 Home
Up
Back
|
Thoughts
on Measuring NDE Effectiveness
... with a tip of the hat to Derek Sturges.
|
|
|
| Think of an NDE process you know: |
|
What size defect is it
capable of detecting?
(How do you know that?)What proportion
of those defects is detected?
(How do you know that?)
|
| Consider two NDE inspectors you have: |
|
Do they both perform
equally well?
(How do you know that?)Does
their performance meet your requirements?
(How do you know that?)
|
| Compare two NDE processes: |
|
Which process finds the smallest
defects?
(How do you know that?)Which
process finds the most defects?
(How do you know that?)
|
| Your company makes industrial products: |
|
Would a better inspection improve product
life?
... or would the effort be wasted?
(How do you know that?)When should you
schedule an in-service inspection?
(How do you know that?)
|
| Remember: It
isn't the smallest crack you can find that's important - it's the largest one you can
miss. How do you know what that size is? |
|
| For a description of one
way to measure the relationship between size and
detectability,
click here. |
