Metal 3D Printer
Within the framework of the program "Major Equipment of the Federal States", major equipment at universities and university hospitals is financed by the Federal States or universities. On behalf of the federal states, the German Research Foundation (DFG) evaluates large-scale equipment from this program that is intended for use in
Scanning electron microscope with EDX, EBSD and STEM
The German Research Foundation (DFG) is funding universities of applied sciences (HAW) in three funding rounds within the framework of the call for proposals "Major Equipment Campaign for Universities of Applied Sciences" in order to expand and use the existing good equipment infrastructure spec
Resonance pulsator
The German Research Foundation (DFG) provides investment funds for the proportional (50%) financing of large-scale research equipment at universities within the framework of the funding program "Large-scale Research Equipment" according to Art.91b GG. The basis for this is the Implementation Agreement on Research Buildings, Larg
Availability of data
Within the scope of research projects, the raw data commonly used in materials testing are generated in the form of predominantly open formats (e.g. ASCII, csv or TIF). During data collection, not only experimental findings and data derived from them are taken into account, but also the methods used. All research data are comp
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SteBLife – A new method for the time- and cost-efficient provision of fatigue data for the safe design of cyclically stressed components and parts for plant and machine engineering
Abstract – The service life of materials and components is limited when they are subjected to repeated mechanical stresses, which is why
Introduction
Weight-optimized component design and the resulting estimation of the service life or service life of metallic materials require a comprehensive understanding of fatigue processes and the systematic investigation of fatigue behavior. For reasons of time and cost alone, many components can usually neither be built as prototypes nor tes
Experimental setup and material
The stress-controlled single-stage tests were carried out on a Shimadzu type EHF-U servo-hydraulic test system with a maximum load of 50 kN, a frequency of f = 5 Hz, a sinusoidal load-time function, and a load ratio of R = -1 at room temperature with RT = 25°C.
The specimens were stressed to failure or to reach th
Lifetime calculation according to the SteBLife method
The specimens used in SteBLife are characterized by a stepped geometry with different test section diameters, which leads to different local stress amplitudes along the specimen axis under cyclic loading (Fig. 2, bottom left).
The fatigue tests are carried out at a constant force amplitu
Ansprechpartner
Summary
The paper shows how non-destructive measurement methods based on temperature can be used in the context of short-term procedures for service life calculation. The procedure is presented using the example of normalized carbon steel grade C45E and the SteBLife method.
SteBLife opens up the possibility of providing signifi
For this purpose, measurements on fatigue specimens are carried out on the steel 20MnMoNi5-5 in a service relevant heat treatment condition, in which the residual stresses are determined conventionally using an X-ray diffractometer and then the results are used in order to calibrate the µmagnetic measuring system.The surface roughness is measured
