BS 7774:1994
Current
The latest, up-to-date edition.
Threaded fasteners. Axial load fatigue testing. Test methods and evaluation of results
Hardcopy , PDF
English
08-15-1994
Committees responsible
National foreword
Specification
1 Scope
2 Normative references
3 Symbols and their designations
4 Principle
5 Apparatus
6 Test procedure
7 Evaluation of results
8 Test report
Tables
1 Symbols and their designations
2 Order system for the statistical evaluation of 8
fatigue tests with a stress amplitude of sigma a =
150 N/mm2 in the finite life range
3 Example of the evaluation of fatigue tests by the
staircase method
Figures
1 Fixture without insert
2 Fixture with insert
3 Load verification stud
4 Stress distribution in the shank of the load
verification stud
5 Threaded test adapter
6 Test washer (assembled)
7 Location of test nut
8 Probability of failure pf and number of stress
cycles in the finite life range, determined on the
basis of 8 fatigue tests with sigma a = 150 N/mm2
9 Example of the execution and evaluation of fatigue
tests according to the boundary method
10 Wohler curve (S/N curve) sigma a = f(N)
11 Example of basic pattern of combined test method
with 14 specimens
12 Example of Wohler curve (S/N curve)
13 Haigh diagram
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