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
Since specimen preparation can strongly in? E – 02 e1 See all versions E e1 E E 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.
Industrial Hygiene Standards and Safety Standards. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Ee1 E Ee1 E As a cautionary note, should localized yielding occur, signi?
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. Appendix X1 presents an example of a machining procedure that has been employed on some metals in an attempt to minimize the variability of machining and heat treatment upon fatigue life.
Every effort should be made to prevent the occurrence of misalignment, either due to twist rotation of the gripsor to a displacement in their axes of symmetry. Corrosion Standards and Wear Standards.
E – 05 e1 See all versions E e1 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. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.
Because of this, a circular cross section may be preferred if material form lends itself to this con?
Fatigue Standards and Fracture Standards
E — 07 fatigue test the permanent deformation of the unbroken but tested specimens for example, percent change in cross-section area of test section should be reported. Failure may be de? This practice is not intended for application in axial fatigue tests of components or parts. The ratio of specimen test section width to thickness should be between two and six, and the reduced area should preferably be between 0.
Assurance that surface residual stresses are minimized can be achieved by careful control of the machining procedures. Also, Refsalthough they pertain to straincontrolled testing, may prove of interest since they deal with sheet specimens approximately 0.
Ea Ea Ee1 E Specimens should be cleaned prior to testing e646-96 solvent s non-injurious and non-detrimental to the mechanical properties of the material in order to remove any surface oil?
Business Copy Product Standards. The reduced section length should be greater than three times the minimum test section diameter. Current edition approved Nov.
ASTM E Conducting Force Controlled Constant Amplitude Axial Fatigue Tests_百度文库
E – 85 See all versions E e1 E E No circumferential machining should be evident when viewed at approximately magni? Search and Rescue Operations Standards. Road Standards and Paving 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.
E — 07 with as much economy as prudent. As a conservative general measure, this procedure is recommended unless: NOTE 1—The following documents, although not directly referenced in the text, are considered important enough to be listed in this practice: 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 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. E – 15 See all versions Redline Version E In the case of surfaces that are not smooth, due to the fact that some surface treatment or condition is being studied, the dimensions should be measured as above and the average, maximum, and minimum values reported.
The test section length should be approximately two to three times the test section diameter. Ee1 E E E E – 10 See all versions E 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.
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Ee1 E e2 E e1 E E E – 04 See all versions E E e1 E To ensure test section failure, the grip cross-sectional area should be at least 1. It is important that the accuracy of alignment be e46-696 consistent from specimen to specimen.
E e1 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 qstm considered reasonably good current test practice. The trial test specimen should be turned about its axis, installed, and checked for each of four orientations within the?
The storage medium should generally be removed before testing using appropriate solvents, if necessary, without adverse effects upon the life of the specimens.