AR070418A1 - Metodo y aparato para determinar la dilatacion de un material mediante un dispositivo sensor de error de foco - Google Patents

Metodo y aparato para determinar la dilatacion de un material mediante un dispositivo sensor de error de foco

Info

Publication number
AR070418A1
AR070418A1 ARP090100485A ARP090100485A AR070418A1 AR 070418 A1 AR070418 A1 AR 070418A1 AR P090100485 A ARP090100485 A AR P090100485A AR P090100485 A ARP090100485 A AR P090100485A AR 070418 A1 AR070418 A1 AR 070418A1
Authority
AR
Argentina
Prior art keywords
focus error
sample
frequency
expansion
magnitude
Prior art date
Application number
ARP090100485A
Other languages
English (en)
Inventor
Francisco Balzarotti
Andrea Veronica Bragas
Oscar Eduardo Martinez
Esteban Alejo Domene
Nelida Mingolo
Original Assignee
Consejo Nac Invest Cient Tec
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 Consejo Nac Invest Cient Tec filed Critical Consejo Nac Invest Cient Tec
Priority to ARP090100485A priority Critical patent/AR070418A1/es
Priority to BRPI1000503-0A priority patent/BRPI1000503A2/pt
Priority to US12/704,879 priority patent/US8622612B2/en
Publication of AR070418A1 publication Critical patent/AR070418A1/es

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/171—Systems in which incident light is modified in accordance with the properties of the material investigated with calorimetric detection, e.g. with thermal lens detection
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
    • G01B21/08—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness for measuring thickness
    • G01B21/085—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness for measuring thickness using thermal means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/8422—Investigating thin films, e.g. matrix isolation method
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/16—Investigating or analyzing materials by the use of thermal means by investigating thermal coefficient of expansion

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Mathematical Physics (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

Se mide una senal de error de foco resultante de la dilatacion inducida fototérmicamente en una muestra del material bajo análisis. Se dispone un láser como fuente de calentamiento modulada periodicamente que se hace incidir en la muestra y un dispositivo de medicion de error de foco que incide en la superficie que esta siendo calentada. Un dispositivo medidor de error de foco genera una senal representativa del desplazamiento de la superficie del material en direccion perpendicular debido a la dilatacion producida por el calentamiento periodico, la cual es filtrada analogica o digitalmente para discriminar la componente del desplazamiento a la frecuencia en que fue modulado o a alguna otra frecuencia relacionada con ésta, como alguna armonica o suma con otra modulacion. La senal de error de foco, calibrada adecuadamente, da una medida precisa y sensible de la magnitud de la dilatacion. Dicha magnitud y su dependencia con la frecuencia de la modulacion permite determinar propiedades físicas como el coeficiente de dilatacion o el de difusividad térmica, el espesor de la película de recubrimiento o el coeficiente de absorcion de la luz incidente en el haz de calentamiento. Variando la longitud de onda de la radiacion incidente es posible determinar el espectro de absorcion de la muestra aun para partículas de muy pequeno tamano en que la fraccion de energía absorbida es minuscula.
ARP090100485A 2009-02-12 2009-02-12 Metodo y aparato para determinar la dilatacion de un material mediante un dispositivo sensor de error de foco AR070418A1 (es)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ARP090100485A AR070418A1 (es) 2009-02-12 2009-02-12 Metodo y aparato para determinar la dilatacion de un material mediante un dispositivo sensor de error de foco
BRPI1000503-0A BRPI1000503A2 (pt) 2009-02-12 2010-02-11 mÉtodo para determinar a dilataÇço tÉrmica de um material e aparelho para determinar a dilataÇço tÉrmica de um material
US12/704,879 US8622612B2 (en) 2009-02-12 2010-02-12 Method and apparatus for determining the thermal expansion of a material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ARP090100485A AR070418A1 (es) 2009-02-12 2009-02-12 Metodo y aparato para determinar la dilatacion de un material mediante un dispositivo sensor de error de foco

Publications (1)

Publication Number Publication Date
AR070418A1 true AR070418A1 (es) 2010-04-07

Family

ID=42138868

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP090100485A AR070418A1 (es) 2009-02-12 2009-02-12 Metodo y aparato para determinar la dilatacion de un material mediante un dispositivo sensor de error de foco

Country Status (3)

Country Link
US (1) US8622612B2 (es)
AR (1) AR070418A1 (es)
BR (1) BRPI1000503A2 (es)

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WO2012172524A1 (en) 2011-06-17 2012-12-20 Consejo Nacional De Investigaciones Cientificas Y Tecnicas (Conicet) Method and photothermal apparatus for contactless determination of thermal and optical properties of material

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US8992076B2 (en) 2010-12-15 2015-03-31 Waters Gmbh Dilatometer for measuring metallic samples
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FR2980846B1 (fr) * 2011-10-03 2014-05-30 Commissariat Energie Atomique Procede de determination sans contact de l'epaisseur d'un echantillon, systeme correspondant
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US9939396B2 (en) * 2015-01-30 2018-04-10 Netzsch-Gerätebau GmbH 3D diffusivity
RU2610550C1 (ru) * 2015-09-14 2017-02-13 Шлюмберже Текнолоджи Б.В. Способ определения температурного коэффициента линейного расширения материала и устройство для его осуществления
WO2018175799A1 (en) 2017-03-24 2018-09-27 Corning Incorporated Systems and methods for measuring the temperature of glass during tube conversion
CN110057313A (zh) * 2019-03-21 2019-07-26 天津大学 一种自动激光聚焦形貌测量系统
CN112881459B (zh) * 2021-01-12 2021-10-26 清华大学 薄膜材料热膨胀系数的测试装置
CN113267526B (zh) * 2021-05-13 2024-04-02 今化科技(武汉)有限公司 一种硅烷交联聚乙烯电缆料的热收缩性能测试方法
CN115561554B (zh) * 2022-10-17 2023-07-14 中国空气动力研究与发展中心超高速空气动力研究所 基于聚光灯加热的热透波材料电性能的测试装置及方法

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
WO2012172524A1 (en) 2011-06-17 2012-12-20 Consejo Nacional De Investigaciones Cientificas Y Tecnicas (Conicet) Method and photothermal apparatus for contactless determination of thermal and optical properties of material

Also Published As

Publication number Publication date
BRPI1000503A2 (pt) 2011-07-26
US8622612B2 (en) 2014-01-07
US20100208242A1 (en) 2010-08-19

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FD Application declared void or lapsed, e.g., due to non-payment of fee