SummaryCURRENT STATUS AND TEST PROGRAMS FOR THE STEPPED STAVE 4th stepping stave prototypes The current manufacturing process Stave thermal performances Water-ethanol binary ice mixture(I) Water-ethanol binary ice mixture(II) Water-methanol binary ice mixtur Water-methanol liquid phase mixture Stave geometry and dimensional stability As built Geometry (room temperature 0-15-0 stave: room temperature profile measurement 0-15-0 stave: room temperature milling distorsions 0-90-0 stave: room temperature profile measurements 0-90-0 stave: room temperature milling distorsions Stave Transverse tilting after milling at room temperature Stave dimensional stability 0-90-0 stave max vertical cool-down dispacement 0-15-0 stave measured transverse tilting due to cool-down 0-15-0 stave cool-down twisting: locked ends 0-15-0 stave cool-down twisting: free ends Prototype n.4: measurements .vs. calculations 0-15-0 stave cool down deflections 0-90-0 stave cool down deflections 0-90-0 omega stave FEA analysis Stave combined cool-down+weight deflections: worst case Stave combined cool-down+weight deflections: best case Effect of the coolant pressure Stave deflections due to internal pressure (-1 barr) Stave structural integrity Peeling tests on 15mm stave samples as built Summary and conclusions |
Autore:M.Olcese |