A shadow-moiré method using a composite grating with two discrete pitches is proposed whereby the range of measurable deflection is enlarged as compared to the ordinary shadow-moiré method.
-
Article
Displacement measurements in the interior of 3-D bodies using scattered-light speckle patterns
-
Article
Moiré methods of strain analysis
-
Article
Elasto-plastic analysis for a finite thickness rectangular plate containing a through-thickness central crack
The objective of this work is to present a three-dimensional analysis of the elasto-plastic response of a center-cracked rectangular panel by using an alternate method, the method of lines (MOL). The problem o...
-
Article
Recent research activities in experimental mechanics in China
A brief review is presented of the recent activities in the field of experimental mechanics in the People's Republic of China.
-
Article
Use of the holophotoelastic method for three-dimensional stress analysis
This paper suggests a new manufacturing and freezing technology for photoelastic materials which produces stress-optical coefficient ratios,B/A, different from −0.5. By means of the absolute relardation method an...
-
Article
A simplification and supplement to formula KQ of ASTM E399-81 three point bending
-
Article
Pattern recognition techniques in remote sensing data analysis
This paper discusses several selected topics in decision-theoretic pattern recognition methods and introduces the syntactic approach to pattern recognition in remote sensing problems. The topics discussed are ...
-
Article
The diffusion of Zn in GaAs at low temperature
The diffusion of Zn into GaAs at low temperature has been investigated. The experiments are carried out in an evacuated and sealed quartz ampoule using ZnAs2 as the source of Zn.
