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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The ratio of specimen test section width to thickness should be between two and six, and the reduced area should preferably be between 0. Improper methods of preparation can greatly bias the test results.
Surfaces intended to be parallel and straight should be in a manner consistent with 8. Since specimen preparation can strongly in? Appendix X1 presents asfm 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. Ra, in the longitudinal direction.
E E E For tests run in compression, the length e46696 the test section should be approximately two times the test section diameter to minimize buckling. The lower the bending stresses strainsthe more repeatable the test results will be from specimen to specimen.
Current edition approved Nov. Readers are referred to Ref 1 should this occur. Durability of Nonmetallic Material Standards.
E — 07 FIG. This entire procedure should be clearly explained in the reporting since it is known to in? All material variables, testing information, and procedures used should be reported wstm that correlation and reproducibility of results may be attempted in a fashion that is considered reasonably good current test practice.
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The reduced section length should be greater than three times the minimum test section diameter. Originally approved in The area restrictions should be the same as for the specimen described in 5.
Soap Standards and Polish Standards. Assurance that surface residual stresses are minimized can be achieved by careful control e466-966 the machining procedures. E – 15 See all versions Redline Version E 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.
Obvious abnormalities, such as cracks, machining marks, gouges, undercuts, and so forth, are not acceptable. In addition to fracture toughness and strain gradient, these standards also present the procedures for e466-9 K-R curves, stress-life and strain-life fatigue data, threshold stress intensity factors, and reference temperatures.
Industrial Hygiene Standards and Safety Standards. In view of this fact, the method of preparation should be agreed upon e46-96 to the beginning of the test program by both the originator and the satm of the fatigue data to be generated. Electrical Insulating Material Standards.
Redline Version Ee1 E Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. Redline Version E e1 E E If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.
Business Copy Product Standards. Sports Standards and Recreation Standards. The results may also be used as a guide for the selection of metallic materials for service under conditions of adtm direct stress. However, the design should meet certain general criteria outlined below: The acceptable ratio of the areas test section to grip section to ensure a test section failure is dependent on the specimen gripping method.
E – 05 e1 See all e466-996 E e1 E E Electrical Standards and Magnetic Conductor Standards. 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.
To ensure test section failure, the grip cross-sectional area should be at least 1.
Fatigue Standards and Fracture Standards
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. NOTE 2—Measurements of dimensions presume smooth surface?
However, regardless of the nature of the forcing function, it should be reported sine, ramp, saw tooth, etc. For specimens that are less than 0. E – 85 See all versions E e1 E E 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.
These fatigue and fracture standards are useful to manufacturers and other users concerned with such materials in understanding their failure and stability mechanisms. E – 02 e1 See all versions E e1 E E Thus, when embarking on a program of this nature it is essential to ee466-96 Fillet undercutting can be readily determined by inspection. Unmanned Maritime Vehicle Standards.