Jacob Bortman

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Jacob Bortman

 https://orcid.org/0000-0002-8910-6738
1984 …2025

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  • 2024

    A Multidisciplinary Framework for Vibration-Based Gear Fault Diagnosis Using Experiments, Modeling, and Machine Learning

    Bachar, L. & Bortman, J., 5 Nov 2024, Proceedings of the Annual Conference of the Prognostics and Health Management Society, PHM. Kulkarni, C. S. & Orchard, M. E. (eds.). 1 ed. Prognostics and Health Management Society, (Proceedings of the Annual Conference of the Prognostics and Health Management Society, PHM; vol. 16, no. 1).

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

    Open Access

  • Bearing Spall Length Estimation Using Tach from Vibration Processing

    Bechhoefer, E., Matania, O. & Bortman, J., 1 Jan 2024, 2024 International Conference on Control, Automation and Diagnosis, ICCAD 2024. Institute of Electrical and Electronics Engineers, (2024 International Conference on Control, Automation and Diagnosis, ICCAD 2024).

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

  • Estimating the Length of a Bearing Spall Using Tach from Vibration

    Bechhoefer, E., Matania, O. & Bortman, J., 1 Jan 2024, Vertical Flight Society 80th Annual Forum and Technology Display. Vertical Flight Society, (Vertical Flight Society 80th Annual Forum and Technology Display).

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

  • Use of Tach from Vibration to Estimate Bearing Spall Length

    Bechhoefer, E., Matania, O. & Bortman, J., 5 Nov 2024, Proceedings of the Annual Conference of the Prognostics and Health Management Society, PHM. Kulkarni, C. S. & Orchard, M. E. (eds.). 1 ed. Prognostics and Health Management Society, (Proceedings of the Annual Conference of the Prognostics and Health Management Society, PHM; vol. 16, no. 1).

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

    Open Access
  • 2023

    A Hypothesis testing approach to Zero-Fault-Shot learning for Damage Component Classification

    Bechhhoefer, E., Matania, O. & Bortman, J., 1 Jan 2023, Proceedings of the Annual Conference of the Prognostics and Health Management Society, PHM. Kulkarni, C. S. & Roychoudhury, I. (eds.). 1 ed. Prognostics and Health Management Society, (Proceedings of the Annual Conference of the Prognostics and Health Management Society, PHM; vol. 15, no. 1).

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

  • 2022

    A realistic dynamic model for helical gear

    Cohen, R., Bachar, L., Klein, R. & Bortman, J., 1 Jan 2022, Proceedings of ISMA 2022 - International Conference on Noise and Vibration Engineering and USD 2022 - International Conference on Uncertainty in Structural Dynamics. Desmet, W., Pluymers, B., Moens, D. & Neeckx, S. (eds.). KU Leuven, Departement Werktuigkunde, p. 2197-2201 5 p. (Proceedings of ISMA 2022 - International Conference on Noise and Vibration Engineering and USD 2022 - International Conference on Uncertainty in Structural Dynamics).

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

  • A strain model for spall severity estimation based on FBG measurements

    Ohana, R., Klein, R., Bortman, J. & Tur, M., 1 Jan 2022, Proceedings of ISMA 2022 - International Conference on Noise and Vibration Engineering and USD 2022 - International Conference on Uncertainty in Structural Dynamics. Desmet, W., Pluymers, B., Moens, D. & Neeckx, S. (eds.). KU Leuven, Departement Werktuigkunde, p. 652-660 9 p. (Proceedings of ISMA 2022 - International Conference on Noise and Vibration Engineering and USD 2022 - International Conference on Uncertainty in Structural Dynamics).

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

  • Estimation of the transfer function in rotating machinery with high instantaneous speed fluctuations

    Matania, O., Klein, R. & Bortman, J., 1 Jan 2022, Proceedings of ISMA 2022 - International Conference on Noise and Vibration Engineering and USD 2022 - International Conference on Uncertainty in Structural Dynamics. Desmet, W., Pluymers, B., Moens, D. & Neeckx, S. (eds.). KU Leuven, Departement Werktuigkunde, p. 732-738 7 p. (Proceedings of ISMA 2022 - International Conference on Noise and Vibration Engineering and USD 2022 - International Conference on Uncertainty in Structural Dynamics).

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

  • Towards Bearings Prognostics Based on Oil Debris

    Portal, O., Madar, E., Klein, R., Bortman, J., Nickell, J. & Kirsch, M., 28 Oct 2022, Proceedings of the Annual Conference of the Prognostics and Health Management Society, PHM. Kulkarni, C. & Saxena, A. (eds.). 1 ed. Prognostics and Health Management Society, (Proceedings of the Annual Conference of the Prognostics and Health Management Society, PHM; vol. 14, no. 1).

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

    Open Access
  • 2017

    Steps toward prognostics of faults in bearings

    Madar, E., Kogan, G., Gazizulin, D., Klein, R. & Bortman, J., 1 Jan 2017, PHM 2017 - Proceedings of the Annual Conference of the Prognostics and Health Management Society 2017. Daigle, M. J. & Bregon, A. (eds.). Prognostics and Health Management Society, p. 236-241 6 p. (Proceedings of the Annual Conference of the Prognostics and Health Management Society, PHM).

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

  • 2016

    Detection of cracks in shafts via analysis of vibrations and orbital paths

    Peretz, R., Rogel, L., Bortman, J. & Klein, R., 1 Jan 2016, PHM 2016 - Proceedings of the Annual Conference of the Prognostics and Health Management Society. Daigle, M. J. & Bregon, A. (eds.). Prognostics and Health Management Society, p. 219-229 11 p. (Proceedings of the Annual Conference of the Prognostics and Health Management Society, PHM; vol. 2016-October).

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

    2 Scopus citations
  • 2015

    Application of feature extraction methods on a CH-53 swashplate bearing

    Battat, M., Bortman, J. & Klein, R., 1 Jan 2015, 22nd International Congress on Sound and Vibration, ICSV 2015. International Institute of Acoustics and Vibrations, (22nd International Congress on Sound and Vibration, ICSV 2015).

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

  • Cyber defense of rotating machinery using an integrated 'fuse' bearing

    Cohen, E., Bortman, J. & Klein, R., 1 Jan 2015, PHM 2015 - Proceedings of the Annual Conference of the Prognostics and Health Management Society 2015. Daigle, M. J. & Bregon, A. (eds.). Prognostics and Health Management Society, p. 532-542 11 p. (Proceedings of the Annual Conference of the Prognostics and Health Management Society, PHM).

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

    2 Scopus citations

  • Towards a physics based prognostic model for bearing - Spall initiation and propagation

    Gazizulin, D., Kogan, G., Klein, R. & Bortman, J., 5 Jun 2015, 2015 IEEE Aerospace Conference, AERO 2015. Institute of Electrical and Electronics Engineers, 7118995. (IEEE Aerospace Conference Proceedings; vol. 2015-June).

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

    7 Scopus citations
  • 2014

    Characterization of fault size in bearings

    Mendelovich, M., Sanders, Y., Kogan, G., Battat, M., Klein, R. & Bortman, J., 1 Jan 2014, PHM 2014 - Proceedings of the Annual Conference of the Prognostics and Health Management Society 2014. Bregon, A. & Daigle, M. J. (eds.). Prognostics and Health Management Society, p. 161-166 6 p. (PHM 2014 - Proceedings of the Annual Conference of the Prognostics and Health Management Society 2014).

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

    3 Scopus citations

  • Gear diagnostics - Fault type characteristics

    Bliznyuk, A., Dadon, I., Klein, R. & Bortman, J., 1 Jan 2014, PHM 2014 - Proceedings of the Annual Conference of the Prognostics and Health Management Society 2014. Bregon, A. & Daigle, M. J. (eds.). Prognostics and Health Management Society, p. 151-160 10 p. (PHM 2014 - Proceedings of the Annual Conference of the Prognostics and Health Management Society 2014).

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

    2 Scopus citations
  • 2013

    Damage tolerance analyses in engineering practice

    Bortman, J., Yosibash, Z. & Alevi, R., 1 Jan 2013, 10th International Conference on Condition Monitoring and Machinery Failure Prevention Technologies 2013, CM 2013 and MFPT 2013. British Institute of Non-Destructive Testing, p. 363-372 10 p. (10th International Conference on Condition Monitoring and Machinery Failure Prevention Technologies 2013, CM 2013 and MFPT 2013; vol. 1).

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

  • Detection of CH-53 swashplate bearing deformation - From a 3D dynamic model to diagnostics

    Battat, M., Kogan, G., Kushnirsky, A., Klein, R. & Bortman, J., 1 Jan 2013, PHM 2013 - Proceedings of the Annual Conference of the Prognostics and Health Management Society 2013. Sankararaman, S. & Roychoudhury, I. (eds.). Prognostics and Health Management Society, p. 540-547 8 p. (PHM 2013 - Proceedings of the Annual Conference of the Prognostics and Health Management Society 2013).

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

    4 Scopus citations

  • THUMS and CBM in the Israeli Air Force - Lessons learned

    Kushnirsky, A., Golan, Y., Haris, E., Nissim, S. & Bortman, J., 1 Jan 2013, 10th International Conference on Condition Monitoring and Machinery Failure Prevention Technologies 2013, CM 2013 and MFPT 2013. British Institute of Non-Destructive Testing, p. 373-386 14 p. (10th International Conference on Condition Monitoring and Machinery Failure Prevention Technologies 2013, CM 2013 and MFPT 2013; vol. 1).

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

  • Towards model based prognostics - Characterization of fault size in bearings

    Kogan, G., Itzhak, I., Shaharabany, S., Bortman, J. & Klein, R., 1 Jan 2013, 10th International Conference on Condition Monitoring and Machinery Failure Prevention Technologies 2013, CM 2013 and MFPT 2013. British Institute of Non-Destructive Testing, p. 350-362 13 p. (10th International Conference on Condition Monitoring and Machinery Failure Prevention Technologies 2013, CM 2013 and MFPT 2013; vol. 1).

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

    2 Scopus citations
  • 2012

    Ball bearing modeling for faults simulation

    Kogan, G., Bortman, J., Kushnirsky, A. & Klein, R., 1 Jan 2012, 9th International Conference on Condition Monitoring and Machinery Failure Prevention Technologies 2012, CM 2012 and MFPT 2012. British Institute of Non-Destructive Testing, p. 745-752 8 p. (9th International Conference on Condition Monitoring and Machinery Failure Prevention Technologies 2012, CM 2012 and MFPT 2012; vol. 2).

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

    5 Scopus citations