A5033867562- Advanced ceramic materials synthesis
- Advanced materials and composites
- Fatigue and fracture mechanics
- High-Velocity Impact and Material Behavior
- Metal Alloys Wear and Properties
- Rock Mechanics and Modeling
- Advanced Surface Polishing Techniques
- Aluminum Alloys Composites Properties
- Metal and Thin Film Mechanics
- Engineering and Materials Science Studies
- Non-Destructive Testing Techniques
- Additive Manufacturing and 3D Printing Technologies
- Numerical methods in engineering
- High Temperature Alloys and Creep
- Advanced machining processes and optimization
- Ultrasonics and Acoustic Wave Propagation
- Innovations in Concrete and Construction Materials
- Probabilistic and Robust Engineering Design
- Hydrogen embrittlement and corrosion behaviors in metals
- X-ray Diffraction in Crystallography
- Metallurgy and Material Forming
- Powder Metallurgy Techniques and Materials
- Ferroelectric and Piezoelectric Materials
- Semiconductor materials and devices
- Mechanical Behavior of Composites
Montanuniversität Leoben
2012-2023
Institut Für Angewandte Kulturforschung
2009-2019
COI Ceramics (United States)
2011-2016
Materials Center Leoben (Austria)
2004-2015
Institut für Technische und Angewandte Physik (Germany)
2008
Max Planck Institute for Solid State Research
2006
American Ceramic Society
2000-2002
University Clinic of Traumatology
2000
University of Göttingen
1992
Max Planck Society
1989-1991
Abstract The paper reviews the current state of art fracture brittle ceramic materials. Typical loading situations (thermal shock, contact damage) are analysed and resulting modes discussed. In focus probabilistic aspects. delayed failure materials (sub critical crack growth cyclic fatigue) is also
The fit of fracture strength data brittle materials (Si(3)N(4), SiC, and ZnO) to the Weibull normal distributions is compared in terms Akaike information criterion. For Si(3)N(4), distribution fits better than distribution, but for ZnO result just opposite. In case difference not large enough make a clear distinction between two distributions. There sufficient evidence show that always preferred other distributions, uncritical use questioned.
The strength of 3D-printed alumina parts fabricated using the Lithography-based Ceramic Manufacturing (LCM) technology is investigated. influence sintering parameters, printing direction, surface condition (i.e. machined or as-printed), and/or geometry on distribution studied under uniaxial and biaxial bending tests. Weibull i.e. characteristic modulus, are determined compared between different samples. Experimental findings show that samples sintered at higher temperatures yield associated...
Layered ceramics are, compared to conventional monolithic ceramics, a good choice for highly loaded structural applications having improved fracture toughness, strength and mechanical reliability. The use of tailored residual compressive stresses in the layers is key parameter adjust these properties. In this work two types are analysed which have external (ECS-laminates) or internal (ICS-laminates) stresses. most important factors influence on toughness laminates discussed. Clear...
Abstract Strength data of brittle materials have a large scatter. Therefore, probabilistic methods been developed for designing with materials. In general, Weibull-type strength distribution function is determined by testing sample about 30 specimens. This then used to predict tolerable load level high component’s reliability. Curved structures in Weibull plots are often attributed special features the function, e. g. threshold failure or bi- and multimodal flaw distributions. For such...
A new biaxial tensile strength test (ball on three balls test, B3B-test) for brittle materials has been proposed by some of the authors several years ago. disc-shaped plate is symmetrically supported at one plane and loaded a fourth ball in centre opposite plane. This advantages compared to conventional bending tests or other tests, especially well defined load transfer geometry high tolerance against measurement uncertainties. makes testing as-sintered (slightly buckled) specimens possible....