Ultrasonic stress analysis of a strip by the time-averaged photoelastic method

2005 ◽  
Author(s):  
Wei-Chung Wang ◽  
Ying-Huang Tsai
Keyword(s):  
Stress Analysis ◽  
Photoelastic Method

The Scope and Limitations of the Photoelastic Method of Stress Analysis

1953 ◽  
Vol 57 (507) ◽  
pp. 125-140 ◽  
Author(s):  
H. T. Jessop
Keyword(s):  
Stress Analysis ◽  
Safety Factor ◽  
Photoelastic Method ◽  
Considerable Difficulty ◽  
Distribution Of Stress

The problem of determining the distribution of stress over the various components of a structure such as an aircraft frame is one which has always presented considerable difficulty. For a large proportion of the components calculations of the stresses can only be carried out on the basis of assumptions and approximations, the effects of which cannot be estimated with any degree of accuracy and, since considerations of size and weight impose limitations upon the employment of a large safety factor, there has always existed a need for some practical means of checking the results of calculations or of obtaining more reliable estimates of the stresses.

A Photoelastic Study of Stresses in Rotating Disks

1940 ◽  
Vol 7 (2) ◽  
pp. A57-A60
Author(s):  
R. E. Newton
Keyword(s):  
Stress Analysis ◽  
Fringe Pattern ◽  
Three Dimensional ◽  
New Technique ◽  
Uniform Thickness ◽  
Rotating Disks ◽  
Photoelastic Method ◽  
Freezing Method ◽  
Stress Freezing Method

Abstract The recent experiments of Hetényi and others in developing a technique for “freezing” stresses in bakelite and other photoelastic plastics have broadened tremendously the scope of the photoelastic method of stress analysis. In addition to making possible the solution of three-dimensional problems, the new technique offers itself as a powerful tool in solving problems in which it is inconvenient to study the fringe pattern while the model is actually under load. Problems of centrifugal stresses in constant-speed rotors fall in this class and are readily handled by the stress-freezing method. It is the purpose of this paper to discuss the application of the technique to the determination of the stresses in rotating disks of uniform thickness having symmetrically placed noncentral holes, as shown in Fig. 1 (1, 2).

Introduction to the Theory of Photoelasticity and its Application to Problems of Stress Analysis

1943 ◽  
Vol 47 (392) ◽  
pp. 263-272 ◽  
Author(s):  
R. E. Arthur
Keyword(s):  
Optical Properties ◽  
Stress Analysis ◽  
Applied Stress ◽  
Experimental Methods ◽  
Mathematical Treatment ◽  
Photoelastic Method ◽  
Transparent Materials

Many problems arise in stress analysis which are not reasonably susceptible to mathematical treatment. Recourse may then be had to experimental methods. One of the most useful of these is the photoelastic method. This method is based upon the fact that transparent materials when stressed undergo changes in their optical properties which can be measured and related to the applied stress.

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