Hamidreza Vanaei

Pôle Universitaire Léonard de Vinci

Cross-Flow Fans (CFFs) have been widely applied in the automotive and domestic air conditioning industries in recent decades. They are high-pressure coefficient turbomachines compacted diametrically, and thus, the complex interactions of these fans require thorough evaluation. Their innovation has opened up new directions in turbomachinery, and bot...

Cross-Flow Fans (CFFs), also known as Tangential fan, are widely used in various industries, particularly in automotive or domestic air conditioning, and have recently attained much attention. Alongside the significant research works, traditional techniques and additive manufacturing techniques have exclusively revealed stimulating results in turbo...

Nanotechnology is progressively changing the human life and health care in recent years. This technology has the capacity of changing the entire healthcare techniques by proposing novel disease prevention techniques and inventing nanorobots. One of the most important applications of nanotechnology is in the dental medicine that is capable of coveri...

Despite the application of the Additive Manufacturing process and the ability of parts’ construction directly from a 3D model, particular attention should be taken into account to improve their mechanical characteristics. In this paper, we present the effect of individual process variables and the strain-rate sensitivity of Onyx (Nylon mixed with c...

The AlSi7Mg0.6 alloy, with its good tolerance against strain, is used in laser powder bed fusion (LPBF) to produce parts with complex geometries for aerospace engineering. Production of parts with good mechanical strength requires, however, the optimization of laser parameters. This study thus evaluated the influence of scanning speed, laser power,...

Additive manufacturing (AM) has become a suitable alternative to traditional manufacturing methods. FFF material extrusion process has become the most known and used because of its ease of use and low capital and operating costs. While the Fused Filament Fabrication (FFF) process can be advantageous, it also presents drawbacks in mechanical propert...

Several process variables can be taken into account to optimize the Fused Filament Fabrication (FFF) process, a promising Additive Manufacturing technique. To take into account the most important variables, a numerical-experimental roadmap toward the optimization of FFF process by taking into account some physico-chemical and mechanical characteris...

Poly(dodecano-12-lactam) (commercially known as polyamide “PA12”) is one of the most resourceful materials used in the selective laser sintering (SLS) process due to its chemical and physical properties. The present work examined the influence of two SLS parameters, namely, laser power and hatch orientation, on the tensile, structural, thermal, and...

Anticorrosive protection efficiency of novel tetrafunctional epoxy prepolymer, namely 2,3,4,5-tetraglycidyloxy pentanal (TGP), for mild steel in 1 M HCl medium was assessed through potentiodynamic polarization (PDP), electrochemical impedance spectroscopy (EIS), scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS), contact...

Cross-flow fans (CFFs) have become increasingly popular in recent years. This is due to their use in several domains such as air conditioning and aircraft propulsion. They also show their utility in the ventilation system of hybrid electric cars. Their high efficiency and performance significantly rely on the design parameters. Up to now, there is...

Polymer membranes are central to the proper operation of several processes used in a wide range of applications. The production of these membranes relies on processes such as phase inversion, stretching, track etching, sintering, or electrospinning. A novel and competitive strategy in membrane production is the use of additive manufacturing that en...

Bonding of parts produced by fused filament fabrication (FFF) significantly depends on the temperature profile of filaments depositing one top of each other. It is necessary to evaluate the temperature profile during fabrication of structures using both theoretical and experimental approaches. This work describes the overall heat transfer (using fi...

In this study, two structurally different scaffolds, a polycaprolactone (PCL)/45S5 Bioglass (BG) composite and PCL/hyaluronic acid (HyA) were fabricated by 3D printing technology and were evaluated for the regeneration of dentin and pulp tissues, respectively. Their physicochemical characterization was performed by field emission scanning electron...

Fused filament fabrication (FFF), an additive manufacturing technique, unlocks alternative possibilities for the production of complex geometries. In this process, the layer-by-layer deposition mechanism and several heat sources make it a thermally driven process. As heat transfer plays a particular role and determines the temperature history of th...

L'étude a pour objet de modéliser les caractéristiques rhéologiques des pièces imprimées en 3D. Pour atteindre cet objectif, une étude bibliographique a été réalisée sur les effets des principales variables du processus de l'évolution de la température et leur impact sur les caractéristiques rhéologiques. Puisque les caractéristiques rhéologiques t...

3D printing, an Additive Manufacturing process, comprises the construction of parts by the deposition of extruded filaments, while moving in successive X-Y planes toward Z direction to fabricate 3D parts layer-by-layer. Since filament adhesion relies on several parameters, it is necessary to investigate both experimentally and numerically the physi...

Filament adhesion in 3D printing relies on their temperature profile. It is crucial to evaluate this issue both experimentally and numerically. Using the proposed setup for in-process monitoring of temperature profile, our developed finite volume code indicated very good agreement for the obtained results.

Three-dimensional (3D) bioprinting, an additive manufacturing based technique of biomaterials fabrication, is an innovative and auspicious strategy in medical and pharmaceutical fields. The ability of producing regenerative tissues and organs has made this technology a pioneer to the creation of artificial multi-cellular tissues/organs. A broad var...

Purpose Fused deposition modeling (FDM) draws particular attention due to its ability to fabricate components directly from a CAD data; however, the mechanical properties of the produced pieces are limited. This paper aims to present the experimental aspect of multi-scale damage analysis and fatigue behavior of polylactic acid (PLA) manufactured by...

Fused filament fabrication (FFF), which is an additive manufacturing technique, opens alternative possibilities for complex geometries fabrication. However, its use in functional products is limited due to anisotropic strength issues. Indeed, the strength of FFF fabricated parts across successive layers in the build direction (Z direction) can be s...

Fused filament fabrication, an additive manufacturing technique, is used to produce prototypes and a gradually more important processing route to get final products. Due to the layer-by-layer deposition mechanism involved, bonding between adjacent layers is controlled by the thermal energy of the material being printed. Thus, it is strongly in conj...

Fused Filament Fabrication (FFF) is an additive manufacturing (AM) technique that is used to produce prototypes and a gradually more important processing route to obtain final products. Due to the layer-by-layer deposition mechanism involved, bonding between adjacent layers is controlled by the thermal energy of the material being printed, which st...

Fused Filament Fabrication is classified as one of the most used processes in Additive Manufacturing rapid prototypes out of polymeric material. Poor strength of the deposited layers is still one of the main critical problems in this process, affecting the mechanical properties of the final parts. To improve the mechanical strength, investigation o...

Fused Filament Fabrication is classified as one of the most used processes in Additive Manufacturing rapid prototypes out of polymeric material. Poor strength of the deposited layers is still one of the main critical problems in this process, affecting the mechanical properties of the final parts. To improve the mechanical strength, investigation o...

Pipelines are the very important energy transmission systems. Over time, pipelines can corrode. While corrosion could be detected by In-Line Inspection (ILI) tools, corrosion growth rate prediction in pipelines is usually done through corrosion rate models. For pipeline integrity management and planning selecting the proper corrosion ILI tool and a...

Pipelines are the most important power transmission systems. Over time, pipelines can corrode. In this paper different methods for determining corrosion of pipelines and also calculating corrosion rates are introduced. Models for assessing corrosion rate use single inspection and multiple inspection data. Some of the corrosion growth rate models in...