Matt Tipuric’s research while affiliated with The University of Sheffield and other places

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Publications (2)


Multiple-input, multiple-output modal testing of a Hawk T1A aircraft: a new full-scale dataset for structural health monitoring
  • Article

December 2024

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67 Reads

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1 Citation

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Matt Tipuric

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[...]

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The use of measured vibration data from structures has a long history of enabling the development of methods for inference and monitoring. In particular, applications based on system identification and structural health monitoring have risen to prominence over recent decades and promise significant benefits when implemented in practice. However, significant challenges remain in the development of these methods. The introduction of realistic, full-scale datasets will be an important contribution to overcoming these challenges. This article presents a new benchmark dataset capturing the dynamic response of a decommissioned BAE Systems Hawk T1A. The dataset reflects the behaviour of a complex structure with a history of service that can still be tested in controlled laboratory conditions, using a variety of known loading and damage simulation conditions. As such, it provides a key stepping stone between simple laboratory test structures and in-service structures. In this article, the Hawk structure is described in detail, alongside a comprehensive summary of the experimental work undertaken. Following this, key descriptive highlights of the dataset are presented, before a discussion of the research challenges that the data present. Using the dataset, non-linearity in the structure is demonstrated, as well as the sensitivity of the structure to damage of different types. The dataset is highly applicable to many academic enquiries and additional analysis techniques which will enable further advancement of vibration-based engineering techniques.


Figure 1: The Hawk at the Laboratory for Verification and Validation.
Figure 2: The port wing of the Hawk during instrumentation.
Figure 3: Summary sensor placement sketch for the Hawk, showing the locations of the nearside ( ), farside ( ) and triaxial ( ) accelerometers on the main chassis. Also shown are the locations of the datums (SW, SS, PS, and PW) relative to the global datum, A. The substructures highlighted in magenta are detailed in Figures 4-7. The diagram is not shown to scale -for precise locations, refer to the data set [15].
Figure 4: Schematic diagram for the starboard wing, showing the location of the accelerometers ( ), FBG ( ), shakers ( ), and pseudo-damage ( ). Not to scale.
Figure 5: Schematic diagram for the port wing, showing the location of the accelerometers ( ), FBG ( ), shakers ( ), pseudo-damage ( ), and removed panels ( ). Not to scale.

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Multiple-input, multiple-output modal testing of a Hawk T1A aircraft: A new full-scale dataset for structural health monitoring
  • Preprint
  • File available

June 2024

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138 Reads

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1 Citation

The use of measured vibration data from structures has a long history of enabling the development of methods for inference and monitoring. In particular, applications based on system identification and structural health monitoring have risen to prominence over recent decades and promise significant benefits when implemented in practice. However, significant challenges remain in the development of these methods. The introduction of realistic, full-scale datasets will be an important contribution to overcoming these challenges. This paper presents a new benchmark dataset capturing the dynamic response of a decommissioned BAE Systems Hawk T1A. The dataset reflects the behaviour of a complex structure with a history of service that can still be tested in controlled laboratory conditions, using a variety of known loading and damage simulation conditions. As such, it provides a key stepping stone between simple laboratory test structures and in-service structures. In this paper, the Hawk structure is described in detail, alongside a comprehensive summary of the experimental work undertaken. Following this, key descriptive highlights of the dataset are presented, before a discussion of the research challenges that the data present. Using the dataset, non-linearity in the structure is demonstrated, as well as the sensitivity of the structure to damage of different types. The dataset is highly applicable to many academic enquiries and additional analysis techniques which will enable further advancement of vibration-based engineering techniques.

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Citations (1)


... Additionally, there is a general lack of aeronautically relevant examples for SHM, with the notable exception of [18], [19]. This was recently addressed by the Laboratory for Verification and Validation (LVV) at the University of Sheffield, which performed a thorough vibration testing campaign for a full-scale trainer jet aircraft [20] and has released the dataset [21]. This includes vibration data from different input signals, including simulated and real damaged cases in a MIMO configuration, offering a thorough standard for future identification and damage detection methods. ...

Reference:

Multi-input Multi-output Loewner Framework for Vibration-based Damage Detection on a Trainer Jet
Multiple-input, multiple-output modal testing of a Hawk T1A aircraft: A new full-scale dataset for structural health monitoring