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ASTM E1012-05

Historical Revision

Standard Practice for Verification of Testing Frame and Specimen Alignment Under Tensile and Compressive Axial Force Application

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1.1 Included in this practice are methods covering the determination of the amount of bending that occurs during the application of tensile and compressive forces to notched and unnotched test specimens in the elastic range and to plastic strains less than 0.002. These methods are particularly applicable to the force application rates normally used for tension testing, creep testing, and uniaxial fatigue testing.


It has been shown that bending stresses that inadvertently occur due to misalignment between the applied force and the specimen axes during the application of tensile and compressive forces can affect the test results. In recognition of this effect, some test methods include a statement limiting the misalignment that is permitted. The purpose of this practice is to provide a reference for test methods and practices that require the application of tensile or compressive forces under conditions where alignment is important. The objective is to implement the use of common terminology and methods for verification of alignment of test machines, associated fixtures and test specimens.

Unless otherwise specified, axiality requirements and verifications should be optional when testing is performed for acceptance of materials for minimum strength and ductility requirements. This is because any effects especially from excessive bending, would be expected to reduce strength and ductility properties and give conservative results. There may be no benefit from improved axiality when testing high ductility materials to determine conformance with minimum properties. Whether or not to improve axiality should be a matter of negotiation between the material producer and the user.

SDO ASTM: ASTM International
Document Number E1012
Publication Date June 1, 2005
Language en - English
Page Count 11
Revision Level 05
Supercedes
Committee E28.01
Publish Date Document Id Type View
Dec. 15, 2019 E1012-19 Revision
July 1, 2014 E1012-14E01 Revision
July 1, 2014 E1012-14 Revision
June 1, 2012 E1012-12E01 Revision
June 1, 2012 E1012-12 Revision
June 1, 2005 E1012-05 Revision
Aug. 10, 1999 E1012-99 Revision