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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Every effort should be made to prevent the occurrence of misalignment, either due to twist rotation of the gripsor to a displacement in their aastm of symmetry.
ASTM E Conducting Force Controlled Constant Amplitude Axial Fatigue Tests_百度文库
Glass Standards and Ceramic Standards. As a cautionary note, should localized yielding occur, signi? For example, specimen alignment is of utmost importance and FIG. For specimens that are less than 0. Fatigue Standards and Fracture Standards. Specimens e4466-96 be cleaned prior to testing with solvent s non-injurious and non-detrimental to the mechanical properties of the material in order to remove any surface oil?
Obvious abnormalities, such as cracks, machining marks, gouges, undercuts, and so forth, are not acceptable. In view of this, no maximum ratio of area grip to test section should apply. Otherwise, the same dimensional relationships should apply, as in the case of the specimens described in 5. The acceptable ratio of the areas test section to grip section to ensure a test section failure is dependent on the specimen gripping method.
Paper Standards and Packaging Standards. E E e1 E E – 05 e1 See all versions E e1 E466-69 E Fillet undercutting can be readily determined by inspection.
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. Oxygen Enriched Atmospheres Standards. Fire Standards and Flammability Standards. This practice is not intended for application in axial fatigue tests of components or parts.
One exception may be where these parameters are under study. The reduced section length should be greater than three times the minimum test section diameter. In reporting the results, state the criterion selected for de?
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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.
Historical Version s – view previous versions of standard.
Regardless of the machining, grinding, or polishing method used, the? E – 85 See all versions 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 E4666-96 on Standards, at the address shown below.
Redline Version E e1 E E E E E 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, transverse, radial, and so forth.
ASTM’s fatigue and fracture standards provide the appropriate procedures for carrying out fatigue, fracture, and other related tests on specified materials.
The results may also be used as a guide for the selection of metallic materials for service under conditions of repeated direct stress. For tests run in compression, the length of the test section e46-96 be approximately two times the test section diameter to minimize e4669-6. 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. Corrosion Standards and Wear Standards.
This practice is not intended for application in axial fatigue tests of components or parts. E e1 E E As a conservative general measure, this procedure is recommended unless: Ee1 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.
Also, Refsalthough they pertain to straincontrolled testing, may prove of interest since they deal with sheet specimens approximately 0.
Ea Ea Ee1 E 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.