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Pierre Arnaud

Pierre Arnaud

Researcher Scientist

Center · CMAT

Team

MEM - Mécanique Expérimentale et Matériaux

Biography

Arnaud Pierre is a researcher specializing in the study of friction, wear, and fatigue in materials subjected to tribological stresses. His work focuses on analyzing the mechanisms of degradation at contacting interfaces—particularly under fretting conditions—and their impact on the durability of industrial structures. His research covers a variety of materials, including stainless steels, titanium alloys, metallic composites, and nitrided coatings, with a particular focus on environmental effects (hydrogen pressure, oxygenation) and stress gradients. Arnaud Pierre has developed innovative experimental and numerical approaches, combining finite element modeling, multiphysics simulations (fluid-structure interactions), and inverse methods to quantify wear rates and predict crack nucleation. His contributions also include the study of third-body layers, the influence of wear debris on friction mechanisms, and the development of analytical models to optimize the design of contacts subjected to cyclic loading.

Publication(s)

Teaching

General Engineering Professions (MIG)

Lecturer

A MIG is a personalized, project-based learning program that brings together a group of 12 or 14 students, guided by the School’s faculty members, to explore a complex problem in all its main dimensions—including, of course, scientific and technical aspects, but also cross-disciplinary aspects (socioeconomics, management, law, the environment, etc., depending on the field being studied). Ten different topics are offered. They all reflect current research themes being developed by the School’s centers and industry. The challenges students will tackle through these 10 projects address major issues facing the industry of the future and society: From Energy Resource Transformation to Management, Data Science and Innovative Applications, Raw Material Extraction and Environmental Impact, Design and Materials for Aerospace and Automotive, and Medical and Hospital Care Engineering Each MIG topic is addressed through complementary and interlinked activities during an intensive three-week period: - company visits, lectures, and classes - a period of experimentation and/or modeling at a research center or in a company, in the form of mini-projects carried out in small groups. In addition, each group of students collectively summarizes the work completed in the form of a written report and an oral presentation before a panel of industry professionals. This presentation will allow you to better understand all aspects of the topic and to deepen your teamwork skills.

Experimental Mechanics

Guest Lecturer

The course has two main objectives. Drawing on examples from industry, the course first aims to help students understand the challenges involved in a mechanical testing campaign and to equip them with the tools needed to design experimental plans for the mechanical characterization of materials. With this in mind, the course will begin with a description of standardized tests to highlight their limitations, followed by a presentation of original or “non-standard” tests that are as well-instrumented as possible. To this end, part of the course will be devoted to the study of non-contact thermomechanical measurement techniques (infrared thermography and digital image correlation). In a second phase, the focus will be on establishing the link between continuum mechanics, thermomechanical behavior equations, and experimental characterization. The concepts of stress and strain analysis will be reviewed to understand the methods for optimizing behavior and damage mechanisms, which we aim to identify through the tests. The in-person component (29 hours) is structured into plenary sessions (12 hours), mini-projects (in pairs or groups of three) (15 hours), and project presentations before a panel (30 minutes). Students’ independent work (6 hours) includes: Understanding the mini-project, literature review, scientific analysis and interpretation of the results obtained, writing a summary, and preparing an oral presentation

PhD supervision

  • 2025 Characterization and modeling of the damage to wound rotors under thermomechanical stress: wear and damage to insulators ROSSI Maminirina Alyssa Cynthia
  • 2025 Development of a predictive wear model for fretting issues in nuclear fuel assemblies MOREIRA LEVY Marjory
  • 2025 Cyclic modeling of thermomechanical fatigue propagation for austenitic stainless steels VANNIER Martin
  • 2025 Experimental study and modeling of wear and friction of metallic alloys (TA6V, 316L) under hydrogen RENOU Hana
  • 2024 Modeling of crack initiation and propagation induced by fretting fatigue loading FOURCIN Morgan
  • 2023 Experimental study and modeling of tribological phenomena (wear and friction) under H2 gas FARTAS Mohammed
  • 2022 Sustainability and life cycle of the electric machine, at the heart of the challenges of a low-carbon transition SAHAOUI Mohamed
  • 2022 Cracking under anisothermal and non-proportional loading in generalized plasticity LE GOFF Camille
  • 2022 Study of fretting fatigue corrosion behavior of steel and aluminum strands in overhead power transmission conductors MEDRALA Clément