Wear resistance and anti-friction of expansion cone with hard coating

A new finite element model for vibration analysis of a coated blisk with variable coating thickness

“…Even the coating thickness is 0, the LI-SOLID element can also be used here by setting the material parameters of the first, second, fourth and fifth layers to 0. Note that for the variable coating thickness, it only needs to change the thickness values of each layer in equation (12) under local coordinate, which do not need to regenerate the finite element mesh manually. In this way, if the coating thickness is random, the method is also suitable, and the efficiency of the solution can be significantly improved due to avoiding a re-meshing process.…”

“…When the coating thickness is changed, the new stiffness and mass matrices of blisk can be resolved by the LI-SOLID element. Note that here by using the LI-SOLID with the virtual layers as shown in Figure 4(b), the finite element mesh does not need to regenerate, and we only need to change the thickness values of each layer in equation (12) under local coordinate. Then, the method described in Analysis method of coated blisk section can be used to obtain the forced response.…”

“…10 These methods are effective in increasing the resistance of blisks against vibrations. At present, a new passive surface treatment technique using hard-coating damping has been presented due to its perfect performance to improve surface wear resistance by increasing surface hardness [11][12][13] and reduce the vibration stress of structures in high temperature and corrosion environment. 14,15 Even the coating spraying technology could also have an effect on the coating damping property, and the smart adhesion 16 could be used to improve its performance when microscopic characteristics of coating are studied.…”

Passive Vibration Reduction Analysis of the Mistuned Blisk Deposited Hard Coating Using Modified Reduced-Order Model

“…Hard coating was a kind of coating materials prepared by the metal substrate, the ceramic substrate and their mixtures, and it was mainly used as the surface treatment which makes the composite structures have special and superior performance, such as the anti-friction coating (or anti-wear coating) [14,15], the thermal barrier coating [16][17][18] and the anti-corrosive coating [19][20][21], etc. In recent years, the significant mechanical damping capacities of hard coating generated by the friction energy dissipation of internal particles of coating materials [22] have been found by a number of researchers.…”

Application of the hard-coating damper on the mistuned blisk for passive vibration reduction

“…Hard coating was a kind of coating materials prepared by the metal, the ceramic or their mixtures. Traditionally, it has been used as surface treatment which gives the structures special and superior performance, such as wear resistance, 16,17 hightemperature resistance, 18,19 anti-friction 17,20 and anti-corrosion. [21][22][23] In recent years, the significant damping capacities of hard coating produced by internal particles friction have been found by some scholars.…”