Tension Testing "Sampling Plan"
Tension Testing "Sampling Plan"
(OP)
I am testing a braze pre-form on Inconel 600 base metal. I will be conducting a series of tension test to E8.
The test will be utlimate tensile after melt, after diffusion, which will be compared to bars which are untouched.
I am looking for the min. amount bars per group which would give me a good avg. sampling plan.
Would someone be kind enough to comment.
Thanks John
The test will be utlimate tensile after melt, after diffusion, which will be compared to bars which are untouched.
I am looking for the min. amount bars per group which would give me a good avg. sampling plan.
Would someone be kind enough to comment.
Thanks John





RE: Tension Testing "Sampling Plan"
Once the experiment is done, and you have the data, for future testing there is a way to determine the sample size based on the variance of each treatment done in the initial experiment.
RE: Tension Testing "Sampling Plan"
RE: Tension Testing "Sampling Plan"
Basically, you need to find the mean and standard deviation for your two groups, and then apply an appropriate test to see if they are different, to whatever confidence level you need.
http://www.itl.nist.gov/div898/handbook/prc/section3/pr...
Explains how to determine whether the means of the two groups are significantly different.
Or see example 10.9 in Schaum's Outline of Statistics.
Cheers
Greg Locock