Measuring and testing – Specimen stress or strain – or testing by stress or strain... – By loading of specimen
Patent
1990-03-30
1992-04-07
Noland, Tom
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
By loading of specimen
73786, 335441, G01N 308
Patent
active
051016672
ABSTRACT:
A method for non-destructive evaluation of a conduit, gallery or similar structure as shown which involves mechanical tests using an apparatus for applying forces to the walls of the structure in one or two opposite directions and measuring the displacement and or deformation resulting from the application of the forces. The applied forces and the displacements are measured, received, processed and stored in memory for further processing analysis and diagnosis to determine the condition of the structure over the length evaluated. A suitable expert computer system is utilized to establish the overall condition of the structure and classify the structure into zones of risk for maintenance and or repair.
REFERENCES:
patent: 2923062 (1960-02-01), Auvil
patent: 3495340 (1970-02-01), Bunnell
patent: 3568326 (1971-05-01), Dodds
patent: 3641678 (1972-02-01), Murphey, Jr. et al.
patent: 3755908 (1975-09-01), VerNooy
patent: 4807484 (1989-02-01), Goedecke
Soviet Inventions Illustrated, week 8713, 87092594 SO2, Derwent Publications Ltd., (Apr. 1987) (Abstract of Soviet Patent Document No. 1249305 published Aug. 7, 1986).
Prin Dominique
Tidiere Alain
Dune Travaux Spec. & SAGEP
Noland Tom
LandOfFree
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