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On D-optimal robust designs for lifetime improvement experiments |
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| Authors: | Rabindra Nath Das |
| Institution: | a Department of Statistics, The University of Burdwan, Burdwan, W.B., India b School of Statistics, Renmin University, Beijing, China c Department of Statistics, Pennsylvania State University, University Park, PA 16802, USA |
| Abstract: | Locating the optimal operating conditions of the process parameters is critical in a lifetime improvement experiment. For log-normal lifetime distribution with compound error structure (i.e., symmetry, inter-class and intra-class correlation error structures), we have developed methods for construction of D-optimal robust first order designs. It is shown that D-optimal robust first order designs are always robust first order rotatable but the converse is not always true. |
| Keywords: | Compound symmetry structure D-optimal robust design Mean life Response surface Robust rotatability |
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