MULTIRESPONSE OPTIMIZATION ON THE PROCESS OF ROOF TILES MANUFACTURE USING THE TAGUCHI AND PCR-TOPSIS METHOD

Most people on Java Island in Indonesia use roof tiles as roofs for their buildings. The advantages of tile include the availability various models, cheaper price, light weight, easy installation process, absorb heat, low noise when exposed to rain, and durable. produced by small medium industries have not met quality requirements. This study was conducted determine optimum factor level production adding glass powder wood ash into clay variation placement kiln. Glass contain silicon dioxoide about 85%. It is an important substance increase strength tile. Meanwhile responses measured were compressive strength, visual testing, water absorption, permeability. Taguchi method used improve product processes with high efficiency both cost number treatments. PCR-TOPSIS Method optimal setting process parameters. From optimization results, combination factors A1B1C1 (4% powder, 4% ash, first kiln placement).