Crack Identification on Reinforced Concrete Slabs Using Modal Strain Energy Method
摘要
Damage identification in plate-like structures considering the nonlinear behavior of the material is essential in the civil engineering field. This study proposes a procedure based on the modal strain energy (MSE) change to detect crack’s occurrence and development on the reinforced concrete slabs subjected to uniform loads. The MSE values are calculated from mode shape data acquired from modal analysis by ANSYS software. The slab’s cracks occur and develop according to the increase of the load. A reinforced concrete slab subjected to uniform loads is used to verify the proposed procedure's effectiveness with several damage levels. The outcomes indicate that the proposed procedure identifies the crack's location even if the structure works in the nonlinear phase.