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This study aims to produce Fe2.9wt.%Si ferromagnetic material via laser powder bed fusion (L-PBF) for the realization of electromagnetic actuators (EMA). This study is necessary as there are no documents in scientific literature regarding the manufacturing of Iron-Silicon plungers using the L-PBF additive manufacturing (AM) technique. The microstructure, and magnetic properties were characterized using various techniques. The results indicate that the samples produced via L-PBF process exhibit good magnetic properties ( $\mu = 748, H_{C}= 87.7 [A/m]$ ) especially after annealing treatment at 1200° C for 1h ( $\mu = 3224, H_{C}= 69.1 [A/m] $ ), making it a promising material for use in electromagnetic actuators.

This paper looks at the collaborative design activity involved in a design experiment of an electromechanical plunger. Much of the coordination was achieved through internet-based communication. As mechanical and electrical researchers involved in the design project, we discuss the information exchanges highlighted by our different professional cultures and relate how these exchanges lead us to propose some methodology to improve the efficiency of virtual meetings. Moreover, we show the need for new communication tools, ones dedicated to specific tasks that are not currently supported, especially shared concept formalization among technical experts. [ABSTRACT FROM AUTHOR]

Presents information on a study which described a finite element scheme for colliding meshes. Overlapping meshes; Results of the study; Conclusions.