The acoustic impedance method is mainly used to detect the honeycomb bonded structure of aluminum single skin and skin plus backing plate. It can detect debonding defects in structural parts, but cannot detect mechanical adhesion defects, that is, two unbonded objects whose interface is a tight debonding defect with no air gap. This standard is applicable to the following column structures: Honeycomb lattice side length L≤5 mm, honeycomb sandwich upper plate thickness t is 0.3~1.5 mm
HB 6107-1986 history
1986HB 6107-1986 Acoustic resistance detection of metal honeycomb bonded structure