Survey of methodologies for the real time noncontact inspection of internal defects within thick high-density components

P. Douglas; C. R. Nagarajah; William Thompson

doi:10.1117/12.156409

22 September 1993 Survey of methodologies for the real time non-contact inspection of internal defects within thick high-density components

P. Douglas, C. R. Nagarajah, William Thompson

Author Affiliations +

Proceedings Volume 2101, Measurement Technology and Intelligent Instruments; (1993) https://doi.org/10.1117/12.156409
Event: Measurement Technology and Intelligent Instruments, 1993, Wuhan, China

Abstract

The purpose of this paper is to identify the most promising methodology for an application involving real time component inspection. The components which are of a thick high density nature are to be inspected for internal defects such as cracks, cavities and voids. The alternative methodologies to be evaluated include x-radiology, ultrasonic testing and neutron radiology. The authors of this paper contend that, due to the lengthy exposure times and the high cost of suitable generators, neutron techniques are incapable of satisfying the real time component of this application. Although ultrasonic techniques are very sensitive to the presence of defects, it is much more difficult to accurately and reliably determine their size. The authors have found that in light of the highly sensitive nature of ultrasound, it maybe suitable for the application. The paper also examines x-radiological methods in terms of hardware limitations and techniques used to overcome these problems. In terms of detecting and evaluating in real time, the extent of defects within thick high density components, the most suitable techniques have been evaluated.

Citation Download Citation

P. Douglas, C. R. Nagarajah, and William Thompson "Survey of methodologies for the real time non-contact inspection of internal defects within thick high-density components", Proc. SPIE 2101, Measurement Technology and Intelligent Instruments, (22 September 1993); https://doi.org/10.1117/12.156409

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