Method for suppressing / detecting fatigue crack growth and suppressing / detecting fatigue crack growth sheet

摘要

Problem to be solved: to make the wet corrosion environment simple and locally limited in the field, and by the wedge effect of the corrosion product produced, it was possible to effectively suppress the crack progress in the crack tip part which was difficult in the past. Further, a method of suppressing / detecting a fatigue crack which can be easily detected by visual inspection and / or a preventive crack / detection sheet of a fatigue crack are provided.Opening 3a of the fatigue crack 3 of the metallic base material 2Bring water to the water holding materialThe water content 10 is covered with a seat means 20 for preventing water drying.By the water and the air of the water substance 10 and the oxygen supplied from the oxidizing agentThe interior of the fatigue crack 3 is held in the wet corrosive environment to produce the corrosion product of the base materialThe wedge effect of the inflatable corrosion products suppresses the progress of the fatigue crack 3 and / or discoloration by corrosion products of the matrix 2 to detect the fatigue crack 3.Diagram