Measuring and testing – Fluid pressure gauge – U-tube liquid column
Patent
1988-06-15
1989-05-02
Myracle, Jerry W.
Measuring and testing
Fluid pressure gauge
U-tube liquid column
73819, 73845, G01N 324
Patent
active
048257001
ABSTRACT:
A bi-axial compression test apparatus for geomaterial (soil, etc.) samples that is designed to allow free shear band formation and provide measurements of the stress displacement characteristics of the failure zone. A geomaterial sample formed into a specimen comprising a right rectangular prism is surrounded by a thin rubber membrane and is supported by walls along two parallel faces. An axial load is kinematically applied by a plate that is guided to prevent any tilt or eccentricity, while a bottom support plate for the specimen is horizontally guided by a linear bearing that is substantially friction free. All of the surfaces in contact with the specimen are glass lined and lubricated to minimize friction. The assembly of the specimen and its supports is placed in a conventional tri-axial cell in a loading frame so that an axial load can be applied to one end of the specimen and reacted against the bottom plate. Internal loaded load cells allow for accurate measurement of the axial force, and any eccentricities thereof, as well as friction along the side walls. Displacement transducers monitor the axial and lateral displacements of the specimen and the horizontal movement of the bottom plate, to permit analysis of the shear mode, and when to determine shear failure occurs.
REFERENCES:
patent: 3199341 (1965-08-01), Heuer, Jr. et al.
patent: 3505860 (1970-04-01), Bishop et al.
patent: 3616685 (1971-11-01), Strom
patent: 4047425 (1977-09-01), Handy et al.
patent: 4122704 (1978-10-01), Lutenegger et al.
patent: 4539851 (1985-09-01), Lutenegger
patent: 4562726 (1986-01-01), Barnaby
patent: 4594899 (1986-06-01), Henke et al.
patent: 4599891 (1986-07-01), Brauer et al.
patent: 4649741 (1987-03-01), Strom
Drescher Andrzej
Vardoulakis Ioannis G.
Myracle Jerry W.
Regents of the University of Minnesota
LandOfFree
Bi-axial geomaterial test system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bi-axial geomaterial test system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bi-axial geomaterial test system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-577204