Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
(01 May 2006) FITNET MK7Test Programme on 50mm Thick A533B PlateFigure 13.8 – Wide plate test specimens for tests on 50 mm plate.A large programme of testing <strong>and</strong> analysis was carried out on 50mm thick A533B steel, Figure 13.8, (forselected tests, the material thickness was reduced to 25mm to allow testing within the capacity of theavailable equipment).Material characterisation:• St<strong>and</strong>ard fracture mechanics testing (SENB specimens), to generate single-point values of toughnessin terms of K Ic , critical J <strong>and</strong> critical CTOD.• Tearing resistance curves (R-curves) in terms of J <strong>and</strong> CTOD, at temperatures of -100, -70 <strong>and</strong>+70ºC.• Full stress-strain curves at +70, -70 <strong>and</strong> -96 ºC.Loading, temperatures <strong>and</strong> defects: Wide plate tests were carried out at a range of temperatures between+70 o C <strong>and</strong> –163 o C, covering the full ductile to brittle transition temperature curve. Biaxial ratios of k=0 (ieuniaxial loading), k=0.5, <strong>and</strong> k=1 (ie equibiaxial loading) are included in the data, where k represents the ratioof the load parallel to the flaw to that perpendicular to the flaw. Both semi-elliptical surface breaking <strong>and</strong>through-thickness flaws were introduced, ie SCT (surface-cracked tension) <strong>and</strong> CCT (centre-cracked tension)specimens as shown in Table 13.2.© FITNET 2006 – All rights reserved 13-9
Change language