Measuring and testing – Coating material: ink adhesive and/or plastic
Patent
1995-06-22
1997-07-29
Chilcot, Richard
Measuring and testing
Coating material: ink adhesive and/or plastic
72 1B, 72842, 728657, G01L 122
Patent
active
056512848
ABSTRACT:
A method for detecting the integrity of a bond between strain gages and the circumferential surface of a rod having an intended use comprises bonding at least four strain gages to the surface of the rod in a predetermined orientation, each of the strain gages being connected to a separate strain gage bridge circuit. The rod is used for its intended use and each of the strain gage bridge circuit outputs a plurality of instantaneous first, second, third and fourth output signals, each being associated with one of the strain gages. A plurality of instantaneous bonding values are calculated from the output signals equal to the sum of the first signal and the fourth signal minus the sum of the second signal and the third signal. If the instantaneous bonding values remain constant, the bond integrity of the strain gages is good whereas if the bonding values are not constant, the bond integrity of at least one of the strain gages is poor.
REFERENCES:
patent: 2553986 (1951-05-01), Statham
patent: 4805451 (1989-02-01), Leon
patent: 4911004 (1990-03-01), Leon
patent: 5347871 (1994-09-01), D'Andrea et al.
Biegel Ronald
Chilcot Richard
Liberty Technologies, Inc.
LandOfFree
Strain gage method for measuring thrust and torque on valve stem does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Strain gage method for measuring thrust and torque on valve stem, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Strain gage method for measuring thrust and torque on valve stem will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-627246