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NTIS 바로가기보존과학회지 = Journal of conservation science, v.30 no.4, 2014년, pp.467 - 480
조영훈 (공주대학교 문화재보존과학과) , 이찬희 (공주대학교 문화재보존과학과)
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 beg...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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문화유산 초음파 측정법의 표준으로 사용되는 ISRM(1978)과 ASTM D2845-08(2008) 규격의 한계는? | 이로 인해 암석역학 분야의 ISRM(1978)과 ASTM D2845-08(2008) 규격에는 암석의 함수율과 이방성을 비롯하여 적용범위, 탐촉자 배치, 측정위치 및 강도추정 등을 고려한 초음파 측정법 기준을 표준화하는데 노력하고 있다. 그러나 이러한 규격은 석조문화유산에 적합한 기준도 있으나 문화유산이라는 특수성 때문에 현장 측정에 필요한 요건들을 충분히 갖추고 있지 않다. | |
암석의 강도와 물성을 측정하는 대표적인 방법은? | 암석의 강도와 물성을 측정하는 방법에는 대표적으로 파괴를 동반하는 압축강도 시험과 비파괴방법인 초음파 측정이 있다(Vishnu et al., 2010). | |
석조문화유산의 초음파 측정의 어려운 점은? | 그러나 석조문화유산의 초음파 측정은 대상 유산의 암석학적 특성 및 형태, 외부 환경, 탐사기의 설정, 운영자의 숙련도 등 다양한 요인들에 의해 영향을 받기 때문에 해석에 어려운 점이 있다(Lama and Vutukuri, 1978). 특히 암석학적 특성(암종, 조직, 입도, 밀도, 공극률, 함수율, 이방성)과 관련된 다양한 인자 중 함수율과 이방성은 측정 환경 및 방법에 따라 민감하게 반응하므로 신뢰도 높은 데이터를 확보하기 위해서는 초음파와의 상관관계를 명확히 이해할 필요가 있다(Kahraman, 2007). |
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