Design features and results from fatigue-reliability-research machines | Zendy

V. R. Lalli | Zendy; Dimitri Kececioglu | Zendy; Jeffrey Bentley McConnell | Zendy

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Design features and results from fatigue-reliability-research machines

Author(s) -

V. R. Lalli,

Dimitri Kececioglu,

Jeffrey Bentley McConnell

Publication year - 1972

Publication title -

experimental mechanics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.815

H-Index - 87

eISSN - 1741-2765

pISSN - 0014-4851

DOI - 10.1007/bf02321691

Subject(s) - reliability (semiconductor) , solid mechanics , calibration , torque , bending , structural engineering , fatigue testing , probabilistic logic , materials science , diagram , reliability engineering , computer science , engineering , composite material , mathematics , statistics , physics , artificial intelligence , power (physics) , thermodynamics , quantum mechanics , database

The design, fabrication, development, operation, calibration and results from reversed bending combined with steady-torque fatigue-research machines are presented. Fifteen-centimeter-long, notched, SAE 4340 steel specimens are subjected to various combinations of these stresses and cycled to failure. Failure occurs when the crack in the notch passes through the specimen automatically shutting down the test machine. These cycles-to-failure data are statistically analyzed to develop a probabilistic S-N diagram. These diagrams have many uses including the design of rotating components having minimum size and weight for a specified number of cycles and reliability.

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