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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E — 07 fatigue test the permanent sstm of the unbroken but tested specimens for example, percent change in cross-section area of test section should be reported.
E e1 E S466-96 E In view of this, no maximum ratio of area grip to test section should apply. Fatigue Standards and Fracture Standards ASTM’s fatigue and fracture standards provide the appropriate procedures for carrying out fatigue, fracture, and other related tests on specified materials.
Thus, when embarking on a program of this nature it is essential to de? However, the design should meet certain general criteria outlined below: NOTE 1—The following documents, although not directly referenced in the text, are considered important enough to be listed in this practice: Surfaces intended to be parallel and straight should be in a manner consistent with 8.
The storage medium should generally be removed before testing using appropriate solvents, if necessary, without adverse effects upon qstm life of the specimens.
Ee1 E Ee1 E Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.
Industrial Hygiene Standards and Safety Standards.
Redline Version Ee1 E E – 04 See all versions E E e1 E 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. Current edition approved Nov.
The area restrictions should be the same as for the specimen described in 5. These tests are conducted to examine and evaluate the behavior, susceptibility, and extent of resistance of certain materials to sharp-notch tension, tear, axial fatigue, strain-controlled fatigue, surface crack tension, creep crack, and residual strain.
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. Obvious abnormalities, such as cracks, machining marks, gouges, undercuts, and so forth, are not acceptable.
ASTM’s fatigue and fracture standards provide the appropriate procedures for carrying out fatigue, fracture, and other related tests qstm specified materials. One exception may be where these parameters are under study.
ASTM E Conducting Force Controlled Constant Amplitude Axial Fatigue Tests_百度文库
Originally approved in Medical Device Standards and Implant Standards. Ea Ea Ee1 E 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.
Sports Standards and Recreation Standards. The acceptable ratio of the areas test section to grip section to ensure a test section failure is dependent on the specimen gripping method.
This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Road Standards and Paving Standards. 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.
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. This is a particular danger in soft materials wherein material can be smeared over tool marks, thereby creating a potentially undesirable in? The lower the bending stresses strainsthe more repeatable the test results will be from specimen to 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. 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.
Ee1 E e2 E e1 E E In the typical regime of 10? Fatigue Standards and Fracture Standards. The results may also be used as a guide for the selection of metallic materials for service under conditions of repeated direct stress.
E – 10 See all versions E Durability of Nonmetallic Material Standards. Resilient Floor Covering Standards. To r466-96 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.
Readers are referred to Ref 1 should this occur.