RT Journal Article
ID 2c7196ca3c918323
A1 Yunus, Mohammed
A1 Alsoufi, Mohammad S.
T1 EXPERIMENTAL INVESTIGATIONS ON PRECISION MACHINING OF THERMAL BARRIER COATINGS AND APPLICATION OF THE GREY RELATION APPROACH TO DETERMINE THE OPTIMUM PROCESS PARAMETERS
JF High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
JO HTM
YR 2016
FD 2017-05-17
VO 20
IS 4
SP 333
OP 354
K1 thermal barrier coatings
K1 surface grinding
K1 lapping
K1 Taguchi design method
K1 grey relation grade
K1 ANOVA
K1 surface finish
AB The metallic component of thermally sprayed industrial ceramic oxide coatings, i.e., thermal barrier coatings (TBC) exhibit both metal and ceramics features such as toughness, increased hardness, thermal and chemical degradation, and wear resistance. Despite their outstanding performance
characteristics, TBCs are not widely used due to the high machining cost, difficulty to machine, and the inadequate machining information. The thickness (100 to 300 μm) of TBCs demand precision machining carried out by surface grinding and lapping using special tools. The performance
characteristics of precision machining of TBCs are studied experimentally at various cutting parameters by measuring the cutting forces Ft and Fn and surface roughness Ra. Optimum machining conditions for better performance are discussed. Further work shows a productive approach
to the optimization of the multiple output characteristics based on the grey relation analysis to minimize Ft, Fn, and Ra using trials conducted according to the orthogonal array of Taguchi's method. The table and graphs for each level of the precision machining factors (type of coating, grinding wheel type, spray jet power, and standoff distance) are obtained. Using the ANOVA, the significant influence of the type of a grinding wheel has been revealed. An optimal combination of the input parameters was verified through a series of confirmation tests. It is proved that the above
output quality characteristics would improve the efficiency through this approach.
PB Begell House
LK https://www.dl.begellhouse.com/journals/57d172397126f956,1b0bc5e9374e6e61,2c7196ca3c918323.html