Experimental failure testing and repair of internal pressurized composite pipes using different fracture models

İsmail Yasin Sülü; Apdulmutalip Şahinaslan

doi:10.3139/120.110918

Article

Experimental failure testing and repair of internal pressurized composite pipes using different fracture models

İsmail Yasin Sülü and Apdulmutalip Şahinaslan

Published/Copyright: August 30, 2016

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From the journal Materials Testing Volume 58 Issue 9

Abstract

The failure testing and repair of composite pipes using different fracture models and different orientation angles under internal pressure was experimentally investigated. Patches with different dimensions were made from composite material for repair. Fracture models on composite pipes were created for three different angles. These are horizontal crack, vertical crack and inclined crack. Adhesive layers created by using DP 410 for repair and failure testing of the composite pipes with different fractures were carried out. Failure loads were obtained from experimental tests. The shear extension coupling of composite pipe and patch was considered because the lay-up angles with + θ and – θ layers were in different radii. Effects of orientation angles and types of fracture models were investigated regarding interaction between the pipe, the adhesive and the patch. The most effective patch width and orientation angles were determined.

Kurzfassung

Für den vorliegenden Beitrag wurden das Versagen und die Reparaturmöglichkeiten von Kompositrohren unter Innendruck mittels verschiedener Bruchmodelle und verschiedener Orientierungswinkel experimentell untersucht. Hierzu wurden Reparaturflicken mit verschiedenen Dimensionen aus Kompositmaterial angefertigt. Die Bruchmodelle für die Kompositrohre wurden für drei verschiedene Winkel angesetzt. Es wurden Adhäsionslagen unter Verwendung von DP 410 für die Reparatur und die Untersuchung des Versagens der Kompositrohre unter verschiedenen Brüchen hergestellt. Mittels experimenteller Untersuchungen wurden die Versagenslasten bestimmt. Die Kompositrohre und die Flicken hatten Winkel von + θ und – θ für die Lagen unter verschiedenen Radien. Es wurden die Auswirkungen der Orientierungswinkel und die Typen der Bruchmodelle im Zusammenspiel zwischen Rohr, Adhäsionsmaterial und Flicken untersucht. Hierbei wurden die effektivste Flickenbreite und der Orientierungswinkel bestimmt.

*Correspondence Address, Assistant Prof. Dr. İsmail Yasin Sülü, Department of Mechanical Engineering, Inonu University, 44280 Malatya, Turkey, E-mail: ismail.sulu@inonu.edu.tr

İsmail Yasin Sülü, born in 1984, graduated with a BSc degree from the Mechanical Engineering Department, Engineering Faculty, İnönü University, Malatya, Turkey in 2006. He finished his MSc in the Mechanical Engineering Department, Institute of Natural and Applied Sciences, Çukurova University, Adana, Turkey. Then, he received his PhD from the Mechanical Engineering Department, Institute of Natural Sciences, İnönü University. Currently, he is Assistant Professor in the Mechanical Engineering Department, Engineering Faculty, İnönü University, Malatya, Turkey. His study areas are mechanics of composites, solid mechanics and mechanics of adhesives.

Apdulmutalip Şahinaslan, born in 1968, graduated from the Mechanical Engineering Department, Engineering Faculty, Erciyes University, Kayseri, Turkey. He finished his MSc degree at the same university and received his PhD at the Energy Systems Engineering Department, Institute of Natural Sciences, Gazi University, Ankara, Turkey. Currently, he is Assistant Professor in the Mechanical Engineering Department, Engineering Faculty, İnönü University, Malatya, Turkey. His study areas are nuclear energy, computer machine design and machine elements.

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Published Online: 2016-08-30

Published in Print: 2016-09-07

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https://doi.org/10.3139/120.110918