Explanipedia

Evaluation of mechanical properties of Ni/BaTiO<sub>3</sub> functionally graded material Open

Baraa Saidani, Jihed Zghal, Isabelle Bruant, Damien Brégiroux, Johann Petit , et al. · 2024

A Ni-BaTiO 3 functionally graded material (FGM) was elaborated from 5 separate layers, ranging from 0 to 100 wt.% Ni content, by Spark Plasma Sintering (SPS) method. To estimate the variation of mechanical properties in the FGM thickness, …

Characterization of fatigue behavior of AA2024‐T351 aluminum alloy Open

Aymen Khadimallah, Johann Petit, Naila Hfaiedh, Amna Znaidi · 2023

The paper aims to investigate the fatigue behavior of the widely used AA2024‐T351 aluminum alloy in the aircraft industry. An experimental program was conducted to study the fatigue life and damage behavior under symmetrical tensile‐compre…

Agir sur le travail des managers : des enjeux de métier pour les ergonomes, pour les managers Open

Johann Petit, Philippe Negroni · 2023

Le travail des managers et les questions de management constituent aujourd’hui une préoccupation importante pour les praticiens et les chercheurs en ergonomie. Dans ce papier, nous énonçons un positionnement concernant les évolutions socié…

Analyse d’ouvrage par Johann Petit Open

Johann Petit · 2023

Comprendre ce qu’est l’activité humaine et ce qu’elle représente dans le travail n’est jamais chose aisée. Et pour cause. Phénomène complexe, l’activité est d’abord multidimensionnelle, elle se développe sur les plans physiologique, cognit…

In-Situ Thermography Investigation of Crack Growth in Armco Iron under Gigacycle Fatigue Loading Open

Victor Postel, Johann Petit, Chong Wang, Kai Tan, Isabelle Ranc-Darbord , et al. · 2022

A non-destructive thermographic methodology based on the temperature field is utilized to determine the crack tip position during the very high cycle fatigue (VHCF) test of pure iron and deduce the corresponding fatigue crack growth rate (…

Optimisation of an ultrasonic torsion fatigue system for high strength materials Open

Johann Petit, Ze Zhong Jiang, O. Polit, Thierry Palin‐Luc · 2021

Analyse d’ouvrage par Johann Petit Open

Johann Petit · 2021

Les publications scientifiques sur le management – articles, communications, ouvrages – sont florissantes depuis de nombreuses années, notamment dans les champs de la sociologie et des sciences de gestion. Elles commencent à le devenir dan…

“Intervenir sur l’organisation. Concevoir des dispositifs de régulation pour un travail plus démocratique” [Résumé] Open

Johann Petit · 2021

Visant des rapprochements entre ergonomie, sociologie et sciences de gestion, ce mémoire d’HDR, qui s’appuie sur une pratique d’interventions en entreprise, s’intéresse aux modalités d’intervention sur l’organisation à travers le travail d…

Experimental Determination of Entropy and Exergy in Low Cycle Fatigue Open

Patrick Ribeiro, Johann Petit, L. Gallimard · 2019

Recent works in mechanical fatigue consider that a threshold of entropy exists, the fracture fatigue entropy. The determination of this quantity is usually done considering empirical models for the mechanical power estimation. In this pape…

Thermal response of iron and C-Mn steels with different ferrite/pearlite phase fraction under ultrasonic fatigue loading Open

Xiaoxue Pu, Johann Petit, Isabelle Darbord‐Ranc, Danièle Wagner · 2019

Comment contribuer au développement des pratiques des représentants du personnel dans les CHSCT : le cas d’une recherche‑intervention à la SNCF Open

Yann Poley, Johann Petit · 2019

Cet article présente les principales conclusions d’une thèse en ergonomie portant sur le travail des représentants du personnel dans plusieurs CHSCT de la SNCF. Ces éléments sont de nature à éclairer certains déterminants d’une activité qu…

313 The involvement of the employees in the project management: a key issue for efficiency and health at work Open

Bernard Dugué, Johann Petit · 2018

Introduction The design of working places fitting for all the employees is a major issue for the prevention of health and safety. It is a double challenge: because of the target, the result of the design, but also regarding the methods of …

314 Subsidiarity as a target for healthy organisations Open

Johann Petit, Bernard Dugué · 2018

Introduction Corporate governance, through the involvement of employees and the dynamics that it can produce, is an essential issue for efficiency and for safeguarding workers' health. Many studies have shown that individual autonomy is a …

Accuracy of stress measurement by Laue microdiffraction (Laue-DIC method): the influence of image noise, calibration errors and spot number Open

F. G. Zhang, Michel Bornert, Johann Petit, O. Castelnau · 2017

Laue microdiffraction, available at several synchrotron radiation facilities, is well suited for measuring the intragranular stress field in deformed materials thanks to the achievable submicrometer beam size. The traditional method for ex…

Direct measurement of local constitutive relations, at the micrometre scale, in bulk metallic alloys Open

Emeric Plancher, V. Favier, Claire Maurice, Elodie Bosso, N. Rupin , et al. · 2017

Multiscale models involving crystal plasticity are essential to predict the elastoplastic behavior of structural materials with respect to their microstructure. However, those models are often limited by a poor knowledge of the local const…

Les conditions d’une activité collective entre les acteurs de la prévention des risques professionnels : enjeux de pluridisciplinarité Open

Sandrine Caroly, Marie Bellemare, Aurélie Landry, Fabien Coutarel, Philippe Davezies , et al. · 2016

L’enjeu de la recherche PLURIPREV est de décrire l’organisation effective de la pluridisciplinarité dans les services de santé au travail (SST), plus particulièrement dans les SST inter-entreprises (SSTi), et les formes de travail collecti…

On the Accuracy of Elastic Strain Field Measurements by Laue Microdiffraction and High-Resolution EBSD: a Cross-Validation Experiment Open

Emeric Plancher, Johann Petit, Claire Maurice, V. Favier, Lucie Saintoyant , et al. · 2015

Steady state signatures in the time domain for nonintrusive appliance identification Open

Yulieth Jimenez, César Duarte, Johann Petit, Jan Meyer, Peter Schegner , et al. · 2015

Smart Grid paradigm promotes advanced load monitoring applications to support demand side management and energy savings. Recently, considerable attention has been paid to Non-Intrusive Load Monitoring to estim…

Determination of deviatoric elastic strain and lattice orientation by applying digital image correlation to Laue microdiffraction images: the enhanced Laue-DIC method Open

F. G. Zhang, O. Castelnau, Michel Bornert, Johann Petit, Jean-Baptiste Marijon , et al. · 2015

A new method of determining the deviatoric elastic strain and lattice orientation from Laue microdiffraction images is presented. Standard data treatment methods can suffer from the difficulty of precisely pinpointing the positions of diff…

Modélisation et optimisation du comportement mécanique vibratoire d'une machine de fatigue de torsion Open

Zhaoyi Jiang, O. Polit, Johann Petit · 2015

Colloque avec actes et comité de lecture. Internationale.

Laue-DIC: a new method for improved stress field measurements at the micrometer scale Open

Johann Petit, O. Castelnau, Michel Bornert, F. G. Zhang, Felix Hofmann , et al. · 2015

A better understanding of the effective mechanical behavior of polycrystalline materials requires an accurate knowledge of the behavior at a scale smaller than the grain size. The X-ray Laue microdiffraction technique available at beamline…

Les enjeux organisationnels de la reprise du travail de salariés après une longue absence Open

Célia Quériaud, Bernard Dugué, Johann Petit · 2015

This study is based on an ergonomic intervention conducted at the request of a bank due to difficulties encountered by employees who were returning to work after a long-term absence. Though many studies have been conducted about return-to-…

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