尺度母数と形状母数の両方を寿命特性の変化要因とするWeibull寿命分布に関する計量規準型信頼性試験への定数打切り方式の導入

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  • Introduction of a Fixed-Number Censoring Procedure for Reliability Testing of Weibull Distribution Considering the Influence of Both Shape and Scale Parameters
  • シャクド ボスウ ト ケイジョウ ボスウ ノ リョウホウ オ ジュミョウ トクセイ ノ ヘンカ ヨウイン ト スル Weibull ジュミョウ ブンプ ニ カンスル ケイリョウ キジュンガタ シンライセイ シケン エ ノ テイスウ ウチキリ ホウシキ ノ ドウニュウ

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In traditional reliability tests for assuring the mean time to failure (MTTF) in Weibull distribution with shape and scale parameters, it is assumed that the change of lifetime is concerned with the scale parameter only. Then, Hisada et al. proposed a reliability test procedure for assuring MTTF while considering the influence of both shape and scale parameters. Their reliability test requires complete lifetime data, and the application of a censoring procedure for designing a reliability test for Weibull distribution that considers the influence of both shape and scale parameters has not been considered. In general, since reliability tests require a long testing period, the fixed-number censoring procedure is sometimes applied in order to save testing time. Therefore, in this article we consider the fixed-number censoring procedure in reliability test for assuring MTTF while considering the influence of both shape and scale parameters for Weibull distribution. We also refer to the economical design of the proposed fixed-number censoring test.

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