BE902221A - Mesure des contraintes dans le verre flotte. - Google Patents

Mesure des contraintes dans le verre flotte.

Info

Publication number
BE902221A
BE902221A BE0/214864A BE214864A BE902221A BE 902221 A BE902221 A BE 902221A BE 0/214864 A BE0/214864 A BE 0/214864A BE 214864 A BE214864 A BE 214864A BE 902221 A BE902221 A BE 902221A
Authority
BE
Belgium
Prior art keywords
sheet
measurement
constraints
stress
birefringence
Prior art date
Application number
BE0/214864A
Other languages
English (en)
Original Assignee
Saint Gobain Rech
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 Saint Gobain Rech filed Critical Saint Gobain Rech
Publication of BE902221A publication Critical patent/BE902221A/fr

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
    • G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
    • G01L1/241—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet by photoelastic stress analysis

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

Procédé de mesure des contraintes longitudinales permanentes d'une feuille de verre flotté sur la ligne de production, dans lequel un faisceau lumineux polarisé passe dans la feuille de verre, les contraintes créant une biréfringence, le faisceau est analysé pour déterminer les modifications introduites par la biréfringence de la feuille et par suite la contrainte, la mesure des contraintes étant conduite en continu en 'balayant' la feuille sur toute sa largeur, simultanément une mesure est effectuée pour déterminer la tempéarature au point de la feuille sur lequel la contrainte est mesurée, la combinaison de ces deux mesures conduisant aux valeurs des contraintes.
BE0/214864A 1984-04-19 1985-04-17 Mesure des contraintes dans le verre flotte. BE902221A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8406182A FR2563337B1 (fr) 1984-04-19 1984-04-19 Mesure des contraintes dans le verre flotte

Publications (1)

Publication Number Publication Date
BE902221A true BE902221A (fr) 1985-10-17

Family

ID=9303299

Family Applications (1)

Application Number Title Priority Date Filing Date
BE0/214864A BE902221A (fr) 1984-04-19 1985-04-17 Mesure des contraintes dans le verre flotte.

Country Status (5)

Country Link
US (1) US4619681A (fr)
BE (1) BE902221A (fr)
DE (1) DE3512851C2 (fr)
FR (1) FR2563337B1 (fr)
IT (1) IT1184459B (fr)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62157549A (ja) * 1985-12-30 1987-07-13 Kanzaki Paper Mfg Co Ltd シート状透光性試料の異方性測定方法
JPH0682098B2 (ja) * 1987-07-08 1994-10-19 三菱電機株式会社 応力評価装置
DE19511707B4 (de) * 1995-03-30 2007-09-27 Isra Vision Lasor Gmbh Verfahren zur Bestimmung von Spannungen in transparenten Materialien
DE19513862C2 (de) * 1995-04-12 1997-12-18 Alcatel Kabel Ag Verfahren und Vorrichtung zum Feuerpolieren eines langgestreckten Glaskörpers
DE19543289A1 (de) * 1995-11-21 1996-05-09 Werner Grose Verfahren und Vorrichtung zur opto-dynamischen Oberflächenspannungsmessung an laufenden Substraten
ES2211004T3 (es) 1998-06-22 2004-07-01 Saint-Gobain Glass France Medicion de las tensiones de forma en un material transparente, tal como un acristalamiento.
FR2780158B1 (fr) * 1998-06-22 2000-09-08 Saint Gobain Vitrage Procede et dispositif pour la mesure des contraintes de forme dans un materiau transparent
US6359686B1 (en) * 1999-06-29 2002-03-19 Corning Incorporated Inspection system for sheet material
US20030076487A1 (en) * 2001-08-03 2003-04-24 Cannon Bret D. System and method for glass processing and stress measurement
TWI231410B (en) * 2004-04-09 2005-04-21 Powerchip Semiconductor Corp Support stand
DE102008001291B3 (de) * 2008-04-21 2009-07-09 Schott Ag Hochpräzises Messverfahren zur Bestimmung von Materialspannungen
DE102010046433B4 (de) * 2010-09-24 2012-06-21 Grenzebach Maschinenbau Gmbh Vorrichtung und Verfahren zum Detektieren von Fehlstellen in kontinuierlich erzeugtem Float-Glas
US8459062B2 (en) 2011-09-27 2013-06-11 Corning Incorporated Apparatus and methods for producing a glass ribbon
DE102014115318A1 (de) * 2014-10-21 2016-04-21 cibite AG Verfahren und Vorrichtung zur Überprüfung des Transmissionsgrads eines Flachglas-Substrats
JP6848960B2 (ja) * 2016-02-26 2021-03-24 ソニー株式会社 測位装置、通信装置、および測位システム
DE102016218390B3 (de) * 2016-09-23 2018-02-01 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Messanordnung und Verfahren zum Messen von mechanischen Spannungen
CN106525879A (zh) * 2016-11-28 2017-03-22 上海耀皮玻璃集团股份有限公司 一种玻璃应力斑观测仪
CN107798376A (zh) * 2017-10-16 2018-03-13 福耀集团（上海）汽车玻璃有限公司 玻璃智能计数装置及计数方法
CN108426606B (zh) * 2018-03-12 2024-06-25 湖南科创信息技术股份有限公司 浮法玻璃生产线冷端应力与厚度的检测系统

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124637A (en) * 1964-03-10 Apparatus for examining prestressed glass
US2993402A (en) * 1956-08-03 1961-07-25 Libbey Owens Ford Glass Co Measuring of materials by use of polarized light
US3508899A (en) * 1969-03-21 1970-04-28 Ppg Industries Inc Edge heating in annealing process
US3656854A (en) * 1969-06-11 1972-04-18 Ppg Industries Inc Glass defect detection system
US3811775A (en) * 1972-06-21 1974-05-21 Asg Ind Inc Polariscope for determining stress in a transparent material
US3799679A (en) * 1972-06-27 1974-03-26 Ppg Industries Inc Glass distortion scanning system
FR2333236A1 (fr) * 1975-11-27 1977-06-24 Solvay Procede pour le controle des tensions internes dans un film de matiere plastique et dispositif pour sa realisation
US4043780A (en) * 1976-06-02 1977-08-23 Ppg Industries, Inc. Glass sheet temperature monitoring system
JPS5782726A (en) * 1980-11-12 1982-05-24 Nippon Sheet Glass Co Ltd Measuring device for temperature distribution of glass
US4401893A (en) * 1981-07-29 1983-08-30 Intec Corporation Method and apparatus for optically inspecting a moving web of glass
US4523848A (en) * 1981-10-01 1985-06-18 National Research Development Corporation Polariscope
JPS5918923A (ja) * 1982-07-23 1984-01-31 Toshiba Corp 複屈折測定装置

Also Published As

Publication number Publication date
IT1184459B (it) 1987-10-28
US4619681A (en) 1986-10-28
FR2563337A1 (fr) 1985-10-25
DE3512851A1 (de) 1985-10-31
FR2563337B1 (fr) 1986-06-27
DE3512851C2 (de) 1996-02-22
IT8520360A0 (it) 1985-04-16

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RE Patent lapsed

Effective date: 20030430