Alix de Pannemaecker

Alix de Pannemaecker, Ph.D., P.Eng

Senior Associate
Mechanical Engineering
Denver

Dr. de Pannemaecker specializes in tribology, mostly focusing on metal contacts under sinusoidal or random vibrations generating fatigue, fretting and wear damage. She is an expert at building bridges between numerical simulations by developing codes using analytical equations or finite element method (FEM), and experimental investigations whether it is in laboratory or in the field. Graduate of a PhD in Mechanical Engineering and Materials Sciences she obtained in France, and then Certified as a Licenced Professional Engineer (P.Eng) in Canada, she was involved in various fields such as aeronautics, nuclear and robotics before immigrating to the United States.

Passionate about aeronautics, during her PhD, Dr. de Pannemaecker developed a new method to predict failure risk on metals for aircraft structures. It is a fast and economical way to characterize the crack growth under fretting, fatigue and fretting fatigue loadings, coupling mechanical tests and finite element/Python-Matlab modeling. She namely demonstrated that there is a correlation between fatigue and fretting damage mechanisms, therefore fatigue mechanical properties can directly be extracted from fretting ones. Proposing fretting tests as an alternative to fatigue ones is very efficient in terms of costs, as it requires far less material and time. Able to work with different scales, she focused throughout her PhD on the development of a new small-scale fretting fatigue setup. This latter setup is adaptable on the synchrotron and enabled for the first time in-situ fretting fatigue crack growth analysis using X-ray.

Expanding her skills, her previous postdoctoral project at the National Research Council Canada (NRCC) had nuclear applications focusing on abrasive wear. Including thermal effects using the FEM, she carried out a fretting wear model which was experimentally validated at room and high temperature. To do so, she entirely developed an impact/sliding test bench from the mechanical design to the instrumentation integration. During her stay at NRCC, Dr. de Pannemaecker also developed a new experimental fretting device enabling random excitations which was never done in the past. A new experimental protocol was proposed as well as it is the first time ever that random vibrations are used to reproduce fretting in laboratory. This is a breakthrough for the research community as using random excitations is the best way to replicate reality.

Prior to joining Exponent, Dr. de Pannemaecker acted as a Reliability Engineer for an American owned private start-up company. Supporting all aspects of the test life cycle involving planning, execution and analysis, she was strongly involved in metal/plastic gearbox technologies developments for the robotics industrial sector. Focusing on one plastic gearbox prototype, she helped developing a full reliability program involving step-stress investigations and Highly Accelerated Life Tests (HALT). Very forthcoming and eager to share, she performed lectures on her research interests in laboratories where fretting and fatigue were not specialties as in the Rush University Medical Center, Department of Orthopedics, Chicago IL USA; Mines CDM, Paris France; Physics department at Polytechnique Montréal, Montreal Canada; and presented her research work at international conferences in England, China, Brazil or North America.

CREDENTIALS & PROFESSIONAL HONORS

  • Ph.D., Material Sciences and Engineering, Ecole Centrale de Lyon (France), 2015
  • M.S., Engineering, Institut Polytechnique de Grenoble (French), 2011
  • B.S., Engineering, Institut Polytechnique de Grenoble (French), 2009
  • Awards and Honors

    2019: Peter J. Blau Best Poster Award at the International Conference on Wear of Materials (WOM 2019)

    2016-2018: MITACS Scholarship for the NRCC/AREVA Project

    2017: Peter J. Blau Best Poster Award at the International Conference on Wear of Materials (WOM 2017)

    2015: Best Poster Award at the International Conference Of Metallurgists (COM 2015)

    2015: MACE3 Award (MACE3 is the industrial research chair on advanced modelling of electrolytic cells and energy Efficiency, Canada)

    2014: Programme Avenir Lyon Saint Etienne Scholarship and Explora’doc Scholarship

LICENSES & CERTIFICATIONS

Licensed Professional Engineer, Quebec (Canada), #5084987

Licensed Professional Engineer, British Columbia (Canada), #49206

LANGUAGES

  • French

Publications

de Pannemaecker A, Attia H, Williams G. A novel acceleration controlled random vibration fretting test methodology: From classical sine to Gaussian random processes. Wear 2019; 203050:438-439.

de Pannemaecker A, Fouvry S, Buffiere J-Y, Brochu, M. Modelling the fretting fatigue crack growth: From short crack correction strategies to microstructural approaches. International Journal of Fatigue 2018; 117:75-89.

de Pannemaecker A, Fouvry S, Berthel B, Buffiere J-Y. Numerical methods for stress intensity factor ΔK calculations of fretting cracked interface. Tribology International 2018; 119:389-403.

de Pannemaecker A, Buffiere J-Y, Fouvry S, Graton O. In situ fretting fatigue crack propagation analysis using synchrotron X-ray radiography. International Journal of Fatigue 2017; 97:56-69.

de Pannemaecker A, Fouvry S, Brochu M, Buffiere J-Y. Identification of the fatigue stress intensity factor threshold for different load ratios R: From fretting fatigue to C (T) fatigue experiments. International Journal of Fatigue 2016; 82:211-225.

de Pannemaecker A, Fouvry S, Buffiere J-Y. Reverse identification of short–long crack threshold fatigue stress intensity factors from plain fretting crack arrest analysis. Engineering Fracture Mechanics 2015; 134:267-285.

de Pannemaecker A, Fouvry S, Buffiere J-Y. Introduction of a reverse simulation approach to identify the fatigue stress intensity factor crack arrest threshold from fretting cracking experiments. Tribology International 2014; 76:122-132.

Presentations

de Pannemaecker A, Attia H, Williams G. A novel acceleration controlled random vibration fretting test methodology: From classical sine to Gaussian random processes. Technical presentation, at 22nd International Conference on Wear of Materials, Miami, FL, 2019.

de Pannemaecker A, Fouvry S, Berthel B, Buffiere J-Y. Numerical methods for stress intensity factor ΔK calculations of fretting cracked interface. Technical presentation, 21st International Conference on Wear of Materials, Long Beach, CA, 2017.

de Pannemaecker A. The influence of load ratio during fretting, fretting fatigue and fatigue: Study of crack growth arrest through multiscale coupling. Lecture, Rush University Medical Center, Department of Orthopedics, Chicago, IL, 2017.

de Pannemaecker A. Crack nucleation and propagation: From Fretting to Fatigue crack analysis. Lecture, Ecole Polytechnique de Montréal, Physics Department, Montreal, QC, Canada, 2016.

de Pannemaecker A, Buffiere J-Y, Fouvry S, Graton O. In situ fretting fatigue crack propagation using Synchrotron X-ray radiography. Technical presentation, International Symposium of Fretting Fatigue 8, ISFF8, Brasilia, Brazil, 2016.

de Pannemaecker A, Fouvry S, Brochu M, Buffiere J-Y. Identification du facteur d’intensité seuil pour différents rapports de charge R : du fretting fatigue aux essais fatigue C(T). Poster presentation, La Journée des Etudiants du Regal, Chicoutimi, Canada, 2015.

de Pannemaecker A, Fouvry S, Brochu M, Buffiere J-Y. Identification of the fatigue stress intensity factor threshold for different load ratios R: From fretting fatigue to C(T) fatigue experiments. Poster presentation, Conference Of Metallurgists, Toronto, Canada, 2015.

de Pannemaecker A. Approche multi-échelle des processus de fissuration sous sollicitations complexes de Fretting Fatigue. Lecture, Centre Des Matériaux (CDM) des Mines ParisTech, Evry, France, 2014.

de Pannemaecker A, Fouvry S, Brochu M, Buffiere J-Y. Identification of the fatigue stress intensity factor threshold for different load ratios R: From fretting fatigue to C(T) fatigue experiments. Technical presentation, International Conference on Fatigue Damage of Structural Materials X, Hyannis, MA, 2014.

de Pannemaecker A, Fouvry S, Buffiere J-Y. Introduction of a reverse simulation approach to identify the fatigue SIF crack arrest threshold from fretting cracking experiments. Technical presentation, 13th International Conference on Fracture, Beijing, China, 2013.

de Pannemaecker A, Fouvry S, Buffiere J-Y. Introduction of a reverse simulation approach to identify the fatigue SIF crack arrest threshold from fretting cracking experiments. Technical presentation, 7th International Symposium on Fretting Fatigue, Oxford, UK, 2013.

Prior Experience

Reliability Engineer (independent contractor), Genesis Robotics (Canada), 2019

Mechanical Test Engineer, Genesis Robotics (Canada), 2018-2019

Postdoctoral Research Associate, National Research Council Canada & McGill University (Canada), 2016-2018

Postdoctoral Research Associate, Ecole Polytechnique de Montréal (Canada), 2015

Project Manager, Groupe PSA (France), 2011-2012

Mechanical Engineer, MCA Ingénierie (France), 2011

Academic Appointments

Lecturer, Département Premier Cycle, INSA Lyon (France), 2013

Professional Affiliations

Ordre des ingénieurs du Québec (OIQ)

Engineers and Geoscientists BC (EGBC)

Additional Information

Peer Reviewer

International Journal of Fatigue

Tribology International

Corrosion Science

CREDENTIALS & PROFESSIONAL HONORS

  • Ph.D., Material Sciences and Engineering, Ecole Centrale de Lyon (France), 2015
  • M.S., Engineering, Institut Polytechnique de Grenoble (French), 2011
  • B.S., Engineering, Institut Polytechnique de Grenoble (French), 2009
  • Awards and Honors

    2019: Peter J. Blau Best Poster Award at the International Conference on Wear of Materials (WOM 2019)

    2016-2018: MITACS Scholarship for the NRCC/AREVA Project

    2017: Peter J. Blau Best Poster Award at the International Conference on Wear of Materials (WOM 2017)

    2015: Best Poster Award at the International Conference Of Metallurgists (COM 2015)

    2015: MACE3 Award (MACE3 is the industrial research chair on advanced modelling of electrolytic cells and energy Efficiency, Canada)

    2014: Programme Avenir Lyon Saint Etienne Scholarship and Explora’doc Scholarship

LICENSES & CERTIFICATIONS

Licensed Professional Engineer, Quebec (Canada), #5084987

Licensed Professional Engineer, British Columbia (Canada), #49206

LANGUAGES

  • French