ALÜMİNYUM OKSİT VE TİTANYUM DİOKSİT PARTİKÜL TAKVİYELİ YAPIŞTIRICILARLA BİRLEŞTİRİLMİŞ BAĞLANTILARIN MEKANİK ÖZELLİKLERİNİN DENEYSEL OLARAK BELİRLENMESİ

Havacılık alanında kullanılan yapısal yapıştırıcılar içerisine partikül katılarak elde edilen kompozit yapıştırıcılar, nano teknolojide meydana gelen son gelişmelerle birlikte yapıştırma bağlantılarının tasarımına yeni bir bakış açısı kazandırmıştır. Bu çalışmada; farklı özelliklerdeki yapısal yapıştırıcılar içerisine alüminyum oksit ve titanyum dioksit katılarak elde edilen tek tesirli bindirme bağlantılarının mekanik özellikleri çeki yükü altında deneysel olarak incelenmiştir. DP460, DP270, Araldite2015 ve AV138 yapıştırıcı olarak, ağırlıkça % 1 ve % 2 oranında alüminyum oksit (Al2O3) ve titanyum dioksit (TiO2) katkı maddesi olarak, AA2024-T3 alüminyum alaşımı ise yapıştırılan malzeme olarak kullanılmış ve tek tesirli bindirme bağlantı numuneleri üretilmiştir. Deneylerden elde edilen sonuçlar incelendiğinde; partikül katkılı yapıştırıcıların kullanılmasıyla elde edilen bağlantılarda çeki hasar yükünün arttığı görülmüştür. Ayrıca bağlantıların kuvvet-yer değiştirme eğrileri incelendiğinde, partikül katkılı yapıştırıcıyla birleştirilmiş bağlantıların yer değiştirme kapasitelerinin de arttığı belirlenmiştir.

EXPERIMENTAL DETERMINATION OF THE MECHANICAL PROPERTIES OF ALUMINIUM OXIDE AND TITANIUM DIOXIDE PARTICLE REINFORCED ADHESIVELY BONDED JOINTS

The composite adhesives which are produced by adding particles into the structural adhesives used in aviation area as well as the latest developments in nanotechnology have given a new perspective to the design of adhesively bonded joints. This study examined the mechanical aspects of adhesively-bonded single lap joints produced by adding aluminium oxide and titanium dioxide into adhesives with different characteristics in an experimental manner under tensile load. DP460, DP270, Araldite2015 and AV138 were used as the adhesives; aluminium oxide (Al2O3) and titanium dioxide (TiO2) were used as additive materials at 1% or 2% by weight, and AA2024-T3 aluminium alloy was used as the adhered material. Under these conditions, adhesively-bonded single-lap joints were produced. The results of the experiment showed that tensile failure load was increased in the bonded joints with particle-reinforced adhesive. In addition, the study examined the force-displacement curves and found that the joints with nanoparticle-added adhesive had an increased displacement capacity.

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