Inspection interval optimization for aircraft composite structures with dent and delamination damage

Vibration Monitoring of Composite Laminates with Delamination Damage

Interval optimization of dynamic response for structures with interval parameters

This paper presents an interval optimization method for the dynamic response of structures with interval parameters. The matrices of structures with interval parameters are given. Combining the interval extension of function with the perturbation theory of dynamic response, the method for interval dynamic response analysis is derived. The interval optimization problem is transformed into a corr...

Fatigue Delamination Monitoring in Composite Structures by Guided Wave Method

This paper presents an effective parameter for fatigue delamination detection and monitoring by guided wave method. The finite element analysis and the Time of Flight parameter defined as a time between guided wave interrogated by an actuator and first wave captured by a sensor was introduced to observe the behaviour of the defected structure. The relationship between ToF and delamination size ...

Remote inspection system for impact damage in large composite structure

A significant opportunity for reducing the weight of composite aircraft is through the development of an economically-efficient method to detect barely-visible or invisible impact damage sustained in service. In this paper, a structurally-integrated, inert, wireless system for rapid, large-area impact damage detection in composite is demonstrated. Large-area inspection from single sensors using...

Experimental Detection of Composite Delamination Damage based on Ultrasonic Infrared Thermography

An experimental setup is designed to detect composite delamination damage based on ultrasonic infrared thermography. The ultrasonic infrared thermography system is composed by ultrasonic excitation system, infrared thermal imager and data acquisition system and two damaged composite plate specimens are produced in the experiment. The image processing methods including thresholding, filters, edg...