ISO-MME

We are not sure about the right use of the ISO code position 1 which defines the test object in some test setups.
We have doubt in the following cases:

1. R16 Regulation where one dummy is seated in one CRS (Child Retention System or baby car seat) and this element is placed over one sled.
We think that the right code position 1 for all the elements over the SLED should be S but we do not know if dummy would rather be D or 1.
Moreover, Instrumentation over the sled and in CRS should begin with S or another ISO code would be more suitable?

2. Lateral Pole test
In this test type our lab is identifying the car crashed as object 1 by using “1” in the code position one. The car is placed over one sled and we are not sure about how SLED acceleration channel should be named. Should be S0**?? If Sled acceleration Channel should be named as S0**, means that we are talking about a test setup with 3 test objects?:
- Object1: Car
- Object2: Sled
- Object3: Pole
Or must we consider car and sled as a unique test object:
- Object1: The group formed by car & sled
- Object2: Pole

3. Component tests
In tests where components are tested and those components are placed over one sled and crashed against a wall:
- If there are instrumentation either in the sled or not over the components, may we use S* or other code for all those positions?
- Should we use C* for all the positions in the sled as we are testing components? Should we rather use another coding as 1*?
- Is this situation another example of test with three objects:
1. Sled
2. Components under test
3. Fixed barrier

Thanks for

Hello Josep,
in the MME main document the definition of the test object is:

group of components with the same initial state (e.g. speed, direction of movement) at impact time

This leads to the need of different test objects, if differences in speed or direction at impact time exist.
But it is not forbidden to use different test objects, although speed and direction are equal.
The fragmentation into different test objects is controlled by your measurement task (and by your software).
By history all occupant dummies are related to the test objects where they are sitting in and distinguished by their position.

This results in the following recommendations:

1. Sled with one or a few dummies everyone in a seat or CRS without a vehicle or vehicle substitution:
   • use S or C for all elements over the sled and all dummy measurements
   • use the position 0 for one seat/dummy/CRS or use the position 1-9 as a kind of numbering of seat/dummy/CRS components
2. Lateral Pole Test with sled acceleration measurement *:
   • use S for the sled (sled or flying floor)
   • use 1 for the vehicle
   • use B for the pole (fixed barrier)
3. Component tests (similar to case 1 with a few seat/dummy/CRS-components):
   • use S or C for all elements over the sled and all dummy measurements
   • use the position 1-9 as a kind of numbering of seat/dummy/CRS components
   • use B for the fixed barrier

* Note: the differentiation in S and 1 is meaningful, when a movement of the vehicle substitution
to the sled after impact time is possible

Peter