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View article: A New Grinding Wheel Design with a 3D Internal Cooling Structure System
A New Grinding Wheel Design with a 3D Internal Cooling Structure System Open
This work discusses challenges in conventional grinding wheels: heat-induced tool wear and workpiece thermal damage. While textured abrasive wheels improve heat dissipation, the current surface-only methods, such as those based on laser an…
View article: Polydimethylsiloxane Surface Modification of Microfluidic Devices for Blood Plasma Separation
Polydimethylsiloxane Surface Modification of Microfluidic Devices for Blood Plasma Separation Open
Over the last decade, researchers have developed a variety of new analytical and clinical diagnostic devices. These devices are predominantly based on microfluidic technologies, where biological samples can be processed and manipulated for…
View article: Experimental Analysis of Heat Transfer at the Interface between Die Casting Molds and Additively Manufactured Cooling Inserts
Experimental Analysis of Heat Transfer at the Interface between Die Casting Molds and Additively Manufactured Cooling Inserts Open
The rate of heat transfer to the mold during solidification determines the cooling rate of castings, which significantly impacts their characteristics. The use of an insert produced by additive manufacturing in the mold, with appropriately…
View article: Experimental Thermal Behavior of Fibrous Structures for High-Performance Heat Resistant Fire Curtains
Experimental Thermal Behavior of Fibrous Structures for High-Performance Heat Resistant Fire Curtains Open
Fibrous materials are often used in the manufacturing of fire protection devices such as fire curtains. Their optimization and improved performance is still a topic of interest. The present work aims to develop and test a new combination o…
View article: An Experimental and Numerical Study on Aluminum Alloy Tailor Heat Treated Blanks
An Experimental and Numerical Study on Aluminum Alloy Tailor Heat Treated Blanks Open
Information is presented on the conceptualization, experimental study, and numerical process simulation of tailor heat treated aluminum alloy blanks. This concept is intended to improve the forming behavior of aluminum parts in challenging…
View article: Texturing Methods of Abrasive Grinding Wheels: A Systematic Review
Texturing Methods of Abrasive Grinding Wheels: A Systematic Review Open
Creating textures on abrasive wheels is a strategy that allows a significant improvement in grinding operations. The reduction of the internal stresses in the workpiece and the temperature during the grinding operation generates an increas…
View article: Thermoelectric Properties of N-Type Poly (Ether Ether Ketone)/Carbon Nanofiber Melt-Processed Composites
Thermoelectric Properties of N-Type Poly (Ether Ether Ketone)/Carbon Nanofiber Melt-Processed Composites Open
The thermoelectric properties, at temperatures from 30 °C to 100 °C, of melt-processed poly(ether ether ketone) (PEEK) composites prepared with 10 wt.% of carbon nanofibers (CNFs) are discussed in this work. At 30 °C, the PEEK/CNF composit…
View article: Thermal Contact Resistance between Mold Steel and Additively Manufactured Insert for Designing Conformal Channels: An Experimental Study
Thermal Contact Resistance between Mold Steel and Additively Manufactured Insert for Designing Conformal Channels: An Experimental Study Open
The focus of this research is on thermal contact resistance between a mold and its insert, specifically inserts made by additive manufacturing (AM). Using a thermal steady-state system and varying contact pressures (0, 50, 75, and 100 bars…
View article: Dimensional Variations in Drying of Composite Components for Abrasive Wheels
Dimensional Variations in Drying of Composite Components for Abrasive Wheels Open
Abrasive wheels are composed of abrasive grains, vitreous bond precursors and a temporary binder that, normally, includes a liquid part to give consistency and plasticity to the green body [1]. During the drying thermal cycle, there are le…
View article: The Influence of Precipitation Hardening on the Damping Capacity in Al–Si–Mg Cast Components at Different Strain Amplitudes
The Influence of Precipitation Hardening on the Damping Capacity in Al–Si–Mg Cast Components at Different Strain Amplitudes Open
An A356 alloy is a classic casting light alloy, which is able to be processed into complex geometrical shapes with tailored static and dynamic mechanical properties. As a promising material to reduce fuel and energy consumption in future v…
View article: i9MASKS Workshop: Extended Abstracts
i9MASKS Workshop: Extended Abstracts Open
The pandemic caused by COVID-19 has spread quickly and has caused a great number of deaths worldwide. Due to the progressively increase of infected patients, countries have used preventive measures against this pandemic, such as the use of…
View article: Thermal Conversion of Pine Wood and Kinetic Analysis under Oxidative and Non-Oxidative Environments at Low Heating Rate
Thermal Conversion of Pine Wood and Kinetic Analysis under Oxidative and Non-Oxidative Environments at Low Heating Rate Open
Atmosphere is one of the most significant factors in the thermal decomposition of biomass. In domestic or industrial biomass boilers, ambient oxygen concentration varies through time, which means that the reaction will change from pyrolysi…
View article: Influence of Operating Conditions on the Thermal Behavior and Kinetics of Pine Wood Particles Using Thermogravimetric Analysis
Influence of Operating Conditions on the Thermal Behavior and Kinetics of Pine Wood Particles Using Thermogravimetric Analysis Open
Although there are many studies available in literature about biomass pyrolysis or devolatilization using thermogravimetric analysis (TGA), the effects of important operating parameters have infrequently been investigated for pine wood par…
View article: Influence of the Microstructure on the Creep Behaviour of Tin-Silver-Copper Solder
Influence of the Microstructure on the Creep Behaviour of Tin-Silver-Copper Solder Open
A common failure mode of electronic printed circuit boards (PCB’s) is the appearance of cold solder joints between the component and PCB, during product life. This phenomenon is related to solder joint fatigue and is attributed mainly to t…
View article: Experimental study of the Cu-Al-Sn phase equilibria, close to the copper zone
Experimental study of the Cu-Al-Sn phase equilibria, close to the copper zone Open
The ternary Cu-Al-Sn phase diagram is the base for several important types of alloys, with relevant industrial interest and applications. The knowledge of the melting/solidification alloys characteristics are determinant for their preparat…
View article: Effects of different environmental conditions on the mechanical characteristics of a structural epoxy
Effects of different environmental conditions on the mechanical characteristics of a structural epoxy Open
With the aim of characterising a commercially available epoxy adhesive used for fibre-reinforced polymers strengthening applications, when submitted to different environmental conditions, mainly thermal (TC), freeze-thaw (FT), and wet-dry …
View article: Process Development for Manufacturing of Cellular Structures with Controlled Geometry and Properties
Process Development for Manufacturing of Cellular Structures with Controlled Geometry and Properties Open
This study presents experimental results on the behaviour of aluminium alloy metal structures and foams manufactured by lost-wax casting and using 3D printed components for internal structure definition. Results for tensile tests, metallur…