A new testing device to simultaneously measure the mode I fatigue delamination behavior of a batch of specimens. (November 2018)

• Record Type: Journal Article
• Authors: Renart, J.; Budhe, S.; Carreras, L.; Mayugo, J.A.; Costa, J.
• Is Part Of: International journal of fatigue. Volume 116(2018)
• Page Start: 275
• Page End: 283
• Publication Date: 2018-11
• Subjects: Fatigue -- Fracture -- Test rig -- Multiple specimen testing -- Composites; Materials -- Fatigue -- Periodicals; Materials -- Fatigue; Periodicals; 620.1122
• DOI: 10.1016/j.ijfatigue.2018.06.021
• Languages: English
• ISSNs: 0142-1123

Abstract

Highlights: A test device and a method to run 6 DCB fatigue tests in parallel are detailed. The method allows testing at different levels of energy release rate and load ratios. Onset of fatigue propagation of 6 DCB specimens is determined in one run. Continuous crack growth rate curves are obtained. The onset points are determined with an accuracy of 1 cycle. Abstract: Determining fatigue onset and crack propagation curves for delamination in composites requires time-consuming test campaigns. This work presents a new test rig and its associated methodology to test several mode I specimens simultaneously in a universal testing machine. The novelty of the solution relies on being able to test several specimens at different levels of load ratio and energy release rates in a single run. The performance of the system is exemplified by measuring the complete onset and crack growth rate curves of a batch of 12 carbon fibre reinforced specimens in only two test runs.