40888 2017 eng 227 232 conferenceobject DVM Berlin 0 -- -- -- Thermal fluctuations do exist at extensometers but they remain quite often unknown because the temperature of the extensometer is not measured, recorded and assessed in strain controlled tests. The temperature fluctuation leads to thermal expansion of the gauge length of the extensometer resulting in force fluctuations as a materials response of the material tested in a strain controlled test. The thermal expansion leads to an error of the strain range applied. A case study was conducted to calculate the strain range error when the strain range was varied as well as the thermal fluctuation of the extensometer. The most important outcome of the study is that the strain range error can exceed the allowed limits if the thermal fluctuation of the extensometer is too high. Sources of thermal fluctuation of the extensometer were analyzed and identified. Suggestions are given to reduce the thermal fluctuation of the extensometer. Proc. Eighth Int. Conf. on Low Cycle Fatigue (LCF8) 978-3-9814516-5-8 LCF8 Dresden, Germany 27.06.2017 29.06.2017 Hellmuth Klingelhöffer eng uncontrolled Accuracy eng uncontrolled Strain error eng uncontrolled Temperature fluctuation eng uncontrolled Extensometer Ingenieurwissenschaften und zugeordnete Tätigkeiten Datei im Netzwerk der BAM verfügbar ("Closed Access") Graue Literatur