Design of a structural strain measurement system based on slotted photomicrosensors

Simon Fletcher; Difference Chuku; Thomas Furness; Andrew Longstaff

Design of a structural strain measurement system based on slotted photomicrosensors

Simon Fletcher, Difference Chuku, Thomas Furness, Andrew Longstaff

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

Abstract

Structural deformation in manufacturing machines, either due to thermal or finite stiffness effects, can affect their performance. Measurement of strain of a structural member is common for many safety critical systems but is not used very often for precision machinery to enable correction of resulting errors. This may be due in part to the temperature sensitivity of strain gauges or the complexity of installing many sensors to characterise complex bending of large structures often found on machines. This paper describes the design of a new strain sensing system based on a low-cost displacement sensing technique employing off-the-shelf slotted photomicrosensors and connecting rods to facilitate long range measurement. A small framework of a series of sensors is simulated with detailed analysis of the design. Finally, some preliminary validation results are presented which show sub-micron resolution and repeatability.

Original language	English
Title of host publication	Laser metrology and machine performance XIV
Subtitle of host publication	14th International Conference and Exhibition on Laser Metrology, Machine Tool, CMM & Robotic Performance : Lamdamap 2021
Editors	Liam Blunt, Andreas Archenti
Publisher	euspen
Pages	54-59
Number of pages	6
Volume	14
ISBN (Electronic)	9780995775183
Publication status	Published - 1 Dec 2021
Event	14th International Conference and Exhibition on Laser Metrology, Coordinate Measuring Machine and Machine Tool Performance - Virtual, Virtual Online Duration: 10 Mar 2021 → 11 Mar 2021 Conference number: 14 https://www.euspen.eu/events/virtuallamdamap-2021-2/

Conference

Conference	14th International Conference and Exhibition on Laser Metrology, Coordinate Measuring Machine and Machine Tool Performance
Abbreviated title	LAMDAMAP 2021
City	Virtual Online
Period	10/03/21 → 11/03/21
Internet address	https://www.euspen.eu/events/virtuallamdamap-2021-2/

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

https://www.euspen.eu/knowledge-base/LAM21120.pdfLicence: Unspecified

Cite this

Fletcher, S., Chuku, D., Furness, T., & Longstaff, A. (2021). Design of a structural strain measurement system based on slotted photomicrosensors. In L. Blunt, & A. Archenti (Eds.), Laser metrology and machine performance XIV: 14th International Conference and Exhibition on Laser Metrology, Machine Tool, CMM & Robotic Performance : Lamdamap 2021 (Vol. 14, pp. 54-59). euspen. https://www.euspen.eu/knowledge-base/LAM21120.pdf

Fletcher, Simon ; Chuku, Difference ; Furness, Thomas et al. / Design of a structural strain measurement system based on slotted photomicrosensors. Laser metrology and machine performance XIV: 14th International Conference and Exhibition on Laser Metrology, Machine Tool, CMM & Robotic Performance : Lamdamap 2021. editor / Liam Blunt ; Andreas Archenti. Vol. 14 euspen, 2021. pp. 54-59

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title = "Design of a structural strain measurement system based on slotted photomicrosensors",

abstract = "Structural deformation in manufacturing machines, either due to thermal or finite stiffness effects, can affect their performance. Measurement of strain of a structural member is common for many safety critical systems but is not used very often for precision machinery to enable correction of resulting errors. This may be due in part to the temperature sensitivity of strain gauges or the complexity of installing many sensors to characterise complex bending of large structures often found on machines. This paper describes the design of a new strain sensing system based on a low-cost displacement sensing technique employing off-the-shelf slotted photomicrosensors and connecting rods to facilitate long range measurement. A small framework of a series of sensors is simulated with detailed analysis of the design. Finally, some preliminary validation results are presented which show sub-micron resolution and repeatability.",

keywords = "machine tool structure, Displacement measurement, photomicrosensor, Strain measurement, Structural deformation",

author = "Simon Fletcher and Difference Chuku and Thomas Furness and Andrew Longstaff",

note = "Funding Information: The authors gratefully acknowledge the UK?s Engineering and Physical Sciences Research Council (EPSRC) funding of the Future Metrology Hub (EP/P006930/1) Publisher Copyright: {\textcopyright} 2021 Laser Metrology and Machine Performance XIV - 14th International Conference and Exhibition on Laser Metrology, Machine Tool, CMM and Robotic Performance, LAMDAMAP 2021. All rights reserved. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.; 14th International Conference and Exhibition on Laser Metrology, Coordinate Measuring Machine and Machine Tool Performance, LAMDAMAP 2021 ; Conference date: 10-03-2021 Through 11-03-2021",

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Fletcher, S, Chuku, D, Furness, T & Longstaff, A 2021, Design of a structural strain measurement system based on slotted photomicrosensors. in L Blunt & A Archenti (eds), Laser metrology and machine performance XIV: 14th International Conference and Exhibition on Laser Metrology, Machine Tool, CMM & Robotic Performance : Lamdamap 2021. vol. 14, euspen, pp. 54-59, 14th International Conference and Exhibition on Laser Metrology, Coordinate Measuring Machine and Machine Tool Performance, Virtual Online, 10/03/21. <https://www.euspen.eu/knowledge-base/LAM21120.pdf>

Design of a structural strain measurement system based on slotted photomicrosensors. / Fletcher, Simon; Chuku, Difference; Furness, Thomas et al.

Laser metrology and machine performance XIV: 14th International Conference and Exhibition on Laser Metrology, Machine Tool, CMM & Robotic Performance : Lamdamap 2021. ed. / Liam Blunt; Andreas Archenti. Vol. 14 euspen, 2021. p. 54-59.

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

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AB - Structural deformation in manufacturing machines, either due to thermal or finite stiffness effects, can affect their performance. Measurement of strain of a structural member is common for many safety critical systems but is not used very often for precision machinery to enable correction of resulting errors. This may be due in part to the temperature sensitivity of strain gauges or the complexity of installing many sensors to characterise complex bending of large structures often found on machines. This paper describes the design of a new strain sensing system based on a low-cost displacement sensing technique employing off-the-shelf slotted photomicrosensors and connecting rods to facilitate long range measurement. A small framework of a series of sensors is simulated with detailed analysis of the design. Finally, some preliminary validation results are presented which show sub-micron resolution and repeatability.

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BT - Laser metrology and machine performance XIV

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Fletcher S, Chuku D, Furness T , Longstaff A. Design of a structural strain measurement system based on slotted photomicrosensors. In Blunt L, Archenti A, editors, Laser metrology and machine performance XIV: 14th International Conference and Exhibition on Laser Metrology, Machine Tool, CMM & Robotic Performance : Lamdamap 2021. Vol. 14. euspen. 2021. p. 54-59 Epub 2021 Mar 11.

Design of a structural strain measurement system based on slotted photomicrosensors

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UN SDGs

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