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

Zhang Z; Oberst S; Lai JCS, 2020, 'Towards Overcoming the Challenges of the Prediction of Brake Squeal Propensity', in Oberst S; Halkon B; Ji J; Brown T (ed.), Vibration Engineering for a Sustainable Future, Active and Passive Noise and Vibration Control, Vol. 1, Springer International Publishing, http://dx.doi.org/10.1007/978-3-030-47618-2

Gong S; Oberst S; Xinwen W, 2020, 'A Non-linear Model of Rubber Shear Springs Validated by Experiments', in Lacarbonara W; Balachandran B; Ma J; Tenreiro Machado J; Stepan G (ed.), Nonlinear Dynamics of Structures, Systems and Devices Proceedings of the International Nonlinear Dynamics Conference (NODYCON 2019), |, Springer, http://dx.doi.org/10.1007/978-3-030-34713-0_32

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, pp. 53 - 78, 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

Stender M; Tiedemann M; Spieler D; Schoepflin D; Hoffmann N; Oberst S, 2021, 'Deep learning for brake squeal: Brake noise detection, characterization and prediction', Mechanical Systems and Signal Processing, vol. 149, http://dx.doi.org/10.1016/j.ymssp.2020.107181

Chiang YK; Oberst S; Melnikov A; Quan L; Marburg S; Alu A; Powell DA, 2020, 'Reconfigurable Acoustic Metagrating for High-Efficiency Anomalous Reflection', PHYSICAL REVIEW APPLIED, vol. 13, http://dx.doi.org/10.1103/PhysRevApplied.13.064067

Gong S; Oberst S; Wang X, 2020, 'An experimentally validated rubber shear spring model for vibrating flip-flow screens', Mechanical Systems and Signal Processing, vol. 139, pp. 106619 - 106619, http://dx.doi.org/10.1016/j.ymssp.2020.106619

Melnikov A; Maeder M; Friedrich N; Pozhanka Y; Wollmann A; Scheffler M; Oberst S; Powell D; Marburg S, 2020, 'Acoustic metamaterial capsule for reduction of stage machinery noise', Journal of the Acoustical Society of America, vol. 147, pp. 1491 - 1503, http://dx.doi.org/10.1121/10.0000857

Oberst S; Lai JCS; Martin R; Halkon BJ; Saadatfar M; Evans TA, 2020, 'Revisiting stigmergy in light of multi-functional, biogenic, termite structures as communication channel', Computational and Structural Biotechnology Journal, vol. 18, pp. 2522 - 2534, http://dx.doi.org/10.1016/j.csbj.2020.08.012

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; Alù A; Marburg S; Powell D, 2019, 'Acoustic meta-atom with experimentally verified maximum Willis coupling', Nature Communications, vol. 10, pp. 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

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

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

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 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

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

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 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

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

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

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 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; 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 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

Darwish A; Halkon B; Oberst S; Fitch R; Rothberg S, 2020, 'Correction of laser Doppler vibrometer measurements affected by sensor head vibration using time domain techniques', in Proceedings of the International Conference on Structural Dynamic , EURODYN, Athens, Greece, pp. 1 - 9, presented at Eurodyn, Athens, Greece, 23 November 2020 - 25 November 2020

Halkon B; Cheong I; Visser G; Walker P; Oberst S, 2020, 'An experimental assessment of torsional and package vibration in an industrial engine-compressor system', in Vibrations in Rotating Machinery 12, Liverpool, UK, pp. 1 - 10, presented at Vibrations in Rotating Machinery 12, Liverpool, UK, 14 October 2020 - 15 October 2020

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

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, http://dx.doi.org/10.1016/j.cnsns.2019.104929

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

Gong S; Oberst S; Wang X, 2019, 'A non-linear model of rubber shear springs validated by experiments', in Nonlinear Dynamics of Structures, Systems and Devices, Rome, Italy,, presented at Nonlinear Dynamics, Rome, Italy,, 17 February 2019 - 20 February 2019, http://dx.doi.org/10.1007/978-3-030-34713-0_32

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

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

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, http://www.proceedings.com/40638.html

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