Civil Engineering Reference
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Figure 18:
Resistance side of the toughness assessment [7]
On the resistance side, the temperature for 27J derived from the Charpy impact test is
transferred with the modified Sanz-Correlation (T
K100
= T
27J
- 18°C) in the T
K100
temperature
as input value for the Wallin-Toughness-curve. From this curve, the threshold value for brittle
fracture K
mat,d
is finally derived for the assessment (“Fig. 18”).
(2)
A transformation in the temperature format needs to be carried out:
(3)
Resulting in the design check format as per EN 1993-1-10 for toughness requirement:
(4)
Hereby, all relevant parameters from the action and from the structure are included
in T
Ed
, whereas T
Rd
contains the material properties from the tests only. The results of this
assessment have been summarized and are presented in the EN 1993-1-10 by a Tab. for per-
missible material thickness for the choice of the steel grade (“Tab. 3”). This Tab. represents
therefore a simple design aid for the practising engineer.
Input parameters are hereby:
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