Fatigue strength test Fatigue strength of bars subject to cyclic bending load; stress-number (S-N) diagram Features - different specimens show the influence of notching and surface quality - continuous adjustment of the load amplitude - automatically shuts down when the specimen fractures Learning objectives/experiments - fatigue strength of bars under reverse bending stress - influence of different fillet radii and surface qualities on the fatigue strength - Wöhler diagram Specification [1] basic principles of fatigue strength testing [2] driven by electric motor [3] automatically shuts down when the specimen fractures [4] load application device with sliding floating bearing, threaded spindle with hand wheel, spring balance [5] steel cylindrical specimens, various fillet radii [6] speed measured by contactless inductive speed sensor or electronic counter for load cycles [7] digital counter display [8] protective cover for safe operation [9] system for data acquisition (WP 140.20) available as an option Technical data Electric motor - speed: 2800min-1 - power: 0,37kW Load force - 0...300N Electronic load counter - 8-digit - switchable to indicate speed Specimens - material: steel - 3 different fillet radii 230V, 50Hz, 1 phase 230V, 60Hz, 1 phase; 120V, 60Hz, 1 phase UL/CSA optional LxWxH: 840x410x600mm Weight: approx. 31kg