ASTM E466-07 PDF

Due to the very large number of tests offered, descriptions of those most commonly requested have been gathered into the following groups:. Touchstone is experienced in the performance of fatigue testing in almost every material system and at a wide variety of temperatures from cryogenic to over ? Machining methods and techniques can strongly influence the fatigue life of a material. Proper machining techniques prevent the introduction of stress risers or crack initiation sites. Touchstone is experienced in fatigue specimen preparation to comply with strict sample preparation requirements, including surface finish of the machined sample. This knowledge and care provides the most meaningful and best possible high cycle fatigue life results.

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Due to the very large number of tests offered, descriptions of those most commonly requested have been gathered into the following groups:. Touchstone is experienced in the performance of fatigue testing in almost every material system and at a wide variety of temperatures from cryogenic to over ?

Machining methods and techniques can strongly influence the fatigue life of a material. Proper machining techniques prevent the introduction of stress risers or crack initiation sites. Touchstone is experienced in fatigue specimen preparation to comply with strict sample preparation requirements, including surface finish of the machined sample. This knowledge and care provides the most meaningful and best possible high cycle fatigue life results.

ASTM E conducts axial fatigue tests to obtain the fatigue strength of metallic materials in the fatigue regime where the strains are predominately elastic both upon initial loading and throughout the test. The method is limited to the fatigue testing of axial unnotched and notched specimens subjected to constant amplitude, periodic forcing function in air at room temperature.

This practice is not intended for application in axial fatigue tests of components or parts. The ASTM E axial load fatigue test is used to determine the effect of variations in material, geometry, surface condition, stress, etc. The test may also be used as a guide to the selection of metallic materials for service under conditions of repeated direct stress.

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ASTM E466 – Force Controller Constant Amplitude Axial Fatigue Testing of Metallic Materials

Historical Version s - view previous versions of standard. Work Item s - proposed revisions of this standard. More E The results may also be used as a guide for the selection of metallic materials for service under conditions of repeated direct stress. To do so would require the control or balance of what are often deemed nuisance variables; for example, hardness, cleanliness, grain size, composition, directionality, surface residual stress, surface finish, and so forth. Thus, when embarking on a program of this nature it is essential to define and maintain consistency a priori, as many variables as reasonably possible, with as much economy as prudent. All material variables, testing information, and procedures used should be reported so that correlation and reproducibility of results may be attempted in a fashion that is considered reasonably good current test practice.

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