• Defense and Technology
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• no.7 s.233
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• pp.60-69
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• 1998

독일 HDW조선소의 Bonn 지사장으로 근무중인 Udo Ude씨는 209급 잠수함 해외수출 성공사례를 다음과 같이 분석하였다. -1970년 독일해군용 206급 계약시 잠수함을 해군에 인도하기 전까지의 모든 과정을 조선소가 직접 책임지고 수행토록 하는 General Contractor Principle(총괄계약자 원칙)에 의해 확보된 기술인력, 자재/장비 공급원 발굴, 축적된 장비간 연동과 체계통합 기술 및 경험 –대부분의 탑재 장비를 국내 방산업체로부터 조달할 수 있는 탄탄한 국내 기술력 –매 신규사업마다 성능향상을 위한 과제선정 및 계속적인 연구 –정부 소유 시험시설 및 장비 활용과 제반 기술관리에 있어서 민.관.군의 적극적이고 긴밀한 지원체제 구축 이러한 성공사례 분석에 독일 현지에서 느낀 필자의 경험소감을 추가하면 다음과 같다. –규정을 잘 지킬 뿐만 아니라 타인의 잘못을 즉시 일깨워 주는 준법정신 및 고발정신 -2-3년 후의 휴가계획까지 수립하여 준비할 정도의 처절한 사전계획 및 준비정신 –불결한 것과 게으름을 참지 못하는 청결성 및 근면성 –누구든지 원하면 경제적인 부담없이 평생동안 공부할 수 있는 교육제도 –게르만족이 우월하다는 내면적 자부심 –작은 일이라도 모여서 토의하고 결론을 도출하기 좋아하는 공동체 의식 –약속을 철저히 지키는 정직성 –과거의 사실이나 유물을 철저히 보존하는 역사의식 –모든 분야에서 철저하게 운용되는 Meister(장인)제도 등

• Conservation Science in Museum
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• v.3
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• pp.9-13
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• 2001

Being entrusted with the conservation of Kyongju National Museum, the conservators did a conservation treatment on the iron helmet found in the wooden coffin excavated from No. 35 Tomb in Ga-Zone, Okseong-ri, Pohang, Kyongbuk Province. They reported their work ranging from the collection of and conservation treatment on the artifacts found at the excavation site to the restoration of them to the originals.

• SUVANNABHUMI
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• v.2 no.2
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• pp.69-82
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• 2010

이 글은 미얀마의 고대 도시에서 축조된 방어장벽의 건축물에 나타나는 신앙문화에 관한 연구이며, 여러 고대 도시, 특히 쀼족(Pyu)의 도시였던 베잇따노(Beikthano), 하링(Halin), 떠예킷떠야(Thayehkittaya, Srikshetra) 등지에서 발굴된 유물, 유적을 분석하였다. 이와 함께, 미얀마의 고대 도시에 형성된 전통적 신앙세계를 해명하는데 중점을 두고자 한다. 미얀마에서는 성문, 성벽, 요새, 또는 파고다를 건축할 때에 신앙적 요소가 반드시 개입되었다. 건축물의 축조 토지의 선택에 있어서나 건축물 용도에 따른 재앙의 예방의 목적을 구현하기 위하여 신앙체계가 적용되었다. 특히, 방어 장벽(예를 들어, 성벽, 성문 등)에서 나타나는 불교경전이나 쇠못이 박힌 철판 및 각종 힌두신과 낫(정령)의 조상(彫像)은 그러한 신앙적 차원에서 도입되었던 것이다. 결론적으로 미얀마의 고대 도시에 있어서 방어 장벽의 구조물에서도 전통신앙과 힌두교 및 불교가 혼합된 신앙체계가 엿보이며, 나아가 쀼 왕국에 형성된 여러 고대 도시에서 서로 유사한 물질문화와 신앙체계가 널리 존재하고 있음이 밝혀졌다.

• Journal of Conservation Science
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• v.20
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• pp.67-80
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• 2007

Icheon Seolbong fortress is located in Saum-dong, Icheon, Gyeonggi-do Province that its date is founded as 4th century of Bakjae dynasty after excavation by Dankook university museum. Excavated artifacts show various kinds such as earthenwares, ceramics, metal artifacts and so on. Especially many iron artifacts were founded in where Bakjae earthenwares were found that it indicates iron artifacts were manufactured in Bakjae Dynasty. From 6 iron sickles, called Beollat and Millet, samples were taken to examine mircostructures and from the results used iron material, shape-forging, steel-making process, heat treatment were investigated. From this late 4th century Bakjae dynasty iron manufacture profess was established. From the result, different treatment were used in different area of the sickles according to the its use. Beollats were quenched in blade and it was used for special purpose that require Intensity. Millats did not have special treatment that it was used to cut rice plant and plant. Used material was steel, steel was previously made by certain steel-making process. It is formed to produce iron ware and the area where intensity is required heat treatment was employed to make it strong. From the investigation it is derived that iron ware manufacture process in Bakjae dynasty is steel making$\rightarrow$shape-forging$\rightarrow$and heat treatment.

• Journal of Conservation Science
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• v.27 no.2
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• pp.181-190
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• 2011

A precision measurement and digital image restoration of the 5th century's gilt bronze cap of Baekje dynasty, excavated from the ancient tomb of Andong, Goheung in 2006, was undertaken. The objective of the scanning is to preserve precise feature of the artefact in the form of digital data by embodying it in 3 dimensional space. Acquirement of the data has been undertaken in the following process : 3D scanning to obtain 3D shape and color information(original data photographing)-3D modelling(joining original data and restoring non-photographed or damaged area)-CG image production. Production of restoration CG image was based on joined shape of original data and each part's measurement on CAD. Non-photographed part and area of loss was restored referring actual measurement and research result of excavated cap from the 5th to 8th century. 3D image restoration is one of artefact restoration methods which restores artefact without risk. It is also undertaken with historical research. As result, this method can enhance aesthetic and academic value of the artefact by successful restoration.

• Journal of the Korean Applied Science and Technology
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• v.29 no.1
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• pp.108-115
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• 2012

Archaeological waterlogged woods found under the sea, in lakes, or in swamp environments are generally weak and fragile. If waterlogged wood materials were taken out of the water and left without modification, they would collapse and lose their original dimensions completely. Conservation is performed to replace the water with chemical agents and to give dimensional stabilization and durability. EDTA and PEG are the most commonly used in the preservation of wood. pH control-precipitation method is used for recovery of EDTA from waste fluid of archeological waterlogged wood conservation treatment. The black substance is eliminated from wood as Fe-EDTA complex are formed and EDTA is separated and precipitated from Fe-EDTA complexes at pH 2.68 or less. The result of analysis of the precipitated products and the commercial EDTA by FT-IR and FE-SEM showed that precipitated product by pH adjusted was not a type of Fe-EDTA complex, but pure EDTA. Waste fluid produced in PEG treatment shows the black color and has an offensive odor by organic matter extracted from wood. Color of waste fluid is decolored with oxidation reaction by peroxy hydrate. In FT-IR and SEM-EDX of PEG after freeze-drying process, no significant change of functional groups induced from oxidation is observed, and any metal ion does not exist in the solid PEG specimen. The molecular weight of PEG is measured using GPC and viscometry. Properties of PEG before and after preservation treatment, and after oxidation with $H_2O_2$ were not changed. Consequently, the peroxidation with $H_2O_2$ is a reasonable and simple method to decolor the used PEG solution.

• Korean Journal of Heritage: History & Science
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• v.54 no.2
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• pp.4-21
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• 2021

A stone mold from the Sabi period of Baekje was excavated at the western tombs in Neungsan-ri, Buyeo where there was a recent excavation survey (2016). It was believed and reported that such stone molds were used for copper needles during the early Iron Age; however, a close re-examination of the form revealed that they were used for bifid ornamental hairpins. Given its casting form, the stone mold of Neungsan-ri is estimated to have been used to make bifid ornamental hairpins in a ∩ shape, narrowing down toward the tip. It is considered an artifact of the Goryeo dynasty. The stone used to make the bifid ornamental hairpin mold of Neungsan-ri was chlorite-schist, the principal minerals of which include chlorite, amphibole, and talc. Similar rocks are in nearby Buyeo (Oesan-myeon), Cheongyang, Gongju, and Yesan. They are mainly found between Jiseon-ri, Oesan-myeon, Buyeo, Sucheol-ri, Yesane-up, and Yesan. Nearly 70 bifid ornamental hairpins from the Goryeo dynasty were excavated at Neungsan-ri, Buyeo and the surrounding areas. Among them, the bronze ones excavated from the tombs of Songguk-ri, Buyeo are estimated to have been made using this mold as they closely resemble the Neungsan-ri mold. Stone was likely the preferred material for molds to make bronze artifacts as it was easy to sink a die. Regarding the bifid ornamental hairpin cast excavated in Neungsan-ri, they obtained stones in nearby areas 20~50km from their location, made bronze artifacts, and distributed them to nearby sites during the Goryeo dynasty. These artifacts suggest that the casting technology of using a stone mold was still employed then.

• Journal of Conservation Science
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• v.26 no.4
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• pp.371-376
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• 2010

The great jar estimated in Proto-Three Kingdoms period was found at the site from Pyeongtaek Daechuri and the bonding traces from pieces destroyed when they were excavated are observed. Therefore this study would figure out the components of bonding material used in great jars by optical microscope, FT-IR, py-GC/MS and the kind of textile attaching to great jar by transmitted light microscope. As a result of optical microscope for the cross-section, black material is uniformly applied between a piece of jar and the part of bonding and the textile line are observed. Black bonding material is resulted in korean rhus lacquer by FT-IR and py-GC/MS and the kind of textile is identified as hemp by transmitted light microscope. Materials for repairing archaeological objects are hardly known causing little information, but this study proves that the bonding material had used lacquer for great jars before Proto-Three Kingdoms period. Therefore if ancient bonding materials are systematically analysed in the further studies, it would be significant help for studying bonding and restoration materials of ancient objects.

• Conservation Science in Museum
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• v.14
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• pp.23-28
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• 2013

This paper aimed to show the whole conservation process of the human shaped terra cotta mask that was excavated from one of construction sites at Jungcheon-ri, Geumsan-myeon, Jinju. This mask was X-rayed to get the correct making techniques and there are 4 holes on the top of the head and each diameter of the 3 holes is exact and the other hole is different from the three. The long and sharp shape of the nose is in trapezoid which was separately made with clay and put on (the face). It's found that there are round grooves each around upper and down lips. (upper in length: 10mm, down in length: 6 mm). All restoring materials and adhesives used for restoration to associate each piece are reversibility materials. According to a few points on buried bones of animals distributed around the sites, holes and grooves on the top of the head, ears and teeth to wear something, it academically presumes that this mask could be possibly used for the group ritual. Especially, the whole procedure from excavation to scientific conservation process resulted to have a special exhibition to give the public new eyes how the exhibition realizes to the public.

• Journal of Conservation Science
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• v.29 no.3
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• pp.287-296
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• 2013

Excavated iron objects are preserved in stable condition through processes of conservation treatment because they are found in the form of various corrosion products. However, the conservation treatment leads to re-corrosion over time and accordingly, iron objects can be severely damaged, and therefore fundamental measures need to be prepared to control it. In this study, the types and characteristics of corrosion products were scientifically analyzed according to the re-corrosion of iron artifacts. In addition, the stability of the corrosion products was evaluated by exposing the standard samples under the re-corrosion environment. Re-corrosion proceeded with weeping in reddish brown on the cracks of iron artifacts. Weeping was detected akagan$\acute{e}$ite had a low hydrogen ion concentration and high chloride ion. The selection of standard sample goethite, lepidocrocite, hematite, and magnetite, were evaluated corrosive by weeping. After the samples were immersed in HCl(pH 1), $H_2SO_4$(pH 1), $H_2O$(pH 6) solution, they had been maintained for 180 days in relative humidity of 20%, 50%, 80% to investiage the changes of chemical components. As a result of analysis, the changes of chemical components were not showed in goethite, lepidocrocite, and hematite. But magnetite was changed to lepidocrocite in solution including chloride ion($Cl^-$) and to goethite and lepidocrocite solution including sulfuric acid($SO{_4}^{2-}$). Results of the study, in the case of magnetite known as s stable corrosion compound, it was identified the corrosion of magnetite occurs by corrosive ions, which means weeping generated in the iron artifacts can corrode magnetite as well as base metal.