Search results

The paper aims to design a process to mechanize traditional chasing and repoussé which is the art of creating an artistic pattern on a sheet metal by making high and low points through utilization of hammer and chisel. In scientific literature, it is a kind of incremental sheet metal forming.

In the designed process, a magnetic actuator is used as a hammer which converts electric energy into kinetic reciprocal impact energy, and hammering sequence is completely controlled via the designed software. The sheet is bound not to move easily. Then, a hammering mechanism is connected to the numerical control machine. As the magnetic hammer is moved gradually along the defined path, the sheet is chased gradually by controlling the consecutive impacts. Different methods of test sheet entanglement are also discussed to reduce noise and undesired deformations of sheet, and indents are also clarified.

The designed mechanism enables the user to form desired art patterns faster with more precision via the automated process. The hammering sequence is controlled via computer successfully. The designed magnetic actuator could be commercialized easily. Experiments show that the pitch under sheet is the best. Typical art patterns are chased successfully.

In incremental sheet metal punching, there was no control on hammering sequence before. In this process, the designed magnetic hammer is quite controllable. Also, it is easily attached to the computerized numerical control (CNC) and is suitable for commercial use. Furthermore, the stuff under sheet was not taken into consideration before.

The function for the historically Black college and university (HBCU) has always been a hallmark of resolve educational inclusion and justice to promote the Negro identity, and develop social and economic mobility. Yet despite diversity, equity, and inclusion (DEI) determinations popular today, the authors contend that to cater to subpopulations outside of the Black community creates a marginalization and distraction from their historic purpose and legacy. As a necessary function of relevance, the focus of underserved populations on HBCU campuses should, instead, unwaveringly remain on African-Americans, descendants of slaves (DoS). We empirically examine HBCU academic curricula for African-American consciousness that is forward thinking for community advocacy and social justice. Research findings of HBCU course catalogs (N = 98) describe a very limited scope of course titles and descriptions that appear to cultivate intellectual tools to engage in racial and ethnic self-advocacy as a vital role for continued survival. The authors contend that the relevance of HBCU institutions cannot be fully realized and promoted absent a comprehensive understanding of the educational and socioeconomic status of the African-American population. Discussed are the implications and recommendations of how HBCUs will be able to retain their uniqueness and viability of purpose, including the application of social reconstructive theory in practice, as a theoretical framework.