Pascal Laheurte
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View article: Experimental and numerical investigations of cutting forces and chip formation during micro-cutting of Ti42Nb titanium alloy produced by laser-based powder bed fusion
Experimental and numerical investigations of cutting forces and chip formation during micro-cutting of Ti42Nb titanium alloy produced by laser-based powder bed fusion Open
Ti-Nb alloys are high-profile candidates for the biomedical applications. However, because of poor surface integrity (i.e. residual stress and surface roughness), Ti-Nb implantable medical devices need to be machined in order to obtain fun…
View article: Secondary Hardening of a High-N Ni-Free Stainless Steel
Secondary Hardening of a High-N Ni-Free Stainless Steel Open
High-N Ni-free stainless steels are used for their excellent mechanical properties combined with their high corrosion resistance, especially for biomedical applications. Even though it is well-known that secondary hardening during annealin…
View article: Additive manufacturing and energy-harvesting performance of honeycomb-structured magnetostrictive Fe52–Co48 alloys
Additive manufacturing and energy-harvesting performance of honeycomb-structured magnetostrictive Fe52–Co48 alloys Open
International audience
View article: Super-elasticity in vitro assessment of CuNiTi wires according to their Austenite finish temperature and the imposed displacement
Super-elasticity in vitro assessment of CuNiTi wires according to their Austenite finish temperature and the imposed displacement Open
Objectives To assess the super-elasticity of CuNiTi wires (Ormco, Glendora, Calif) according to their Austenite finish temperature (Af) and to the imposed displacement. The secondary objective was to compare the wire dimensions with the st…
View article: Impact of the Loading Conditions and the Building Directions on the Mechanical Behavior of Biomedical β-Titanium Alloy Produced In Situ by Laser-Based Powder Bed Fusion
Impact of the Loading Conditions and the Building Directions on the Mechanical Behavior of Biomedical β-Titanium Alloy Produced In Situ by Laser-Based Powder Bed Fusion Open
In order to simulate micromachining of Ti-Nb medical devices produced in situ by selective laser melting, it is necessary to use constitutive models that allow one to reproduce accurately the material behavior under extreme loading conditi…
View article: Post-processing of additive manufactured parts: a numerical strategy applied in maxillary implantology
Post-processing of additive manufactured parts: a numerical strategy applied in maxillary implantology Open
To obtain a functional part from additive manufacturing (AM) technologies, some surfaces require post-processing by machining. An approach is developed using additive manufacturing supports as a clamping device for the milling operation. A…
View article: Effect of additive manufacturing process parameters on the titanium alloy microstructure, properties and surface integrity
Effect of additive manufacturing process parameters on the titanium alloy microstructure, properties and surface integrity Open
International audience
View article: Elastically Graded Titanium Alloy Produced by Mechanical Surface Deformation
Elastically Graded Titanium Alloy Produced by Mechanical Surface Deformation Open
The objective of this study was to develop a thermo-mechanical strategy to create a radial elasticity gradient in a β metastable Ti-Nb-Zr alloy, and to characterize it in terms of microstructural and mechanical properties. A first investig…
View article: Thermodynamically consistent formulation coupling crystal plasticity theory and Johnson-Cook damage model to simulate micromachining of copper
Thermodynamically consistent formulation coupling crystal plasticity theory and Johnson-Cook damage model to simulate micromachining of copper Open
In this work, a microstructural-related model was developed to simulate micromachining of FCC polycrystalline copper. Indeed, a crystal plasticity framework was adopted to describe the anisotropy of the mechanical behavior. Some material m…
View article: Topology optimization for the control of load transfer at the bone-implant interface: a preliminary numerical study
Topology optimization for the control of load transfer at the bone-implant interface: a preliminary numerical study Open
International audience
View article: Finite Element Analysis of the Stress Field in Peri-Implant Bone: A Parametric Study of Influencing Parameters and Their Interactions for Multi-Objective Optimization
Finite Element Analysis of the Stress Field in Peri-Implant Bone: A Parametric Study of Influencing Parameters and Their Interactions for Multi-Objective Optimization Open
The present work proposes a parametric finite element model of the general case of a single loaded dental implant. The objective is to estimate and quantify the main effects of several parameters on stress distribution and load transfer be…
View article: Development of elastically graded titanium alloys for biomedical applications
Development of elastically graded titanium alloys for biomedical applications Open
Recent works have shown that the elastic mismatch observed at the bone / implant interface could be responsible for stress shielding issues causing bone resorption phenomena and potentially implant failures. In the present study, new advan…
View article: On the Use of Functionally Graded Materials to Differentiate the Effects of Surface Severe Plastic Deformation, Roughness and Chemical Composition on Cell Proliferation
On the Use of Functionally Graded Materials to Differentiate the Effects of Surface Severe Plastic Deformation, Roughness and Chemical Composition on Cell Proliferation Open
Additive manufacturing allows the manufacture of parts made of functionally graded materials (FGM) with a chemical gradient. This research work underlines that the use of FGM makes it possible to study mechanical, microstructural or biolog…
View article: Niobium-Treated Titanium Implants with Improved Cellular and Molecular Activities at the Tissue–Implant Interface
Niobium-Treated Titanium Implants with Improved Cellular and Molecular Activities at the Tissue–Implant Interface Open
There have been several attempts to improve the cellular and molecular interactions at the tissue–implant interface. Here, the biocompatibility of titanium-based implants (e.g., Grade 2 Titanium alloy (Ti-40) and titanium–niobium alloy (Ti…