ASTM E466-96

Standard Practice for Conducting Force Controlled Constant Amplitude Axial Fatigue Tests of Metallic Materials

SCOPE
1.1 This practice covers the procedure for the performance of axial force controlled fatigue tests to obtain the fatigue strength of metallic materials in the fatigue regime where the strains are predominately elastic, both upon initial loading and throughout the test. 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. This practice is not intended for application in axial fatigue tests of components or parts.  Note 1-The following documents, although not directly referenced in the text, are considered important enough to be listed in this practice: E739 Practice for Statistical Analysis of Linear or Linearized Stress-Life (S-N) and Strain-Life (e-N) Fatigue Data STP 566 Handbook of Fatigue Testing  STP 588 Manual on Statistical Planning and Analysis for Fatigue Experiments  STP 731 Tables for Estimating Median Fatigue Limits  2. Referenced Documents ASTM Standards:
E 3* Methods of Preparation of Metallographic Specimens  
E 467* Practice for Verification of Constant Amplitude Dynamic Loads on Displacements in an Axial Load Fatigue Testing System  
E 468* Practice for Presentation of Constant Amplitude Fatigue Test Results for Metallic Material  
E 739* Practice for Statistical Analysis of Linear or Linearized Stress-Life (S-N) and Strain-Life (e-N) Fatigue Data  
E 606* Practice for Strain-Controlled Fatigue Testing  
E 1012* Practice for Verification of Specimen Alignment Under Tensile Loading  
E 1150* Definitions of Terms Relating to Fatigue

General Information

• Status: Historical
• Publication Date: 31-Dec-1995
• Technical Committee: E08 - Fatigue and Fracture
• Drafting Committee: E08.05 - Cyclic Deformation and Fatigue Crack Formation

Relations

• Replaced By: ASTM E466-96(2002)e1 - Standard Practice for Conducting Force Controlled Constant Amplitude Axial Fatigue Tests of Metallic Materials
• Effective Date: 10-May-2002

Standards Content (Sample)

Designation: E 466 – 96
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Practice for
Conducting Force Controlled Constant Amplitude Axial
1
Fatigue Tests of Metallic Materials
This standard is issued under the fixed designation E 466; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Terminology
1.1 This practice covers the procedure for the performance 3.1 Definitions:
of axial force controlled fatigue tests to obtain the fatigue 3.1.1 The terms used in this practice shall be as defined in
strength of metallic materials in the fatigue regime where the Definitions E 1150.
strains are predominately elastic, both upon initial loading and
4. Significance and Use
throughout the test. This practice is limited to the fatigue
4.1 The axial force fatigue test is used to determine the
testing of axial unnotched and notched specimens subjected to
a constant amplitude, periodic forcing function in air at room effect of variations in material, geometry, surface condition,
stress, and so forth, on the fatigue resistance of metallic
temperature. This practice is not intended for application in
axial fatigue tests of components or parts. materials subjected to direct stress for relatively large numbers
of cycles. The results may also be used as a guide for the
NOTE 1—The following documents, although not directly referenced in
selection of metallic materials for service under conditions of
the text, are considered important enough to be listed in this practice:
repeated direct stress.
E 739 Practice for Statistical Analysis of Linear or Linearized Stress-
4.2 In order to verify that such basic fatigue data generated
Life (S-N) and Strain-Life (e-N) Fatigue Data
2
STP 566 Handbook of Fatigue Testing using this practice is comparable, reproducible, and correlated
STP 588 Manual on Statistical Planning and Analysis for Fatigue
among laboratories, it may be advantageous to conduct a
3
Experiments
round-robin-type test program from a statistician’s point of
4
STP 731 Tables for Estimating Median Fatigue Limits
view. To do so would require the control or balance of what are
often deemed nuisance variables; for example, hardness, clean-
2. Referenced Documents
liness, grain size, composition, directionality, surface residual
2.1 ASTM Standards:
stress, surface finish, and so forth. Thus, when embarking on a
5
E 3 Methods of Preparation of Metallographic Specimens
program of this nature it is essential to define and maintain
E 467 Practice for Verification of Constant Amplitude Dy-
consistency a priori, as many variables as reasonably possible,
namic Loads on Displacements in an Axial Load Fatigue
with as much economy as prudent. All material variables,
5
Testing System
testing information, and procedures used should be reported so
E 468 Practice for Presentation of Constant Amplitude Fa-
that correlation and reproducibility of results may be attempted
5
tigue Test Results for Metallic Material
in a fashion that is considered reasonably good current test
E 739 Practice for Statistical Analysis of Linear or Linear-
practice.
5
ized Stress-Life (S-N) and Strain-Life (e-N) Fatigue Data
4.3 The results of the axial force fatigue test are suitable for
5
E 606 Practice for Strain-Controlled Fatigue Testing
application to design only when the specimen test conditions
E 1012 Practice for Verification of Specimen Alignment
realistically simulate service conditions or some methodology
5
Under Tensile Loading
of accounting for service conditions is available and clearly
5
E 1150 Definitions of Terms Relating to Fatigue
defined.
5. Specimen Design
1
This practice is under the jurisdiction of ASTM Committee E-8 on Fatigue and
5.1 The type of specimen used will depend on the objective
Fracture and is the direct responsibility of Subcommittee E08.05on Cyclic Defor-
of the test program, the type of equipment, the equipment
mation and Fatigue Crack Formation.
Current edition approved Feb. 10, 1996. Published April 1996. Originally
capacity, and the form in which the material is available.
published as E 466 – 72 T. Last previous edition E 466 – 95.
However, the design should meet certain general criteria
2
Handbook of Fatique Testing, ASTM STP 566, ASTM, 1974.
3
outlined below:
Little, R. E., Manual on Statistical Planning and Analysis, ASTM STP 588,
ASTM, 1975. 5.1.1 The design of the specimen should be such that failure
4
Little, R. E., Tables for Estimating Median Fatigue Limits, ASTM STP 731,
occurs in the test section (reduced area as shown in Fig. 1 and
ASTM, 1981.
Fig. 2). The acceptable ratio of the areas (test section to grip
5
Annual Book of ASTM Standards, Vol 03.01.
1
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