Desain Eksperimen Menggunakan Metode Taguchi untuk Meningkatkan Kualitas Produk Genteng Beton di UKM Gunung Jati Medan

Abstract

Gunung Jati SME is a home industry engaged with vaving blocks, ceramics, ventilation, roof – tiles and riol products. This research aims to improve the quality of the roof – tiles, the product which having the most failure by broken and cracks. The composition of raw material is an important case to be considered by the production process. Therefore, the research is needed to be executed to deal with related factors influence the quality of the roof – tiles and the identification toward the most influencing factor of fail products result. Then, Taguchi experimental design method was conducted to determine the composition of concrete roof – tiles. In this experiment, it is used the raw materials such as; cement, sand, flour mill, and water. Moreover, based on the study result, it is shown that the quality of roof – tiles has improved by applying Taguchi method and the confirmation experiment marked by the increasing of pressure strength on the average value (u) and the variability (SNR). The pressure strength average (u) of roof – tiles has increased from 19.814 ≤ 21.208 ≤ 22.602 on Taguchi experiment, and it became 26.406 ≤ u confirmed ≤ 29.894 on confirmation experiment. On the other hand, (SNR) has increased from 25.532 ≤ 27.521 ≤ 29.510 on Taguchi experiment, and it became 26.473 ≤ S/N confirmed ≤ 31.469 on confirmation experiment. Then, the optimal measurement consist of cement : sand : mill dust : water which result the best pressure based on the factor of response and SNR in rows are 0.9 kg : 0.5 kg : 0.4 kg : 0.3 kg. Thus, the most prominent factors toward the roof – tiles pressure strength is the measurement of sand and flour mill.