Apparatus for monitoring the fatigue strength of structures

Details Apparatus for monitoring the fatigue strength of structures Apparatus for monitoring the fatigue strength of structures

1995-11-15

1997-03-25

Dougherty, Elizabeth L.

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

By loading of specimen

73762, 73787, G01N 1908

Patent

active

056146809

ABSTRACT:
An apparatus for monitoring the fatigue strength of a structure comprises a longitudinal rib which is attached or integrated to the surface of the structure. The rib has a plurality of transverse notches of differing depths, each of the notches having a rounded end adjacent the surface of the structure and a pointed end extending toward an exterior edge of the rib.

REFERENCES:
patent: 2724964 (1955-11-01), Singdale
patent: 3572091 (1971-03-01), McFarland
patent: 3782178 (1974-01-01), Thomas
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patent: 4590804 (1986-05-01), Brull
patent: 5161891 (1992-11-01), Austill
patent: 5237875 (1993-08-01), de la Veaux
patent: 5319982 (1994-06-01), Creager
patent: 5325721 (1994-07-01), Pendergrass, Jr.
patent: 5425274 (1995-06-01), Creager
Patent Abstract of Japan for JP 60-209137 dated Oct. 21, 1985.
European Search Report dated Sep. 20, 1995.

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