Improving joining performance of composites by electro-spinning of nano fibers için kapak resmi
Improving joining performance of composites by electro-spinning of nano fibers
Improving joining performance of composites by electro-spinning of nano fibers
Esenoğlu Gözde, author.
Yazar Ek Girişi:
Fiziksel Tanımlama:
xii, 67 leaves: charts;+ 1 computer laser optical disc.
Mechanical joints (screws, rivets, etc.) traditionally used in composite materials (screws, rivets, etc.) increase weight and act as a stress collector, causing serious delamination problems. On the other hand, development of alternative joining techniques has become an important alternative in the composite industry due to their sensitivity to corrosion, electromagnetic properties/radar absorption properties, labor cost, and adverse effects on the manufacturing process. In this thesis, the effects polyamide 66 (PA 66) nanofiber coatings, applied on two different prepreg systems (UD and woven) on the mechanical properties of the joint region were investigated. Moreover, the microstructures of the produced PA66 nanofibers were investigated. The produced nanofibers were directly coated on the bond zone layer (top surface) of the carbon prepregs. The reference and nanofiber coated prepregs were laminated and cured using hot pressing method, and then the laminated layers were joined together using with the secondary bonding method employing FM300K film adhesive under a hot press. Tensile, compression, bending, shear, charpyimpact and double cantilever beam (DCB) tests were performed on the produced samples. The effect of homogeneity and areal weight density (AWD) of PA66 nanofibers on mechanical performance of the composite specimens was investigated. The morphology and post-test deformations of the nanofibers were investigated by scanning electron microscopy (SEM). The thermal properties of PA66 nanofibers were investigated by the differential scanning calorimetry (DSC) method. By comparing the SEM images and the lap shear test results, the most efficient parameters for the mechanical performance of the composites were determined. The results showed that PA66 nanofibers produced with a 10% wt solution ratio and 10 min coating time were the most effective on joining of the composites. The incorporation of PA66 nanofibers produced with the electrospinning tecnique over the joining region of the composite plates has been proven to increase the joining region performance of the composite parts.
Konu Başlığı:

Yazar Ek Girişi:
Tek Biçim Eser Adı:
Thesis (Master)--İzmir Institute of Technology: Mechanical Engineering.

İzmir Institute of Technology: Mechanical Engineering--Thesis (Master).
Elektronik Erişim:
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