Vickers Mikro Sertlik Testi Kullanılarak Yaşlı Ahşap Malzemelerin Mekanik Özelliklerinin Belirlenmesi

Çalışmanın amacı: Bu çalışmada, tarihi ahşap binalardan elde edilen yaşlı ahşabın zaman etkisi altındaki değişimlerinin belirlenmesi amaçlanmıştır.Çalışma alanı: Deneysel analizde yaşlı ahşap (AW) ve yeni ahşap (NW) kullanılmıştır. Ahşap örneklerinin türü Pinus sylvestris L.’ tir. Yaşlı ahşap 50 yaşın üzerinde olup, Kastamonu'daki tarihi ahşap binalardan elde edilmiştir.Materyal ve Yöntem: Yaşlı ve yeni ahşap örnekleri zamanın etkisini karşılaştırmak için hazırlanmıştır. Yeni ve yaşlı ahşapların mekanik özellikleri, kristalliği ve mikro yapısı sırasıyla Vickers mikrosertlik, XRD ve SEM cihazları kullanılarak incelenmiştir. Yaşlı ve yeni ahşap malzemenin mekanik ve yapısal özelliklerinde meydana gelen değişimler tespit edilmiştir.Temel Sonuçlar: Numunelerin mikrosertlik değerleri uygulanan yüke bağlıdır ve yük arttıkça mikrosertlik değeri artmıştır. Meyer kanunu, orantılı numune direnci (PSR), elastik/plastik deformasyon (EPD), Hays-Kendall (HK) yaklaşımı ve çentici kaynaklı yarılma (IIC) modelleri yükten bağımsız mikrosertlik değerlerinin araştırılması için analiz edilmiştir. Sonuç olarak IIC modeli en başarılı model olarak belirlenmiştir

Anahtar Kelimeler:

Yaşlı ahşap, yeni ahşap, tarihi yapı, kültürel miras, vickers mikrosertlik

Determination of Mechanical Properties of Aged Wood Material Using Vickers Microhardness Test

Aim of study: In this study, it was aimed to determine the changes under the influence of time of the age wood obtained from the historical wooden buildings.

Keywords:

Aged wood, new wood, historical construction, cultural heritage, vickers microhardness,

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