After almost 200 years of exposure, the monuments of General Scharnhorst and Bülow have been analysed by means of ultrasound. Both sculptures are made of Carrara marble, both sculptures have been exposed to the same environmental influences and both sculptures are, based on the results of the ultrasonic measurements, in alarming conditions. This statement can be made because of the data of three different measurement investigations within the last 12 years. In this short exposure time, the already low velocities have been reduced by 16.2% and 14.7%. The very low average velocity of 2.8 km/s for the sculpture of General Bülow and a slightly higher average velocity of 3.2 km/s for the Scharnhorst sculpture indicate that both sculptures are in a poor condition, even though a protective winter shelter has been used since 2004. Comparing tomographic velocity measurements performed in 2006 with the measurements made in 2018 was possible and showed that even areas with a thickness up to 90 cm show alarming low ultrasonic velocities down to 2.6 km/s. Even if the circumstances for both sculptures have been the same, they differ in their weathering state. The careful and transparent documentation of all measurements was in this context the most important aspect for the comparative studies. Irregularities in their weathering behaviour of the two statues can be distinguished, allowing an in-depth analysis of the deterioration of the marble.

中文翻译：

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柏林比洛将军和沙恩霍斯特将军的大理石雕塑：暴露12年后的风化状态的比较，非破坏性分析

经过将近200年的暴露后，已经通过超声对沙恩霍斯特将军和比洛将军的遗迹进行了分析。这两个雕塑都是用卡拉拉大理石制成的，这两个雕塑都受到了相同的环境影响，并且根据超声波测量的结果，这两个雕塑都处于令人震惊的状况。可以基于过去12年中三个不同的测量调查的数据来作出此声明。在如此短的曝光时间内，原本就很低的速度分别降低了16.2％和14.7％。布洛将军（GeneralBülow）雕塑的平均速度非常低，为2.8 km / s，沙恩霍斯特（Scharnhorst）雕塑的平均速度稍高，为3.2 km / s，表明这两个雕塑都处于不良状态，即使使用了防护性的冬季避难所自2004年以来。将2006年进行的断层扫描速度测量与2018年进行的测量进行比较是可能的，结果表明，即使厚度最大为90 cm的区域也显示出惊人的低至2.6 km / s的超声波速度。即使两个雕塑的环境相同，它们的风化状态也不同。在这种情况下，所有测量的仔细而透明的记录是比较研究的最重要方面。可以区分两个雕像在风化行为方面的不规则性，从而可以对大理石的劣化进行深入分析。即使两个雕塑的环境相同，它们的风化状态也不同。在这种情况下，所有测量的仔细透明的记录是比较研究的最重要方面。可以区分两个雕像在风化行为方面的不规则性，从而可以对大理石的劣化进行深入分析。即使两个雕塑的环境相同，它们的风化状态也不同。在这种情况下，所有测量的仔细而透明的记录是比较研究的最重要方面。可以区分两个雕像在风化行为方面的不规则性，从而可以对大理石的劣化进行深入分析。