Antisymmetric flexural (ASF) modes are guided acoustic waves propagating along a wedge-shaped wave guide with
their energy tightly confined near the tip. Motivated by the potential application of employing ASF modes in inspecting
defects in machine tool blades with sharp edges, this study is focused in investigating the behaviors of ASF modes
propagating along the wedge tips with defect. More specifically, we investigate the quantitative behaviors of ASF
reflection and transmission while the ASF modes interact with a defect along a wedge tip. This investigation includes
numerical simulations with finite element analysis and experimental measurements with a laser ultrasound technique.
Defect parameters including depth and width are discussed regarding to their influences on the reflection coefficient (RC)
and transmission coefficient (TC). The RC is found to increase as the ratio between the defect depth and the ASF
wavelength increases, while the TC decreases.