Application of dial-gage and laser speckles for ultra-low thermal-expansion measurements using push-rod dilatometers

C. S. Vikram; D. K. Agrawal; R. Roy; H. A. McKinstry

doi:10.1016/0143-8166(86)90002-3

Application of dial-gage and laser speckles for ultra-low thermal-expansion measurements using push-rod dilatometers

C. S. Vikram, D. K. Agrawal, R. Roy, H. A. McKinstry

Materials Research Institute (MRI)

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Conversion of conventional push-rod dilatometers for ultra-low thermal-expansion measurements is described. The method is based on the determination of the displacement of the probe-rod by ultra-precise dial-gage measurements by means of a laser-speckle technique. The movement of speckles created in space by the laser beam incident on an aluminum foil attached to the needle of the gage is observed for the measurements. It has been found that the sensitivity of the modified dilatometer is orders of magnitude higher than the existing LVDT approach.

Original language	English (US)
Pages (from-to)	221-226
Number of pages	6
Journal	Optics and Lasers in Engineering
Volume	7
Issue number	4
DOIs	https://doi.org/10.1016/0143-8166(86)90002-3
State	Published - 1986

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Mechanical Engineering
Electrical and Electronic Engineering

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10.1016/0143-8166(86)90002-3

Cite this

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title = "Application of dial-gage and laser speckles for ultra-low thermal-expansion measurements using push-rod dilatometers",

abstract = "Conversion of conventional push-rod dilatometers for ultra-low thermal-expansion measurements is described. The method is based on the determination of the displacement of the probe-rod by ultra-precise dial-gage measurements by means of a laser-speckle technique. The movement of speckles created in space by the laser beam incident on an aluminum foil attached to the needle of the gage is observed for the measurements. It has been found that the sensitivity of the modified dilatometer is orders of magnitude higher than the existing LVDT approach.",

author = "Vikram, {C. S.} and Agrawal, {D. K.} and R. Roy and McKinstry, {H. A.}",

note = "Funding Information: This work was presented at the 88th Annual Meeting of the American Ceramic Society held in Chicago, Illinois, on 27 April—2 May, 1986. The research was supported by the Air Force Office of Scientific Research, Grant No. AFOSR-83-0291.",

year = "1986",

doi = "10.1016/0143-8166(86)90002-3",

language = "English (US)",

volume = "7",

pages = "221--226",

journal = "Optics and Lasers in Engineering",

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publisher = "Elsevier Ltd",

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TY - JOUR

T1 - Application of dial-gage and laser speckles for ultra-low thermal-expansion measurements using push-rod dilatometers

AU - Vikram, C. S.

AU - Agrawal, D. K.

AU - Roy, R.

AU - McKinstry, H. A.

N1 - Funding Information: This work was presented at the 88th Annual Meeting of the American Ceramic Society held in Chicago, Illinois, on 27 April—2 May, 1986. The research was supported by the Air Force Office of Scientific Research, Grant No. AFOSR-83-0291.

PY - 1986

Y1 - 1986

N2 - Conversion of conventional push-rod dilatometers for ultra-low thermal-expansion measurements is described. The method is based on the determination of the displacement of the probe-rod by ultra-precise dial-gage measurements by means of a laser-speckle technique. The movement of speckles created in space by the laser beam incident on an aluminum foil attached to the needle of the gage is observed for the measurements. It has been found that the sensitivity of the modified dilatometer is orders of magnitude higher than the existing LVDT approach.

AB - Conversion of conventional push-rod dilatometers for ultra-low thermal-expansion measurements is described. The method is based on the determination of the displacement of the probe-rod by ultra-precise dial-gage measurements by means of a laser-speckle technique. The movement of speckles created in space by the laser beam incident on an aluminum foil attached to the needle of the gage is observed for the measurements. It has been found that the sensitivity of the modified dilatometer is orders of magnitude higher than the existing LVDT approach.

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JF - Optics and Lasers in Engineering

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ER -

Application of dial-gage and laser speckles for ultra-low thermal-expansion measurements using push-rod dilatometers

Abstract

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