Evaluation for tensile failure process of NOL rings based on infrared thermography.

• A nondestructive monitoring method of failure behaviors of fiber-winding composites is proposed based on infrared thermography. • The abilities of infrared thermography to evaluate the failure process and failure modes are validated in fiber-wound composites. • Infrared thermography has a certain advantage for comparing fiber volume fractions when professional testing devices are lacking. This paper presents a new method for evaluating the failure and processing technology of fiber-winding composites based on infrared thermography. Firstly, infrared thermography was used to monitor the surface temperature evolution during the loading of Naval Ordnance Laboratory (NOL) rings. Secondly, the mechanical and temperature data were recorded simultaneously until the failure of the NOL rings occurred. Thirdly, the mechanical results were compared with the monitoring results obtained from infrared thermography concerning the failure of the NOL rings. Lastly, an evaluation was conducted regarding the capability of infrared thermography to elucidate the failure of the NOL rings. The experiment results demonstrated that infrared thermography can characterize the failure process and failure modes of fiber-winding composites with limited mechanical or optical technology. Besides, this testing technology provides a significant advantage when comparing fiber volume fractions, particularly in situations where professional testing devices are unavailable. This work provides a new reference for the application of infrared thermography within the domain of fiber-winding composites. [ABSTRACT FROM AUTHOR]