The furniture industry is experiencing the problem of uncertainty in determining the optimal amount of wood raw material inventory. Fuzzy logic is one of the methods used to analyze systems that contain uncertainty. This study discusses the application of fuzzy logic in solving the problem of supplying wood raw materials in the furniture industry with the Fuzzy-Mamdani approach. The data used in this study are data on the entry, distribution, and supply of wood raw materials from January to December 2018. The design of the system to obtain output is carried out in the following stages: (a) Formation of fuzzy sets, (b) Application of functions implications, (c) Composition of rules, (d) Affirmation (defuzzification). Solving the problem using the Fuzzy Tsukamoto method is carried out by the Tsukamoto method with the help of Visual Basic software so that the desired results will be obtained on the output variable. From the results of calculations using the Fuzzy Tsukamoto method, it can be analyzed that the comparison between the realized wood raw material inventory with the Fuzzy Tsukamoto approach looks different and the results from the Fuzzy Tsukamoto approach are more optimal.

Supplier performance appraisal is an important decision in a company, because it will increase the company's competitiveness in the face of highly competitive business competition. PT. JQK is currently selecting suppliers who will supply mahogany wood raw materials with five suppliers, namely Manggala Jati, UD. Jati Mukti, “Mukti” Teak Wood Shop, Gunung Hijau, and Indah Sentosa. In this study, the best supplier performance assessment used the Analytical Hierarchy Process (AHP) method. This method is based on the concept of pairwise comparison for each existing hierarchy in the existing hierarchical structure. The criteria used in this selection are 3 criteria and 6 sub-criteria that support each criterion. The criteria that can be used for supplier performance assessment are time, quality, and price. Sub-criteria that can be used in evaluating supplier performance are on time delivery, lead time, specifications of raw materials, quantity of raw materials, purchase price of raw materials, and transportation costs. Based on calculations using the AHP method, the supplier with the best value is the “Indah Sentosa” supplier, whose value is 0.344 or 34.420%.

ABSTRAKPenilaian kinerja pemasok merupakan keputusan yang penting dalam suatu perusahaan, karena akan meningkatkan daya saing perusahaan dalam menghadapi persaingan bisnis yang sangat kompetitif. PT. JQK sedang melakukan pemilihan supplier yang akan memasok bahan baku kayu mahoni dengan lima pemasok, yaitu Manggala Jati, UD. Jati Mukti, Toko Kayu Jati”Mukti”, Gunung Hijau, dan Indah Sentosa. Dalam penelitian ini penilaian kinerja pemasok terbaik menggunakan metode Analytical Hierarchy Process (AHP). Metode ini didasarkan pada konsep perbandingan berpasangan untuk setiap hirarki yang ada pada struktur hirarki yang ada. Kriteria yang digunakan dalam pemilihan ini ada 3 kriteria dan 6 sub kriteria yang mendukung setiap kriteria. Kriteria-kriteria yang dapat digunakan untuk penilaian kinerja pemasok adalah waktu, kualitas, dan harga. Sub kriteria yang dapat digunakan dalam untuk penilaian kinerja pemasok adalah pengiriman tepat waktu, lead time, spesifikasi bahan baku, jumlah bahan baku, harga pembelian bahan baku, dan biaya transportasi. Berdasarkan perhitungan dengan menggunakan metode AHP, maka pemasok yang mempunyai nilai terbaik adalah pemasok “Indah Sentosa”, yang mana nilainya adalah 0,344 atau 34,420%.ABSTRACTSupplier performance evaluation is an important decision in a company, because it will increase the company's competitiveness in the face of very competitive business competition. CV. Rimba Sentosa is selecting suppliers who will supply mahogany wood raw materials with five suppliers, namely Manggala Jati, UD. Jati Mukti, "Mukti" Teak Wood Shop, Gunung Hijau, and Indah Sentosa. In this study the best supplier performance appraisal uses the Analytical Hierarchy Process (AHP) method. This method is based on the concept of pairwise comparisons for each hierarchy that exists in the existing hierarchical structure. The criteria used in this election are 3 criteria and 6 sub criteria that support each criterion. The criteria that can be used for evaluating supplier performance are time, quality, and price. Sub criteria that can be used in assessing supplier performance are on-time delivery, lead time, raw material specifications, quantity of raw materials, purchase price of raw materials, and transportation costs. Based on calculations using the AHP method, then the supplier that has the best value is the "Indah Sentosa" supplier, which value is 0.344 or 34.420%.