Normy UIC - Mezinárodní železniční unie - strana 175

Introductory study on the causes of shelling cracks in rails (Enquiry Report)

Preliminary calculations

1. Residual stresses in rails (additional measurements) 2. Checking of the fatigue criterion proposed by Mr. Dang Van (additional measurements) 3. Relationships between dynamic wheel load and wheel diameter 4. General conclusions

Threedimensional photoelastic study of a loaded but nonbent rail

Enquiry into the problem of small diamter wheels

Residual longitudinal stresses in the rail (part 1)

Tentative study of stresses in a rail by photoelastic and extensometer measurements

Residual stresses in the rail (cont.). Study of the workhardened zone

Composition of the different stress conditions in the wheel/rail contact zone. Development of a new fatigue criterion

Experimental studies: 1. Workhardening speed with the EMS 60 machine (additional measurements) 2. Residual stresses in hardgrade steel rails (additional measure ments) 3. Checking of fatigue criterion proposed by Mr. DANG VAN