Crack assessment in marble sculptures using ultrasonic measurements: Laboratory tests and application on the statue of David by Michelangelo
Crack assessment in marble sculptures using ultrasonic measurements: Laboratory tests and application on the statue of David by Michelangelo
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DOI：
10.1016/j.culher.2015.02.005
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发表时间：
2015-11-01
影响因子：
3.1
通讯作者：
Lolli, Antonio
中科院分区：
文献类型：
--
作者：
Pascale, Giovanni;Lolli, Antonio
大型大理石雕像可能会遭受严重的骨折，由于重量和形状产生的应力状态，通常很薄，很清晰。裂缝通常由表面开裂引发。因此，通过定期进行无损检测来评估明显裂缝的严重程度非常重要。超声波方法非常适合于此目的。本文介绍了一项研究活动，完成了在提高应用超声波方法检测大理石元素的裂纹深度。两种不同的技术。在实验室中对大理石标本进行了操作验证后，这些方法已被应用于对米开朗基罗的大卫像（西方艺术最著名的杰作之一）的诊断研究。所获得的结果使我们能够提供有关损坏严重程度的有用信息。对于左腿和“broncone”（左腿所在的假树干）中存在的一些更明显的裂缝，深度估计具有良好的可靠性。最大深度估计约为20 mm。在其他区域，检测到大理石的扩散裂纹或表面劣化。(C)2015年Elsevier Masson SAS。All rights reserved.
The large marble statues can suffer serious fractures, due to the stress states originated by the weight and the shape, often thin and articulated. Fractures are often triggered by surface cracking. For this reason, it is important to assess the severity of the apparent cracks, by performing periodic nondestructive surveys. The ultrasonic method is well suited for this purpose. This paper presents a research activity finalized at improving the application of the ultrasound method to the detection of crack depth in marble elements. Two different techniques are presented. These, after having been validated in the laboratory by operating on marble specimens, have been applied to a diagnostic investigation of the Michelangelo's David, one of the most famous masterpieces of Western art. The results obtained have allowed us to provide useful information about the severity of the damage. The depth was estimated with good reliability for some of the more evident cracks present in the left leg and in "broncone", the false tree trunk on which the left leg rests. The maximum depth is evaluated at approximately 20 mm. In other areas, diffuse cracking or surface deterioration of the marble have been detected. (C) 2015 Elsevier Masson SAS. All rights reserved.