Joint Efficiency values
Joint Efficiency values
(OP)
Hello all!
My understanding is that JE is the ratio of the strength of joint to the strength of the base material. I've been trying to find out how the Joint Efficiency (JE) values were determined by ASME?
For example, how did ASME determined that for a Type 1 joint without radiography the JE value is 0.7? How did the established that the strength of a type 1 joint without radiography is 70% of the strength of the base metal?
I have also noted that these values have changed from past and old editions of the ASME BPVC. When was the last change?
Regards!
My understanding is that JE is the ratio of the strength of joint to the strength of the base material. I've been trying to find out how the Joint Efficiency (JE) values were determined by ASME?
For example, how did ASME determined that for a Type 1 joint without radiography the JE value is 0.7? How did the established that the strength of a type 1 joint without radiography is 70% of the strength of the base metal?
I have also noted that these values have changed from past and old editions of the ASME BPVC. When was the last change?
Regards!





RE: Joint Efficiency values
RE: Joint Efficiency values
RE: Joint Efficiency values
RE: Joint Efficiency values
Your best bet would be to find a time-machine and ask that group of engineers.
RE: Joint Efficiency values
In any case in the european code pressure vessels are categorized depending on the Volume·Pressure figure and the danger of the fluid (gas or liguid, explosive or not, ...). The level 0.7 (no testing) it's only applicable with the lowest category.
RE: Joint Efficiency values
Does any of you have access to that paper? If you do and do not mind sharing it, could you please email it to me? (cespinoza82@gmail.com)
Kind regards!