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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These fatigue and fracture standards are useful to manufacturers and other users concerned with such materials in understanding their failure and stability mechanisms. Also, Refsalthough they pertain asgm straincontrolled testing, may prove of interest since they deal with sheet specimens approximately 0.
It is advisable to determine these surface residual stresses with X-ray diffraction peak shift or similar techniques, and that the value of the surface residual stress be reported along with the direction of determination that is, longitudinal, awtm, radial, and so forth.
Failure may be de? Surfaces intended to be parallel and straight should be in a manner consistent with 8. A number in parentheses indicates the year of last reapproval. E – 03 See all versions E E 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.
ASTM E Conducting Force Controlled Constant Amplitude Axial Fatigue Tests_百度文库
Obvious abnormalities, such atm cracks, machining marks, gouges, undercuts, and so forth, are not acceptable. The size of the gripped end relative to the gage section, and 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.
Fillet undercutting can be readily determined by inspection. No further reproductions authorized. This practice is not intended for application in axial fatigue aetm of components or parts.
Fatigue Standards and Fracture Standards
Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.
Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. E – 02 e1 See all versions E e1 E E E – 10 See all versions E Ee1 E Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
Readers are referred to Ref 1 should this occur. In reporting the results, state the criterion selected for de? Fire Standards and Flammability Standards. Redline Version E e1 E E The trial specimen should be rotated about its longitudinal axis, installed and checked in both orientations within the?
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. For cylindrical specimens, alignment should be checked by means of a trial test specimen with longitudinal strain gages placed at four equidistant locations around the minimum diameter. As a cautionary note, should localized yielding occur, signi? Sports Standards r466-96 Recreation Standards.
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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. Otherwise, the same dimensional relationships should apply, as in the case of the specimens described in 5.
Since specimen preparation can strongly in? Durability of Nonmetallic Material Standards.
Dimensional analysis and inspection should be conducted in a manner that will not visibly mark, scratch, gouge, score, or alter the surface of the specimen. The area restrictions should be the same as for the specimen described in 5. Current edition approved Nov. Thus, when embarking on a program of this nature it is essential to de?
Rolling Element Bearing Standards. The results may also be used as a guide for the selection of metallic materials for service under conditions of repeated direct stress.
These tests are conducted to examine and evaluate the behavior, susceptibility, astk extent of resistance of certain materials to sharp-notch tension, tear, axial fatigue, strain-controlled fatigue, surface crack tension, creep crack, and residual strain. The ratio of specimen test section width to thickness should be between two and six, and the reduced area should preferably be between 0.
Every effort should be made to prevent the occurrence of misalignment, either due to astmm rotation of the gripsor to a displacement in their axes of symmetry. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? One exception may be where these parameters are under e66-96. E E E As a conservative general measure, this procedure is recommended unless: Fatigue Standards and Fracture Standards.
Ee1 E e2 E e1 E E This is a particular danger in soft materials wherein material can be smeared over tool marks, thereby creating a potentially undesirable in? For specimens that are less than 0. Ee1 E E E Redline Version Ee1 E The trial test specimen should be turned about its axis, installed, and checked for each of four orientations within the?
The varying stress amplitude, as determined by a suitable dynamic veri? 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. Because of this, a circular cross section may be preferred if material form lends itself to this con?