超声波速分析及首波幅度分析方法在石质文物裂隙检测中的应用

The Applications of the Ultrasonic Velocity Analysis and Initial Wave Amplitude Analysis Methods on the Fracture Testing of the Stone Cultural Relics

内部裂隙发育是威胁石质艺术珍品长远保存的最具破坏作用的病害类型,了解石刻的裂隙发育情况,尤其是其在石刻内部的发育情况,对研究制订石刻的保护措施有很大的指导意义和参考价值。波速分析及首波幅度分析在形状规则的石质文物裂隙位置的超声检测中具有方法简便,直观性强的优势。本次检测使用数字化非金属超声检测仪,采用网状布点的方式,通过波速分析及首波幅度分析,对乾陵述圣纪碑内部裂隙发育进行了超声检测,确定了其内部的裂隙位置,为保护方案的制定提供了有力的数据支持。

Internal fracture development is the most destructive disease threatening the long-time preservation of the stone art masterpieces. To understand the status of the fracture development, especially the internal fracture development of the stone sculptures, has significant direction meanings and reference values. The ultrasonic velocity analysis and initial wave amplitude analysis methods have advantages of convenience and intuitiveness in the ultrasonic testing of the internal fractures of the stone cultural relics with regular shapes. We selected nonmetal ultrasonic detector to do the ultrasonic testing to the internal fractures of the Shu ShcngjiBci （Eulogy Stele of Emperor Gaozong of the Tang Dynasty） erected at Qianling Mausoleum with grid distribution point method; through the velocity analysis and initial wave amplitude analysis, the internal fractures of the stele were located and powerful data support was provided for the designing of the preservation plan.