Acoustic Imaging of Joined Surfaces
نویسندگان
چکیده
In this paper, the results of imaging experinents with the interfacial region~ of representative solid material joints, ~1ng a transmission-type scanning acoustic microscope operating at 150 HHz, are reported. Voids and flaws in specially made joints as well as production-line silicon solder bonds (die bonded headera' have been detected using the transmission~de of operation of the microscope. Acoustic velocity of epoxy in an organic adhesive bond has also been measured usinq a combination of transmissionand interference-mode of eperation.
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