Measuring and testing – Specimen stress or strain – or testing by stress or strain... – By loading of specimen
Patent
1993-01-28
1995-05-09
Raevis, Robert
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
By loading of specimen
G01N 308
Patent
active
054129966
ABSTRACT:
A testing machine includes a pair of spaced side-by-side rails spanned by a carriage and opposite thereto a piston/cylinder mechanism between each rail and an associated crosshead. A wire cable, sling or the like is connected between the carriage and the crosshead and when the pistons of the piston/cylinder mechanisms are forcefully extended from the cylinders the sling is brought under tension loading upwardly to 3,000,000 lbs. Each side rail is formed of a plurality of sections with each section being defined by relatively long metal rail members joined by tubes and carrying studs and a first series of rebars. A second series of rebars spans a joint between adjacent rail sections. The metal rail members of adjacent sections are spaced from each other to define a gap therebetween. Concrete is poured into the sections to eventually surround, embed and unitize the sections upon subsequent solidification of the concrete. After the concrete has cured, a molten zinc alloy is poured into the gaps or spaces between adjacent metal elongated members and eventually solidifying therein.
REFERENCES:
patent: 2754065 (1956-07-01), Hawley
patent: 3010311 (1961-11-01), Meldrum et al.
patent: 3849871 (1974-11-01), Kaunitz
patent: 4040220 (1977-08-01), Henager
patent: 4874152 (1989-10-01), Roberts
patent: 5265476 (1993-11-01), Khachaturian et al.
Raevis Robert
Roberts Testing Equipment, Inc.
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