Investigation of the Effects of Polyurethane Foam Reinforcement Thickness on Modal Properties of Sandwich Beams

Yıl 2018, Cilt: 6 Sayı: 1, 511 - 517, 28.06.2018

Murat Şen , Mesut Hüseyinoğlu

Öz

In this study, the effects of
polyurethane foam (PUF) reinforcement thickness on modal properties (natural
frequency, mode shape and damping ratio) of sandwich beams were investigated.
For this purpose, two types of PUF reinforced beams were
used. The one of
these was reinforced onto one surface of aluminum metal face sheet and
the other was reinforced between two aluminum metal face sheets were produced.
Each type was prepared in different PUF thicknesses from 10 mm to 50 mm. The
modal properties were obtained by using experimental modal analysis (EMA)
method for both types.

Anahtar Kelimeler

Modal analysis, Polyurethane Foam, Sandwich Beam

Poliüretan Köpük Takviye Kalınlığının Sandviç Kirişlerin Modal Özellikleri Üzerine Etkilerinin İncelenmesi

Öz

Bu
çalışmada, poliüretan köpük (PUF) takviye kalınlığının sandviç kirişlerin modal
özelliklerine (doğal frekans, mod şekli ve sönüm) etkileri araştırılmıştır. Bu
amaçla, iki tip PUF takviyeli kiriş, biri alüminyum meta tabakasının bir yüzeyi
üzerine ve diğeri iki alüminyum metal tabaka arasına takviye edilmiştir. Her
tip 10 mm'den 50 mm'ye kadar farklı PUF kalınlıklarında hazırlanmıştır. Modal
özellikler, her iki tip için deneysel modal analiz (EMA) yöntemi kullanılarak
elde edilmiştir

Anahtar Kelimeler

Doğal Frekans, Poliüretan Köpük, Sandviç Kiriş

Kaynakça

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