Faculty Directory

Modarres, Mohammad

Modarres, Mohammad

Nicole Y. Kim Eminent Professor
Director, Center for Risk and Reliability
Mechanical Engineering
Maryland Energy Innovation Institute
Center for Risk and Reliability
0151C Glenn L. Martin Hall, Building 088


  • Ph.D., Massachusetts Institute of Technology, 1980


Dr. Modarres is the Nicole Y. Kim Eminent Professor at the University of Maryland. Within the A. James Clark School of Engineering of the University of Maryland. He co-founded the world’s first degree-granting graduate curriculum in reliability engineering at the University of Maryland. As the University of Maryland Center for Risk and Reliability Director, Dr. Modarres serves as an international expert on reliability and risk analysis. He has authored numerous books, book chapters, and hundreds of scholarly papers on risk and reliability engineering. His research areas are probabilistic risk assessment, materials degradation science, probabilistic physics of failure, and probabilistic fracture mechanics. His interests in risk, reliability, structural integrity and prognosis, and health management include both experimental and probabilistic model development efforts. He is a recipient of multiple awards.  Dr. Modarres received his BS in Mechanical Engineering from Tehran Polytechnic, MS in Mechanical Engineering from MIT, and MS and Ph.D. in Nuclear Engineering from MIT.


  • Nicole Y. Kim Eminent Professorship in Engineering
  • Minta Martin Professorship in A.J. Clark School of Engineering
  • University of Maryland Distinguished Scholar-Teacher
  • 2019 Tommy Thompson Award for outstanding lifetime contributions to nuclear safety, American Nuclear Society 
  • Fellow, American Nuclear Society
  • Fellow, Institute of Electrical and Electronics Engineers
  • 1996 Maryland Inventor of the Year Award (in Information Sciences)
  • FDA Commissioner Special Citation for Contributions to Risk Assessment Methods, 2004
  • 2008 International Research Leadership Award conferred by the Society for Reliability Engineering, Quality and Operations Management

Probabilistic risk assessment, Uncertainty analysis, Probabilistic Physics of Failure, Probabilistic Fracture Mechanics, Prognosis and Health Management, Materials Degradation Science

Recent Books and Journal Papers

  • Probabilistic Risk Assessment, Wiley Encyclopedia of Electrical and Electronics Engineering, John Wiley & Sons, 2018.Reliability Engineering and Risk Analysis:  A Practical Guide, M. Modarres, M. Kaminskiy, and V. Krivtsov, CRC Press, New York, N.Y., 1st Ed. (1999), 2nd Ed. (2010), 3rd Ed. (2017).
  • Probabilistic Physics of Failure, in Advances in Performability Engineering, Prof. Krishna Misra (Ed.), (2021), ISBN 978-3-030-55732-4.
  • Probabilistic Risk Assessment, Encyclopedia of Nuclear Energy, Professor Ehud Greenspan & Dr. Joy Rempe (Eds.), Elsevier, 2021, ISBN: 9780128197257.
  • Probabilistic Risk Assessment, Wiley Encyclopedia of Electrical and Electronics Engineering, John Wiley & Sons, 2018.
  • Big Machinery Data Preprocessing Methodology for Data-Driven Models in Prognostics and Health Management, S. Cofre-Martel, E. Droguett, M. Modarres, Sensors, October 2021, 21(20), 6841; https://doi.org/10.3390/s21206841 

  • A Bayesian Network Approach for Modeling Dependent Seismic Failures in a Nuclear Power Plant Probabilistic Risk Assessment, J. DeJesus Segarra, M. Bensi, M. Modarres, Submitted Reliability Engineering and System Safety J., 213 (2021) 107678, https://doi.org/10.1016/j.ress.2021.107678 

  • Multi-Unit Nuclear Power Plant Probabilistic Risk Assessment: A Comprehensive Survey, T. Zhou, M. Modarres, E. López Droguett. Submitted for publication to Reliability Engineering and System Safety J. Reliability Engineering and System Safety 213 (2021) 107782, https://doi.org/10.1016/j.ress.2021.107782

  • Acoustic emission signal clustering in CFRP laminates using a new feature set based on waveform analysis and information entropy analysis, S. F. Karimian, M. Modarres, Composite Structures J., Vol. 268, July 2021, 113987, https://doi.org/10.1016/j.compstruct.2021.113987 

  • Remaining Useful Life Estimation Through Deep Learning Partial Differential Equation Models: A Framework for Degradation Dynamics Interpretation Using Latent Variables, S. Cofre, E. López Droguett, M. Modarres, Shock and Vibration. 2021, 9937846, https://doi.org/10.1155/2021/9937846

  • Understanding and Effectively Managing Conservatisms in Safety Analysis, M. Modarres, S. Krahn, J. O’Brien, Nuclear Technology J., 2020,  https://doi.org/10.1080/00295450.2020.1805258 

  • Layout Optimization of Multi-type Sensors and Human Inspection Tools with Probabilistic Detection of Localized Damages for Pipelines, A. Aria, S. Azarm, and M. Modarres, IEEE Access J., Vol. 9, 10.1109/ACCESS.2020.2992671.

  • Extension of Probabilistic Seismic Hazard Analysis to Account for Spatial Variability of Ground Motions at a Multi-Unit Nuclear Power Plant Site, J. DeJesus-Segarra, M. Bensi, M. Modarres, and T. Weaver, Structural Safety J., Vol. 85, 101985, https://doi.org/10.1016/j.strusafe.2020.101958.

  • A Deep Adversarial Approach Based on Multi-sensor Fusion for Semi-supervised Remaining Useful Life Prognostics, D. Verstraete, E. Droguett, M. Modarres, Sensors, 20, 176 (2020), https://doi:10.3390/s20010176.

  • A Common Cause Failure Model for Components Under Age-Related Degradation, T. Zhou, E. Droguett, M. Modarres, Reliability Engineering and System Safety J., Vol.195 (2020), https://doi.org/10.1016/j.ress.2019.106699.

  • A New Method for Detecting Fatigue Crack Initiation in Aluminum Alloy Using Acoustic Emission Waveform Information Entropy, S. F. Karimian, H. A. Bruck, and M. Modarres, Engineering Fracture Mechanics, Vol. 223 (2020) https://doi.org/10.1016/j.engfracmech.2019.106771.

  •  Thermodynamic Entropy to Detect Fatigue Crack Initiation Using Digital Image Correlation, and Effect of Overload Spectrums, F. Karimian, H. Bruck, M. Modarres, International Journal of Fatigue, 129 (2019). https://doi.org/10.1016/j.ijfatigue.2019.105256.

  • Estimation of Damage Size and Remaining Useful Life in Degraded Structures through Deep-Learning Based Multi-Source Data Fusion, A. Aria, E. Droguett, S. Azarm, and M. Modarres, Structural Health Monitoring J., (2019). https://doi.org/10.1177/1475921719890616

  • Modeling Uncertainty in Reliability Growth Planning for Discrete-Use Systems, P. Nation and M. Modarres, Australian Journal of Multidisciplinary Engineering, Vol. 15, No.1, 2019. https://doi.org/10.1080/14488388.2019.1661808.

  • Measures of Entropy to Characterize Fatigue Damage in Metallic Materials, H. Yun and M. Modarres, Entropy J., 21, 804. DOI: https://doi.org/10.3390/e21080804.

  • Deep Semi-Supervised Generative Adversarial Fault Diagnostics of Rolling Element Bearings, D. Verstraete, E. Droguett, A. Ferrada, V. Meruane, M. Modarres, Structural Health Monitoring J., pp.1–22 (2019). DOI: https://doi.org/10.1177/1475921719850576.

  • Multi-Unit Risk Aggregation with Consideration of Uncertainty and Bias in Risk Metrics, T. Zhou, M. Modarres, E. Droguett, Reliability Engineering and System Safety J., Volume 188,  Pages 473-482,(2019), https://doi.org/10.1016/j.ress.2019.04.001.


Center for Risk and Reliability Fosters Collaborative Environment

The Center for Risk and Reliability renovated their space to enhance multidisciplinary collaboration.

'They Are Playing With a Huge Fire'

With Ukraine's massive Zaporizhzhia plant in Putin's crosshairs, nuclear facilities must be taken off battlefield, UMD risk expert says.

Kiger Named Distinguished Scholar-Teacher

Mechanical engineering professor recognized for his achievements in research and pedagogy.

Clark School to Induct Reyes into Innovation Hall of Fame

The NuScale co-founder will address the UMD community during a ceremony on December 2.

Assessing Nuclear Risk: CEE, ME Faculty Collaborate on New Tools

Research aims to explore updates to risk assessment tools and methods used by the nuclear industry.


A Collaboration Between CRR and Amazon Lab126 Seeks to Understand How Devices Can Be More Durable

Nuclear Pioneer Reyes Achieves Historic Milestone

NuScale Power, co-founded by UMD alumnus José Reyes, is the first to win NRC approval for a small modular reactor (SMR) design.

UMD workshop examines risks related to new transportation technology

Key concerns include vehice safety, software reliabillity, and cybersecurity.

Bensi, Groth Selected for Nuclear Facility Risk Assessment Faculty Development Program

The inter-department program will support junior faculty in developing solutions to advance probabilistic risk assessments.

Alumni Dr. Jeong H. Kim Receives 2016 Horatio Alger Award

Kim named one of 13 exceptional corporate and civic leaders to the Horatio Alger Member Class of 2016

Bruck Named a UMD Distinguished Scholar-Teacher

Professor Hugh Bruck named one of six Distinguished Scholar-Teachers for the 2016-2017 school year.

New Minta Martin Professors Named

Historic honor recognizes full professors who have made significant scholarly contributions.

NRC Funds Development of New Grad-Level Corrosion Courses

Ankem, Christou, and Moderres to create new modules for nuclear, reliability, and sustainability engineering programs.

EERC Conducts 1st Workshop

UM faculty and Petroleum Institute review cooperation success of past year.

Modarres Earns International Research Leadership Award

Award recognizes pioneering research leadership in Probalistic Risk Assessment.

Gift Supplements Reliability Fellowship

$250,000 bequest supports women and minority graduate students, aids Great Expectations campaign.

Clark School’s Center for Reliability Engineering to Run DoD Initiative

The U.S. Department of Defense has selected the Clark School’s Center for Reliability Engineering (CFRE), under contract to Wyle Laboratories, to run the DoD’s Reliability Information Analysis Center (RIAC) in an agreement that will bring some $5 million to the school.

Institute of Electrical and Electronics Engineers (IEEE)

Other professional society fellows

  • American Nuclear Society
  • Asia-Pacific Artificial Intelligence Association (AAIA)