ISO 18338:2015
Metallic materials — Torsion test at ambient temperature
ISO 18338:2015 specifies the method for torsion test at room temperature of metallic materials. The tests are conducted at room temperature to determine torsional properties.
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and designations
5 Principle of test
6 Test piece
6.1 Shape and dimensions of test pieces
6.1.1 Cylinder test pieces
6.1.2 Tube test pieces
6.1.3 Preparation of test pieces
7 Determination of original cross-sectional dimensions
7.1 Cylinder test pieces
7.2 Tube test pieces
8 Accuracy of the testing apparatus
8.1 Testing machine
8.2 Troptometer
9 Conditions of testing
10 Determination of the properties
10.1 Calculations of shear stress and shear strain
10.2 Determination of the slope of linear portion of shear stress-shear strain curve
10.3 Torsional proof strength, plastic torsion
10.4 Upper torsional yield strength and the lower torsional yield strength
10.5 Determination of torsional strength
10.6 Determination of maximum plastic shear strain
11 Test report
Annex A (informative) Determination of the reference proof strength, plastic torsion and reference torsional strength
Bibliography
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and designations
5 Principle of test
6 Test piece
6.1 Shape and dimensions of test pieces
6.1.1 Cylinder test pieces
6.1.2 Tube test pieces
6.1.3 Preparation of test pieces
7 Determination of original cross-sectional dimensions
7.1 Cylinder test pieces
7.2 Tube test pieces
8 Accuracy of the testing apparatus
8.1 Testing machine
8.2 Troptometer
9 Conditions of testing
10 Determination of the properties
10.1 Calculations of shear stress and shear strain
10.2 Determination of the slope of linear portion of shear stress-shear strain curve
10.3 Torsional proof strength, plastic torsion
10.4 Upper torsional yield strength and the lower torsional yield strength
10.5 Determination of torsional strength
10.6 Determination of maximum plastic shear strain
11 Test report
Annex A (informative) Determination of the reference proof strength, plastic torsion and reference torsional strength
Bibliography