Micro-creepmeter

Details Micro-creepmeter Micro-creepmeter

1980-04-25

1981-12-15

Ciarlante, Anthony V.

Measuring and testing

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

Specified electrical sensor or system

73784, 73786, G01B 1116

Patent

active

043052991

ABSTRACT:
A device for determining microscopic motion in static creep and dynamic oscillation between two objects by measuring relative displacement between the two objects connected by a metal wire includes a linear variable differential transformer disposed within a cylindrical housing. One end of the housing includes an extendable tubular member which is joined to one of the objects, The other end of the housing includes a fitting for securing a wire extending to the other object. The core of the linear variable displacement transformer is supported by a pair of spider diaphragms disposed on opposite sides of the transformer. The tubular member is connected by an extension spring to one of the diaphragms, while the wire retaining fitting is connected by a universal joint to the other diaphragm. The diaphragms provide high axial compliance so that the core may undergo microscopic displacement in concert with the displacement between the two objects.

REFERENCES:
patent: 2814883 (1957-12-01), Strimel
patent: 4094189 (1978-06-01), Serata

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