Effect

Rank

Criteria

Almost certain

1

Proven detection methods available in concept stage

Very high

2

Proven computer analysis available in early design stage

High

3

Simulation and/or modeling in early stage

Moderately high

4

Tests on early prototype system elements

Medium

5

Tests on preproduction system components

Low

6

Tests on similar system components

Slight

7

Tests on product with prototypes and system components installed

Very slight

8

Proving durability tests on products with system components installed

Remote

9

Only unproven or unreliable technique(s) available

Almost impossible

10

No known techniques available