Multicriteria Evaluation of Structural Composite Lumber Products

Yıl 2020, Cilt: 5 Sayı: 5, 807 - 813, 31.12.2020

Hilal Singer , Şükrü Özşahin

https://doi.org/10.35229/jaes.833750

Cited By: 2

Öz

In this study, laminated veneer lumber, parallel strand lumber, and laminated strand lumber were evaluated via multicriteria decision-making methods. Within the model, nine evaluation criteria were defined: moisture content, density, bending strength, modulus of elasticity, compression strength parallel to grain, dynamic bending strength, tensile strength parallel to surface, tensile strength perpendicular to surface, and screw holding capacity. The weights of the criteria were computed using the fuzzy analytic hierarchy process (FAHP). The evaluation based on distance from an average solution (EDAS) and the technique for order preference by similarity to an ideal solution (TOPSIS) were employed to determine the ranking of the alternatives. After the borda count method was used, an integrated ranking was obtained. According to the results, the first three important subcriteria were density, bending strength, and modulus of elasticity. Furthermore, laminated veneer lumber was determined as the best alternative. Consequently, this study can present a road map to evaluate wooden materials.

Anahtar Kelimeler

EDAS, FAHP, multicriteria decision-making, structural composite lumber, TOPSIS

Yapısal Kompozit Kereste Ürünlerinin Çok Kriterli Değerlendirilmesi

Öz

Bu çalışmada, tabakalanmış kaplama kereste, paralel şerit kereste ve tabakalanmış şerit kereste çok kriterli karar verme yöntemleri ile değerlendirilmiştir. Modelde dokuz değerlendirme kriteri belirlenmiştir: rutubet miktarı, yoğunluk, eğilme direnci, elastikiyet modülü, liflere paralel basınç direnci, dinamik eğilme direnci, yüzeye paralel yönde çekme direnci, yüzeye dik yönde çekme direnci ve vida tutma kabiliyeti. Kriterlerin ağırlıkları bulanık analitik hiyerarşi prosesi (BAHP) kullanılarak hesaplanmıştır. Alternatiflerin sıralamasını belirlemek için ortalama çözüm uzaklığına göre değerlendirme (EDAS) ve ideal çözüme benzerliğe göre tercih sıralama tekniği (TOPSİS) kullanılmıştır. Borda sayım yöntemi kullanıldıktan sonra birleşik bir sıralama elde edilmiştir. Sonuçlara göre, ilk üç önemli alt kriter yoğunluk, eğilme direnci ve elastikiyet modülüdür. Buna ilaveten, tabakalanmış kaplama kereste en iyi alternatif olarak belirlenmiştir. Sonuç olarak, bu çalışma ahşap malzemelerin değerlendirilmesi için bir yol haritası sunabilir.

Anahtar Kelimeler

BAHP, çok kriterli karar verme, EDAS, TOPSİS, yapısal kompozit kereste

Kaynakça

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