Q: I am seeking A&B Frontal impact stiffness coefficients for an Australian Falcon vehicle and a Nissan sedan (Japanese model)?
My initial response was:
- Do them down under govt. folks and/or the Japan govt. folks run crash tests on their vehicles?
Are any available to the general public (as in you?)
Do you have access to them?
Get them!
Get as many as you can.
It's pretty straight forward to calculate A&B coefficients And of course if you provide the data to Dan or other A&B crush coefficient vendors they can do it for you too.
- Yes other countries DO run NCAP crash tests. The various websites can be found through NCAPs — Global NCAP
The trouble is that most of them do NOT give detailed measurements of the crush, they just give star ratings for the occupant survival protocols.
The second problem is that most of them, especially the more historical tests, are all at a single standard speed, so even if you can find the crush measurements, you still need to assume a threshold Delta V, and have no way of assessing if that assumption is realistic.
If it isn’t, chances are you could end up with a very high ‘A’ and a very low ‘B’
- I'm with you 100%
Since 1987 we have been trying to emphasize the imitations of data, the issue with a single crash test to 'define' structural properties, etc, etc
See my 1987 letter to SAE committee folks
Also See- Why was CRASH created?
- Is CRASH damage analysis a virtual relationship?
- The "No Damage Intercept" of CRASH
since
Due to the 'no damage intercept assumption' of CRASH:- Every single vehicle in a new vehicle showroom has a 4-5 MPH DeltaV!!
Frank Navin ran some low speed crash tests on Rabbits in the 80s? and found 8-9 mph 'no damage intercept'- I did quick search for your report but...apparently I didn't tag or store it properly...oh where is it?
But of course there are variations in testing sites (a report done on that years ago and demonstrated variations?)