GB626206A - Improvements in or relating to stress indicators - Google Patents

Improvements in or relating to stress indicators

Info

Publication number
GB626206A
GB626206A GB2411144A GB2411144A GB626206A GB 626206 A GB626206 A GB 626206A GB 2411144 A GB2411144 A GB 2411144A GB 2411144 A GB2411144 A GB 2411144A GB 626206 A GB626206 A GB 626206A
Authority
GB
United Kingdom
Prior art keywords
block
gauges
strain gauges
load
roll
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2411144A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ERNEST ALFRED WOLFGANG HOFF
British Iron and Steel Research Association BISRA
Original Assignee
ERNEST ALFRED WOLFGANG HOFF
British Iron and Steel Research Association BISRA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ERNEST ALFRED WOLFGANG HOFF, British Iron and Steel Research Association BISRA filed Critical ERNEST ALFRED WOLFGANG HOFF
Priority to GB2411144A priority Critical patent/GB626206A/en
Publication of GB626206A publication Critical patent/GB626206A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
    • G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
    • G01L1/225—Measuring circuits therefor
    • G01L1/2262—Measuring circuits therefor involving simple electrical bridges
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
    • G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
    • G01L1/2206—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports
    • G01L1/2218—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports the supports being of the column type, e.g. cylindric, adapted for measuring a force along a single direction

Abstract

626,206. Determining physical qualities of materials ; resistance measurements ; combinations of resistances. BRITISH IRON & STEEL RESEARCH ASSOCIATION, OROWAN, E., HOFF, E. A. W., and LOS, J. Dec. 2, 1944, No. 24111. [Class 37] [Also in Group XIX] A stress indicator for measuring loads, particularly the load between the rolls of a rolling mill, comprises a block on which electrical resistance strain gauges are mounted in such a way that one or more of the gauges are tensioned and one or more are compressed, the load being determined by adding together the resistance variation effect of the gauges. As shown, the block is cylindrical and is adapted to support along the axis the total load of one of the bearings of one roll. Four strain gauges a, Fig. 1, sensitive to variations in the length of the block, and four strain gauges b sensitive to variations in the circumference of the block, are mounted equidistant on the block. The gauges are stuck on the bottom of shallow recesses in the block and are covered and sealed by means of an external sleeve 3 (not shown) and a sealing compound to protect them from the atmosphere. To measure the load on the bearings on the roll, the combined strain gauges a of the block are arranged at A in the Wheatstone bridge, Fig. 3, and the combined strain gauges b of the same block are arranged at B. The other arms have fixed resistances x and y. The two effects of A and B are cumulative in the galvanometer c. Zero adjustment is by a variable resistance g. Total load on the roll is measured by two blocks, one at each end, the combined gauges of the second block replacing resistances x, y in the circuit. Like gauges of the two blocks are opposite so that the effects on the galvanometer are cumulative. In both these arrangements temperature variations are cancelled out. For photographic recording or for ordinary purposes a modified moving coil galvanometer with torsion wire suspension is used, the coils having a natural period between 1 and 0.01 second, and having a mirror directly attached thereto. For pen or pencil recording, amplification means may be included in the circuit.
GB2411144A 1944-12-02 1944-12-02 Improvements in or relating to stress indicators Expired GB626206A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2411144A GB626206A (en) 1944-12-02 1944-12-02 Improvements in or relating to stress indicators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2411144A GB626206A (en) 1944-12-02 1944-12-02 Improvements in or relating to stress indicators

Publications (1)

Publication Number Publication Date
GB626206A true GB626206A (en) 1949-07-12

Family

ID=10206541

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2411144A Expired GB626206A (en) 1944-12-02 1944-12-02 Improvements in or relating to stress indicators

Country Status (1)

Country Link
GB (1) GB626206A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1130611B (en) * 1955-01-31 1962-05-30 Charles Testut Ets Weighing device with a tubular element subjected to tension or compression
EP0752575A2 (en) * 1995-07-07 1997-01-08 Hottinger Baldwin Messtechnik Gmbh Load cell
US20150144762A1 (en) * 2013-11-25 2015-05-28 Chi Hung Louis Lam System for monitoring condition of adjustable construction temporary supports

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1130611B (en) * 1955-01-31 1962-05-30 Charles Testut Ets Weighing device with a tubular element subjected to tension or compression
EP0752575A2 (en) * 1995-07-07 1997-01-08 Hottinger Baldwin Messtechnik Gmbh Load cell
EP0752575A3 (en) * 1995-07-07 1998-03-04 Hottinger Baldwin Messtechnik Gmbh Load cell
US20150144762A1 (en) * 2013-11-25 2015-05-28 Chi Hung Louis Lam System for monitoring condition of adjustable construction temporary supports
US10225629B2 (en) * 2013-11-25 2019-03-05 Chi Hung Louis Lam System for monitoring condition of adjustable construction temporary supports

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