Filaman Sarım CETP Kompozit Boruların Mekanik Özelliklerinin ve Hasar Gelişiminin Halka Çekme Testi ile İncelenmesi

Yıl 2024, Cilt: 6 Sayı: 1, 93 - 104, 30.04.2024

Lokman Gemi , Mohammad Azeem Şakir Yazman , Mehmet Kayrıcı , Onur Gök

https://doi.org/10.47112/neufmbd.2024.34

Öz

Filaman sarım yöntemi ile üretilen kompozit borular; hafiflikleri, korozyon dirençleri ve yüksek mukavemetlerinden dolayı birçok mühendislik alanlarında kullanılmaktadır. Özellikle doğalgaz ve petrol boru hatlarında basınç altında çalışan kompozit borular kullanılacağı alanda taşıyabileceği yükleri karşılayabilmesi için özel tasarımlar yapılmaktadır. Filaman sarım üretim yöntemi ile elyaf türü, elyaf sarım açısı ve tabaka sayısı değiştirilerek ihtiyaca göre farklı özelliklerde ve mukavemetlerde kompozit borular üretilebilmektedir. Değişken parametreler ışığında üretilen her borunun mekanik özelliklerinin belirlenmesi gerekmektedir. İç basınç altında çalışan kompozit boruların mekanik özelliklerinin belirlenmesinde kullanılan yöntemlerden bir tanesi de halka çekme testidir. Bu çalışmada Filaman sarım yöntemi ile ±55° elyaf konfigürasyonu ile 72 mm iç çapında ve 1 m boyunda cam elyaf takviyeli plastik (CETP) borular üretilmiştir. Üretilen borulardan ASTM D2290 standardına göre 30 mm genişliğinde 20 mm daraltılmış bölgelere sahip halka çekme test numuneleri hazırlanmıştır. Deneyler Instron 8801 test cihazında yapılmış ve veriler kaydedilmiştir. Kompozit boruların halka çekme deneyleri sonrasında elde edilen veriler işlenmiş ve grafik haline dönüştürülerek yorumlanmıştır. Deney sonrası hasar bölgeleri yüksek çözünürlüklü olarak fotoğraflanarak ayrıntılı makro ve mikro (SEM) hasar analizi yapılarak oluşan hasar modları belirlenmiştir.

Anahtar Kelimeler

Filaman sarım, Halka çekme testi, Delaminasyon, Kompozit boru

Investigation of Mechanical Properties and Damage Development of Filament Wound GFRP Composite Pipes by Ring Tensile Test

Öz

Composite pipes produced by the filament winding (FW) method are used in many engineering fields due to their lightness, corrosion resistance and high strength. Composite pipes working under pressure, particularly in natural gas and oil pipelines, are specially designed to withstand the loads they will be exposed to in the area where they are used. With the FW production method, composite pipes with different properties and strengths can be produced according to the needs by changing the fiber type, fiber winding angle and number of layers. In the light of varying parameters, it is necessary to determine the mechanical properties of each pipe produced. One of the methods of determining the mechanical properties of composite pipes operating under internal pressure is the ring tensile test. In this study, glass fiber reinforced plastic (GFRP) pipes with an inner diameter of 72 mm and a length of 1 m with ±55° fiber configuration were produced by the FW method. Ring tensile test specimens with 30 mm wide and 20 mm reduced sections were prepared from the produced pipes according to ASTM D2290 standard. Experiments were carried out on an Instron 8801 tester and data were recorded. The data obtained after the ring tensile tests of composite pipes were processed, converted into graphics and interpreted comparatively. After the experiment, the damage areas were photographed at high resolution. Detailed macro and micro (SEM) damage analysis was performed to determine the damage modes.

Anahtar Kelimeler

Filament winding (FW), Ring test, Delamination, Composite pipe

Kaynakça

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