Material characteristics and deterioration evaluation for the 13th century Korean stone pagoda of Magoksa temple

Jo, Young Hoon; Lee, Chan Hee; Chun, Yu Gun

doi:10.1007/s12665-011-1301-8

Cited by 21 publications

(10 citation statements)

References 11 publications

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“…In a quantitative analysis of the shape difference between the virtual restoration model and the nal design mock-up of the head, the volume of the virtual restoration model was measured as 461 cm 3 and the volume of the design mock-up that was assembled on the original stone Buddha statue was measured as 437 cm 3 (Fig. 10a).…”

Section: Design Mock-up and Assembly Simulationmentioning

confidence: 99%

“…Cultural artifacts are often damaged by exposure to natural or arti cial environmental factors, which might lower their historical value or signi cance [1][2][3][4]. Traditionally, functional repair and aesthetic restoration are undertaken to recover the original form of damaged cultural artifacts [5,6]; recently, various conservation methods using advanced technologies and new materials are being applied in the process of restoring damaged cultural artifacts [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

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Non-contact restoration of missing parts of stone Buddha statue based on three-dimensional virtual modeling and assembly simulation

Hong

et al. 2020

Preprint

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Three-dimensional (3D) digital technology is one of the most essential conservation methods that complements the traditional technique of the restoration of cultural artifacts. In this study, 3D scanning, virtual restoration modeling, and 3D printing were used as a non-contact approach for the restoration of a damaged stone seated Bodhisattva (stone Buddha statue). First, a three-dimensional model with an average point density of 0.2 mm was created by integrating the fixed high-precision scanning of the exterior and the handheld mid-precision scanning of the interior excavated hole. Through a 3D deterioration map of the stone Buddha statue, the area of the missing parts was measured as 400.1 cm 2 (5.5% of the total area). Moreover, 257.1 cm 2 (64.2% of the missing part area) of four parts such as the head, the surrounding area of the Baekho, the right ear, and the right eye, for which symmetry was applicable for modeling or there could be ascertainable historical evidence for the total missing parts, was selected for restoration. The virtual restoration of the missing parts of the stone Buddha statue was performed using a haptic modeling system in the following order. First, the location of the three fragments detached from the head was determined. Next, the reference model was selected, and its symmetrization and modification with respect to the original were conducted. Also, estimation modeling and outer shape description were performed through historical research and consultation with experts. The created virtual-restoration model’s (461 cm 3 ) heuristic-based assembly suitability was verified by design mock-up printing and digital–analog simulation. In particular, to address the assembly interference, the interface surface was modified and reprocessed several times. Accordingly, the final design mock-up’s volume size was decreased by 5.2% (437 cm 3 ). Photopolymerization 3D printing technology was used for the actual restoration of the stone Buddha statue and the layer thickness of the material used was set as 0.10 mm considering the surface roughness. Finally, the surface of the printed output was colored to prevent yellowing and joined to the missing part of the stone Buddha statue. This study presents a great case to shift from the traditional manual-contact method to the contactless digital method for the restoration of artifacts and is expected to largely contribute to increasing the usability of digital technologies in the restoration of cultural artifacts.

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Section: Design Mock-up and Assembly Simulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Non-contact restoration of missing parts of stone Buddha statue based on three-dimensional virtual modeling and assembly simulation

Hong

et al. 2020

Preprint

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“…암석의 강도와 물성을 측정하는 방법에는 대표적으로 파괴를 동반하는 압축강도 시험과 비파괴방법인 초음파 측정이 있다 (Vishnu et al, 2010) (Sharma and Singh, 2008). 특히 이 방법은 현장 적용성과 기기적 내구성이 뛰어나 석조문화유산의 풍화도 평가에 널리 사용되고 있으며 (Lee et al, 2011;Jo et al, 2012;Fort et al, 2013), 최근에는 손상도 모니터링을 비 롯한 보존처리 지침에도 활용되고 있다 (Guadagnuolo et al, 2014).…”

Section: 서 론unclassified

Establishment of Ultrasonic Measurement Method for Stone Cultural Heritage Considering Water Content and Anisotropy

Jo¹,

Lee²

2014

Journal of the Korean Conservation Science for Cultural Propert

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This study was focused on measurement methods for stone cultural heritages by analyzing Ultrasonic (P-wave) velocity variations according to the water content and anisotropy of rocks. As a result of analyzing of rock properties, the water content and saturation degree were rapidly changed at the beginning of drying and then showed exponential curve which their rates of change gradually decreased. However, P-wave velocity and its rate of change maintained constant values after natural drying of 10 hours. Therefore, the ultrasonic measurement for stone cultural heritages should be performed after natural drying of 10 hours considering the weather and moisture conditions. In addition, the highest values of anisotropy coefficient exhibited in granite and limestone, and indirect method was insensitive to anisotropy compared to direct method. However, all rocks remained anisotropy by indirect method. Accordingly, ultrasonic measurement considering various directions is required. The research results will contribute to customized non-destructive testing and precise diagnosis for lithological characteristics of stone cultural heritage.

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“…고되어 검증된 바 있다 (Kim et al, 2009;Jo and Lee, 2011;Jo et al, 2012 (Lee et al, 2006;Lee et al, 2010b;Lee et al, 2012).…”

Section: 손상도 정량평가unclassified

Conservation Treatment, Deterioration Assessment and Petrography of the Hongjimun Ogansumun (Five-arched Floodgates) in Seoul

Lee¹,

Kim²,

Lee³

et al. 2013

Journal of the Korean Conservation Science for Cultural Propert

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The Hongjimun Ogansumun (Five-arched floodgates) is composed mainly of biotite granite, pink feldspar granite and granodiorite that are very similar with granitic rocks around the Seoul. Main damage in the floodgates was gray, yellow and predominantly white discoloration on the surface of stone blocks. All floodgates showed more discoloration in the wall than ceiling, and there were growing stalactite on the ceiling. Scientific analyses determined that the white discoloring substrates were mainly calcite. Therefore, conservation treatment was carried out to remove the substrates by using dry cleaning, high pressure cleaning and chemicals. The floodgates have been restored to good state, but it is still significantly necessary to install drainage on the top of the gates.

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Material characteristics and deterioration evaluation for the 13th century Korean stone pagoda of Magoksa temple

Cited by 21 publications

References 11 publications

Non-contact restoration of missing parts of stone Buddha statue based on three-dimensional virtual modeling and assembly simulation

Non-contact restoration of missing parts of stone Buddha statue based on three-dimensional virtual modeling and assembly simulation

Establishment of Ultrasonic Measurement Method for Stone Cultural Heritage Considering Water Content and Anisotropy

Conservation Treatment, Deterioration Assessment and Petrography of the Hongjimun Ogansumun (Five-arched Floodgates) in Seoul

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