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

Abstract

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