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Chapter and Conference Paper
Deep Rolling for Tailoring Residual Stresses of AA2024 Sheet Metals
Deep Rolling as a well-known mechanical surface treatment process is investigated with the objective to tailor residual stress profiles over the sheet metal thickness. Experiments are performed in a milling po...
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Article
Open AccessDeformation by design: data-driven approach to predict and modify deformation in thin Ti-6Al-4V sheets using laser peen forming
The precise bending of sheet metal structures is crucial in various industrial and scientific applications, whether to modify deformation in an existing component or to achieve specific shapes. Laser peen form...
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Article
Open AccessOn the Effect of Testing Frequency on High and Very High Cycle Fatigue Behavior of AA2024-T3, Ti-6Al-4V, and Inconel 718
An increase of testing frequency to reduce the testing time could affect the fatigue behavior of metallic materials. The current paper investigates the effect of testing frequency on the high and very high cyc...
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Article
Open AccessPhase-field modelling for fatigue crack growth under laser shock peening-induced residual stresses
For the fatigue life of thin-walled components, not only fatigue crack initiation, but also crack growth is decisive. The phase-field method for fracture is a powerful tool to simulate arbitrary crack phenomen...
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Article
On the influence of laser beam welding parameters for autogenous AA2198 welded joints
The effects of different autogenous laser beam welding process parameters on the fusion zone (FZ) geometry, microstructure, and tensile mechanical properties were investigated for 5-mm-thick AA2198 alloy sheet...
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Chapter and Conference Paper
A Modeling Approach for the Fatigue Behavior of Laser Drilled Micro Perforated Structural Panels
With hybrid laminar flow control the drag can be reduced for airfoils. This is done by boundary layer suction through millions of small holes in the skin panels. The goal of this paper is to assess the impact ...
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Chapter and Conference Paper
Probabilistic Reliability Assessment of a Component in the Presence of Internal Defects
Structural strength may degrade during the service life of an aircraft due to undetected material defects or accidental damages. Additively manufactured or welded structures are particularly susceptible to fat...
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Chapter and Conference Paper
Fatigue Crack Propagation Influenced by Laser Shock Peening Introduced Residual Stress Fields in Aluminium Specimens
Laser Shock Peening (LSP) enables the generation and modification of residual stresses deep below the surface of metallic components. LSP-induced residual stress profiles provide penetration depths of compress...
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Article
Application of design of experiments for laser shock peening process optimization
Laser shock peening—a very promising life enhancement technique—has demonstrated great success regarding the improvement of fatigue behavior via deep compressive residual stresses. However, the prediction and ...
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Article
Open AccessCorrection to: Metallurgical aspects of joining commercially pure titanium to Ti-6Al-4V alloy in a T-joint configuration by laser beam welding
The article Metallurgical aspects of joining commercially pure titanium to Ti-6Al-4V alloy in a T-joint configuration by laser beam welding by Fedor Fomin, Martin Froend, Volker Ventzke, Pedro Alvarez, Stefan ...
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Article
Open AccessMetallurgical aspects of joining commercially pure titanium to Ti-6Al-4V alloy in a T-joint configuration by laser beam welding
The present paper focuses on the metallurgical and microstructural characterization of the laser beam-welded T-joints between commercially pure titanium (CP-Ti) and Ti-6Al-4V alloy. The weld regions were compr...
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Article
Phase Transformations During Solidification of a Laser-Beam-Welded TiAl Alloy—An In Situ Synchrotron Study
An in situ highly time-resolved, high-energy X-ray diffraction investigation was carried out to observe the phase transformations of a TiAl alloy during laser beam welding. The diffraction patterns are recorded e...
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Article
Phase Transformation and Residual Stress in a Laser Beam Spot-Welded TiAl-Based Alloy
The microstructure, chemical composition, residual stress, and lattice parameter evolution of the welding zone (WZ) and heat-affected zone (HAZ) of a laser-beam-welded TiAl-based alloy were investigated. It wa...
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Article
Open AccessProcess Optimization of Dual-Laser Beam Welding of Advanced Al-Li Alloys Through Hot Cracking Susceptibility Modeling
Laser welding of advanced Al-Li alloys has been developed to meet the increasing demand for light-weight and high-strength aerospace structures. However, welding of high-strength Al-Li alloys can be problemat...
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Article
Laser Weldability of High-Strength Al-Zn Alloys and Its Improvement by the Use of an Appropriate Filler Material
Heat-treatable Al-Zn alloys are promising candidates for use as structural lightweight materials in automotive and aircraft applications. This is mainly due to their high strength-to-density ratio in compariso...
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Article
Effect of Post-weld Heat Treatment on Microstructure and Mechanical Properties of Laser Beam Welded TiAl-based Alloy
Post-weld heat treatment is carried out on the laser beam welded γ-TiAl-based alloy Ti-48Al-1Cr-1.5Nb-1Mn-0.2Si-0.5B (at. pct). The macro/microstructure and mechanical properties of both as-welded and heat-treate...
