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However, when applied to a collection of data without further quali? E — 05ae1 plastic-zone adjustment, r Y [L]—an addition to the physical crack size to account for plastic crack-tip deformation enclosed by a linear-elastic stress? E Caution is required in extending this concept to design. A dynamometer for use in tension and in compression will have two dynamometer ranges, one in tension and one in E compression.

Standard terminology relating to fatigue and fracture testing – CERN Document Server

Otherwise, the k f data are not consistent and are markedly dependent on the type of notch, the fatigue life of interest, and the value of the mean stress. One component is due to the variability of the test material. E environment monitoring— in fatigue testing, the periodic or continuous measurement of?

E dynamometer—an elastic calibration device used to verify the indicated forces applied by a fatigue testing system. Thus, these values should not be extrapolated to Sm? E stretch zone width SZW [L]—the length of crack extension astj occurs during crack-tip blunting, for example, prior to the onset of unstable brittle crack extension, pop-in, or slow stable crack extension. E variable amplitude loading— See spectrum loading. E ideal-crack-tip stress?


The values obtained by the two methods may differ. E estimation—in statistical analysis, a procedure for making a statistical inference about the numerical values of one or more unknown population parameters from the observed values in a sample.

ASTM E1823 – 13

E crystallographic cleavage—the separation of a crystal along a plane of? E estimate—in statistical analysis, the particular value or values of a parameter computed by an estimation procedure for a given sample.

Special test setups may permit the separation of these two E components of variance. N curves were almost parallel and almost horizontal.

ASTM E – 13 Standard Terminology Relating to Fatigue and Fracture Testing

Greek symbols are listed in accordance with their spelling in English. E minimum force, P min [F]—in fatigue, the lowest algebraic value of applied force in a cycle. E E crack length, a [L]—See crack size and surface crack length. In Test Method EK-decreasing tests involve force shedding as the crack grows either E continuously or by a series of decremental steps.

For N, a log scale is commonly used. E tolerance interval—an interval computed so that it will include at least a stated percentage of the population with a stated probability. The listing of de? In general, the curves E should not be extrapolated to other values of p. Accordingly, it is convenient to analyze log N using methods based on the normal E distribution.


E R-curve—a plot of crack-extension resistance as a function of stable crack extension, Dap astj Dae. E yield strength, sYS [FL? In test specimens, the two surfaces parallel to this plan view are termed side surfaces, and the four surfaces normal to this plan view the boundaries in the plan view are termed edge surfaces. Other criteria may be used but should be clearly de?

Originally approved in The symbol N see de? The parameter tt can be separated into hold and non-hold that is, steady and dynamic components: If you feel that your comments have not received a fair hearing you should make your views known to the ASTM E123 on Standards, at the address shown below. The SZW is co-planar with the original unloaded fatigue precrack aztm refers to an extenE sion of the original crack.

E maximum stress-intensity factor, Kmax [FL? E group—in fatigue, specimens of the same type tested at a speci?