deformation length is one of the most important parameters in cold roll-forming process, which plays a fundamental role in determining the inter-distance between the stations and rate of deformation. deformation length was first introduced by bhattacharyya. he also obtained a closed-form relation for this length in roll-forming of symmetric channel section. in this paper, deformation length in ...

In this research the effect of initial microstructure on hot deformation behavior in terms of Ferrite-to-Austenite ratios is studied. Two types of stainless steels C1 and C2 were homogenizing heat-treated and deformed under hot compression examinations at temperatures 900ºC and 1100ºC at strain rate of 0.1s-1. The results showed that the flow stress levels of specimens are strongly r...

OBJECTIVE To evaluate the capacity of the ultrasound-based method of speckle tracking analysis to detect changes in multilayered dorsal neck muscle activity induced by performing a lifting task. SUBJECTS Twenty-one healthy individuals. DESIGN Participants performed a loaded lifting task in 3 different postural orientations of the neck (neutral, flexed and forward head posture). Ultrasound i...

In the present study, the microstructural changes of a Nickel based superalloy Nimonic80A during a non-isothermal deformation were studied. Therefore, microstructure evolutionduring hot side pressing test was predicted with combined methods of finite element analysis andprocessing map of the material. The predicted results were validated through experimentalmicrostructural studies. The results ...

Undeformed tungsten suffers from a brittleness that makes it unsuitable for applications at low temperatures. Cold-worked materials such as drawn wires or rolled plates can however show considerable ductility even The reason this behaviour is so far not understood. We investigated series of potassium-doped were subsequently one sintered ingot, making them chemically identical. Hence, the proper...

The detection and quantification of surface deformation of an active rock glacier using the differential SAR interferometry technique is presented. An average deformation rate of 6 mm/35 days in the radar line-of-sight in the summer of 1992 was estimated. The maximum deformation rate was located at the upper part of the rock glacier and amounts to 18 mm/35 days. In contrast, at the snout of the...