I am trying to use the 4 theta projection technique to estimate the remaining life of components subjected to creep. I am having problems using non-linear regression analysis to calculate the individual theta values.
I would really appreciate it if anyone can share their experiences and suggestions working with the theta projection technique.
Luca Esposito
I used the theta projection method to predict the minimum creep rate of a nickel based superalloy. I am pleased to help you with the 4 theta tecnique even if I suggest you to use a more physically based model
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