Author: Peizhong ZhangPublisher:
ISBN:
Category : Image analysis
Languages : en
Pages : 46
Book Description
A Photoelastic Determination of Stress-intensity Factors Under Thermal Stresses
Author: Peizhong ZhangPublisher:
ISBN:
Category : Image analysis
Languages : en
Pages : 46
Book Description
Determination of Stress-intensity Factors Due to Thermal Stresses Using Half-fringe Photoelasticity
Author: Peizhong ZhangPublisher:
ISBN:
Category : Image analysis
Languages : en
Pages : 12
Book Description
Photoelastic Determination of Stress Intensity Factors in Thick Walled Cylinders
Author: Experimental evaluation of stress concentration and intensity factors
Author: George C. SihPublisher: Springer Science & Business Media
ISBN: 9400983379
Category : Science
Languages : en
Pages : 407
Book Description
Experiments on fracture of materials are made for various purposes. Of primary importance are those through which criteria predicting material failure by deformation and/or fracture are investigated. Since the demands of engineering application always precede the development of theories, there is another kind of experiment where conditions under which a particular material can fail are simulated as closely as possible to the operational situation but in a simplified and standardized form. In this way, many of the parameters corresponding to fracture such as toughness, Charpy values, crack opening distance (COD), etc. are measured. Obviously, a sound knowledge of the physical theories governing material failure is necessary as the quantity of interest can seldom be evaluated in a direct manner. Critical stress intensity factors and critical energy release rates are examples. Standard test of materials should be distinguished from basic experi ments. They are performed to provide routine information on materials responding to certain conditions of loading or environment. The tension test with or without a crack is among one of the most widely used tests. Because they affect the results, with size and shape of the specimen, the rate of loading, temperature and crack configuration are standardized to enable comparison and reproducibility of results. The American Society for Testing Materials (ASTM) provides a great deal of information on recommended procedures and methods of testing. The objective is to standardize specifications for materials and definition of technical terms.
Photoelastic Determination of Stress Intensity Factors for Sharp Re-entrant Corners in Plates Under Extension
Author: Mohammad MahinfalahA Photoelastic Technique for the Determination of Stress Intensity Factors
Author: Mitchell Ira JollesPublisher:
ISBN:
Category : Photoelasticity
Languages : en
Pages : 182
Book Description
Determination of Stress Intensity Factors by Optical Methods
Author: Gianni NicolettoPublisher:
ISBN:
Category : Interferometry
Languages : en
Pages : 112
Book Description
Determination of Stress Intensity Factors from Photoelastic Data with Applications to Surface Flaw Problems
Author: M. A. SchroedlPublisher:
ISBN:
Category : Photoelasticity
Languages : en
Pages : 40
Book Description
A Taylor Series correction to the maximum in plane shear stress was studied as a means of extending the data zone in photoelastic determination of stress intensity factors beyond the singular region of a two degree of freedom analysis. Convergence properties were obtained by comparing with several complete two-dimensional solutions. Experiments were performed on two kinds of three-dimensional problems; plates containing surface flaws in both bending and extension. Results were analyzed by both a two degree of freedom and a Taylor Series Correction Method (TSCM). (Author Modified Abstract).
Photoelastic Determination of Mixed Mode Stress Intensity Factors
Author: Dallas Glen SmithPublisher:
ISBN:
Category : Photoelasticity
Languages : en
Pages : 29
Book Description
Using an idea proposed by G.R. Irwin, equations were developed for the maximum in-plane local shearing stress Tau sub m and average fringe loop inclination Theta sub m near the crack tip in terms of the Mode 1 and Mode 2 stress intensity factors K1 and K2 and polar coordinates r and Theta measured from the crack tip. A series of photoelastic experiments was performed on specimens exhibiting various edge crack configurations in finite strips under remote tensile loading. Measurements of Tau sub m and Theta sub m were made for progressively smaller fringes and used in the above mentioned equations to solve for K1 and K2 on a digital computer. Plots of apparent K versus r/a were made and extrapolated to the crack tip to yield the true values of K1 and K2. Results compared favorably with numerical results of Wilson. New results for 'angle' cracks were also obtained. (Author).
A Photoelastic Technique for the Determination of Stress Intensity Factors for Mode III Loading
Author: William Thor HardrathPublisher:
ISBN:
Category :
Languages : en
Pages : 74
Book Description