Abstract:
The objective of this research is to study the ultrasonic
attenuation effect on metallurgical properties of specimens. This
study uses the various metallurgical grain sizes, using the
ANSI1025 grade low carbon steel and ANSI316 grade stainless
steel as base metals and shielded metal arc welding with E309L16 to create the discontinued area at the center of fusion zone and
the fusion line. Both sides of the specimen are further tested with
ultrasonic tests to determine the artificial discontinuity. It was
found that different grain size has different effect from different
specimens related to attenuation absorption rate. The result
showed area created artificial discontinuity at the fusion line
from ultrasonic testing only. The beneficial from this particular
research work has lead to better understanding on the limitation
of testing for the welding fusion zone between carbon steel and
stainless steel, and will provide important information toward the
selection of non-destructive testing (NDT) method for testing area
of fusion zone discontinuity.
