ASTM E466-96 PDF

E Standard Practice for Conducting Force Controlled Constant Amplitude Axial Fatigue Tests of Metallic Materials force~ notched specimens~ unnotched. ASTM E()e1 Standard Practice for Conducting Force Controlled Constant Amplitude Axial Fatigue Tests of Metallic Materials. Last previous edition approved in as E – 96()?1. DOI: / E 2 Handbook of Fatigue Testing, ASTM STP

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Paint Standards and Related Coating Standards. E – 10 See all versions E Ee1 E 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.

Fatigue Standards and Fracture Standards

E — 07 with as much economy as prudent. E e1 E E This practice is asrm intended for application in axial fatigue tests of components or parts. A number in parentheses indicates the year of last reapproval.

The trial test specimen should be turned about its axis, installed, and checked for each of four orientations within the? However, regardless of the nature of the forcing function, it should be reported sine, ramp, saw tooth, etc. Historical Version s – view previous versions of standard. This practice is limited to the fatigue testing of axial unnotched and notched specimens subjected to a constant amplitude, periodic forcing function in air at room temperature.

Ea Ea Ee1 E Last previous edition approved in as E — 96 ?

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For tests run in compression, the length of the test section should be approximately two times the test section diameter to minimize buckling. E E e1 E Oxygen Enriched Atmospheres Standards.

As a conservative general measure, this procedure is recommended unless: One set of strain gages should be placed at the center of the gage length to detect misalignment that causes relative rotation of the specimen ends about axes perpendicular to the specimen axis. The results may also be used as a guide for the selection of metallic materials for service under conditions of repeated direct stress.

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A caveat is given regarding the gage section with sharp edges that is, square or rectangular cross section since these are inherent weaknesses because the slip of e66-96 grains at sharp edges is not con?

Redline Version Ee1 E E In reporting the results, state the criterion selected for de? The size of the gripped end relative to the gage section, and the blend radius from gage section into the grip ee466-96, may cause premature failure particularly if fretting occurs in the grip section or if the radius is too small. Since specimen preparation can strongly in?

ASTM’s fatigue and fracture standards provide the appropriate procedures for carrying out fatigue, fracture, and other related tests on specified materials. Resilient Floor Covering Standards. Also, Refsalthough they pertain to straincontrolled testing, may prove of interest since they deal with sheet specimens approximately 0. The lower the bending stresses strainsthe more repeatable the test results will be from specimen to specimen.

For example, specimen alignment is of utmost importance and FIG. The test forces should be monitored continuously in the early stage of the test and periodically, thereafter, to ensure that the desired force cycle is maintained.

The acceptable ratio of the areas test section to grip section to ensure a test section failure is dependent on the specimen gripping method. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. 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.

Originally approved in Industrial Hygiene Standards and Safety Standards. The results may also be used as a guide for the selection of metallic materials for service under conditions of repeated direct stress. Ee1 E e1 E E In the typical regime of 10?

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Assurance that surface residual stresses are minimized can be achieved by careful control of the machining procedures. Medical Device Standards and Implant Standards. The ratio of specimen test section width to thickness should be between two and six, and the reduced area should preferably be between 0. E — 07 FIG. E – 15 See all versions Redline Version E Improper methods of preparation astmm greatly bias the test results.

ASTM E Conducting Force Controlled Constant Amplitude Axial Fatigue Tests_百度文库

These fatigue and fracture standards are useful to manufacturers and other users concerned with such materials in understanding their failure and stability mechanisms. This standard is subject to revision at any time by the wstm technical committee and must be reviewed every? The following documents, although not directly referenced in the text, are considered important enough to be listed in this practice: Corrosion Standards and Wear Standards. NOTE 2—Measurements of dimensions presume smooth surface?

Thus, when embarking on a program of this nature it is e46696 to define and maintain consistency a priori, as many variables as reasonably possible, with as much economy as prudent. It is important that the accuracy of alignment be kept consistent from specimen e4466-96 specimen. Because of this, a circular cross section may be preferred if material form lends itself to this con? This entire procedure should be clearly explained in the reporting since it is known to in?

Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor astk astm.

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