A complete methodology for the mechanical diagnosis of statue provided by innovative uses of 3D model. Application to the imperial marble statue of Alba-la-Romaine (France)

Bagnéris, Marine; Cherblanc, Fabien; Bromblet, Philippe; Gattet, Eloi; Gugi, L.; Nony, Nicolas; Mercurio, Vincent; Pamart, Anthony

doi:10.1016/j.culher.2017.05.002

Cited by 29 publications

(8 citation statements)

References 32 publications

(34 reference statements)

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“…This method is very suitable in the field of mechanical engineering, but it is time consuming for complex and large buildings. Due to the complexity and irregularity typical of historic masonry buildings, the "Create mesh and solid model" approach is considered the most performing (Bagnéris et al, 2017). In this line, the Level of Detail (LOD) of mesh is an element of great importance to obtaining a reliable structural analysis (Spangher and Visintini, 2015) The objective of an ever-increasing LOD highlights two sides of the same coin: on one hand it improves the reliability and quality of the analysis and carried out evaluations (Giaccone et al, 2020), on the other it causes interoperability issues.…”

Section: Structural Model Generation Approachesmentioning

confidence: 99%

Point Cloud Exploitation for Structural Modeling and Analysis: A Reliable Workflow

Lucidi

Giordano

Clementi

et al. 2021

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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Abstract. The digitization and geometric knowledge of the historical built heritage is currently based on point cloud, that rarely or only partially is used as digital twin for structural analysis. The present work deals with historical artefacts survey, with particular reference to masonry structures, aimed to their structural analysis and assessment. In detail, the study proposes a methodology capable of employing semi-directly the original data obtained from the 3D digital survey for the generation of a Finite Element Model (FEM), used for structural analysis of masonry buildings.The methodology described presents a reliable workflow with twofold purpose: the improvement of the transformation process of the point cloud in solid and subsequently obtain a high-quality and detailed model for structural analyses.Through the application of the methodology to a case study, the method consistency was assessed, regarding the smoothness of the whole procedure and the dynamic characterization of the Finite Element Model. The main improvement in respect with similar or our previous workflows is obtained by the introduction of the retopology in data processing, allowing the transformation of the raw data into a solid model with optimal balancing between Level of Detail (LOD) and computational weight. Another significant aspect of the optimized process is undoubtedly the possibility of faithfully respecting the semantics of the structure, leading to the discretization of the model into different parts depending on the materials. This work may represent an excellent reference for the study of masonry artefacts belonging to the existing historical heritage, starting from surveys and with the purpose to structural and seismic evaluations, in the general framework of knowledge-based preservation of heritage.

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Section: Structural Model Generation Approachesmentioning

confidence: 99%

Point Cloud Exploitation for Structural Modeling and Analysis: A Reliable Workflow

Lucidi

Giordano

Clementi

et al. 2021

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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“…Virtual reality and computer graphics are considered by specialists in interpretative studies [1] and in-depth diagnostic analyses [2] as precious interaction tools to simulate the physical restoration of ancient sculptures in a non-invasive way [3].…”

Section: Introductionmentioning

confidence: 99%

The Virtual Reconstruction of the Aesculapius and Hygeia Statues from the Sanctuary of Isis in Lilybaeum: Methods and Tools for Ancient Sculptures’ Enhancement

et al. 2022

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Thanks to recent technological developments in 3D surveys, computer graphics and virtual reality, new scenarios have been opened for the documentation and enhancement of ancient sculptures. When not totally preserved, sculptures can be digitally reproduced, modified and visualized to simulate their physical or virtual reconstruction in a non-invasive way for specialists or for dissemination aims. The virtual sculptural reconstruction process starts usually from the 3D survey of real fragments, and then continues by integrating missing parts with 3D modelling techniques by means of source evaluation. Along with primary data sources (reality-based model), secondary data sources (photos, drawings and 3D models of similar sculptures) can be directly used in the reconstruction process. This approach has a double advantage of making the reconstruction activities easier and less arbitrary, contributing to a decrease in the degree of uncertainty for the sculptural reconstruction work, also thanks to many iconographic comparisons to ancient copies. Moreover, virtual reconstruction can be easily visualized alongside a scalable rendering system using open-source Web3D apps and platforms, accessing information, 3D models and descriptions in order to enhance the experience of artworks. Inspecting theoretical and technical approaches, this work aims at establishing how primary and secondary data sources can be effectively used in sculptural reconstruction workflows, and how 3D outputs can be applied to implement digital sculptural heritage exploitation for museums and cultural institutions. The statues of Aesculapius and Hygeia from the sanctuary of Isis in Lilybaeum (Marsala, Italy) were chosen as a case study.

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“…Peculiar studies and design activities involve seismic preservation and monitoring, as demonstrated in [3]. Simulations for structural integrity are also increasing their role: besides the architectural field, original applications were carried out to evaluate stability of many statues such as the roman equestrian bronze of Marco Aurelio [4] or the imperial marble statue of Alba-la-Romaine (France) [5]. This work also demonstrates that many different CAD investigations may be provided starting from digital acquisition, such as measurement report and collection [6] and posture restoration.…”

Section: Introductionmentioning

confidence: 99%

Design of the New Inner Frame for the Vittoria Alata di Brescia: How Engineering Design May Support Ancient Bronze Restoration

Bici¹,

Brini²,

Campana³

et al. 2021

Lecture Notes in Mechanical Engineering

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Mechanical design and engineering can support projects with highadded value in the Cultural Heritage field, such as restoration of artefacts like statues and architectonical decorations. Many examples have been carried out, along the recent past, in the field of ancient bronze restorations (as for Marco Aurelio, Satiro Danzante di Mazara del Vallo and Principe Ellenistico). Engineering design techniques help the assessment of structural problems through physical measurements and FEA simulations; the digital acquisition of the surfaces represents a fundamental base for CAD modelling, and the inner frame design helps for guaranteeing stability and manoeuvrability requirements for transport and exhibition. Workflow peculiarities and requirements to accomplish the restorers' activities and investigations may highlight best practices and rules. The design of the new inner frame of the Vittoria Alata of Brescia, an ancient roman bronze statue, represents a recent example of this kind. Its design workflow was provided in the loop of the restoration program, and it was assessed considering structural integrity, surfaces protection, inner inaccessibility, and dimensions. The solutions adopted are the result of a collaborative process with restorers to evaluate each proposed concept, in compliance with the studies and the constraints highlighted during the investigations. CAD-CAE tools applied starting from the 3D acquisition, helped the development and its verification, reducing the efforts during the manufacturing phase and final set-up. This paper aims to discuss the obtained result demonstrating how structural analysis and mechanical design anchored to 3D acquisitions may help restoration of bronze statues.

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A complete methodology for the mechanical diagnosis of statue provided by innovative uses of 3D model. Application to the imperial marble statue of Alba-la-Romaine (France)

Cited by 29 publications

References 32 publications

Point Cloud Exploitation for Structural Modeling and Analysis: A Reliable Workflow

Point Cloud Exploitation for Structural Modeling and Analysis: A Reliable Workflow

The Virtual Reconstruction of the Aesculapius and Hygeia Statues from the Sanctuary of Isis in Lilybaeum: Methods and Tools for Ancient Sculptures’ Enhancement

Design of the New Inner Frame for the Vittoria Alata di Brescia: How Engineering Design May Support Ancient Bronze Restoration

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