I have a question on efficiency equipment..
I usually determinate the efficiency equipment with ketos ring following the ASTM E1444 on value of direct corrent (1400A,2500A,3400A) and on numbers of the artifical sub-surface defects (3,5,6)...In ASTM is specified direct corrent..
In most case on my job i use the alternative current to check the surface defects (
especially fatigue crack)..I make the set-up on direct current (ketos ring) but i magnetize in alternative current.. The question is follow:
ASTM does not specific the test for set-up efficiency equipement in alternative current..
Why? If the equipement is efficient with ketos ring (direct current) it is also efficient in alternative current?
Thanks and best regards
The compact inspection head is suitable for thermographic ndt
tasks. The uncooled infrared camera
is specially developed for
NDI-tasks and offers a thermal sensitivity until now known only
from thermal imagers with cooled detector. All required
components and functions are integrated into the inspection-head.
You will only need an ethernet cable to connect the sensor with
the evaluation system.