Inspection Reliability of Nortec-30 Eddyscan System

Details

• Corporate Creators:
  United States. Department of Transportation. Federal Aviation Administration
• Corporate Contributors:
  Aging Aircraft Nondestructive Inspection Validation Center
• Subject/TRT Terms:
  Aircraft Structural Components Cracking Evaluation And Assessment Inspection Equipment Inspection Reliability Mechanical Tests Microcracking Nondestructive Tests Nortec-30 Eddyscan System
• Publication/ Report Number:
  DOT/FAA/AR-TN95/1
• DOI:
  https://doi.org/10.21949/1403834
• Resource Type:
  Research Paper
• Geographical Coverage:
  United States
• Corporate Publisher:
  United States. Department of Transportation. Federal Aviation Administration
• Abstract:
  This report is in MS Word 6.0/95 format. A key task of the Aging Aircraft Nondestructive Inspection Validation Center (AANC) at Sandia National Laboratories is to establish and apply a consistent and systematic methodology to assess the reliability of inspections through laboratory and field experiments. Under this mandate the Nortec-30 Eddyscan inspection system was evaluated using procedures and test specimens originally developed to assess the reliability of eddy-current inspections for cracks beneath fasteners. The Nortec-30 Eddyscan inspection system is designed for testing fastener holes with the fastener in place. To evaluate its reliability, the system was used to inspect simulated Boeing lap splice joints. The extent and location of cracks in the upper skins were unknown to the inspector using the equipment. The results of the experiment are discussed in this report in terms of probability of detection curves. Comparisons are made to baseline laboratory detection data obtained using other eddy current equipment. This report is organized into four sections. Section 1 contains a brief product description. Section 2 discusses the conditions surrounding the experiment and the setup procedures followed in performing the experiment. Results of the inspection are presented in the form of probability of detection (PoD) curves and relative operating characteristic (ROC) curves in Section 3. A summary and a discussion of the results are given in section 4.
• Format:
  DOC
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:011c86b5bd4ce0b8d8b03f7b52d23dfabc0e9b3060cdcc59f45f237b3dbab0a9eeae7abc77332e287653a629fc4871c1e7ad354c403f0f902fa683b98c8ce878
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/12563/dot_12563_DS1.pdf
• File Type:
  [PDF - 184.56 KB ]