ASTM-G168 › Historical Revision Information
Standard Practice for Making and Using Precracked Double Beam Stress Corrosion Specimens
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Scope
1.1 This practice covers procedures for fabricating, preparing, and using precracked double beam stress corrosion test specimens. This specimen configuration was formerly designated the double cantilever beam (DCB) specimen. Guidelines are given for methods of exposure and inspection.
1.2 The precracked double beam specimen, as described in this practice, is applicable for evaluation of a wide variety of metals exposed to corrosive environments. It is particularly suited to evaluation of products having a highly directional grain structure, such as rolled plate, forgings, and extrusions, when stressed in the short transverse direction.
1.3 The precracked double beam specimen may be stressed in constant displacement by bolt or wedge loading or in constant load by use of proof rings or dead weight loading. The precracked double beam specimen is amenable to exposure to aqueous or other liquid solutions by specimen immersion or by periodic dropwise addition of solution to the crack tip, or exposure to the atmosphere.
1.4 This practice is concerned only with precracked double beam specimen and not with the detailed environmental aspects of stress corrosion testing, which are covered in Practices G35, G36, G37, G41, G44, and G50.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Keywords
rack growth rate; double cantilever beam specimen;
To find similar documents by ASTM Volume:
03.02 (Corrosion of Metals; Wear and Erosion)
To find similar documents by classification:
77.060 (Corrosion of metals Surface treatment and coating, see 25.220)
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Document Number
ASTM-G168-00
Revision Level
2000 EDITION
Status
Superseded
Modification Type
New
Publication Date
May 10, 2000
Document Type
Practice
Page Count
10 pages
Committee Number
G01.06