Test methods for the continuous recording of stress and strain at high temperatures after melting of samples in situ
To achieve greater economy and better product quality from continuous casting, the management of the process has to be continually improved. Potential faults, hot crack formation in particular, need to be kept to a minimum by appropriate choice of parameters. For quality control and the design of new installations mathematical models are being developed to calculate the stress and strain states of the casting. In this research project a test method was developed with which to determine the true stress vs. true strain curve at high temperatures after melting of the hot tensile test sample and solidification in situ. Finite element calculation was then used to provide basic data for calculating stress and strain conditions in the shell. With the measurement and evaluation techniques developed, based on measurement of eddy currents, the cross-section of a sample can be continuously monitored throughout the hot tensile test. From the voltages of several measuring coils the cross-sections of the hot tensile test sample are established by calibration for the entire test series and the true stress vs. strain curve can then be determined up to the moment of fracture.
Bibliographic Reference: EUR 14353 DE (1993) 85 pp., FS, ECU 11.50
ISBN: ISBN 92-826-5957-7
Record Number: 199310797 / Last updated on: 1994-11-29
Original language: de
Available languages: de