Strength Analysis for the Adhesive Layer on the Basis of Intensity of Singular Stress

Stress intensity factor for small edge crack in interfacial singularity region

“…To evaluate the intensity of the singular stress field near the interface edge, Munz and Yang [3] proposed the numerical extrapolation method for single stress singularity problems, and Xu et al [4] developed the numerical method to determine both multiple stress singularities and the related stress intensity coefficients by using conventional numerical results. Noda et al [5,6] showed the accurate method to analyze the intensity of the singular stress at the interface edge by using the stress ratio at the interface edge calculated by the finite element method. Moreover, Noda et al [7][8][9][10] reported that the stress intensity factor of the small interface crack in bonded materials, as well as the intensity of the singular stress at the interface corner, is effective for evaluating the adhesive strength.…”