A5101550000- Fatigue and fracture mechanics
- Structural Load-Bearing Analysis
- Mechanical stress and fatigue analysis
- Numerical methods in engineering
- High-Velocity Impact and Material Behavior
- Material Properties and Failure Mechanisms
- Mechanical Behavior of Composites
- Structural Behavior of Reinforced Concrete
- Advanced Welding Techniques Analysis
- Graphite, nuclear technology, radiation studies
- Welding Techniques and Residual Stresses
- Microstructure and Mechanical Properties of Steels
- Ultrasonics and Acoustic Wave Propagation
- Hydrogen embrittlement and corrosion behaviors in metals
- Fire effects on concrete materials
- High Temperature Alloys and Creep
- Non-Destructive Testing Techniques
- Engineering Structural Analysis Methods
- Microstructure and mechanical properties
- Structural Integrity and Reliability Analysis
- Additive Manufacturing Materials and Processes
- Metal Forming Simulation Techniques
- Nuclear and radioactivity studies
- Aluminum Alloys Composites Properties
- Metallurgy and Material Forming
Norwegian University of Science and Technology
2016-2024
Sapienza University of Rome
2023-2024
University of Milan
2024
Xi'an Jiaotong University
2022
University of Padua
2008-2017
Br. Birkeland (Norway)
2017
Abstract The present paper deals with multiaxial fatigue behaviour of severely notched components made titanium grade 5 alloy (Ti–6Al–4V). experimental tests have been carried out under combined Mode I and III loadings, both in phase phase. Cylindrical specimens weakened by circumferential notches employed. Different nominal load ratios applied the ( R = −1, 0 0.5). had a notch‐tip radius smaller than 0.1 mm, notch depth equal to 6 mm an opening angle 90°. results obtained testing are...
The paper deals with the multi-axial fatigue strength of notched specimens made 39NiCrMo3 hardened and tempered steel. Circumferentially V-notched were subjected to combined tension torsion loading, both in-phase out-of-phase, under two nominal load ratios, R=−1 R= 0, also taking into account influence biaxiality ratio, λ=τa/σa. notch geometry all axi-symmetric was a tip radius 0.1 mm, depth 4 an included V-notch angle 90° net section diameter 12 mm. results from tests are discussed together...
ABSTRACT A large bulk of static test results carried out on notched specimens are presented in a unified way by using the mean value strain energy density (SED) over given finite‐size volume surrounding highly stressed regions. In plane problems, when cracks or pointed V‐notches considered, becomes circle circular sector, respectively, with R C being radius. depends fracture toughness material, ultimate tensile strength and Poisson's ratio. When notch is blunt, control area assumes crescent...
ABSTRACT In the present contribution, fracture behaviour of specimens made isostatic graphite and weakened by inclined key‐hole notches is investigated. Different loading mixities are considered varying inclination angle notch with respect to direction applied load. The new data permit enlarge scarce number results available in literature for same material under prevalent in‐plane shear loading. A criterion based on local energy used assessment summarise all a single scatter band independent...
The advances in solar technology and electric propulsion now offer the promise of new, very capable space transport systems that will allow us to effectively explore system. NASA has developed many concepts space-powered spacecraft with power levels ranging from tens hundreds kilowatts for robotic asteroid-driven missions Mars. This paper describes two electrical/chemical over last 5 years discusses how they could be used humanize A possible sustainable solution supply would achieve...
ABSTRACT The notch stress intensity factor (NSIF) based analytical frame is applied to the slit tips (or weld roots) of welded joints with inclusion T‐stress component. This can be determined from FE models evaluating ligament stresses close pointed tip. An alternative presented for corresponding keyhole notches on solutions literature, which are stresses. In tip models, mean local strain energy density (SED) effect analytically and numerically in comparison, using two different...
ABSTRACT As it is well known the Poisson's effect in a cracked plate subjected to anti‐symmetric plane loading leads generation of coupled out‐of‐plane singular mode. Recent theoretical and numerical analyses have shown that this present also plates weakened by sharp V‐notches might play role failure initiation phenomena notched Mode II loading, especially presence large notch opening angle. Dealing with blunt notches radius, not just notches, or an mode does appear been systematically...