Experimental ultrasonic characterization of polyester-based materials for cultural heritage applications

Arciniegas, Andres; Martinez, L.; Briand, Arnaud; Prieto, Sophie; Serfaty, Sylvia; Wilkie-Chancellier, Nicolas

doi:10.1016/j.ultras.2017.06.011

Cited by 3 publications

(11 citation statements)

References 23 publications

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“…Indeed, these selected resins are representative materials commonly used in the reproduction of statues in the garden of Versailles Castle and more broadly in the construction of composite structures needing mechanical performance, waterproofness and compatibility with fillers at a moderate cost [2]. According to the literature, pure resins and composite samples are assumed to be isotropic homogeneous materials at the investigation scale [1,2,6]. The experiments were performed on 8 parallelepipedic samples (100 × 100 × 30 mm) with and without fillers.…”

Section: Experimental Technique 221 Materialsmentioning

confidence: 99%

“…The protocol used in this study was based on a classical study of interactions between homogeneous isotropic materials and ultrasonic waves [1,11]. For each sample, bulk waves were measured in order to calculate Young's modulus and the surface wave propagation was studied.…”

Section: Experimental Protocolmentioning

confidence: 99%

“…The bulk wave velocities were then measured in transmission mode using another similar transducer as a receiver. Rayleigh waves were generated using a 1 MHz broadband, vertically polarized shear contact transducer (13 mm diameter, Panametrics, [1,19]). In this case, the evolution of the wave over the surface was monitored using an OFV-505 vibrometer (Polytec GmbH, Waldbronn, Germany).…”

Section: Experimental Protocolmentioning

confidence: 99%

“…The Réunion des Musées Nationaux-Grand Palais, who has been producing resin reproductions of artworks, aimed to investigate the integrity of the composite materials used to replace original sculptures in historical monuments [1]. These composite materials, mostly known as artificial or engineered stones, consist of a polymer matrix (polyester or epoxy [2]) incorporating rock powder (e.g., marble or slate [3]).…”

Section: Introductionmentioning

confidence: 99%

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Monitoring of Engineered Stones Used in Artwork Reproductions: Mechanical Characterization by Laser Vibrometry

et al. 2023

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Many museums have been producing reproductions for several years to replace artworks weakened by outdoor exhibition. Among these, in order to imitate the original aesthetic, the French consortium Réunion des Musées Nationaux–Grand Palais has chosen to work from large-format marble sculpture molds to complex composite materials based on resins comprising mineral fillers. However, similar to the original works of art, these reproductions age and deteriorate due to constant outdoor exposure. For this reason, current research focuses on the preventive conservation and monitoring of the structural health of these reconstructed objects. The goal of this paper was to study the resin/mineral powder composite materials used to produce cultural heritage reproductions of sculptures. This work is oriented toward a comparison of the mechanical properties of composite materials used in the replacement of cultural heritage sculptures (for instance, in the Garden of the Palace of Versailles or the Rodin Museum). The objectives were to first characterize the physical and mechanical properties of these materials in order to identify the most suitable material for cultural heritage reproduction, and secondly, to propose a method with minimal contact that obtained equivalent information as analyses performed with conventional ultrasonic techniques. These nondestructive evaluation techniques could be used for laboratory and in situ analyses. Samples of different polymer/mineral powder filler compositions were analyzed by compressional, shear and surface waves, generated by a 1 MHz center frequency ultrasonic transducer. Firstly, the measurements made it possible to evaluate the velocities of the bulk acoustic waves and extract the Young’s modulus of each tested material. Secondly, in order to have minimal contact with the analyzed structure, a laser interferometry system was used to detect waves at the surface and follow their propagation. The results clearly showed the possibility of using this technique to extract mechanical characteristics of composite materials, allowing for selection of material for the reproduction of large-format statues. For different types of polymer resins, the ability of ultrasonic analysis to track the impact of rock powder (marble or slate) on the mechanical properties of these synthetic materials was clearly observed, proving that this technique holds promise for monitoring the structural health of large-format artwork.

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Section: Experimental Technique 221 Materialsmentioning

confidence: 99%

Section: Experimental Protocolmentioning

confidence: 99%

Section: Experimental Protocolmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Monitoring of Engineered Stones Used in Artwork Reproductions: Mechanical Characterization by Laser Vibrometry

et al. 2023

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“…In the field of stone sculpture conservation, mineral composites based on ceramic particles, are successfully being used since the 80's and 90's. The casting of artificial stones (mineral composites) arose and became very widespread since due to the need for solutions in the production of outdoor stone replicas to preserve stone sculptures in serious disrepair ( Arciniegas et al., 2017 ; Bazán et al., 2014 ; Plano, 2003 ). According to the literature several mortars and mineral filled resins have been mechanically, morphologically, and chemically analysed ( Kröner et al., 2016 ; Cerezo et al., 2014 ), but in the case of artificial metals there is still a lack of characterization studies in this field, even though their usage is growing.…”

Section: Introductionmentioning

confidence: 99%

Thermosetting composites based on bronze particles for archaeological and artistic metal heritage cloning

Culebras

Herrero-Cortell

Gómez

et al. 2018

Heliyon

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Artificial Metals are polymeric semi-metallic composites obtained by combining thermosetting resins with atomized metal powders in order to achieve composite materials capable of reproducing metals, even in a rusty or corroded condition. These composites provide a solution for the reproduction of archaeological artefacts, sculptures, and ornaments for the purpose of conservation.This work explores mechanical properties of three different resins bronze composites loaded with two different proportions of metal filler. The degree of conversion of the samples was measured by differential scanning calorimetry (DSC) and flexural tests were carried out to determine their mechanical performance. In addition, the samples were characterized by scanning electron microscopy (SEM) in order to determine the morphology of the samples at the microscale.

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Photoacoustic speckle pattern interferometry for detecting cracks of different sizes

Zhu,

Chen,

Zhou

et al. 2023

Opt. Express

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A system and method for non-destructive detection of cracks of different width and depths based on digital speckle interferometry coupled with pulsed laser excitation is introduced and tested. Based on photoacoustic effect, acoustic waves are induced onto the rear of the samples by pumping a pulsed laser beam on it. The generated mechanical wave propagates from the rear surface of the sample to the front while front surface is monitored by speckle interferometry. In order to acquire information about surface deformation, the front surface is illuminated by continuous wave laser and interference are imaged onto the camera as speckle images. After processing the produced fringe patterns, it indicates the presence and location of the cracks in qualitative way. In this study, the system and method mentioned above are validated by detecting medium density fiberboard with simulated cracks. The fringe patterns from areas with or without defects are compared and discussed. Besides, the system and method to distinguish and predict cracks sizes is proposed and validated.

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Experimental ultrasonic characterization of polyester-based materials for cultural heritage applications

Cited by 3 publications

References 23 publications

Monitoring of Engineered Stones Used in Artwork Reproductions: Mechanical Characterization by Laser Vibrometry

Monitoring of Engineered Stones Used in Artwork Reproductions: Mechanical Characterization by Laser Vibrometry

Thermosetting composites based on bronze particles for archaeological and artistic metal heritage cloning

Photoacoustic speckle pattern interferometry for detecting cracks of different sizes

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