A5051122008- Ultrasonics and Acoustic Wave Propagation
- Non-Destructive Testing Techniques
- Nuclear Physics and Applications
- Microstructure and Mechanical Properties of Steels
- Welding Techniques and Residual Stresses
- Thermography and Photoacoustic Techniques
- Hydrogen embrittlement and corrosion behaviors in metals
- Medical Imaging Techniques and Applications
- Advanced X-ray and CT Imaging
- Nuclear Materials and Properties
- Engineering Applied Research
- Geophysical Methods and Applications
- Parallel Computing and Optimization Techniques
- Nuclear reactor physics and engineering
- Fatigue and fracture mechanics
- Sensor Technology and Measurement Systems
- Ion-surface interactions and analysis
- Pigment Synthesis and Properties
- Point processes and geometric inequalities
- Advanced MRI Techniques and Applications
- Security and Verification in Computing
- Distributed systems and fault tolerance
- Advanced Welding Techniques Analysis
- Ergonomics and Human Factors
- Digital Holography and Microscopy
RWTH Aachen University
2023-2024
Institute of Automation
2023
National Research Tomsk State University
2014
Saarland University
2014
Tomsk Polytechnic University
2013-2014
Fraunhofer Institute for Nondestructive Testing
1994-2008
Fraunhofer Society
2006
Siemens (Germany)
1989
Kraftanlagen (Germany)
1983-1987
Max Planck Institute for Chemistry
1974-1975
Different signal processing and image reconstruction techniques are applied in ultrasonic non-destructive material evaluation. In recent years, rapid development the fields of microelectronics computer engineering lead to wide application phased array systems. A new technique, called "Sampling Phased Array" has been developed Fraunhofer Institute for nondestructive testing. It realizes unique approach measurement signals. The sampling principle make use elementary waves generated by...
For more than 6 years, the automated ultrasonic and eddy-current systems for inspection of railroad wheel sets, developed by Fraunhofer IZFP TEG, have been field-hardened through daily operation at various maintenance facilities Deutsche Bahn (DB).The testing stations are equipped with IZFP's multi-channel electronics, a modular PC integrated system operating inside 19" rack-mounted industrial computers.Special requirements new installations stationary (AURA) underfloor (UFPE) called...
The paper presents a new method to determine the temporal position of received signal and description mathematical apparatus method. result research indicates dependence measurement error from distance between transmitter reflector. It is also demonstrated comparison tested with single comparator Besides, according graph data it has been inferred that accuracy two-frequency increased more than two times.
Low microdefect level is essential for ensuring the performance of material. Early detection areas allows estimation residual life constructions and prevents catastrophic failures components. Ultrasound laser interferometry provides a unique inspection method that enables study visualisation processes elastic wave interaction with microdefects embedded in solids, non-contact way. In present paper, distribution acoustic fields on surface metal disks obtained was investigated use Doppler...
The memory-safe systems programming language Rust is gaining more and attention in the operating system development communities, as it provides memory safety without sacrificing performance or control. However, these guarantees only apply to safe subset of Rust, while bare-metal requires some parts program be written unsafe Rust. Writing abstractions for software that are sound, meaning they guarantee absence undefined behavior thus uphold invariants can challenging. Producing sound code,...
Previous standards for the manufacturing inspection of railroad wheels using ultrasound, such as UIC 812, have been replaced by new standards, example EN 13262 and RD32.144-2000, both requiring ultrasonic testing in immersion technique. These require development an technique 100% coverage wheel rim hub, special cases straight curved disks. In order to encompass a large variety designs, handling techniques should be capable dealing with diameters ranging from 600 mm 1300 (23 51) at cycles 1 4...
Today, large compute clusters increasingly move towards heterogeneous architectures by employing accelerators, such as GPUs, to realize ever-increasing performance. To achieve maximum performance on these architectures, applications have be tailored the available hardware using special APIs interact with resources, CUDA for NVIDIA GPUs. Simultaneously, unikernels emerge a solution increasing overhead introduced complexity of modern operating systems and their inability optimize specific...