Time Control Chart . Some IFR Models

by R.R.L.Kantam and M.S.Ravi Kumar.

Abstract: The time to failure of a product is considered as a quality characteristic to judge the quality of the product. Control limits are evaluated for the time to failure. Life time data falling below the lower control limits/ above the upper control limits/ between the control limits are made use of to conclude whether the life pattern of the product is performing satisfactorily/ favorably/ adversely. Comparative study of our limits with those existing in literature is made.

Key Words: Control Charts, Gamma Distribution, Half Logistic Distribution, IFR Models

R.R.L.Kantam, R.R.L.Kantam, kantam.rrl@gmail.com
M.S.Ravi Kumar,, msrk.raama@gmail.com

Editor: Yazici, Berna, bbaloglu@anadolu.edu.tr

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