Fiber or fiber tapers are the material of choice when studying the mechanical properties and intrinsic load-response of glasses at highest sample quality and experimental repeatability. However, surface curvature strongly complicates meaningful analysis using local (sharp) contact probes. Wedge-indentation provides a means for overcoming some of the problems of normal indentation on curved glass surfaces. In particular, it enables testing in comparably homogenous, two-dimensional stress fields, avoiding the effects of the sharp edges of pyramidal indenters and facilitating auxiliary in situ or ex situ structural mapping, for example, by vibrational spectroscopy. Adjusting the wedge’s opening angle, length and orientation relative to the fiber surface enables highly reproducible studies of material deformation, surface crack initiation, and effects of fiber anisotropy.

在研究具有最高样品质量和实验可重复性的玻璃的机械性能和固有载荷响应时，纤维或纤维锥度是首选材料。但是，表面曲率使使用局部（尖锐）接触探针的有意义的分析变得非常复杂。楔形压痕提供了一种解决弯曲玻璃表面正常压痕问题的方法。特别是，它可以在相对均匀的二维应力场中进行测试，避免了锥形压头尖锐边缘的影响，并有助于辅助原位 要么 异地结构映射，例如通过振动光谱学。调整楔形物相对于纤维表面的张开角度，长度和方向，可以对材料变形，表面裂纹萌生以及纤维各向异性的影响进行高度可重复的研究。