Measuring strain in a spherical rubber ball using speckles

Fu Pen Chiang; Gunes Uzer

Measuring strain in a spherical rubber ball using speckles

Fu Pen Chiang, Gunes Uzer

Mechanical and Biomedical Engineering Department

Stony Brook University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

When an object is placed at different distances from a camera lens, the resulting images are different in size due to the perspective effect. If this effect can be quantitatively measured, it could be used to deduce the shape of a 3D object, because different parts of the object occupy different positions from the imaging lens. An equation for the perspective effect was derived by Sciammarella and Chiang in 1968 and verified by using moiré fringes. It was then called the moiré gap effect and the equation was referred as the moiré gap equation. In this paper we describe a method of utilizing the gap effect and speckle photography technique to obtain the surface strain of a spherical rubber ball.

Original language	English
Title of host publication	Proceedings of the SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2007
Pages	382-384
Number of pages	3
State	Published - 2007
Event	SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2007 - Springfield, MA, United States Duration: 3 Jun 2007 → 6 Jun 2007

Publication series

Name	Proceedings of the SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2007
Volume	1

Conference

Conference	SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2007
Country/Territory	United States
City	Springfield, MA
Period	3/06/07 → 6/06/07

Cite this

@inproceedings{61d4338e947b439fbb4699d7334f0947,

title = "Measuring strain in a spherical rubber ball using speckles",

abstract = "When an object is placed at different distances from a camera lens, the resulting images are different in size due to the perspective effect. If this effect can be quantitatively measured, it could be used to deduce the shape of a 3D object, because different parts of the object occupy different positions from the imaging lens. An equation for the perspective effect was derived by Sciammarella and Chiang in 1968 and verified by using moir{\'e} fringes. It was then called the moir{\'e} gap effect and the equation was referred as the moir{\'e} gap equation. In this paper we describe a method of utilizing the gap effect and speckle photography technique to obtain the surface strain of a spherical rubber ball.",

author = "Chiang, {Fu Pen} and Gunes Uzer",

year = "2007",

language = "English",

isbn = "1604232226",

series = "Proceedings of the SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2007",

pages = "382--384",

booktitle = "Proceedings of the SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2007",

note = "SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2007 ; Conference date: 03-06-2007 Through 06-06-2007",

}

Chiang, FP & Uzer, G 2007, Measuring strain in a spherical rubber ball using speckles. in Proceedings of the SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2007. Proceedings of the SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2007, vol. 1, pp. 382-384, SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2007, Springfield, MA, United States, 3/06/07.

Measuring strain in a spherical rubber ball using speckles. / Chiang, Fu Pen; Uzer, Gunes.
Proceedings of the SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2007. 2007. p. 382-384 (Proceedings of the SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2007; Vol. 1).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Uzer, Gunes

PY - 2007

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N2 - When an object is placed at different distances from a camera lens, the resulting images are different in size due to the perspective effect. If this effect can be quantitatively measured, it could be used to deduce the shape of a 3D object, because different parts of the object occupy different positions from the imaging lens. An equation for the perspective effect was derived by Sciammarella and Chiang in 1968 and verified by using moiré fringes. It was then called the moiré gap effect and the equation was referred as the moiré gap equation. In this paper we describe a method of utilizing the gap effect and speckle photography technique to obtain the surface strain of a spherical rubber ball.

AB - When an object is placed at different distances from a camera lens, the resulting images are different in size due to the perspective effect. If this effect can be quantitatively measured, it could be used to deduce the shape of a 3D object, because different parts of the object occupy different positions from the imaging lens. An equation for the perspective effect was derived by Sciammarella and Chiang in 1968 and verified by using moiré fringes. It was then called the moiré gap effect and the equation was referred as the moiré gap equation. In this paper we describe a method of utilizing the gap effect and speckle photography technique to obtain the surface strain of a spherical rubber ball.

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M3 - Conference contribution

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SN - 9781604232226

T3 - Proceedings of the SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2007

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BT - Proceedings of the SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2007

T2 - SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2007

Y2 - 3 June 2007 through 6 June 2007

ER -

Measuring strain in a spherical rubber ball using speckles

Abstract

Publication series

Conference

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