Modification of ceramic shell facecoat for inhibition of sand burning defect on DZ22B directionally solidified blades

Mechanism and prediction models for interfacial shear separation of claddings excited by Love waves

“…f 0 ½s À1 (1) . 1 s (1) 23 (x 2 = h (1) ) According to (50), the critical condition for interface shear separation is as follows.…”

“…It is of more practical significance to study the interfacial shear delamination of the single cladding. The expression of interface shear stress s (1) 23 x 2 = 0 ð Þ of single cladding structure excited by Love waves could be obtained by using the above method (see Appendix A).…”

“…" ð Àk (2) T Àk (1) T MNq (1) tan q (1) h (1) À Á e isx 1 ds + ð k (1) T k (2) T MNq (1) tan q (1) h (1) À Á e isx 1 ds # ðA:41Þ…”

“…" ð Àk (2) T Àk (1) T M N + 1 ð Þq (2) e isx 1 ds + ð k (1) T k (2) T M N + 1 ð Þq (2) e isx 1 ds # ðA:42Þ…”

“…In practice, some thin claddings are often accidentally adsorbed and/or burned on the structure surface, such as ice adsorption layers on the surface of wings and rotors, frost deposition layers on heat transfer plate, and sand burning layers on the surface of the casting, and others are actively coated on the structure surface, such as multiple coatings for metal cutting tools. 1,2 It has been proved by experiments that both the icing and frosting could be separated from structural surfaces by the mechanical effect of ultrasonic wave. 3,4 On the other hand, researchers have been plagued by coating peeling at certain frequency bands of the vibration.…”