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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Industrial Hygiene Standards and Safety Standards. It is important that the accuracy of alignment be kept consistent from specimen to specimen. This practice is not intended for application in axial fatigue tests of components or parts. In view of this, no maximum ratio of area grip to test section should apply. 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.
NOTE 2—Measurements of dimensions presume smooth surface?
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. E – 10 See all versions E A caveat is given regarding the gage section with sharp edges that is, square or rectangular cross section since these are inherent weaknesses because the slip of the grains at sharp edges is not con?
For most conventional grips, good alignment must come about from very careful attention to design detail. Historical Version s – view previous versions of standard. E — 07 FIG. Ee1 E Ee1 E 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?
Threaded end specimens may prove difficult to align and failure often e466–96 at these stress f466-96 when testing in the life regime of interest in this practice. 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. Search and Rescue Operations Standards. The results may also be used as a guide for the selection of metallic materials for service under conditions of repeated direct stress.
Fatigue Standards and Fracture Standards
E – 04 See all versions E E e1 E The trial test specimen should be turned about its axis, installed, and checked for each s466-96 four orientations within the? Soap Standards and Polish Standards. Because of this, a circular cross section may be preferred if material form lends itself to this con?
This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?
Link e4466-96 Active This link will always route to the current Active version of the standard. The test section length should be approximately two to three times the test section width of the specimen. To ensure test section failure, the grip cross-sectional area should be at least 1.
ASTM E Conducting Force Controlled Constant Amplitude Axial Fatigue Tests_百度文库
Otherwise, the sections may be either of two types: E — 07 6. A number in parentheses indicates the satm of last reapproval. Cement Standards and Concrete Standards. E – 10 See all versions E Ee1 E Aetm specimens that are less than 0.
Ra, in the longitudinal direction. 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.
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. Thus, when embarking on a program of this nature it is essential to define and maintain consistency a priori, as many variables as reasonably possible, with as much economy as prudent.
Current edition approved Nov. Since e466-96 preparation can strongly in?
For rectangular cross section specimens, alignment should be checked by placing longitudinal strain gages on either side of the trial specimen at the minimum width location. For example, specimen alignment is of utmost importance and FIG. In the typical regime e4666-96 10?
This practice ashm not intended for application in axial fatigue tests of components or parts. Assurance that surface residual stresses are minimized can be achieved by careful control of the machining procedures.