From functional prototypes to industrial products

Hernández-Pérez, Juan Carlos; Osorio-Gómez, Gilberto; Mejía-Gutiérrez, Ricardo

doi:10.1007/s12008-015-0260-9

Cited by 3 publications

(1 citation statement)

References 5 publications

(4 reference statements)

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“…Additive manufacturing (AM) gained large attention in the last decade [1]. Despite the advantages in geometry versatility and waste mitigation, products made by AM technology could experience undesirable internal defects and residual stresses causing dimensional inaccuracy due to distortion.…”

Section: Introductionmentioning

confidence: 99%

A Comparison of Predicted Distortion of a Manifold Fabricated by Laser Powder Bed Fusion Using Solid and Shell Element-based Finite Element Models

Rahman

Uzunov

Afazov

2022

Digital Manufacturing Technology

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This paper compares the predicted distortion of a manifold geometry fabricated by laser powder bed fusion between an established finite element model using solid elements and a newly developed in this paper finite element model using shell elements. The developed finite element models utilized two methods to induce a strain field (inherent strain and analytical thermal methods). The predicted distortions from these models were also compared with experimentally measured distortions. The results showed that the predicted distortion using solid elements is more suitable to predict the buckling effect on the manifold geometry. Despite that, the model using shell elements showed an accurate prediction of distortion in many areas of the manifold, and it proved to be computationally more efficient (2.4 times faster), this model showed lower accuracy in the prediction of distortion generated by buckling. However, shell elements could be used in other applications where the bucking is not the driving mechanism for the prediction of distortion in laser powder bed fusion or in applications where the accuracy of distortion is not a requirement (e.g.,support structures).

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Section: Introductionmentioning

confidence: 99%

A Comparison of Predicted Distortion of a Manifold Fabricated by Laser Powder Bed Fusion Using Solid and Shell Element-based Finite Element Models

Rahman

Uzunov

Afazov

2022

Digital Manufacturing Technology

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Structure-function correlations analysis and functional semantic annotation of mechanical CAD assembly model

Han

Yang

et al. 2019

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PurposeThree-dimensional computer-aided design (CAD) assembly model has become important resource for design reuse in enterprises, which implicates plenty of design intent, assembly intent, design experience knowledge and functional structures. To acquire quickly CAD assembly models associated with specific functions by using product function requirement information in the product conceptual design phase for model reuse, this paper aims to find an approach for structure-function correlations analysis and functional semantic annotation of mechanical CAD assembly model before functional semantic-based assembly retrieval.Design/methodology/approachAn approach for structure-function correlations analysis and functional semantic annotation of CAD assembly model is proposed. First, the product knowledge model is constructed based on ontology including design knowledge and function knowledge. Then, CAD assembly model is represented by part attributed adjacency graph and partitioned into multiple functional regions. Assembly region and flow-activity region are defined for structure-function correlations analysis of CAD assembly model. Meanwhile, the extraction process of assembly region and flow-activity region is given in detail. Furthermore, structure-function correlations analysis and functional semantic annotation are achieved by considering comprehensively assembly structure and assembled part shape structure in CAD assembly model. After that, a structure-function relation model is established based on polychromatic sets for expressing explicitly and formally relationships between functional structures, assembled parts and functional semantics.FindingsThe correlation between structure and function is analyzed effectively, and functional semantics corresponding to structures in CAD assembly model are labeled. Additionally, the relationships between functional structures, assembled parts and functional semantics can be described explicitly and formally.Practical implicationsThe approach can be used to help designers accomplish functional semantic annotation of CAD assembly models in model repository, which provides support for functional semantic-based CAD assembly retrieval in the product conceptual design phase. These assembly models can be reused for product structure design and assembly process design.Originality/valueThe paper proposes a novel approach for structure-function correlations analysis and functional semantic annotation of mechanical CAD assembly model. Functional structures in assembly model are extracted and analyzed from the point of view of assembly structure and function part structure. Furthermore, the correlation relation between structures, assembled parts and functional semantics is expressed explicitly and formally based on polychromatic sets.

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University–industry collaboration in the technology development and technology commercialization stage: a systematic literature review

Pujotomo

Hassan

Ma’aram

et al. 2023

JARHE

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PurposeAs university–industry collaboration (UIC) is associated to transfer of knowledge and technology, this collaboration is an extremely important field of study for the world's economies that helps industries become more competitive. UIC will assist universities in fine-tuning universities' educational programs to match with the industrial demand. This study, thus, presents a systematic literature review related to UIC in technology development process and technology commercialization.Design/methodology/approachThe Scopus database is used to extract the relevant articles. First, in presenting the articles, four scientometric analyses are used to visualize the bibliometric clusters, namely articles and journals co-citation analysis, countries collaboration analysis and keywords co-occurrence analysis. Next, a qualitative approach is used to classify the articles according to the methodology used and type of research. Finally, a research trend and keywords' evolution based on keywords are also provided.FindingsResults of this study reveal that majority of the articles used qualitative approach and descriptive analysis to explain the knowledge flow between industries and universities. According to the research trend analysis, researchers in this field were moving from the knowledge-based economy topic (from 2010–2013) to product development (2014–2015), technology commercialization (2016–2017), open innovation (2018–2019) and then currently are focusing on the green entrepreneurship topic.Practical implicationsThis study is expected to facilitate scholars to uncover gaps in the literature of UIC.Originality/valueThis study extends the use of scientometric analysis. The combination of “bibliometrix” R-package tool and VOSViewer software to perform the analysis is expected to give a new insight of doing the systematic literature review.

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From functional prototypes to industrial products

Cited by 3 publications

References 5 publications

A Comparison of Predicted Distortion of a Manifold Fabricated by Laser Powder Bed Fusion Using Solid and Shell Element-based Finite Element Models

A Comparison of Predicted Distortion of a Manifold Fabricated by Laser Powder Bed Fusion Using Solid and Shell Element-based Finite Element Models

Structure-function correlations analysis and functional semantic annotation of mechanical CAD assembly model

University–industry collaboration in the technology development and technology commercialization stage: a systematic literature review

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