Dr Sebastian Oberst

Visiting Fellow
School of Engineering and Information Technology

LOCATION

Building 16 Room 208 School of Engineering and Information Technology, The University of New South Wales, Australian Defence Force Academy, PO Box 7916, Canberra BC ACT 2610, AUSTRALIA

  • ABOUT
  • PUBLICATIONS

Expertise

  • Vibration & acoustics (numerically, experimentally)
  • Mechanical characterisation & vibration/noise control
  • Microvibrations esp. that of insects communicating
  • Nonlinear time series analysis & chaotic dynamics
  • Statistical & uncertainty analysis 

Current Research 

  1. Stability behaviour of deployable, flexible structures of nano-satellites
  2. Friction-induced vibrations & sound (e.g. automotive disc brake squeal)
  3. Vibrational communication in insects (e.g ants,  termites)

Teaching Interest

Statics, Dynamics, Thermofluids, Introduction to vibration, Acoustics, Instrumentation, Statistics


Refereed Refereed   Project supervision
Journals Conferences other HDR UG
17 >40 8 2 4



Book Chapters

Oberst S; Lai JCS; Evans T, 2019, 'Physical Basis of Vibrational Behavior – Channel Properties and Noise', in Hill PSM; Lakes-Harlan R; Narins PM; Virant-Doberlet M; Wessel A (ed.), Biotremology: Studying Vibrational Behavior, Springer, http://dx.doi.org/10.1007/978-3-030-22293-2

Lu S; Oberst S; Zhang G; Luo Z, 2019, 'Novel order patterns recurrence plot-based quantification measures to unveil deterministic dynamics from stochastic processes', in Valenzuela O; Rojas F; Pomares H; Rojas I (ed.), Theory and Applications of Time Series Analysis, Springer International Publishing, Cham, Switzerland, http://dx.doi.org/10.1007/978-3-030-26036-1

Journal articles

Lu S; Oberst S; Zhang G; Luo Z, 2019, 'Bifurcation analysis of dynamic pricing processes with nonlinear external reference effects', Communications in Nonlinear Science and Numerical Simulation, vol. 79, http://dx.doi.org/10.1016/j.cnsns.2019.104929

Stender M; Oberst S; Tiedemann M; Hoffmann N, 2019, 'Complex machine dynamics: systematic recurrence quantification analysis of disk brake vibration data', Nonlinear Dynamics, vol. 94, pp. 2483 - 2497, http://dx.doi.org/10.1007/s11071-019-05143-x

Melnikov A; Chiang YK; Quan L; Oberst S; Alu A; Marburg S; Powell D, 2019, 'Acoustic meta-atom with experimentally verified maximum Willis coupling', Nature Communications, vol. 10, pp. 3148 - 3148, http://dx.doi.org/10.1038/s41467-019-10915-5

Oberst S; Lenz M; Lai J; Evans T, 2019, 'Termites manipulate moisture content of wood to maximize foraging resources', Biology Letters, vol. 15, http://dx.doi.org/10.1098/rsbl.2019.0365

Stender M; Oberst S; Hoffmann N, 2019, 'Recovery of Differential Equations from Impulse Response Time Series Data for Model Identification and Feature Extraction', Vibration, vol. 2, pp. 25 - 46, http://dx.doi.org/10.20944/preprints201812.0237.v1

Stender M; Oberst S; Hoffmann N, 2019, 'Recovery of Differential Equations from Impulse Response Time Series Data for Model Identification and Feature Extraction', Vibration, vol. 2, pp. 25 - 46, http://dx.doi.org/10.3390/vibration2010002

Zhang Z; Oberst S; Lai JCS, 2019, 'A non-linear friction work formulation for the analysis of self-excited vibrations', Journal of Sound and Vibration, vol. 443, pp. 328 - 340, http://dx.doi.org/10.1016/j.jsv.2018.11.017

Oberst S; Lai J; Evans T, 2018, 'Key physical wood properties in termite foraging decisions', Journal of the Royal Society Interface, vol. 15, pp. 20180505 - 20180505, http://dx.doi.org/10.1098/rsif.2018.0505

Jordaan J; Punzet S; Melnikov A; Oberst S; Sanches A; Marburg S; Powell D, 2018, 'Measuring monopole and dipole polarizability of acoustic meta-atoms', Applied Physics Letters, vol. 113, http://dx.doi.org/10.1063/1.5052661

Oberst SM; Niven RK; Lester DR; Ord A; Hobbs B; Hoffmann N, 2018, 'Detection of unstable periodic orbits in mineralising geological systems', Chaos, vol. 28, pp. 085711 - 085721, http://dx.doi.org/10.1063/1.5024134

Oberst S; Baetz J; Campbell G; Lampe F; Lai JCS; Hoffmann N; Morlock M, 2018, 'Vibro-acoustic and nonlinear analysis of cadavric femoral bone impaction in cavity preparations', International Journal of Mechanical Sciences, vol. 144, pp. 739 - 745, http://dx.doi.org/10.1016/j.ijmecsci.2018.05.051

Oberst SM; Tuttle SL, 2018, 'Nonlinear dynamics of thin-walled elastic structures for applications in space', Mechanical Systems and Signal Processing, vol. 110, pp. 469 - 484, http://dx.doi.org/10.1016/j.ymssp.2018.03.021

Stender M; Tiedemann M; Hoffmann N; Oberst SM, 2018, 'Impact of an irregular friction formulation on dynamics of a minimal model for brake squeal', Mechanical Systems and Signal Processing, vol. 107, pp. 439 - 451, http://dx.doi.org/10.1016/j.ymssp.2018.01.032

Oberst S; Tuttle SL; Griffin D; Lambert A; Boyce RR, 2018, 'Experimental validation of tape springs to be used as thin-walled space structures', Journal of Sound and Vibration, vol. 419, pp. 558 - 570, http://dx.doi.org/10.1016/j.jsv.2018.01.014

Oberst SM; Marburg S; Hoffmann N, 2017, 'Determining periodic orbits via nonlinear filtering and recurrence spectra in the presence of noise', Procedia Engineering, vol. 199C, pp. 772 - 777, http://dx.doi.org/10.1016/j.proeng.2017.09.046

Oberst SM; Bann G; Lai JCS; Evans TA, 2017, 'Cryptic termites avoid predatory ants by listening to vibrational cues from their footsteps', Ecology Letters, vol. 20, pp. 212 - 221, http://dx.doi.org/10.1111/ele.12727

Oberst SM; Zhang Z; Lai JCS, 2016, 'The role of nonlinearity and uncertainty in assessing disc brake squeal propensity', SAE International Journal of Passenger Cars: Mechanical Systems, vol. 9, pp. 2016-01-1777 - 2016-01-1777, http://dx.doi.org/10.4271/2016-01-1777

Zhang Z; Oberst SM; Lai JCS, 2016, 'On the potential of uncertainty analysis in disc brake squeal', Journal of Sound and Vibration, vol. 377, pp. 1 - 15, http://dx.doi.org/10.1016/j.jsv.2016.05.023

Oberst SM; Lai JCS; Evans TA, 2016, 'Termites utilise clay to build structural supports and so increase foraging resources', Scientific Reports, vol. 6, pp. 20990 - 20994, http://dx.doi.org/10.1038/srep20990

Oberst SM, 2016, 'A systematic statistical approach to investigate key material parameters in termite foraging', PeerJ (Preprint), pp. 1 - 19

Zhang Z; Oberst SM; Lai JCS, 2015, 'Instability analysis of friction oscillators with uncertainty in friction law distribution', Proceedings of the Institution of Mechanical Engineers Part C: Journal of Mechanical Engineering Science, vol. 230, pp. 948 - 958, http://dx.doi.org/10.1177/0954406215616421

Oberst SM; Lai JCS, 2015, 'Squeal noise in simple numerical brake models', Journal of Sound and Vibration, vol. 352, pp. 129 - 141, http://dx.doi.org/10.1016/j.jsv.2015.05.005

Oberst SM; Nava-Baro E; Lai JCS; Evans TA, 2015, 'An innovative signal processing technique for the extraction of ants' walking signals', Acoustics Australia, vol. 43, pp. 1 - 12, http://dx.doi.org/10.1007/s40857-015-0003-x

Oberst SM; Lai JCS, 2015, 'Pad-mode-induced instantaneous mode instability for simple models of brake systems', Mechanical Systems and Signal Processing, vol. 62, pp. 1 - 15, http://dx.doi.org/10.1016/j.ymssp.2015.03.023

Oberst S; Lai JCS, 2015, 'Nonlinear transient and chaotic interactions in disc brake squeal', Journal of Sound and Vibration, vol. 342, pp. 272 - 289, http://dx.doi.org/10.1016/j.jsv.2015.01.005

Oberst SM; Lai JCS, 2015, 'A statistical approach to estimate the Lyapunov spectrum in disc brake squeal', Journal of Sound and Vibration, vol. 334, pp. 120 - 135, http://dx.doi.org/10.1016/j.jsv.2014.06.025

Oberst SM; Baro EN; Lai JCS; Evans TA, 2014, 'Quantifying ant activity using vibration measurements', PLoS ONE, vol. 9, pp. e90902 - 1, http://dx.doi.org/10.1371/journal.pone.0090902

Oberst SM; Evans, TA ; Lai JCS, 2014, 'Novel method for pairing wood samples in choice tests', PLoS ONE, vol. 9, pp. 1 - 7, http://dx.doi.org/10.1371/journal.pone.0088835

Oberst SM; Lai JC; Marburg S, 2013, 'Guidelines for numerical vibration and acoustic analysis of disc brake squeal using simple models of brake systems', Journal of Sound and Vibration, vol. 332, pp. 2284 - 2299, http://dx.doi.org/10.1016/j.jsv.2012.11.034

Oberst SM; Lai JC, 2011, 'Statistical analysis of brake squeal noise', Journal of Sound and Vibration, vol. 330, pp. 2978 - 2994, http://dx.doi.org/10.1016/j.jsv.2010.12.021

Oberst SM; Lai JC, 2011, 'Chaos in Brake Squeal Noise', Journal of Sound and Vibration, vol. 330, pp. 955 - 975, http://dx.doi.org/10.1016/j.jsv.2010.09.009

Merz S; Oberst SM; Dylejko PG; Kessissoglou N; Tso YK; Marburg S, 2007, 'Development of coupled FE/BE models to investigate the structural and acoustic responses of a submerged vessel.', Journal of Computational Acoustics, vol. 15, pp. 23 - 47, http://dx.doi.org/10.1142/S0218396X07003196

Conference Papers

Melnikov A; Chiang YK; Quan L; Oberst S; Alu A; Marburg S; Powell D, 2019, 'Experimental validation of maximal Willis coupling in an acoustic meta-atom', Rome, presented at Metamaterials 2019, Rome, 16 September 2019 - 21 September 2019, http://congress2019.metamorphose-vi.org/index.php/component/svisor/?task=showScheduleSvisor&Itemid=156

Rauter A; Halkon B; Oberst S; Marburg S, 2019, 'Research and development of an air-puff excitation system for lightweight structures', Copenhagen, presented at 8th International Operational Modal Analysis Conference 2019, Copenhagen, 12 May 2019 - 15 May 2019

Gong S; Oberst S; Wang X, 2019, 'A non-linear model of rubber shear springs validated by experiments', Rome, Italy,, presented at Nonlinear Dynamics, Rome, Italy,, 17 February 2019 - 20 February 2019

Gong S; Oberst S; Wang X, 2019, 'Dynamic analysis of vibrating flip-flow screens equipped with support and shear rubber springs', in Journal of Physics : Conference Series, Institute of Physics (IoP), Lyon, France,, pp. 1 - 12, presented at RASD2019 - Recent Advances in Structural Dynamics, Lyon, France,, 15 April 2019 - 17 April 2019, http://dx.doi.org/10.1088/1742-6596/1264/1/012061

Lu S; Oberst S; Zhang G; Luo Z, 2019, 'Period adding bifurcations in dynamic pricing processes', Shenzhen, China, presented at IEEE CIFEr 2019: 2019 IEEE Conference on Computational Intelligence for Financial Engineering and Economics, Shenzhen, China, 04 May 2019 - 05 May 2019

Lai JCS; Oberst S; Evans TA, 2018, 'Termites use vibrations to eavesdrop on predatory ants', in INTER-NOISE 2018 - 47th International Congress and Exposition on Noise Control Engineering: Impact of Noise Control Engineering

Gong S; Wang X; Oberst S, 2018, 'Non-linear analysis of vibrating flip-flow screens', in MATEC Web of Conferences, EDP Sciences, pp. 04007 - 04010, http://dx.doi.org/10.1051/matecconf/201822104007

Oberst S; Lai JCS; Evans TA, 2018, 'Excitation signal extraction of ant walking pattern under the influence of noise using a biomechanical bipedal mathematical model', in Symposium on Biotremology, 2nd International Symposium on Biotremology, San Michele all’Adige, Italy., presented at 2nd International Symposium on Biotremology, San Michele all’Adige, Italy., 04 September 2018 - 06 September 2018

Lu S; Oberst SM; Zhang G; Luo Z, 2018, 'Order patterns recurrence plots and new quantifications to unveil nonlinear dynamics from stochastic systems', in Valenzuela O; Rojas F; Pomares H; Rojas I (eds.), ITISE 2018 International Conference on Time Series and Forecasting Proceedings of Papers, International Conference on Time Series and Forecasting 2018, Granada, Spain, pp. 457 - 468, presented at International Conference on Time Series and Forecasting 2018, Granada, Spain, 19 September 2018 - 21 September 2018

Zhang Z; Oberst SM; Lai JCS, 2018, 'Instability analysis of brake squeal with uncertain contact conditions', in Proceedings of 25th International Congress on Sound and Vibration 2018 (ICSV 25), International Institute of Acoustics & Vibration (IIAV), Hiroshima, Japan, pp. 4031 - 4038, presented at International Congress on Sound and Vibration, Hiroshima, Japan, 08 July 2018 - 12 July 2018

Gong S; Wang X; Oberst S, 2018, 'Non-linear Analysis of Vibrating Flip-flow Screens', in MATEC Web of Conferences, 3rd International Conference on Design and Manufacturing Engineering, Monash University, Melbourne, Australia, presented at 3rd International Conference on Design and Manufacturing Engineering, Monash University, Melbourne, Australia, 16 - 18 July 2018, http://dx.doi.org/10.1051/matecconf/201822104007

Oberst SM, 2018, 'Nonlinear Dynamics: Towards a paradigm change via evidence-based complex dynamics modelling', in INTER-NOISE and NOISE-CON Congress and Conference Proceedings, NOVEM 2018, Institute of Noise Control Engineering, Ibiza, pp. 173 - 184, presented at Noise and Vibration Emerging Methods, Ibiza, 07 May 2018 - 09 May 2018

Zhang Z; Oberst SM; Lai JCS, 2017, 'Uncertainty Analysis for the Prediction of Disc Brake Squeal Propensity', in Internoise 2017, Hong Kong, China, presented at Internoise 2017, Hong Kong, China, 27 August 2017 - 30 August 2017

Hobbs B; Ord A; Oberst SM; Niven RK, 2017, 'Nonlinear episodic and chaotic behaviour of orogenic gold systems', in 18th Annual Conference of the International Association for Mathematical Geosciences, 18th Annual Conference of the International Association for Mathematical Geosciences, Freemantle, presented at 18th Annual Conference of the International Association for Mathematical Geosciences, Freemantle, 02 September 2017 - 09 September 2017

Ord A; Hobbs B; Munro M; Oberst SM; Niven RK, 2017, 'Evidence-based geological models: how to comprehend big data', in 18th annual conference of the International Association for Mathematical Geosciences, 8th Annual Conference of the International Association for Mathematical Geosciences, Freemantle, presented at 8th Annual Conference of the International Association for Mathematical Geosciences, Freemantle, 02 September 2017 - 09 September 2017

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