Temperature measurements on fast-rotating objects using a thermographic camera with an optomechanical image derotator

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dc.identifier.uri http://dx.doi.org/10.15488/3388
dc.identifier.uri http://www.repo.uni-hannover.de/handle/123456789/3418
dc.contributor.author Altmann, Bettina
dc.contributor.author Pape, Christian
dc.contributor.author Reithmeier, Eduard
dc.date.accessioned 2018-05-23T11:04:00Z
dc.date.available 2018-05-23T11:04:00Z
dc.date.issued 2017
dc.identifier.citation Altmann, B.; Pape, C.; Reithmeier, E.: Temperature measurements on fast-rotating objects using a thermographic camera with an optomechanical image derotator. In: Proceedings of SPIE 10404 (2017), 104040P. DOI: https://doi.org/10.1117/12.2271817
dc.description.abstract Increasing requirements concerning the quality and lifetime of machine components in industrial and automotive applications require comprehensive investigations of the components in conditions close to the application. Irregularities in heating of mechanical parts reveal regions with increased loading of pressure, draft or friction. In the long run this leads to damage and total failure of the machine. Thermographic measurements of rotating objects, e.g., rolling bearings, brakes, and clutches provide an approach to investigate those defects. However, it is challenging to measure fast-rotating objects accurately. Currently one contact-free approach is performing stroboscopic measurements using an infrared sensor. The data acquisition is triggered so that the image is taken once per revolution. This leads to a huge loss of information on the majority of the movement and to motion blur. The objective of this research is showing the potential of using an optomechanical image derotator together with a thermographic camera. The derotator follows the rotation of the measurement object so that quasi-stationary thermal images during motion can be acquired by the infrared sensor. Unlike conventional derotators which use a glass prism to achieve this effect, the derotator within this work is equipped with a sophisticated reflector assembly. These reflectors are made of aluminum to transfer infrared radiation emitted by the rotating object. Because of the resulting stationary thermal image, the operation can be monitored continuously even for fast-rotating objects. The field of view can also be set to a small off-axis region of interest which then can be investigated with higher resolution or frame rate. To depict the potential of this approach, thermographic measurements on a rolling bearings in different operating states are presented. © 2017 SPIE. eng
dc.language.iso eng
dc.publisher Bellingham, WA : S P I E - International Society for Optical Engineering
dc.relation.ispartof Infrared Sensors, Devices, and Applications VII 2017, 9-10 August 2017, San Diego, California, United States
dc.relation.ispartofseries Proceedings of SPIE 10404 (2017)
dc.rights Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden. Dieser Beitrag ist aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
dc.subject Infrared imaging eng
dc.subject Optomechanical image derotator eng
dc.subject Rolling bearings eng
dc.subject Rotating machinery eng
dc.subject Temperature measurements eng
dc.subject Bearings (machine parts) eng
dc.subject Cameras eng
dc.subject Data acquisition eng
dc.subject Image segmentation eng
dc.subject Infrared detectors eng
dc.subject Infrared devices eng
dc.subject Infrared imaging eng
dc.subject Infrared radiation eng
dc.subject Machine components eng
dc.subject Machinery eng
dc.subject Reflection eng
dc.subject Rotating machinery eng
dc.subject Shafts (machine components) eng
dc.subject Temperature measurement eng
dc.subject Thermography (imaging) eng
dc.subject Automotive applications eng
dc.subject Higher resolution eng
dc.subject Optomechanical eng
dc.subject Region of interest eng
dc.subject Rolling bearings eng
dc.subject Stroboscopic measurements eng
dc.subject Thermographic cameras eng
dc.subject Thermographic measurement eng
dc.subject Roller bearings eng
dc.subject.ddc 620 | Ingenieurwissenschaften und Maschinenbau ger
dc.title Temperature measurements on fast-rotating objects using a thermographic camera with an optomechanical image derotator
dc.type article
dc.type conferenceObject
dc.type Text
dc.relation.issn 0277-786X
dc.relation.doi https://doi.org/10.1117/12.2271817
dc.bibliographicCitation.volume 10404
dc.bibliographicCitation.firstPage 104040P
dc.description.version publishedVersion
tib.accessRights frei zug�nglich

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