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State of the art of the torsion test for determining flow curves
Author(s) -
Gräber Andreas,
Pöhlandt Klaus
Publication year - 1990
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.199000334
Subject(s) - torsion (gastropod) , test (biology) , flow (mathematics) , engineering drawing , mechanics , engineering , mathematics , geometry , geology , physics , paleontology , medicine , surgery
The theory and practice of the torsion test both at room temperature and at elevated temperatures are described. The calculation of the local shear stress and shear strain at a “critical radius” gives more accurate results than the conventional test evaluation for the surface of the specimen. Recommendations are given for the optimum specimen geometry depending on the temperature. Sources of error and uncertainty are discussed.