Dear All ,
I have a question about CVN Test
First Question
For sub-sized CVN test specimens where the width across the notch is less than 80% of the base metal thickness this sentence means ?
Full size specimen is 10 mm. 80% of base metal thickness is used when specimen have to sub-size from 10 mm to be 8 mm. True or false ?
Second Question
Contract document spec. temperature 0 C
If i have PQR 7.5 mm. accordance Table 4.15
(1) Temperature for test have to be -11.1 C when sub-size specimen is 10 x 5 from PQR 7.5 mm . or
(2) Temperature for test have to be -2.8 C when sub-size specimen is 10 x 5 from PQR 7.5 mm
Because Laboratory person said that number 2 is true but i don't believe him .
Sorry for my language
Regards ,
Toey TNDT .