Fig. 2From: Near field effect on elasticity measurement for cartilage-bone structure using Lamb wave methodRelationship between the amplitude and time at point 1, 3 and 5 in experimental LWM tests (two layered structure, loading frequency is 2000 Hz, and the receiver distances xi of point 1, 3 and 5 were 2.5, 3.5 and 4.5 cm respectively)Back to article page