CREEP-RUPTURE LIFETIME DISTRIBUTION OF BORON FIBERS

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概要

• 論文の詳細を見る

• The purpose of this study is to evaluate the lifetime distribution of ceramic fibers by a time-dependent Weibull function, from the viewpoint of materials reliability engineering. Static loading tests and constant loading rate tests of a boron fiber, one of representative ceramic fibers, were carried out in air at 300℃, and the relevant Weibull parameters were estimated from the lifetime and the strength data obtained in the above tests. The results showed that the fibers fractured in a moment or a long-term period in the static loading tests, and the lifetime distributions predicted from the single time-dependent Weibull function were not in good agreement with the long-term lifetime data. The SEM observation for the fracture surfaces indicated that the cause of the long-term rupture was due to a creep damage, and completely different from that of the momentary fracture. Therefore, a mixed time-dependent Weibull function based on a mixed distribution model was proposed for evaluating again the lifetime data. It was clarified that, finally, the function proposed here was enough applicable for predicting the creep-rupture lifetime distribution of boron fibers.

• 社団法人日本材料学会の論文
• 1996-06-15

著者

• Goda K

  Yamaguchi Univ. Ube Jpn

• Goda Koichi

  Department Of Mechanical Engineering Yamaguchi University

• Hamada Jun-ichi

  Hikari R&d Lab. Nippon Steel Corporation

• Hamada Jun-ichi

  Hikari R&d Laboratories Technical Development Bureau Nippon Steel Co.

関連論文

• Effect of IFSS on tensile strength of unidirectional fiber composites using 3D-FEM simulation
• Effects of Alkali Treatment to Reinforcement on Tensile Properties of Curaua Fiber Green Composites(Green Composites)
• Effect of Initial Solidified Structure on Ridging Phenomenon and Texture in Type 430 Ferritic Stainless Steel Sheets
• CREEP-RUPTURE LIFETIME DISTRIBUTION OF BORON FIBERS
• Statistical Properties of the Tensile Strength of B/Al composites at Elevated Temperatures
• Markov Process Analysis for the Strength of Ceramic Matrix Composites Reinforced with Continuous Fibers(Reliability Engineering in Materials and Structures)

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