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Grant support

The research presented has been supported by the following research and innovation project: " iMPLANTS-CM ", from the "Convocatoria 2020 de ayudas para la realizacion de proyectos sinergicos de I + D en nuevas y emergentes areas cientificas en la frontera de la ciencia y de naturaleza interdisciplinar" funded by Comunidad Autonoma de Madrid (reference: Y2020/BIO-6756) . Authors acknowledge reviewers for their suggestions and comments, which have led to an improved and clearer presentation and discussion of results.

Analysis of institutional authors

Martinez, Rodrigo ZapataCorresponding AuthorVega, Carlos AguilarAuthorLantada, Andres DiazCorresponding AuthorMolina-Aldareguia, JonAuthor
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Comparative analysis of machining and electropolishing for surface quality improvement of shape memory nitinol samples additively manufactured by laser powder bed fusion

Publicated to:Additive Manufacturing Letters. 12 100261- - 2025-02-01 12(), DOI: 10.1016/j.addlet.2024.100261

Authors: Martínez, RZ; Bose-Bandyopadhyay, S; Burl, A; Contreras-Almengor, O; Vega, CA; Saleeby, K; Kurfess, T; Lantada, AD; Molina-Aldareguia, J

Affiliations

Carlos III Univ, Leganes, Spain - Author
Georgia Inst Technol, George W Woodruff Sch Mech Engn, Atlanta, GA USA - Author
Georgia Inst Technol, Georgia Tech Mfg Inst, Atlanta, GA USA - Author
IMDEA Mat Inst, Tecnogetafe, Getafe, Spain - Author
Univ Politecn Madrid, Dept Mech Engn, ETSI Ind, Madrid, Spain - Author
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Abstract

Nickel-titanium (NiTi) or nitinol alloys exhibit high corrosion resistance, mechanical strength, biocompatibility, and smart properties, rendering them ideal materials for active biomedical devices. Traditional manufacturing techniques struggle with these alloys, prompting the adoption of Laser Powder Bed Fusion (L-PBF) as a viable alternative for producing geometrically challenging features. However, L-PBF inherently introduces geometric inconsistencies and surface defects, necessitating post-processing. Electropolishing and chemical etching, while effective for surface smoothing, result in non-conformal material removal, potentially altering the designed geometry. This study examines the use of machining as a post-processing method to achieve uniform material removal and maintain geometric fidelity. Planar spring-shaped actuators were fabricated via L-PBF and subsequently machined to their final geometry using a Computer Numerical Controlled (CNC) system. The actuators were assessed for geometric accuracy and shape memory properties. Machining of the actuators lead to a near homogeneous thickness of 300 mu m in all cases, whereas the electropolished + chemically etched samples varied dramatically from

Keywords
Additive manufacturingElectropolishingMicromachiningShape-memory alloysSurface qualitSurface quality

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Additive Manufacturing Letters due to its progression and the good impact it has achieved in recent years, according to the agency Scopus (SJR), it has become a reference in its field. In the year of publication of the work, 2025, it was in position , thus managing to position itself as a Q1 (Primer Cuartil), in the category Engineering (Miscellaneous).

Independientemente del impacto esperado determinado por el canal de difusión, es importante destacar el impacto real observado de la propia aportación.

Según las diferentes agencias de indexación, el número de citas acumuladas por esta publicación hasta la fecha 2025-05-21:

  • Scopus: 1
Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-05-21:

  • The use, from an academic perspective evidenced by the Altmetric agency indicator referring to aggregations made by the personal bibliographic manager Mendeley, gives us a total of: 15.
  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 15 (PlumX).

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

  • The Total Score from Altmetric: 2.2.
  • The number of mentions on the social network X (formerly Twitter): 3 (Altmetric).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.
Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: United States of America.

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (ZAPATA MARTINEZ, RODRIGO) and Last Author (MOLINA ALDAREGUIA, JON MIKEL).

the authors responsible for correspondence tasks have been ZAPATA MARTINEZ, RODRIGO and DIAZ LANTADA, ANDRES.