A5008313163- Mechanical Behavior of Composites
- Fatigue and fracture mechanics
- Ultrasonics and Acoustic Wave Propagation
- Silicone and Siloxane Chemistry
- Structural Load-Bearing Analysis
- Epoxy Resin Curing Processes
- Structural Health Monitoring Techniques
- Numerical methods in engineering
- Cellular and Composite Structures
- Fiber-reinforced polymer composites
- Manufacturing Process and Optimization
- Engineering and Materials Science Studies
- Injection Molding Process and Properties
- Advanced machining processes and optimization
- Economic and Social Issues
- Microstructure and Mechanical Properties of Steels
- Historical Geography and Cartography
- Probabilistic and Robust Engineering Design
- Metal Alloys Wear and Properties
- Tribology and Wear Analysis
- German Literature and Culture Studies
- Metallurgy and Material Forming
- Structural Behavior of Reinforced Concrete
- Structural Response to Dynamic Loads
- Composite Structure Analysis and Optimization
RWTH Aachen University
2018-2023
Johns Hopkins University
1992
The objective of this work is to investigate the use metallurgical gradients (MG) in design structural components made ductile cast iron (DCI). MG have been realized study by locally varying pearlite fraction matrix. Exemplarily, allowable cyclic load for a drive shaft as well static displacement are calculated. performed calculations based on and strength data four different DCI with amounts ranging from 0% 96.8%. To show advantage purposeful usage local MG, ten configurations examined...
In-situ testing as a method for fracture characterisation of adhesives has received increased attention in recent years. Previous studies show that the properties adhesive determined by in-situ testings are influenced bond-line thickness. In this work, effect thickness on two-component epoxy ductile under mixed-mode loading is investigated. Double Cantilever Beam (DCB) and Mixed-Mode Bending (MMB) tests with different ratios were conducted. A recently proposed data reduction technique based...
Using backface strain gauge is a very common technique for structural health monitoring in the adhesively bonded joints while loading. Finite Element (FE) techniques used failure prediction of such are normally validated against load not measurements. However, measurement can be highly influenced by different parameters (such as tolerance thickness bondline, misalignment, etc.). In this work, applicability new location placing back-face gauges on single lap (SLJs) damage detection examined....
The stiffness of adhesively bonded single-lap joints is fundamental importance in the static and dynamic sizings engineering structures. Nevertheless, existing analytical determination models show a large discrepancy when compared to experimental results or finite element analyses. Within present paper, novel approach for under tensile loading derived, which takes out-of-plane deformation adherends into account. In order provide comprehensive model validation, joint experiments with two...
Critical strain energy release rate (Gc) is considered as an important fracture characteristic parameter by which the state of integrity bonded structures can be assessed. Although majority components in industrial applications are under mixed-mode loading, characterization adhesives loadings has received much less attention literature compared with pure mode I and II. Besides, there still open questions regarding influential parameters on (such adhesive layer thickness), especially when...
ASBTRACTThe application of adhesively bonded joints has increased in a large variety different industrial sectors over the last decades. In comparison to other joining techniques, can offer easier assembly, weight reduction, lower stress concentration, etc. Additive Manufacturing (AM) as transformational approach Industry 4.0 even improve structural performance such terms more making homogenous stresses adhesive layer area. this work, an single lap joint (SLJ) with metallic sandwich...
The crushing of crash boxes is a complex phenomenon characterized by strong interaction structural and material properties. Many attempts to improve their energy absorption adopting one aspect resulted in unacceptable unprogressive bucking. Thus, special considerations are required for box optimization including both effects. In this study, the behavior analyzed new design approach introduced fulfill these requirements. Currently, components, processes, materials mainly developed...
Considering the aerospace sector, use of adhesively bonded joints is constantly increasing over last decades. Due to its lightweight and capability joining various materials with different coefficient thermal expansion, this technique offers many benefits conventional methods like rivets, screws welding. On other hand, structural adhesives consists polymer chains that can be severely affected by environment. An example such an environmental effect interaction adhesive ionizing radiation in...
Currently, components, processes and materials are mainly developed independently. However, to exploit the full potential of modern in component design, integrative development work is necessary. Component performance-based requirements corresponding local material properties must be taken into account. In this work, a component-driven approach therefore an inverted process chain presented demonstrated on performance crash box, produced from DP600 steel. This aimed increase energy absorption...