World's Best Scientists 2026 revealed!

D-Index & Metrics

Mechanical and Aerospace Engineering

D-Index
45
Citations
7559
World Ranking
1536
National Ranking
599

Electronics and Electrical Engineering

D-Index
45
Citations
7530
World Ranking
3581
National Ranking
1315

Nejat Olgac publication distribution in Mechanical and Aerospace Engineering in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Mechanical and Aerospace Engineering in 2026. The highlighted bar marks where Nejat Olgac sits on this spectrum.

47–56 publications: 10 scientists 57–66 publications: 23 scientists 67–76 publications: 32 scientists 77–86 publications: 62 scientists 87–96 publications: 67 scientists 97–106 publications: 91 scientists 107–116 publications: 113 scientists 117–126 publications: 115 scientists 127–136 publications: 130 scientists 137–146 publications: 140 scientists 147–156 publications: 155 scientists 157–166 publications: 132 scientists 167–176 publications: 133 scientists 177–186 publications: 130 scientists 187–196 publications: 140 scientists 197–206 publications: 115 scientists 207–216 publications: 125 scientists 217–226 publications: 117 scientists 227–236 publications: 99 scientists 237–246 publications: 92 scientists 247–256 publications: 100 scientists 257–266 publications: 95 scientists 267–276 publications: 88 scientists 277–286 publications: 77 scientists 287–296 publications: 74 scientists 297–306 publications: 74 scientists 307–316 publications: 62 scientists 317–326 publications: 70 scientists 327–336 publications: 59 scientists 337–346 publications: 58 scientists 347–356 publications: 45 scientists 357–366 publications: 44 scientists 367–376 publications: 36 scientists 377–386 publications: 41 scientists 387–396 publications: 32 scientists 397–406 publications: 23 scientists 407–416 publications: 28 scientists 417–426 publications: 27 scientists 427–436 publications: 25 scientists 437–446 publications: 23 scientists 447–456 publications: 23 scientists 457–466 publications: 20 scientists 467–476 publications: 12 scientists 477–486 publications: 24 scientists 487–496 publications: 18 scientists 497–506 publications: 12 scientists 507–516 publications: 13 scientists 517–526 publications: 21 scientists 527–536 publications: 12 scientists 537–546 publications: 8 scientists 547–556 publications: 16 scientists 557–566 publications: 3 scientists 567–576 publications: 11 scientists 577–586 publications: 6 scientists 587–596 publications: 5 scientists 597–606 publications: 6 scientists 607–616 publications: 7 scientists 617–626 publications: 7 scientists 627–636 publications: 10 scientists 637–646 publications: 4 scientists 647–656 publications: 3 scientists 657–658 publications: 2 scientists 659+ publications: 100 scientists
47 publications 659+

This scientist: 264 publications — 64th percentile

64% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 659 publications or more.

Nejat Olgac D-index placement in Mechanical and Aerospace Engineering in 2026

The chart shows the D-index (discipline H-index) distribution of Mechanical and Aerospace Engineering scientists ranked by Research.com in 2026. The highlighted bar marks where Nejat Olgac sits on this spectrum.

30 D-Index: 83 scientists 31 D-Index: 113 scientists 32 D-Index: 144 scientists 33 D-Index: 153 scientists 34 D-Index: 189 scientists 35 D-Index: 158 scientists 36 D-Index: 139 scientists 37 D-Index: 127 scientists 38 D-Index: 130 scientists 39 D-Index: 126 scientists 40 D-Index: 104 scientists 41 D-Index: 100 scientists 42 D-Index: 107 scientists 43 D-Index: 101 scientists 44 D-Index: 103 scientists 45 D-Index: 79 scientists 46 D-Index: 88 scientists 47 D-Index: 70 scientists 48 D-Index: 83 scientists 49 D-Index: 44 scientists 50 D-Index: 64 scientists 51 D-Index: 56 scientists 52 D-Index: 50 scientists 53 D-Index: 48 scientists 54 D-Index: 58 scientists 55 D-Index: 52 scientists 56 D-Index: 48 scientists 57 D-Index: 42 scientists 58 D-Index: 34 scientists 59 D-Index: 42 scientists 60 D-Index: 37 scientists 61 D-Index: 42 scientists 62 D-Index: 44 scientists 63 D-Index: 22 scientists 64 D-Index: 33 scientists 65 D-Index: 29 scientists 66 D-Index: 23 scientists 67 D-Index: 29 scientists 68 D-Index: 24 scientists 69 D-Index: 19 scientists 70 D-Index: 34 scientists 71 D-Index: 26 scientists 72 D-Index: 19 scientists 73 D-Index: 18 scientists 74 D-Index: 19 scientists 75 D-Index: 14 scientists 76 D-Index: 19 scientists 77 D-Index: 8 scientists 78 D-Index: 18 scientists 79 D-Index: 16 scientists 80 D-Index: 12 scientists 81 D-Index: 17 scientists 82 D-Index: 11 scientists 83 D-Index: 16 scientists 84 D-Index: 7 scientists 85 D-Index: 9 scientists 86 D-Index: 8 scientists 87 D-Index: 6 scientists 88 D-Index: 6 scientists 89 D-Index: 7 scientists 90 D-Index: 10 scientists 91 D-Index: 4 scientists 92 D-Index: 4 scientists 93+ D-Index: 100 scientists
30 D-Index 93+

This scientist: 45 D-Index — 57th percentile

57% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 93 D-Index or more.

Overview

Nejat Olgac is affiliated with the University of Connecticut in the United States and has conducted research primarily in the field of engineering, with a focus on civil and structural engineering, biomedical engineering, control and systems engineering, modeling and simulation, and mechanical engineering.

The scientist's main research topics include vibration control and rheological fluids, seismic performance and analysis, acoustic wave phenomena research, vibration and dynamic analysis, fractional differential equations solutions, advanced control systems design, and acoustic wave resonator technologies.

Nejat Olgac's recent publications cover several areas of vibration science and control technology. Recent papers include:

  • Actively Tuned Noncollocated Vibration Absorption: An Unexplored Venue in Vibration Science and a Benchmark Problem (2020, IEEE Transactions on Control Systems Technology)
  • Control design, analysis, and optimization of fractional-order delayed resonator for complete vibration absorption (2023, Journal of Sound and Vibration)
  • A Robust Delayed Resonator Construction Using Amplifying Mechanism (2022, Journal of vibration and acoustics)
  • Delayed resonator with multiple distributed delays - Considering and optimizing the inherent loop delay (2024, Journal of Sound and Vibration)
  • Benchmark Problem: Non-collocated Vibration Absorption Concept Challenges and Trends (2022, IFAC-PapersOnLine)

Frequent collaborators in Olgac's research include:

  • Yifan Liu
  • Ryan Jenkins
  • Jiazhi Cai
  • Qingbin Gao
  • Cheng Li

Nejat Olgac's work has been published in journals that regularly feature research on vibration and control systems technology, as well as sound and vibration studies. Frequent publication venues include:

  • Journal of Sound and Vibration
  • IEEE Transactions on Control Systems Technology
  • Journal of Vibration and Acoustics
  • IFAC-PapersOnLine
  • Advances in Mechanical Engineering

Best Publications

  • An exact method for the stability analysis of time-delayed linear time-invariant (LTI) systems

    N. Olgac;R. Sipahi

  • A novel active vibration absorption technique : delayed resonator

    N. Olgac;B.T. Holm-Hansen

  • Sliding mode control with perturbation estimation (SMCPE): a new approach

    Hakan Elmali;Nejat Olgac

  • Complete stability robustness of third-order LTI multiple time-delay systems

    Rifat Sipahi;Nejat Olgac

  • Robust output tracking control of nonlinear MIMO systems via sliding mode technique

    Hakan Elmali;Nejat Olgac

  • Implementation of sliding mode control with perturbation estimation (SMCPE)

    H. Elmali;N. Olgac

  • Stability Robustness Analysis of Multiple Time- Delayed Systems Using “Building Block” Concept

    H. Fazelinia;R. Sipahi;N. Olgac

  • Sliding Mode Control With Sliding Perturbation Observer

    Jairo Terra Moura;Hakan Elmali;Nejat Olgac

  • Active Vibration Control of Distributed Systems Using Delayed Resonator With Acceleration Feedback

    Nejat Olgac;Hakan Elmali;Martin Hosek;Mark Renzulli

  • Brief A practical method for analyzing the stability of neutral type LTI-time delayed systems

    Nejat Olgac;Rifat Sipahi

  • A unique methodology for the stability robustness of multiple time delay systems

    Rifat Sipahi;Nejat Olgac

  • Extended Kronecker Summation for Cluster Treatment of LTI Systems with Multiple Delays

    Ali Fuat Ergenc;Nejat Olgac;Hassan Fazelinia

  • A new perspective and analysis for regenerative machine tool chatter

    Nejat Olgac;Martin Hosek

  • An Exact Method for the Stability Analysis of Linear Consensus Protocols With Time Delay

    R. Cepeda-Gomez;N. Olgac

  • Dynamics and Stability of Variable-pitch Milling:

    Nejat Olgac;Rifat Sipahi

  • MODAL ANALYSIS OF FLEXIBLE BEAMS WITH DELAYED RESONATOR VIBRATION ABSORBER: THEORY AND EXPERIMENTS

    N. Olgac;N. Jalili

  • MULTIPLE DELAYED RESONATOR VIBRATION ABSORBERS FOR MULTI-DEGREE-OF-FREEDOM MECHANICAL STRUCTURES

    N. Jalili;N. Olgac

  • Tunable Active Vibration Absorber: The Delayed Resonator

    Nejat Olgac;Brian Holm-Hansen

  • Delayed resonator with acceleration feedback - Complete stability analysis by spectral methods and vibration absorber design

    Tomáš Vyhlídal;Nejat Olgac;Vladimír Kučera

  • A Unique Methodology for Chatter Stability Mapping in Simultaneous Machining

    Nejat Olgac;Rifat Sipahi

  • Theory and implementation of sliding mode control with perturbation estimation (SMCPE)

    H. Elmali;N. Olgac

Frequent Co-Authors

Rifat Sipahi
Rifat Sipahi Northeastern University
Nader Jalili
Nader Jalili University of Alabama
Richard W. Longman
Richard W. Longman Columbia University
John D. Biggers
John D. Biggers Harvard University
Vladimír Kučera
Vladimír Kučera Czech Technical University in Prague
Mehmet Toner
Mehmet Toner Harvard University
Kevin C K Lloyd
Kevin C K Lloyd University of California, Davis
Silviu-Iulian Niculescu
Silviu-Iulian Niculescu CentraleSupélec

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