SU543282A1 - Method of making sensitive tensoresistor foil element - Google Patents

Description

The invention relates to measuring equipment, namely to the manufacture of strain gauges used for experimental studies of the stress state of structures and structures.

A known method of manufacturing a foil sensitive element of a strain gauge by photomechanical. _ whom the manufacture of the foil element ^υ using chemical etching [1].

However, this method cannot be used for the manufacture of foil sensitive elements from materials that are not subjected to etching.

The closest to the invention in terms of technical nature and the achieved result is a method of mechanical or electrophysical manufacturing of a foil sensitive element, in which the element is cut out of a foil sheet with an insulating layer applied to it [2].

The disadvantage of this method is * 5 the use of sophisticated equipment and manufacturing technology.

The purpose of the invention is to simplify the manufacturing technology of the foil sensor. 3Q

To do this, according to the proposed method, the foil is folded into a bag so that in the cross section of the bag either a zigzag or spiral-shaped contour is formed, the electrical insulation layer is polymerized, and the cutting is performed from the end face perpendicular to its longitudinal axis.

In FIG. 1 and 2 are examples of the preparation of a spiral loop package, 'in FIG. 3 and ‘4 are examples of obtaining a zigzag contour packet.

To obtain a spiral-shaped contour, the foil 1 (in one or two layers) with the insulating layer 2 deposited on it is fixed on the rod 3, rolled into a multilayer cylinder, a binder insulating layer is polymerized and a segment is made from the end perpendicular to the longitudinal axis of the cylinder.

To obtain a zigzag contour, the foil (in one or two layers; put in a package in the form of an accordion, polymerize the bonding layer and produce a cut with Vopna perpendicular to the longitudinal axis of the folded foil.

The proposed method allows to simplify the manufacturing technology of the sensitive element of the resistor, does not require sophisticated equipment, and allows to reduce the consumption of materials.

Claims (2)

The invention relates to a measurement technique, in particular to the manufacture of strain gauges used for experimental study of the stress state of structures and structures. A known method of making a foil sensing element of a strain gauge by photomechanically fabricating a foil element using chemical etching. However, this method cannot be used to make foil sensitive elements from materials not subject to etching. The closest to the invention in its technical essence and the achieved result is the method of mechanical or electrophysical fabrication of a foil sensing element, in which the element is cut out of the foil sheet coated with an electrical insulating layer 2 J. The disadvantage of this method is the use of sophisticated equipment and technology manufacturing. The purpose of the invention is the simplification of those; the dogia of manufacturing a foil sensitive element. For this, according to the proposed method, the foil is folded into a bag so that, in the cross-section of the bag, either a zigzag or a spiral contour is formed, the electrically insulating layer is dimensioned, and the cutting is performed perpendicularly from the end of its longitudinal axis. FIG. 1 and 2 show examples of the preparation of a package of a spiral contour / Fig. 3 and 4 are examples of obtaining a zigzag loop packet. To obtain a spiral-shaped contour, the foil 1 (in one or two layers) with an electrically insulating layer 2 deposited on it is fixed on the rod 3, rolled into a multi-layer cylinder, the bonding electrically insulating layer is polymerized and cut from the end perpendicular to the longitudinal axis of the cylinder. To obtain a zigzag contour, the foil (in one or two layers; folded into a package in the form of an accordion, the binder layer is polymerized and produced at a segment c) of a highlander perpendicular to the longitudinal axis of the folded foil. The proposed method allows to simplify the manufacturing technology of the sensitive element of the resistor, which does not require complicated equipment, and reduces the consumption of materials. The invention The method of manufacturing a foil sensing element of the strain gauge is that the foil is covered with an electrical insulating layer and cut, characterized in that, in order to simplify the technology of manufacturing the sensitivity of the element, the foil is folded into a bag so that in a cross section of the bag is formed or zigzag , or a spiral-shaped contour, the insulating layer is polymerized, and the package is cut from the end perpendicular to its longitudinal axis. Sources of information taken into account during the examination 1. D.Ankudinov K. Mamaev. Low base resistance strain gages. - M .: Mashinostroenie, 1968, p. 17 2.Glagovsky B.A. et al. A new method for fabricating strain gauge elements. All-Union Scientific and Technical Conference. The state and perspective of the development of electrical stress measurement. - Leningrad, 1973, NTO instrument-making industry (prototype). // ipus.f