A5077107848- Fatigue and fracture mechanics
- Aluminum Alloy Microstructure Properties
- Advanced Welding Techniques Analysis
- Structural Load-Bearing Analysis
- Metal Alloys Wear and Properties
- Metallurgy and Material Forming
- Surface Treatment and Residual Stress
- Welding Techniques and Residual Stresses
- Material Properties and Applications
- Aluminum Alloys Composites Properties
- Engineering and Materials Science Studies
- Metal Forming Simulation Techniques
- Mechanical Behavior of Composites
- Mechanical stress and fatigue analysis
- Material Properties and Failure Mechanisms
- Fire effects on concrete materials
- High Temperature Alloys and Creep
- Microstructure and Mechanical Properties of Steels
- Mechanical Failure Analysis and Simulation
- Titanium Alloys Microstructure and Properties
- Mechanical and Thermal Properties Analysis
- Engineering Structural Analysis Methods
- Non-Destructive Testing Techniques
- Metallurgical Processes and Thermodynamics
- Gear and Bearing Dynamics Analysis
Montanuniversität Leoben
2014-2023
Christian Doppler Laboratory for Thermoelectricity
2019
Swiss Tunnelling Society
2009-2019
Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine
2013
Kaiser-Franz-Josef-Spital
2010-2012
Lightweight-design of welded high-strength steel structures in cyclic service necessitates the use post-treatment methods like high frequency mechanical impact treatment (HFMI). Service loads during operation mostly consist variable amplitudes, whereat recommendations are only available for as-welded condition. Therefore, this paper deals with effect amplitude block loading on fatigue strength HFMI-treated T-joints. An evaluation real damage sum exhibits characteristic distinctions to...
Enhancing the lightweight potential of mobile steel structures by applying high-strength steels and reducing sheet thicknesses leads to a significant increase energy effectiveness reduction noxious emissions during operation. However, due this yield tensile strength, fracture toughness decreases notch sensitivity rises. Hence, local weld geometry becomes more important, especially in case ultra steels. This paper deals with detection assessment common geometric defects, such as undercuts,...
The majority of fatigue tests welded specimens is based on shop-made samples generally exhibiting minor misalignment. Due to the challenge ensuring misalignment-free joints in industrial manufacturing processes, investigations focussing effect misalignment strength are important. Therefore, this paper deals with influence axial resistance butt-welded ultra high-strength steel specimen. In addition, high frequency mechanical impact treatment (HFMI) performance researched. course experimental...
The division of the total fatigue life into different stages such as crack initiation and propagation is an important issue in regard to improved assessment especially for high-strength welded joints. transition between these fluent, whereas threshold two phases referred technical initiation. This work presents a procedure track during tests ultra steel method utilizes digital image correlation calculate distortion field specimens’ surface enabling identification measurement cracks along...
The concept of two-disc model testing has proven to deliver valuable information for the applicability new technologies, such as surface structuring, coatings, alternative fluids, or advanced materials, in actual machine elements. In this article an with sophisticated control technology dry and lubricated setup is presented. (i) All involved components are controlled via a powerful PLC unit leading possibility realising extremely accurate SRRs down <mml:math...
In general, distortion has significant effects on the assembly process of welded structures and remarkable influences strength welds. Therefore, this work focuses effect angular welding fatigue to improve transferability specimen results components. Experimental investigations cover manufacturing testing three single-sided transversal stiffeners series exhibiting different distortions. The test as-welded show a distinct link between performance initial distortion. However, in case high...
This work applies Taylor's Theory of Critical Distances (TCD) to assess the fatigue strength defect-afflicted cast steel components made G21Mn5+N. Based on radiographs complexly shaped spatial imperfections, established TCD-framework leads a sound agreement numerical and experimental strength. Moreover, novel assessment methodology is presented, which bases projected planar defect shape, featuring an engineering-feasible design method without need extensive simulations. About one-hundred...
Cast parts usually inherit internal defects such as micro shrinkage pores due to the manufacturing process. In order assess fatigue behaviour in both finite-life and long-life regions, this paper scientifically contributes towards a defect-based design model. Extensive fracture mechanical tests were conducted whereby crack initiating defect size population was fractographically evaluated. Complementary situ X-ray computed tomography scans before during testing enabled an experimental...
The fatigue strength of welded joints is generally irrespective from the base material yield due to notch effects at weld toe or root, tensile residual stresses by thermo-mechanical joining process and significant changes in local properties within heat-affected zone. An effective way increase potential light-weight design exhibits application post-weld treatments. Mechanical methods as high-frequency mechanical impact treatment (HFMI) reduces geometrical notch, introduces compressive...