Ground Vibration Testing Master Class: modern testing and analysis concepts applied to an F-16 aircraft

Lau, Jenny; Peeters, Bart; Debille, Jan; Guzek, Quentin; Flynn, Willam; Lange, D; Kahlmann, Timo

doi:10.1007/978-1-4419-9302-1_19

Cited by 10 publications

(4 citation statements)

References 1 publication

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“…7. Basic components of the system are electromagnetic damper, sensor, spring, linear bearing, permanent magnet, LMS Data Acquisition System and LMS Test Express Software [41]. The spring and linear bearing make the system oscillate vertically once it has been excited.…”

Section: B Experimental Test Rig Of Electromagnetic Dampermentioning

confidence: 99%

Experimental Study of Different materials on Electromagnetic Damping CharacteristicsExperimental Study of Different Materials on Electromagnetic Damping Characteristics

Yusoff,

Zaidi,

Ishak

et al. 2023

Int. J. Adv. Sci. Eng. Inf. Technol.

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Electromagnetic damper has been given special attention by many researchers and thus is among the important research areas in vibration system. This paper examines electromagnetic damper effect through simulation and experimental study. A vibration test rig incorporating a simple electromagnetic damper is designed and tested to examine the impact of electromagnetic force.The vibration system test rig can be operated as free vibration as well as a forced vibration system. In the simulation phase, the MATLAB model of the electromagnetic damper system is developed, considering its dynamic behavior. This simulation allows for the evaluation of the damper's effectiveness in reducing vibration amplitudes and settling times. Subsequently, an experimental setup is constructed to validate the simulation results. One of the key findings of this research is the comparison of different materials used as the outer cylinder of the electromagnetic damper system. The results indicate that aluminum exhibits a superior damping coefficient value of 2.8 kgs-1 compared to Nylon, which has a damping coefficient of 1.9 kgs-1. This observation highlights the significant impact of the damper's material choice on the vibration system's amplitude and settling time. The implementation of aluminum as the outer cylinder results in reduced amplitudes and quicker settling times in the vibration system. The combination of simulation and experimental studies enhances the understanding of the electromagnetic force's influence and validates the findings. The comparison of different materials for the damper's outer cylinder underscores the importance of material selection in achieving optimal damping coefficients and improved vibration system performance.

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Section: B Experimental Test Rig Of Electromagnetic Dampermentioning

confidence: 99%

Experimental Study of Different materials on Electromagnetic Damping CharacteristicsExperimental Study of Different Materials on Electromagnetic Damping Characteristics

Yusoff,

Zaidi,

Ishak

et al. 2023

Int. J. Adv. Sci. Eng. Inf. Technol.

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“…However, one disadvantage of this method is its low efficiency since one sweep only obtains one point in the backbone curve and damping-amplitude curve. Phase resonance testing (or force appropriation testing) [16], which tunes multiple shakers to excite a single-mode according to the phase lag quadrature criterion, has been widely used for large airplanes [17]. Based on the solid framework offered by the theory of Nonlinear Normal Modes (NNMs) [18], the phase resonance testing is extended to nonlinear systems [12] using multi-harmonic excitation to isolate an individual NNM.…”

Section: Introductionmentioning

confidence: 99%

Measurement and identification of the nonlinear dynamics of a jointed structure using full-field data, Part I: Measurement of nonlinear dynamics

Chen

Jana

Singh

et al. 2022

Mechanical Systems and Signal Processing

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“…Traditionally, the dynamic characteristics of an aircraft are determined using the ground vibration test (GVT) (Lau et al, 2011; Peeters et al, 2009). In the GVT, aircraft is excited by using electrodynamic shakers with a predetermined input.…”

Section: Introductionmentioning

confidence: 99%

A comparative study on in-flight modal identification of an aircraft using time- and frequency-domain techniques

Kocan

2020

Journal of Vibration and Control

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In this study, in-flight modal identification analyses are made based on vibration data collected during a flight test of an aircraft, by using two different output-only identification techniques: frequency domain decomposition and data-driven stochastic subspace identification. The purpose of this study was to evaluate and compare the efficacy of the two methods in modal parameter estimation and to validate their capability in dealing with some challenging tasks such as time tracking of modal parameters and estimating modal damping ratios. In addition, the effects of different environmental conditions and maneuvers are investigated by separating the flight-test data, such as static engine start, taxi, takeoff, cruise, roll, climb, descend, and yaw maneuvers. It is demonstrated that the selection of operational conditions and maneuvers plays a crucial role in identifying the modal parameters of the aircraft.

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Ground Vibration Testing Master Class: modern testing and analysis concepts applied to an F-16 aircraft

Cited by 10 publications

References 1 publication

Experimental Study of Different materials on Electromagnetic Damping CharacteristicsExperimental Study of Different Materials on Electromagnetic Damping Characteristics

Experimental Study of Different materials on Electromagnetic Damping CharacteristicsExperimental Study of Different Materials on Electromagnetic Damping Characteristics

Measurement and identification of the nonlinear dynamics of a jointed structure using full-field data, Part I: Measurement of nonlinear dynamics

A comparative study on in-flight modal identification of an aircraft using time- and frequency-domain techniques

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