P. Capela

Grinding performance of a structural wheel with internal cooling channels

Sharlane Maria Costa, P. Capela, João Ribeiro, Mário Pereira et autres

Grinding is a high-energy finishing process in which effective cooling is essential to control temperature, forces and surface integrity [1]. In conventional flood cooling, the coolant is applied externally and its action in the contact zone is often limited. Internally cooled grinding …

Tribological characterization of bi-functional abrasive composite

P. Capela, Sharlane Maria Costa, Márcia Correia, José Gomes et autres

Abrasive grinding wheels play a key role in industrial machining operations involving material removal and surface finishing, particularly in applications requiring high precision and strict surface quality. However, heat generation during grinding remains a challenge, as friction and cutting at the wheel–workpiece …

CFD and experimental investigation of channel diameter effects in structured internally cooled grinding wheels

Sharlane Costa, P. Capela, Maria de Nazaré Valente de Sousa, Amauri Hassui et autres

Efficient cooling and lubrication are critical in grinding due to the high specific energy and limited contact area involved. Conventional external methods often fail to penetrate the air barrier formed by the rotating wheel, leading to excessive heat generation and reduced process …

Wall Radiant Panels: Thermal Comfort Enhancement

P. Capela, Pedro Gonçalves, Ana Maria de Figueiredo Beltrão Corrêa de ARAÚJO, Pedro Lobarinhas et autres

Abstract Thermal comfort is essential for the quality of indoor environments, influencing the well-being of their occupants. The conventional air conditioning systems, based on convection, are facing challenges related to energy consumption, uneven temperature distribution and air movements and quality. In this …

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Effect of Porosity in Grinding Wheels With Internal Cooling Channels on Grinding Process Efficiency

P. Capela, Sharlane Costa, Márcia Correia, Luís Carvalho et autres

Abstract Abrasive grinding wheels are essential in manufacturing for shaping, precisely machining, and finishing metal surfaces, meeting the demand for complex geometries and high-quality finishes. However, managing heat during grinding is crucial, as an excessive temperature can cause thermal damage, accelerate wheel …

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Performance of 3D-structured grinding wheels with multi-layer internal cooling channels

Stephane Caroline da Silva Costa, P. Capela, Amauri Hassui, João Ribeiro et autres

• Sacrificial 3D-printed inserts created multilayer channels in vitrified wheels. • Manufacturing method integrates with pressing-sintering, no post-processing. • Tangential force reduced by 49.3% with multi-layer internal channels. • Temperature variation dropped 58.6% with 3D-structured wheels. • Internal cooling doubled the removal …

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CFD analysis of multi-layer cooling channels in three-dimensionally structured grinding wheels

Stephane Caroline da Silva Costa, P. Capela, Amauri Hassui, João Ribeiro et autres

Minimizing heat damage and surface integrity loss in grinding depends on effective cooling. Conventional techniques, however, suffer with low efficiency because of the fast air barrier restricting fluid access. Grinding wheels with internal cooling channels have been suggested to solve this; nonetheless, …

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A New Grinding Wheel Design with a 3D Internal Cooling Structure System

Stephane Caroline da Silva Costa, P. Capela, Matheus Sathler de Souza, José R. B. Gomes et autres

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 and machining, have high renewal costs. The proposed manufacturing technology …

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Influence of Geometry and Mass on the Heat Transfer Properties of a Casted Heat Sink

P. Capela, Flávia de Souza Barbosa, Inês V. Gomes, Filipe Prior et autres

Abstract In recent years, manufacturing technologies have advanced, and producing parts with complex geometries is now possible. For example, a proper cooling system must be designed when casting is used in production of geometrically intricate component. An excellent example of a complex …

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Experimental Analysis of Heat Transfer at the Interface between Die Casting Molds and Additively Manufactured Cooling Inserts

P. Capela, Inês V. Gomes, Vítor P. Lopes, F. Prior et autres

Abstract 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 designed cooling channels, enables adequate cooling …

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Wear behavior of a new composite formulation, with TEOS addition, for abrasive vitrified grinding wheels

P. Capela, Stephane Caroline da Silva Costa, MATEUS SILVA SOUZA, S. Carvalho et autres

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Thermal Contact Resistance between Mold Steel and Additively Manufactured Insert for Designing Conformal Channels: An Experimental Study

Andrews Souza, P. Capela, Vítor P. Lopes, Filipe Prior et autres

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), we present experimental results …

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