Research Article

Determination of Optimal Warranty Period with Preventive Maintenance Actions for Items from Heterogeneous Populations

Table 6

Optimal set of parameters and the corresponding minimum ECR for different settings of repair time limit and shape parameter for the power law process to investigate the optimal length of warranty period when , and

ECRECRECR

1/121.215.87311.208.80751.1611.7406
2/121.035.96191.008.93010.9711.8894
3/120.936.03990.919.03700.8812.0180
4/120.876.10870.859.13070.8312.1300
5/120.836.16980.819.21360.7912.2286
6/120.806.22430.789.28730.7612.3160
7/120.786.27310.769.35330.7312.3939
8/120.766.31710.749.41240.7112.4636
9/120.746.35670.729.46570.7012.5262
10/120.736.39260.719.51390.6912.5828
11/120.716.42510.709.55740.6712.6339
12/120.696.45460.689.61340.6712.6801