A note on the FRPDF distribution
The paper by Varghese etal. [Varghese P, Braswell RN, Wang B, Zhang C. Statistical tolerance analysis using FRPDF and numerical convolution. Computer Aided Design 1996;28:72332] provided a novel approach for statistical tolerance analysis. This required convolution of the FRPDF distribution and the paper pursued a numerical approach for this. Here, it is shown that one can derive elementary closed form expressions for the convolution and that the numerical approach can be avoided.
frpdf distribution statistical tolerance analysis convolution