Delamination is a common defect in drilling and milling of CFRP, where the ply is either peeled-up or pushedout by axial force and bending and it occurs when the interlaminar stress exceeds the interlaminar bonding strength. The delamination damage is generally quantified with the well-established delamination damage factor (𝐹 𝑑 ) and the readers are referred to relevant review paper for more detailed information . The delamination damage not only compromises the assembly tolerance but also deteriorates its performance and reliability under static/fatigue loading conditions . As a result, drilling-induced delamination is regarded as the most critical form of damage in CFRP machining, contributing to up to 60% of part rejections during final assembly . This underscores the need for accurate prediction and control of delamination during the machining process.