This paper presents an investigation into the effect of different stress states and strain rates on austenite-to-martensite transformation during plastic straining a Q&P steel. Different are imposed to steel using purposed-designed samples. The sample geometries, including in-plane shear, dogbone plane samples, optimised by finite element modelling. Tensile tests performed at 0.001 s -1 , 1...

Forty patients with "rate dependent aberrancy" (RDA) were studied. This large group of patients permitted a clear definition of the syndromne and recognition of a number of features not previously described. These proved to have a significant bearing on the recognition and differential diagnosis of RDA and non-rate dependent aberrancy. It was found that a small change in cycle length, perhaps t...

In this research, an automatic control system is designed for landing of a small helicopter on a 4 DOF moving platform. The platform has three translational and one directional degree of freedom. The controller design approach is based on development of helicopter nonlinear dynamic model into the SDC (State Dependent Coefficient) form and real time solving of state dependent Riccati equation (S...