Jairo Nuñez

Prof. Jairo Nuñez

Universidad Pontificia Bolivariana seccional Bucaramanga

Research Focus & Metrics

Academic Career Length

9Years (2018-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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2 June 2021 in Processes
Verified
Journal Article
Open access
PDF file
JNJairo Nuñez
Jairo Nuñez
HSHugo Hernando Andrade Sosa
Hugo Hernando Andrade Sosa
Sylvia María Villarreal-ArchilaSylvia María Villarreal-Archila
Sylvia María Villarreal-Archila
ÁBÁngel Ortiz Bas
Ángel Ortiz Bas
A system dynamics model was developed with the primary purpose of visualizing the behavior of a supply chain (SC) when it adopts a disruptive technology such as additive manufacturing (AM). The model proposed a dynamic hypothesis that defines the following issue: what is the impact of the AM characteristics and processes in the SC? The model was represented through a causal diagram in thirteen variables related to the SC, organized in two feedback cycles and a data flow diagram, based mainly on the three-essential links of the SC and the order display traceability: supplier–focal manufacturer–distribution Network. Once proposed, the model was validated through the evaluation of extreme conditions and sensitivity analysis. As a result, the dynamic behavior of the variables that condition the chain management was analyzed, evidencing reduction times in production, especially in products that require greater complexity and detail, as well as reductions in inventories and the amount of raw material due to production and storing practices from AM. This model is the starting point for alternative supply chain scenarios through structural operating policies and operating policies in terms of process management.

23 November 2022 in Processes
Verified
Journal Article
Open access
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JNJairo Nuñez
Jairo Nuñez
HSHugo Hernando Andrade Sosa
Hugo Hernando Andrade Sosa
Sylvia María Villarreal-ArchilaSylvia María Villarreal-Archila
Sylvia María Villarreal-Archila
ÁBÁngel Ortiz Bas
Ángel Ortiz Bas
In order to describe the impact that the appropriation of additive manufacturing (AM) has on the supply chain (SC), a validated system dynamics model representing vectorially multiple products and multiple demands in different periods was used as a basis to apply to a case study of medical implant manufacturing, configuring three chain scenarios: 1. traditional supply chain with subtractive manufacturing, 2. centralized supply chain with additive manufacturing, and 3. decentralized supply chain with additive manufacturing. It was possible to notice that the production time is longer in additive manufacturing compared to traditional manufacturing and the cycle time and total demand closure were lower in traditional manufacturing. In addition, it was observed that the AM performance is significantly better in conditions of lower demand, which can be attributed to the characteristics of customization and small batches that this type of production approach implies.

28 October 2025 in Journal of Composites Science
Verified
Journal Article
Open access
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MMMariana Mutis
Mariana Mutis
MTMario andres Guerrero Torres
Mario andres Guerrero Torres
Sylvia María Villarreal-ArchilaSylvia María Villarreal-Archila
Sylvia María Villarreal-Archila
JNJairo Nuñez
Jairo Nuñez
Additive manufacturing (AM) is rapidly transforming clinical workflows in dentistry by enabling the customized, efficient, and digitally integrated production of dental devices. However, the existing literature lacks a process-oriented perspective on its technical and operational impact. This study aims to address this gap through a dual-phase analysis using the Input–Transformation–Output (ITO) framework, providing practical insights into the operational reconfiguration enabled by AM. The first phase examined materials, image acquisition methods, design and lamination software, printing technologies, and key parameters across each stage of the AM workflow. The second phase analyzed four clinical applications (dental models, crowns and bridges, occlusal splints, and surgical guides) supported by a structured fabrication protocol and scanning electron microscopy (SEM) of 18 resin samples to assess surface quality and process-related defects. In addition, for each application, a comparative process analysis with traditional workflows was conducted using ASME diagramming. The findings indicate that AM reduces cycle times, manual intervention, and supply chain reliance while enabling production models such as Make-to-Order (MTO) and Engineer-to-Order (ETO). Its integration also fosters decentralized, in-clinic manufacturing with enhanced autonomy, flexibility, and reduced lead times. Nonetheless, this study highlights persisting challenges, including post-processing quality control, training requirements, and cost-efficiency concerns in low-volume settings. A hybrid model combining AM with conventional methods emerges as a pragmatic strategy for clinical adoption.

21 December 2023 in Crystals
Verified
Journal Article
Open access
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CRCamilo Rivera
Camilo Rivera
JNJairo Nuñez
Jairo Nuñez
ÁBÁngel Ortiz Bas
Ángel Ortiz Bas
This research delves into the transformative potential of additive manufacturing (AM) within the jewelry industry, focusing on materials such as PLA, PolySmooth, and resin to process a ring. The study encompasses an analysis of the materials, the role of the Scanning Electron Microscope (SEM), the CAD design stage, printers, post-processing techniques, and the Input-Transformation-Output (ITO) process. SEM plays a crucial role in understanding material behavior at a micro-level, offering invaluable insights into its selection. The CAD design stage is foundational, providing a precise digital representation before physical production. Additive manufacturing showcases advantages over traditional methods, including design flexibility and production. Various printers and post-processing methods contribute to enhancing the quality and aesthetics of the final products. The Input-Transformation-Output process emerges as a strategic approach for efficient AM implementation. This study highlights the need for the continued exploration and integration of AM, emphasizing its potential to reshape how jewelry is designed, manufactured, and experienced, thereby providing a foundation for further research and advancements in this transformative field. Additionally, each stage of the Input-Transformation-Output process of Polysmooth, PLA, and resin ring prototypes is studied.

19 September 2018
Verified
Book Chapter
Closed access
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JNJairo Nuñez
Jairo Nuñez
ÁOÁngel Ortiz
Ángel Ortiz
MRManuel Arturo Jiménez Ramírez
Manuel Arturo Jiménez Ramírez
Jairo Alexander González-BuenoJairo Alexander González-Bueno
Jairo Alexander González-Bueno
MBMarianela Luzardo Briceño
Marianela Luzardo Briceño

23 April 2024 in Ingenierías USBMed
Verified
Journal Article
Open access
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ACAna Milena Carreño
Ana Milena Carreño
MSMargy Estefany Torres Serrano
Margy Estefany Torres Serrano
MRMarlon Stiven Ramírez Rojas
Marlon Stiven Ramírez Rojas
JNJairo Nuñez
Jairo Nuñez
The objective of this study was focused on carrying out an analysis on the main contributions of additive manufacturing in dental pieces and the benefits of this procedure in dentistry, as well as establishing the advantages and limitations that this modality entails. The research was based on a systematic review with adaptability to Prisma and Tranfield methodology, through which the impact of additive manufacturing in dental clinics and in the various clients who acquire the pieces in terms of taste and adherence to product, likewise, in terms of contribution to knowledge, the study remains as a precedent for other investigations that are carried out later on this topic. Articles published in the last five years from the Scopus and Web of Science databases were reviewed. The process was developed through inclusion and exclusion criteria, wherein its final instance the material criteria, type of printing, and post-processing were reviewed, to which a final filter was made that yielded the articles for review of the literature. This project contributes to the knowledge of the processes that are carried out in additive manufacturing in dental pieces, the advantages and disadvantages, thus leaving a precedent for the adherence of dental clinics to this method.