BS 6980-6(1990) : AMD 8734
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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STRESS CORROSION TESTING - METHOD FOR THE PREPARATION AND USE OF PRE-CRACKED SPECIMENS
15-08-1995
23-11-2012
Committees responsible
National foreword
Method
1 Scope
2 Normative reference
3 Definitions
4 Principle
5 Specimens
6 Initiation and propagation of fatigue cracks
7 Procedure
8 Test report
Annex
A Use of notched specimens for stress corrosion tests
Figures
1 Pre-cracked specimen geometries for stress
corrosion testing
2a) Proportional dimensions and tolerances for
cantilever bend test pieces
2b) Proportional dimensions and tolerances for compact
tension test pieces
2c) Proportional dimensions and tolerances for double
cantilever beam test pieces
2d) Proportional dimensions and tolerances for T-type
wedge opening loaded test pieces
2e) Proportional dimensions and tolerances for C-shaped
test pieces
3 Chevron notch
4 Knife edges for location of displacement gauges
5a) Stress intensity factor solution for double
cantilever beam specimen [(W - a) indifferent]
5b) Stress intensity factor solution for T-type wedge
opening loaded specimen
5c) Stress intensity factor solution for cantilever
bend specimen
5d) Stress intensity factor solution for compact
tension specimens
5e) Stress intensity factor solution for C-shaped
specimens
6 Fracture plane identification
7 Envelope limiting size and form of notch and
fatigue crack
8 Position of environmental cells on fracture
mechanism specimens
9 Measurement location and relation between V and Vy
values
10 Comparison of "T-type" wedge opening loaded
specimen compliance at central loadline
11 Schematic representation of stress-corrosion data
produced by test method based on time to failure
This covers procedures for designing, preparing and using pre-cracked specimens for investigating susceptibility to stress corrosion. Recommendations concerning notched specimens are given. Pre-cracked specimens are not suitable for the evaluation of thin products such as sheet or wire and are generally used for thicker products including plate, bar and forgings. Pre-cracked specimens may be stressed quantitatively with equipment for application of a constant load or a monotonically increasing load or can incorporate a device to produce a constant displacement at the loading points. BS AMD 8734 RENUMBERS THIS STANDARD TO BS EN ISO 7539/6
| Committee |
ISM/NFM/8
|
| DevelopmentNote |
Superseded and renumbered by BS EN ISO 7539-6 (07/2004)
|
| DocumentType |
Standard
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy |
| Standards | Relationship |
| ISO 7539-6:2011 | Identical |
| BS 6980-5(1990) : 1990 AMD 1995 | STRESS CORROSION TESTING - METHOD FOR THE PREPARATION AND USE OF C-RING SPECIMENS |
| BS 6980-7(1990) : AMD 8733 | STRESS CORROSION TESTING - METHOD FOR SLOW STRAIN RATE TESTING |
| BS 6980-4(1990) : 1990 AMD 8713 | STRESS CORROSION TESTING - METHOD FOR THE PREPARATION AND USE OF UNIAXIALLY LOADED TENSION SPECIMENS |
| BS EN ISO 7539-4:1995 | Corrosion of metals and alloys. Stress corrosion testing Preparation and use of uniaxially loaded tension specimens |
| BS EN ISO 7539-5:1995 | Corrosion of metals and alloys. Stress corrosion testing Method for the preparation and use of C-ring specimens |
| BS 6980-1(1988) : 1988 AMD 8715 | STRESS CORROSION TESTING - GUIDE TO TESTING PROCEDURES |
| ISO 7539-1:2012 | Corrosion of metals and alloys — Stress corrosion testing — Part 1: General guidance on testing procedures |
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