Article of manufacture with pre-determined fatigue life

Details Article of manufacture with pre-determined fatigue life Article of manufacture with pre-determined fatigue life

1974-07-29

1976-05-18

Powell, Jr., Everette A.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

416219A, B21K 304

Patent

active

039574504

ABSTRACT:
Fatigue failure of an engineering article is primarily influenced by a natural inherent defect in the material from which the article is made. By an ability established to allocate a quantitative measure to such defect as a new material property influenced only by environment and material manufacturing procedures as are other basic properties, and using known methods for determining critical stress areas, a wide range of fatigue design data can be generated from a few basic measurements. Thus, from the deduction of a characteristic material defect length, there can be determined both a material's basic fatigue properties and the fatigue capability of the article for which the material is used.

REFERENCES:
patent: 3045968 (1962-07-01), Willis
patent: 3576681 (1971-04-01), Barker et al.
patent: 3744300 (1973-07-01), Fleury

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