caa a22 4500 465750699 CHVBK 20180323111833.0 cr unu---uuuuu 170327e19900301xx s 000 0 eng 10.1007/BF02322694 doi (NATIONALLICENCE)springer-10.1007/BF02322694 High-speed stochastic fatigue testing [Elektronische Daten] [R. Brincker, J. Sørensen] Good stochastic fatigue tests are difficult to perform. One of the major reasons is that ordinary servohydraulic loading systems realize the prescribed load history accurately at very low testing speeds only. If the speeds used for constant amplitude testing are applied to stochastic fatigue testing, quite unacceptable errors are introduced. Usually this problem is solved by running the tests at very low speeds and by editing the load history in order to reduce the duration of the test. In this paper a new method for control of stochastic fatigue tests is proposed. It is based on letting the analog control device remain as the basic control mechanism in the system, but distorting the input signal by computer in order to minimize the errors of the load history extremes. The principle proves to be very efficient to reduce all kinds of system errors and has shown to be able to increase the allowable speed by a factor from 10 to 30. Society for Experimental Mechanics, Inc., 1990 Brincker R. University of Aalborg, Sohngaardsholmsvej 57, DK-9000, Aalborg, Denmark aut Sørensen J. University of Aalborg, Sohngaardsholmsvej 57, DK-9000, Aalborg, Denmark aut Experimental Mechanics Kluwer Academic Publishers 30/1(1990-03-01), 4-9 0014-4851 30:1<4 1990 30 11340 https://doi.org/10.1007/BF02322694 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02322694 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Brincker R. University of Aalborg, Sohngaardsholmsvej 57, DK-9000, Aalborg, Denmark aut NATIONALLICENCE 700 1- Sørensen J. University of Aalborg, Sohngaardsholmsvej 57, DK-9000, Aalborg, Denmark aut NATIONALLICENCE 773 0- Experimental Mechanics Kluwer Academic Publishers 30/1(1990-03-01), 4-9 0014-4851 30:1<4 1990 30 11340 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer