Fiber optic Sagnac interferometer for on-line acoustic emission monitoring of high-temperature power plant structures

Tom Carolan; R. L. Reuben; James S. Barton; Julian D. Jones

Fiber optic Sagnac interferometer for on-line acoustic emission monitoring of high-temperature power plant structures

Tom Carolan, R. L. Reuben, James S. Barton, Julian D. Jones

School of Engineering & Physical Sciences

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

1 Citation (Scopus)

Abstract

This paper details the design of a non-contact fiber optic sensor for the detection of acoustic emission for structural integrity monitoring in high temperature power plant applications. The sensor is based on a Sagnac interferometer and produces an output proportional to target velocity, without the need for active phase stabilization. It is inherently insensitive to low frequency perturbations of the instrument or the target and incorporates an environmentally insensitive downlead which may be of arbitrary length. It is shown that the sensor is capable of meeting the specifications for structural integrity monitoring of high temperature power plant components based on acoustic emission detection and has a velocity resolution of 50 nms^-1Hz^{- 1/2}.

Original language	English
Title of host publication	Proceedings of SPIE - The International Society for Optical Engineering
Pages	530-539
Number of pages	10
Volume	2868
Publication status	Published - 1996
Event	Second International Conference on Vibration Measurements by Laser Techniques: Advances and Applications - Washington, DC, USA Duration: 23 Sept 1996 → 25 Sept 1996

Conference

Conference	Second International Conference on Vibration Measurements by Laser Techniques: Advances and Applications
City	Washington, DC, USA
Period	23/09/96 → 25/09/96

Cite this

@inproceedings{727f64eaedc04eb3895a3e2107bb6abb,

title = "Fiber optic Sagnac interferometer for on-line acoustic emission monitoring of high-temperature power plant structures",

abstract = "This paper details the design of a non-contact fiber optic sensor for the detection of acoustic emission for structural integrity monitoring in high temperature power plant applications. The sensor is based on a Sagnac interferometer and produces an output proportional to target velocity, without the need for active phase stabilization. It is inherently insensitive to low frequency perturbations of the instrument or the target and incorporates an environmentally insensitive downlead which may be of arbitrary length. It is shown that the sensor is capable of meeting the specifications for structural integrity monitoring of high temperature power plant components based on acoustic emission detection and has a velocity resolution of 50 nms-1Hz- 1/2 .",

author = "Tom Carolan and Reuben, {R. L.} and Barton, {James S.} and Jones, {Julian D.}",

year = "1996",

language = "English",

isbn = "0819422649",

volume = "2868",

pages = "530--539",

booktitle = "Proceedings of SPIE - The International Society for Optical Engineering",

note = "Second International Conference on Vibration Measurements by Laser Techniques: Advances and Applications ; Conference date: 23-09-1996 Through 25-09-1996",

}

Carolan, T, Reuben, RL, Barton, JS & Jones, JD 1996, Fiber optic Sagnac interferometer for on-line acoustic emission monitoring of high-temperature power plant structures. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 2868, pp. 530-539, Second International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, Washington, DC, USA, 23/09/96.

TY - GEN

T1 - Fiber optic Sagnac interferometer for on-line acoustic emission monitoring of high-temperature power plant structures

AU - Carolan, Tom

AU - Reuben, R. L.

AU - Barton, James S.

AU - Jones, Julian D.

PY - 1996

Y1 - 1996

N2 - This paper details the design of a non-contact fiber optic sensor for the detection of acoustic emission for structural integrity monitoring in high temperature power plant applications. The sensor is based on a Sagnac interferometer and produces an output proportional to target velocity, without the need for active phase stabilization. It is inherently insensitive to low frequency perturbations of the instrument or the target and incorporates an environmentally insensitive downlead which may be of arbitrary length. It is shown that the sensor is capable of meeting the specifications for structural integrity monitoring of high temperature power plant components based on acoustic emission detection and has a velocity resolution of 50 nms-1Hz- 1/2 .

AB - This paper details the design of a non-contact fiber optic sensor for the detection of acoustic emission for structural integrity monitoring in high temperature power plant applications. The sensor is based on a Sagnac interferometer and produces an output proportional to target velocity, without the need for active phase stabilization. It is inherently insensitive to low frequency perturbations of the instrument or the target and incorporates an environmentally insensitive downlead which may be of arbitrary length. It is shown that the sensor is capable of meeting the specifications for structural integrity monitoring of high temperature power plant components based on acoustic emission detection and has a velocity resolution of 50 nms-1Hz- 1/2 .

UR - http://www.scopus.com/inward/record.url?scp=0030384678&partnerID=8YFLogxK

M3 - Conference contribution

SN - 0819422649

VL - 2868

SP - 530

EP - 539

BT - Proceedings of SPIE - The International Society for Optical Engineering

T2 - Second International Conference on Vibration Measurements by Laser Techniques: Advances and Applications

Y2 - 23 September 1996 through 25 September 1996

ER -

Fiber optic Sagnac interferometer for on-line acoustic emission monitoring of high-temperature power plant structures

Abstract

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