Influence of speed of rail flaw detection on the reliability of its results

The system of non-destructive testing of rails during their operation on the railroad network of the Russian Federation is based on the use of removable and mobile means of flaw detection. The increase in the volume of control by mobile means in recent years is explained by their higher productivity due to the higher speed of control. But the increase in the speed of control inevitably leads to the loss of acoustic contact and missing defects

Investigating heat transfer augmentation using gradient heat flux measurement and PIV method

The heat transfer and the fluid flow behaviour at the surface of a circular cylinder with and without turbulizing rods, heated by saturated steam rectangular and circular fins were studied for different Reynolds numbers. The proposed approach of simultaneous use of gradient heat flux measurement and PIV method allowed us optimizing the geometry of the system with the rods and increasing heat transfer coefficient up to 20%

Isomorphism of calcium in magnetite

30.00; Translated from Russian (Tr. Inst. Geol. Geofiz. Akad. Nauk SSSR Sib. Otd. 1978 v. 403 p. 322-330)SIGLEAvailable from British Library Document Supply Centre- DSC:9022.06(BISI--24913)T / BLDSC - British Library Document Supply CentreGBUnited Kingdo