Experimental study of the rubber cord adhesion inflation test

• Published in: Engineering fracture mechanics Vol. 224; no. 224; p. 106783
• Main Authors: Kane, K., Jumel, J., Lallet, F., Mbiakop-Ngassa, A., Vacherand, J.-M., Shanahan, M.E.R.
• Format: Journal Article
• Language: English
• Published: New York Elsevier Ltd 01.02.2020; Elsevier BV; Elsevier
• Subjects: Adhesion tests; Cords; Crack propagation; Elastomers; Engineering Sciences; Fluid injection; Hyperelasticity; Inflation test; Ogden model; Rubber; Rubber cord adhesion; Sensitivity analysis; SERR; Strain energy release rate; Strain rate; Test procedures; Ogden model; Rubber cord adhesion; Inflation test; SERR; Hyperelasticity
• ISSN: 0013-7944; 1873-7315
• DOI: 10.1016/j.engfracmech.2019.106783

•Analysis of rubber cord adhesion inflation test has been extended to ogden model.•Marker tracking technique is proposed to monitor crack propagation.•Injection rate effect on fracture energy of rubber-brass interface is studied. An important property affecting the integrity of a tyre is the adhesion between rubber and reinforcements such as metal cords. Standard tests used to evaluate rubber-metal adhesion fail to predict the intrinsic interfacial behaviour. A novel test protocol, referred to as the Rubber Cord Adhesion Inflation Test (RCAIT), has therefore been developed. In this work, RCAIT is used to compare the performance of four different adhesive systems (two rubber types and two cord coatings). In addition, the effect of fluid injection rate on crack propagation pressure is evaluated and is correlated to the sensitivity of the tensile behaviour of the rubber to strain rate. Some improvements in the RCAIT analysis are also proposed here. A thick rubber tube inflation model is proposed in conjunction with the Ogden model for hyperelastic behaviour that can be applied to other elastomeric models as well. In conclusion, the relationship between crack propagation speed and Critical Strain Energy Release Rate (SERR) is discussed.