Henri Champliaud

Henri Champliaud

École de Technologie Supérieure

H-index: 18

North America-Canada

About Henri Champliaud

Henri Champliaud, With an exceptional h-index of 18 and a recent h-index of 13 (since 2020), a distinguished researcher at École de Technologie Supérieure, specializes in the field of finite element analysis, simulation of manufacturing processes.

His recent articles reflect a diverse array of research interests and contributions to the field:

Effect of Intermediate Path on Post-Wrinkle Initiation of the Multi-Pass Metal Spinning Process: Analysis in the Rotating Reference Frame

Evaluation of the Positioning Accuracy Along Helical Paths Using a Telescoping Ballbar

Influence of the Hot-Top Thermal Regime on the Severity and Extent of Macrosegregation in Large-Size Steel Ingots

Influence of machining parameters on dynamic errors in a hexapod machining cell

Analysis of industrial quenching (air transfer+ oil immersion) and the cooling regimes after immersion

Influence of Hot Top Geometry on the Solidification Time and Macrosegregation in Large-Size Cast Ingot Using Finite Element Modeling

Ballbar applications for machining and non-machining setups in a hexapod-based machining cell

Characterizing and modeling transformation-induced plasticity in 13Cr-4Ni welds upon cooling

Henri Champliaud Information

University

École de Technologie Supérieure

Position

Professor Department of Mechanical Engineering

Citations(all)

1179

Citations(since 2020)

492

Cited By

891

hIndex(all)

18

hIndex(since 2020)

13

i10Index(all)

32

i10Index(since 2020)

19

Email

University Profile Page

École de Technologie Supérieure

Henri Champliaud Skills & Research Interests

finite element analysis

simulation of manufacturing processes

Top articles of Henri Champliaud

Effect of Intermediate Path on Post-Wrinkle Initiation of the Multi-Pass Metal Spinning Process: Analysis in the Rotating Reference Frame

Authors

Huy Hoan Nguyen,Henri Champliaud,Van Ngan Le

Journal

Journal of Manufacturing and Materials Processing

Published Date

2024/1/24

The metal spinning process has been observed in recent major investigations carried out using finite element analysis. One interesting idea has proposed simulating a rotating disc for the simulation of the metal spinning process to reduce computational time. The development of this concept is presented in this paper, including the formal mathematical transformation from the inertial frame to the rotating reference frame, specific FEM configurations with mesh sizes based on a minimized aspect ratio, a mesh convergence study, and the application of a feed rate scale. Furthermore, in the context of the rotating reference frame, the flange geometry after wrinkle initiation is investigated, including the number of peaks and their amplitudes. Using this new approach, it was found that the number of peaks gradually increases from two to eight peaks while their amplitude decreases. In the case of severe wrinkles, the number of peaks stays at four while the amplitude increases dramatically. The intermediate path proves capable of increasing the number of peaks while maintaining a low amplitude. These results will make it possible to design new paths, facilitating the production of defect-free spun parts.

Evaluation of the Positioning Accuracy Along Helical Paths Using a Telescoping Ballbar

Authors

Kanglin Xing,JRR Mayer,Ilian A Bonev,Henri Champliaud,Zhaoheng Liu

Journal

ASME Letters in Dynamic Systems and Control

Published Date

2024/1/1

The telescoping ballbar is a versatile and easy-to-use error identification instrument for machine tools. The ballbar movement trajectory used while machining is limited to acquiring a large circular arc for positioning accuracy evaluation. However, it cannot be used to calculate the expected machine tool error parameters. Herein, a helical path is explored because it provides a complete helix turn under machining conditions, similar to the general ballbar path during a non-machining test, and enables the calculation of relevant machine tool error parameters. The theoretical model and program for a helical ballbar test are developed and validated experimentally on two different research platforms: a hexapod-based machining cell and a Mitsui Seiki HU40-T five-axis machine tool. Using a Renishaw QC-20W ballbar system with a 50 mm radius, the tests were conducted with helical pitches of 0, 0.1, 0.2, 0.5, 1, and 1.5 …

Influence of the Hot-Top Thermal Regime on the Severity and Extent of Macrosegregation in Large-Size Steel Ingots

Authors

Neda Ghodrati,Henri Champliaud,Jean-Benoit Morin,Mohammad Jahazi

Journal

Journal of Manufacturing and Materials Processing

Published Date

2024/4/11

The influence of hot-top designs with different heat capacities on the distribution of positive and negative macrosegregation was investigated on a 12 metric tonne (MT) cast ingot made using Cr-Mo low-alloy steel. The three-dimensional finite element modeling code THERCAST® was used to simulate the thermo-mechanical phenomena associated with the solidification process, running from filling the mold until complete solidification. The model was validated on an industrial-scale ingot and then utilized to evaluate the influence of the thermal history of the hot-top, a crucial component in the cast ingot setup. This assessment aimed to comprehend changes in solidification time, temperature, and heat flux—all of which contribute to the determination of macrosegregation severity. The results showed that preheating the hot-top had a minor effect on solidification time, while modifications of thermal conductivity in the hot-top region increased the solidification time by 31%, thereby significantly affecting the macrosegregation patterns. The results are discussed and interpreted in terms of the fundamental mechanisms governing the kinetics of solidification and macrosegregation phenomena.

Influence of machining parameters on dynamic errors in a hexapod machining cell

Authors

Kanglin Xing,Ilian A Bonev,Zhaoheng Liu,Henri Champliaud

Journal

The International Journal of Advanced Manufacturing Technology

Published Date

2024/2/7

Dynamic errors from the robotic machining process can negatively impact the accuracy of manufactured parts. Currently, effectively reducing dynamic errors in robotic machining remains a challenge due to the incomplete understanding of the relationship between machining parameters and dynamic errors, especially for hexapod machining cells. To address this topic, a dynamic error measurement strategy combining a telescoping ballbar, an unscented Kalman filter (UKF), and particle swarm optimization (PSO) was utilized in robotic machining. The machining parameters, including spindle speed, cutting depth, and feeding speed, were defined using the Taguchi method. Simultaneously, vibrations during machining were also systematically measured to fully comprehend the nature of dynamic errors. Experimental results indicate that dynamic errors in a hexapod machining cell (HMC) are significantly amplified in …

Analysis of industrial quenching (air transfer+ oil immersion) and the cooling regimes after immersion

Authors

Gamaliel Salazar,Jean-Sebastien Lemyre-Baron,Mohammad Jahazi,Henri Champliaud,Antoine Tahan

Published Date

2023/10/17

Standard laboratory test methods are useful to compare the cooling performance and cooling regimes of different quenchants under controlled environments where quenching occurs almost immediately. In reality, many industries rely on systems that require transferring through air from the austenitizing furnace to the quench tank. In this project, a special quench probe apparatus is used to characterize an industrial quenching process involving air transfer followed by quenching in low viscosity oil. The probe system allows investigation of the non-homogeneous condition before immersion. The heterogeneity of the process, through air and in the oil, is captured by modifying the position and orientation of the quench probes among many experiments. Multiple characteristic points were identified during the boiling stage due to its physical significance to produce time dependent analytical curves built up through …

Influence of Hot Top Geometry on the Solidification Time and Macrosegregation in Large-Size Cast Ingot Using Finite Element Modeling

Authors

Neda Ghodrati,Abdelhalim Loucif,Jean-Benoit Morin,Henri Champliaud,Mohammad Jahazi

Published Date

2023/8/21

The effect of the hot top geometry variations on the solidification time and macrosegregation formation during the solidification of a 12MT cast ingot made of a Cr-Mo-low alloy steel was investigated. The bottom pouring ingot casting of a 12 MT cast ingot was simulated by the three-dimensional finite element modeling code THERCAST®. The accuracy of the model was validated by experimental results of the macrosegregation map of a real ingot. The influence of the hot top geometry including an increase and a decrease in hot top height on the solidification parameters was determined. The results showed an increase of 27.5% and a decrease of 5% in the solidification time by an increase of 165mm and a decrease of 200mm in hot top height respectively. The new hot top geometries revealed variations in the range of macrosegregation (comprising the maximum and minimum values of macrosegregation) in …

Ballbar applications for machining and non-machining setups in a hexapod-based machining cell

Authors

Kanglin Xing,Ilian A Bonev,Zhaoheng Liu,Henri Champliaud

Published Date

2023

Ballbar applications for machining and non-machining setups in a hexapod-based machining cell - Espace ÉTS ENGLISH Logo La vitrine de diffusion des publications et contributions des chercheurs de l'ÉTS RECHERCHER Se connecter Accueil Déposer Nouveautés Recherche Repérage À propos Conditions d'utilisation Politique de dépôt Mémoires et thèses Nous joindre Ballbar applications for machining and non-machining setups in a hexapod-based machining cell Xing, Kanglin, Bonev, Ilian A., Liu, Zhaoheng et Champliaud, Henri. 2023. « Ballbar applications for machining and non-machining setups in a hexapod-based machining cell ». Communication lors de la conférence : Canadian Society for Mechanical Engineering International Congress - Computational Fluid Dynamics Canada International Congress CSME - CFD-SC2023 (Sherbrooke, QC, Canada, May 28-31, 2023). Le plein texte de ce …

Characterizing and modeling transformation-induced plasticity in 13Cr-4Ni welds upon cooling

Authors

Jean-Benoit Lévesque,Carlo Baillargeon,Daniel Paquet,Jacques Lanteigne,Henri Champliaud

Journal

Materials

Published Date

2023/11/15

Dilatometric experiments were conducted with the main purpose of measuring the transformation-induced coefficients of 13% chromium and 4% nickel, which are martensitic stainless steel base and filler materials used for hydraulic turbine manufacturing. To this end, a set of experiments was conducted in a quenching dilatometer equipped with loading capabilities. The measurement system was further improved by means of modified pushrods to allow for the use of specimens with geometries that are compliant with tensile test standards. This improvement allowed for the measurement of the materials’ phases and respective yield strengths. The dataset was further used to determine the relationship between the applied external stress and the martensitic start temperature (Ms) upon cooling. The TRIP coefficient’s K values for both the S41500 steel and E410NiMo filler material were measured at 8.12×10−5 and 7.11×10−5, respectively. Additionally, the solid phase transformation model parameters for both the austenitic and martensitic transformation of the filler material were measured. These parameters were then used to model austenitic-phase-transformation kinetics and martensite transformation, including transformation-induced plasticity effects. Good agreement was achieved between the calculation and the experiments.

Influence of deformation path on the stress state and damage evolution along the central axis of a large size forged ingot of AISI H13 steel

Authors

Prashant Dhondapure,Pierre Tize Mha,Soumyaranjan Nayak,Lea Ebacher,Simin Dourandish,Henri Champliaud,Jean-Benoit Morin,Mohammad Jahazi

Journal

Journal of Materials Research and Technology

Published Date

2023/11/1

Development of cracks along the center axis of large high strength steel bars commonly occurs during the forging and leads to excessive part rejections. The present investigation aims to develop a better understanding of the evolution of stress-strain states during the forging operation and in particular the effect of deformation path illustrated by die geometry, on the evolution of damage during the cogging of an AISI H13 steel. Hot compression and tensile tests were performed using Gleeble-3800 thermo-mechanical simulator to develop the optimum material model which was then implemented in the finite element (FE) code Forge NxT 3.2® using a developed user subroutine. Normalized Cockcroft and Latham damage criterion and maximum shear stress (Tresca's) theory of failure were used to predict the damage and failure in the center axis of the shaft through FE analysis with three different die shapes: concave …

Grain size and temperature evolutions during linear friction welding of Ni-base superalloy Waspaloy: Simulations and experimental validations

Authors

Mahshad Javidikia,Morteza Sadeghifar,Henri Champliaud,Mohammad Jahazi

Journal

Journal of Advanced Joining Processes

Published Date

2023/11/1

This research study was aimed at investigating the influence of linear friction welding parameters on grain size alteration and temperature distribution of Ni-base superalloy Waspaloy. A 3D finite element model was developed to predict average grain size and peak temperature as responses. The linear friction welding parameters consisted of oscillation amplitude, oscillation frequency, and applied pressure. Initially, the evolution of the average grain size as a function of the most influential process parameters was subsequently modeled based on the Johnson-Mehl-Avrami-Kolmogorov recrystallization model and were then validated with experimental results. Then, D-optimal design of experiments and analysis of variance were conducted to determine the most influential process parameters that affect the average grain size and peak temperature of the welded joint. Thereafter, response surface method was …

Influence of thermally grown oxides on interfacial friction during hot deformation of large-size forging ingots

Authors

Ali Vedaei-Sabegh,Jean-Benoît Morin,Henri Champliaud,Mohammad Jahazi

Journal

journal of materials research and technology

Published Date

2022/11/1

High-strength steels are pre-heated in gas-fired furnaces before undergoing the open-die forging process. This process increases thermal oxidation on steel surfaces, affecting the interfacial friction between ingot and anvils during deformation. Two medium carbon high-strength steels with different nickel contents were oxidized, and the mechanical characteristics of oxide layers were investigated by micro and nano-indentation methods. It was found that the formed layers on high nickel steel had lower Young modulus and hardness compared to the steel with lower nickel. Finite element modeling and ring tests were used to assess oxide layers' effect on interfacial friction during deformation. The results demonstrated that oxide layers' formation decreased the interfacial friction and deformation load, acting as lubricants at high temperatures.

Parameterized finite element modeling and experimental modal testing for vibration analysis of an industrial hexapod for machining

Authors

Minh-Nha Pham,Henri Champliaud,Zhaoheng Liu,Ilian A Bonev

Journal

Mechanism and Machine Theory

Published Date

2022/1/1

There are hundreds of parallel robot designs, of these, some are suitable for fast material transfer operations, others for precision positioning, or like Fanuc's hexapod, for withstanding heavy payloads. Unfortunately, few machining applications using hexapods exist today in the industry due to the complexity and scarcity of practical studies on the kinematic and dynamic properties of these robots. In this paper, kinematic and parameterized finite element models of Fanuc's F-200iB hexapod for robotic machining are presented. First, the complete inverse kinematic analysis of the hexapod is introduced. Using key points’ locations from the inverse kinematics, a parametrized geometrical model of the hexapod is developed. Then, the finite element model of the robot is created by assembling all the members with their geometry, mass distribution, material characteristics, and by applying rigorous boundary and joint …

Microstructure-based finite element modeling of a martensitic stainless steel during hot forging

Authors

Simin Dourandish,Henri Champliaud,Jean-Benoit Morin,Mohammad Jahazi

Journal

The International Journal of Advanced Manufacturing Technology

Published Date

2022/12

This study aims to analyze material flow behavior and microstructure evolution during the hot deformation of a martensitic stainless steel with the view to simulating the open die forging process. For this purpose, hot compression tests were conducted using a Gleeble-3800 thermo-mechanical. A material model, based on the Arrhenius equation, was developed and implemented into the finite element simulation code Forge NxT 3.0® using a special user subroutine. Microstructure maps for the entire volume of the specimen were determined, and the occurrences of different softening phenomena were predicted as a function of hot deformation parameters. Good correlations were obtained between the simulation predictions and experimental results. The flow behavior of the material was also analyzed using the dynamic material model, and the unstable regions were identified. The obtained results were compared …

Micromechanical properties of low-carbon martensitic stainless steel by microtensile experiments

Authors

P-A Deschênes,Robert Wheeler,Daniel Paquet,Jacques Lanteigne,AM Serventi,Laurent Tôn-Thât,Henri Champliaud

Journal

Materials Science and Engineering: A

Published Date

2022/11/14

This paper presents a detailed experimental approach to extract the critical resolved shear stress (CRSS) and the saturation stress of the elementary constituents of the microstructure of quenched S41500 martensitic stainless steel by conducting various microscopy observations and microtensile testing. To the authors' knowledge, the direct extraction of micromechanical properties of a single martensite variant by tensile testing has never been performed. However, the literature does propose studies that measured the mechanical properties of the bulk or small volumes containing a few variants. In this work, a particular attention is dedicated to the preparation of the specimens from the macro to the microscale, where final machining of test specimens was made using a Gallium Focused Ion Beam (Ga-FIB). In the present work, the CRSSs of {110}, {211} and {123} plane-related slip systems were directly measured …

New correlations for heat transfer in parallel-plate ducts at low Peclet number

Authors

PY Paradis,H Champliaud

Journal

International Journal of Heat and Mass Transfer

Published Date

2021/10/1

Calculations of heat transfer in duct flows generally neglect the effect of axial heat conduction within the fluid. However, in some situations, this effect must be taken into account. The decision on whether or not to consider this phenomenon is driven by the value of the Peclet number. A low value, with 100 commonly considered the threshold, indicates that axial conduction, i.e., conduction parallel to the flow, should be accounted for in the calculations. Microfluidic devices, systems using liquid metal coolant or microchannel heat exchangers are some examples of applications where low Peclet flow conditions may be encountered. While exact analytical solutions exist for such cases, they are often impractical to use for common engineering design purposes due to their mathematical complexity. The present work proposes three new correlations for the estimation of the fully developed Nusselt number, thermal entry …

Microstructure-based FEM modeling of phase transformation during quenching of large-size steel forgings

Authors

Yassine Bouissa,Muftah Zorgani,Davood Shahriari,Henri Champliaud,Jean-Benoit Morin,Mohammad Jahazi

Journal

Metallurgical and Materials Transactions A

Published Date

2021/5

The current investigation encompasses the development of a microstructure-based 3D finite element model (FEM) of water quenching process of large-size, high-strength steel forgings with accurate predictions of the volume fraction of phases. The approach is based on modified TTT/CCT curves that consider a lower martensite start temperature value. An experimental procedure consisting in the validation of the FEM simulations was conducted using high-resolution dilatometry, optical and scanning electron microscopy, and instrumentation of a large-size steel block with several thermocouples at different locations. Results showed a very good agreement between the temperature predictions of the 3D FEM model and those obtained from direct measurement of instrumented forged block with an average error of about 1 pct in the quarter region. The volume fraction of phases and hardness distribution …

A nonlinear finite-element analysis tool to prevent rupture of power transformer tank

Authors

Samuel Brodeur,Van Ngan Lê,Henri Champliaud

Journal

Sustainability

Published Date

2021/1/20

High-energy internal failures of transformers are catastrophic events which are hardly predictable. For this reason, a full-scale controlled experiment represents a valuable learning opportunity to gather accurate information about sequence of events during the very short time in which the failure occurs. Controlled parameters include tank design, material properties, experimental load and measurements. In this paper, we present a detailed investigation using nonlinear finite-element analysis of a 210-MVA transformer high-pressure experiment. We begin by evaluating the relationship between internal arcing pressure rise and tank expansion characteristics. Since this relationship is not linear due to geometric and material nonlinearities, an iterative process is proposed to ensure result accuracy. Stress–strain material properties are retrieved by tension experiments of specimens extracted from the tested tank to enable accurate comparison of numerical and experimental results. It is shown in this paper that nonlinear material parameters have a small influence on the tank pressure rise, but a significant one on large strain prediction and therefore the true stress-strain curve is recommended. In addition, the ductile rupture criterion based on the ultimate plastic strain of the material correlates with the experimental and explicit dynamic analysis results. This can ensure a certain design margin for tank rupture prevention.

FEM modeling and experimental validation of quench-induced distortions of large size steel forgings

Authors

Y Bouissa,N Bohlooli,D Shahriari,H Champliaud,JB Morin,M Jahazi

Journal

Journal of Manufacturing Processes

Published Date

2020/10/1

Industrial-level water quenching operations generally lead to high residual stresses and distortion, especially for large steel parts, due to the high temperature gradient present. In this work, a 3D Finite Element (FE) model was used to simulate the water quenching process of a large size forged block made of high-strength steel in a bid to predict the induced distortion and residual stresses. The FE model considers the coupling between the thermal, mechanical and metallurgical fields and in addition to that the mechanical properties related to each phase at different temperatures were experimentally generated to feed the FE model with reliable material data. Furthermore, an experimental approach was designed to accurately measure the shape change after quenching. The results indicated that the FE model was able to predict the pattern of the distortion induced by the quench process. Also, the value of the …

Modeling solid-state phase transformations of 13Cr-4Ni steels in welding heat-affected zone

Authors

JB Lévesque,J Lanteigne,H Champliaud,D Paquet

Journal

Metallurgical and Materials Transactions A

Published Date

2020/3

Fatigue damage is commonly encountered by operators of Francis type hydraulic turbine runners made of 13Cr-4Ni soft martensitic stainless steel. These large and complex welded casting assemblies are subjected to fatigue crack initiation and growth in the vicinity of their welded regions. It is well known that fatigue behavior is influenced by residual stresses and the microstructure. By including solid-state phase transformation models in welding simulations, phase distribution can be evaluated along with their respective volumetric change and their effect on residual stresses. Thus, it enables the assessment of welding process on fatigue crack behavior by numerical methods. This paper focuses on modeling solid-state phase transformations of 13Cr-4Ni soft martensitic stainless steel, used for manufacturing hydraulic turbine runners, occurring upon welding. It proposes to determine the material parameters …

Through-thickness residual stresses, microstructure, and mechanical properties of electron beam-welded CA6NM martensitic stainless steel after postweld heat treatment

Authors

Sheida Sarafan,Priti Wanjara,Jean-Benoit Levesque,Javad Gholipour,Henri Champliaud,Louis Mathieu

Journal

Advances in Materials Science and Engineering

Published Date

2020/2/12

In this study, the integrity of electron beam- (EB-) welded CA6NM—a grade of 13% Cr-4% Ni martensitic stainless steel—was assessed through the entire joint thickness of 90 mm after postweld heat treatment (PWHT). The joints were characterized by examining the microstructure, residual stresses, global mechanical properties (static tensile, Charpy impact, and bend), and local properties (yield strength and strain at fracture) in the metallurgically modified regions of the EB welds. The applied PWHT tempered the “fresh” martensite present in the microstructure after welding, which reduced sufficiently the hardness (<280 HV) and residual stresses (<100 MPa) to meet the requirements for hydroelectric turbine assemblies. Also, the properties of the EB joints after PWHT passed the minimum acceptance criteria specified in ASME sections VIII and IX. Specifically, measurement of the global tensile properties indicated that the tensile strengths of the EB welds in the transverse and longitudinal directions were on the same order as that of the base metal (BM). Evaluation of the local tensile properties using a digital image correlation (DIC) methodology showed higher local yield strengths in the fusion zone (FZ) and heat-affected zone (HAZ) of 727 MPa and 740 MPa, respectively, relative to the BM value of 663 MPa. Also, the average impact energies for the FZ and HAZ were 63 J and 148 J, respectively, and attributed to the different failure mechanisms in the HAZ (dimples) versus the FZ (quasi-cleavage consisting of facets and dimples). This study shows that the application of PWHT plays an important role in improving the weld quality and performance …

See List of Professors in Henri Champliaud University(École de Technologie Supérieure)

Henri Champliaud FAQs

What is Henri Champliaud's h-index at École de Technologie Supérieure?

The h-index of Henri Champliaud has been 13 since 2020 and 18 in total.

What are Henri Champliaud's top articles?

The articles with the titles of

Effect of Intermediate Path on Post-Wrinkle Initiation of the Multi-Pass Metal Spinning Process: Analysis in the Rotating Reference Frame

Evaluation of the Positioning Accuracy Along Helical Paths Using a Telescoping Ballbar

Influence of the Hot-Top Thermal Regime on the Severity and Extent of Macrosegregation in Large-Size Steel Ingots

Influence of machining parameters on dynamic errors in a hexapod machining cell

Analysis of industrial quenching (air transfer+ oil immersion) and the cooling regimes after immersion

Influence of Hot Top Geometry on the Solidification Time and Macrosegregation in Large-Size Cast Ingot Using Finite Element Modeling

Ballbar applications for machining and non-machining setups in a hexapod-based machining cell

Characterizing and modeling transformation-induced plasticity in 13Cr-4Ni welds upon cooling

...

are the top articles of Henri Champliaud at École de Technologie Supérieure.

What are Henri Champliaud's research interests?

The research interests of Henri Champliaud are: finite element analysis, simulation of manufacturing processes

What is Henri Champliaud's total number of citations?

Henri Champliaud has 1,179 citations in total.

What are the co-authors of Henri Champliaud?

The co-authors of Henri Champliaud are Zhengkun Feng.

    Co-Authors

    H-index: 11
    Zhengkun Feng

    Zhengkun Feng

    École de Technologie Supérieure

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