Nondestructive Inspection of Composite Structures: Methods and Practice
نویسنده
چکیده
Composite materials are widely used in a number of industrial sectors from aviation, space, to boat building, automotive, and sports goods. In recent years composite structures have seen a substantial increase of their use in the new generation of airplanes. The nondestructive testing and inspection of composite structures, both for manufacturing quality assurance and for in-service damage detection, has prompted the development and adaptation of a number of methods and techniques over the years. In this paper we review the various NDT methods for inspecting composites, especially those developed by the Center for Nondestructive Evaluation at Iowa State University in its interaction with the industrial users of composites. We will address the inspection issues of different types of composite structures including solid laminates, honeycomband foam-core sandwich components, and touch upon the inspection of perforated facesheets and bonded aluminum structures. The capability of various NDT methods including waterand air-coupled ultrasound, bond testing, manual and automated tap testing, thermography, and shearography will be described, with emphasis given to techniques that demonstrated benefits to the practice of composite inspection. Techniques developed by Iowa State University for performing composite inspections in the field, especially those with imaging capability, will be described.
منابع مشابه
Composite Damage Detection Using a Novel Ultrasonic Method
The nondestructive evaluation (NDE) of complex composite structures often requires labor intensive, expensive methods due to multiple failure modes, difficulty detecting damage, and the large scale of the structures. Conventional NDE methods have been successful but can be improved by incorporating ideas from other fields. In this work, the technology developed in the infrared camera industry i...
متن کاملNondestructive Inspection Research of Composite Materials Used On the Commercial Fleet: Infrared Imaging for Defect Detection in Aircraft Structures Using Chaotic and Broadband Sound Excitation
متن کامل
Ultrasonic nondestructive inspection of solid objects
Ultrasonic testing (UT) has been used for nondestructive evaluation (NDE) of materials for more than half a century. A number of NDE techniques have been developed and specifi standards have been created for the UT applications in different areas of engineering. UT has two main goals related to inspection of solid objects, firstl , detection and characterization of material discontinuities (fl ...
متن کاملAssessment and Monitoring for Railway Tracks Reliability and Safety using Nondestructive Testing Measurement Systems
The deterioration of railway tracks raises great concerns about the integrity of assessments and evaluations of railway tracks currently in service. Integrated inspection strategies coupled with innovations in inspection technology can lead to significant improvements in operational cost efficiency and reliability without the requirement of a fundamental shift in the existing understanding o...
متن کاملMarine Composites Non-Destructive Evaluation
An increasing number of marine structures are utilizing composite materials. Major structure and components can be built lighter and corrosion-resistant using composite construction. The recreational boating industry has long recognized this and now commercial ferries are increasingly realizing fuel savings through weight reduction. The US Navy’s DDG-1000 topside structure and LPD-17 advanced e...
متن کامل