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365 views
06:19 Jul-29-2000

Dr.Khazali Zin

Researcher
SIRIM BERHAD,
Malaysia,
Joined Nov 1998
3
attenuation measurement for HIC

When measuring attenuation due to the suspected HIC,can anyone provide me acceptance and rejection criteria
based on the value of this attenuation? This is in order to assist our clients to do preventive measures
to theirs components.
Thank you.


 
05:50 Jul-31-2000

Jairo Humberto Guzman

NDT Inspector, NDT researcher
Ecopetrol ICP,
Colombia,
Joined Nov 1998
6
Re: attenuation measurement for HIC : When measuring attenuation due to the suspected HIC,can anyone provide me acceptance and rejection criteria
: based on the value of this attenuation? This is in order to assist our clients to do preventive measures
: to theirs components.
: Thank you.
Dr.Khazali Zin We have made some HIC inspecitions and we use 4Th eco to measurement the atenuation. we calibrate the 4Th eco to 80% of the screnn and the aceptance criteria is:
signals less than 20% of the screen have to be reyected.
Complementary you have to measuremet The backscater eco and velicities ratio.
The three methodes will give you the % of damage

good luck




 


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