1084 documents found, page 1 of 109

Effect of coolant flow rate and depth of cut on grinding temperature using stru...

Effective control of heat and debris removal during grinding operations are crucial for process optimization. Various approaches are being studied to distribute adequately and efficiently the grinding fluid in the contact zone. This study evaluates an innovative methodology using grinding wheels with an internal network of “cooling channels” designed to deliver the grinding fluid directly from the wheel's core ...

Experimental and CFD simulation analysis of 3D cooling channels to improve the ...

Efficient heat and debris removal is essential to optimize the grinding process. A promising approach is the incorporation of three-dimensional channels in the grinding wheel to improve cutting fluid distribution. This study evaluates two types of grooved abrasive discs with spiral and hexagonal geometries, comparing them to a non-structured disc. In addition to experimental tests, Computational Fluid Dynamics ...

Enhancing lubrication efficiency in grinding wheels through internal channels s...

Effective control of heat and debris removal during grinding operations is critical for process optimization. The distribution of grinding fluids in the contact zone is being studied using different approaches (structured surfaces…). This study proposes an innovative methodology employing grinding wheels with an internal network of cooling channels designed to deliver grinding fluid directly from the wheel's ce...

Design of an experimental grinding machine for testing abrasive wheels with a 3...

Precision manufacturing often utilizes grinding as a method to fabricate components with accuracy, enhanced surface quality, and desirable forming tolerances. The working conditions of a grinding machine and the attributes of the abrasive wheel play a crucial role in influencing the grinding process. Main challenges in grinding are related to heat dissipation, resulting in issues such as tool wear, increased fo...

International Symposium on Occupational Safety and Hygiene: Proceedings Book of...

Thriving in change: Examining the influence of organizational sustainability on...

Purpose The economic, financial and social crisis has heightened researchers' interest in the importance of organizational sustainability and resources (e.g. work engagement and psychological capital) for performance. Despite some studies demonstrating the significance of resources, such as work engagement and psychological capital, for workers’ performance, there is limited knowledge regarding the role of orga...

International symposium on occupational safety and hygiene: Abstracts book of t...

Fighting occupational risks among Portuguese wildland firefighters: looking at ...

Background: Evidence linking wildland firefighters’ occupational exposure and health outcomes is still limited. Cytogenetic endpoints have long been applied in the surveillance of human genotoxic exposures and early effects of genotoxic carcinogens. Therefore, it is of utmost importance to clarify the exposure-induced cytogenetic effects concerning wildland firefighters’ occupational exposure at different time ...

Flexible work arrangement expectations: The impact on psychological contract br...

The main goal of this paper is to understand the impact of flexible work arrangements expectations in the reality of post Covid-19 have on organizational commitment, job satisfaction, and work-life balance. Moreover, we examine the mediating role of psychological contract breach. In a sample of one hundred and thirty employees, findings show that there is a discrepancy between what employees expect and receive ...

Multicomponent measures to assess the sustainability of diets: a systematic review