Some Similarities / Differences between Steel Static and Virtual Brass Static Casting

Dynamics of static friction between steel and silicon.

We conducted experiments in which steel and silicon or quartz are clamped together. Even with the smallest tangential forces we could apply, we always found reproducible sliding motions on the nanometer scale. The velocities we study are thousands of times smaller than in previous investigations. The samples first slide and then lock up even when external forces hold steady. One might call the ...

Dynamic and Quasi-Static Tensile Properties of Structural S400 Steel

The study of mechanical behavior of the structural steel S400 under quasi- static and dynamic loading has been the subject of this investigation. In oder to obtain different stress - triaxiality conditions the specimens were notched with 1, 1.5, 2 and 3.5 mm notch radius. The results of fractography show as the velocity of tension increases, ductility reduces and a ductile-brittle transition oc...

Variation in perceived attractiveness: differences between dynamic and static faces.

Studies that attempt to define facial attractiveness often do so in terms of structural features of the face (e.g., symmetry, averageness). However, these studies typically use static images of faces that may not be analogous to dynamic faces that are frequently used in other areas of attractiveness research, such as research investigating the impact of attractiveness on social interaction. The...

Static and lattice vibrational energy differences between polymorphs

On the confusion between static load level and static task.

Electromyography (EMG) is widely used to evaluate muscle activity. EMG can indicate which muscles are active and the relationship between a level of activity and the worker's capacity. Properly employed, EMG assists in evaluating the relative risks of alternative working conditions. Articles reporting EMG results are often used by ergonomics practitioners as guidance in job design. As such, the...