Title :

Local thermal transfer improvement by using bimetallic architectured materials for braking application – numerical and experimental evaluations

Author(s) :

An, Tao [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Cristol, Anne-Lise [Auteur]
Laboratoire de Mécanique, Multi-physique, Multi-échelle (LaMcube) - UMR 9013
Magnier, Vincent [Auteur]
Laboratoire de Mécanique, Multi-physique, Multi-échelle (LaMcube) - UMR 9013
GRUESCU, Cosmin [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Touzin, Matthieu [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Balloy, David [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207

Journal title :

Applied Thermal Engineering

Abbreviated title :

Applied Thermal Engineering

Pages :

128016

Publisher :

Elsevier BV

Publication date :

2025-12

ISSN :

1359-4311

English keyword(s) :

Thermal dissipation
Bimetallic materials
Periodic foam
FEM
Tribology

HAL domain(s) :

Chimie/Matériaux
Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]

English abstract : [en]

The thermal dissipation of a bimetallic material, based on Cu periodic foams filled with a classical sintered braking pad material, is studied in the present work. First, foam design (size, porosity, angle and cross-section) ...
Show more >The thermal dissipation of a bimetallic material, based on Cu periodic foams filled with a classical sintered braking pad material, is studied in the present work. First, foam design (size, porosity, angle and cross-section) and finite element method (FEM) simulation were carried out to investigate the global and local thermal diffusivity of the bimetallic materials. The samples were prepared by a mixed process of investment casting and hot pressing. The global and local thermal dissipation of the bimetallic materials were measured by laser flash analysis (LFA) and a scale-reduced tribological test bench, respectively. Finally, a thermal enhancement mechanism of foam to the bimetallic materials is discussed. The heat dissipation behavior of the bimetallic materials can be predicted due to the architecture of the foams. It is shown by both simulation and experiments that the local thermal dissipation of the bimetallic materials can be improved with decrease in representative elementary volume (REV) size of foams. The maximum diffusion distance of heat from the filler material to the foam decreases with the decrease in REV size. As a result, the heat transfer efficiency at interface increases and then the Cu foam acts as a rapid pathway, transferring the heat from the interface to the bulk.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS
INRAE
ENSCL

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Research team(s) :

Métallurgie Physique et Génie des Matériaux

Submission date :

2025-11-04T14:33:07Z
2025-11-05T09:01:43Z
2025-11-05T14:36:20Z