Vibration-acoustic diagnostics of rotary machine defects is the most effective method for non-destructive testing their technical condition. Practice shows that its successful use largely depends on a set available methods analyzing vibration processes. Gears are common and heavy-duty components determine overall vibratory condition machine. There quite variety vibration-based gear defects. The...

To reduce carbon emissions, hybrid-electric aircraft could replace conventional turboprop on regional operations. Because of the limited energy density provided by batteries and requirements concerning reserves for operations under instrument flight rules (IFR), a range extender will be required to achieve commercially relevant ranges. In serial hybrid concept with electric motors driving prope...

Introduction: Intermittent explosive disorder (IED), which is characterized by episodic, impulsive aggression, is an important social and clinical problem. Studies on structural cerebral changes using MRI [1] have shown a reduction of frontal neocortical grey matter in patients with IED. Diffusion tensor imaging (DTI) studies have detected white matter microstructural changes in the frontal lob...

Introduction: Diffusion tensor (DT) templates of the human brain are commonly used as a reference for inter-subject spatial normalization, which is a critical step in voxelwise comparisons of neuronal microstructural integrity and brain connectivity across populations. The recently published IIT2 DT template [1] is shown to be more representative of single-subject human brain DT data, is charac...

A practical procedure and postprocessor FORTRAN program which sums strain energies for an aircraft structure, elastic element by elastic element for each component as outputted by MSC/NASTRAN Solution 103 or Solutions 145 and 146 is described and an example is provided showing an output table of strain energies for a hybrid finite element model of a twin turboprop aircraft and comparison with a...

This investigation has been carried out under a contract awarded by the Netherlands Directorate-General of Civil Aviation (RLD), contract number LI/99.121/2. Summary Previous research has suggested that cargo operators suffer a disproportionally high number of accidents. The degree of unsafety could however not properly be quantified due to lack of data. The objective of the underlying study wa...