Yapıların Zaman-Frekans Ortamında Dalgacık Dönüşümü Metoduyla Hasar Analizleri

Bu çalışmada zaman-frekans ortamında uygulanan hasar tanılama tekniklerinde gözlenen son araştırmalara bakılarak yeni hasar tanılama algoritmaları incelenmiştir. Özellikle yapı sağlığı çalışmalarında ivme, hız ve deplasman gibi kinematik parametreleri ve bunların türevleri üzerinden örneğin hız bilgisinin enerji tabanlı kinetik bir parametre ile ifade edilerek etkin hasar tespitleri yapılabildiği bilinmektedir. Analitik modellerden elde edilen sitasyoner ve ergodic yapıda olmayan kinematik ölçümlere dalgacık dönüşümleri uygulanarak hasar alan ve doğrusal olmayan özellik gösteren yapısal elemanlar tespit edilmiştir. Sürekli dalgacık dönüşümü ve dalgacık paket dönüşümü uygulanan örneklerde bu metotların hasar tespitinde etkili bir yöntem olarak kullanılabileceği sonucuna ulaşılmıştır.

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