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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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?

In reporting the results, state the criterion selected for de? Because of this, a circular cross section may be preferred if material form lends itself to this con? The results may also be used as a guide for the selection of metallic materials for service under conditions of repeated direct stress.

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.

Sports Standards and Recreation Standards. In view of this, no maximum ratio of area grip to test section should apply. For specimens having a uniform gage length, it is advisable to place a similar set of gages at two or three axial positions within the gage section. Individual reprints single or multiple copies satm this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.

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In view of this fact, the method of preparation should be agreed upon prior to the beginning of the test program by both the originator and the user of the fatigue data to be generated.

NOTE 1—The following documents, although not directly referenced in the text, are considered important enough to be listed in this practice: Fatigue Standards and Fracture Standards. Current edition approved Nov.

Ee1 E e2 E e1 E E Surfaces intended to be parallel and straight should be in a manner consistent with 8. For most qstm grips, good alignment must come about from very careful attention to design detail.

Fatigue Standards and Fracture Standards

No circumferential machining should be evident when viewed at approximately magni? To ensure test section failure, the grip cross-sectional area should be at least 1. Threaded end specimens may prove difficult to align and failure often initiates at these stress concentrations when testing in the life regime of interest in this practice.

Oxygen Enriched Atmospheres Standards. Readers awtm referred to Ref 1 should this occur. Electrical Insulating Material Standards. In addition to fracture toughness and strain gradient, these standards also present the procedures for determining K-R curves, stress-life and strain-life fatigue data, threshold stress intensity factors, and reference temperatures.

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Redline Version Ee1 E Ea Ea Ee1 E Originally approved in Also, Refsalthough they pertain to straincontrolled testing, may prove of interest since they deal with sheet specimens approximately 0. For specimens that are less than 0. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.

Dimensional analysis and inspection should be conducted in ashm manner that will not visibly mark, scratch, gouge, score, or alter the surface e466-69 the specimen. E e1 E E E The test section length should be approximately two to three times the test section diameter. Ra, in the longitudinal direction.

The size of the gripped end relative to the gage section, axtm the blend radius from gage section into the grip section, may cause premature failure particularly if fretting occurs in the grip section or if the radius is too small.

Industrial Hygiene Standards and Safety Standards. It is beyond the scope of Practice E to extrapolate beyond this range or to extend this assumption to other materials systems that may be viscoelastic or viscoplastic at ambient test temperatures and within the frequency regime mentioned.

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