-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On
Behalf Of Abram Fridman
Sent: Thursday, May 16, 2002 1:49 PM
To: [EMAIL PROTECTED]
Subject: Dependency and multicollinearity
Hello,
I've a problem and desperately need help.
Once I already posted a question here, but now I need to repeat
what I am doing.
I have 74 fractured specimens with fracture area of 3 to 5 mm^2 each.
There are 7 fracture modes (1 to 5 per specimen). I measured area of
each fracture mode on each specimen, and now I need to test my
hypotheses that force, needed to break specimen, could be described
as
F = C + K1*S1 + K2*S2 + . + K7*S7
Where S1-S7 - areas of different fracture types (predictors).
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Your model is in error. It does not describe microfracture physics. A
fracture of one type develops uneven stress on adjacent areas, leading to
premature failure. Get a metallurgist who knows about microstructure and
fracture dynamics involved in your problem.
DAHeiser
.
.
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