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Title: Fluorescent Penetrant Inspections Using Non-Aqueous Solvent and Developer.

Abstract

Abstract not provided.

Authors:
;
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1406847
Report Number(s):
SAND2016-10694C
648538
DOE Contract Number:
AC04-94AL85000
Resource Type:
Conference
Resource Relation:
Conference: Proposed for presentation at the American Society for Nondestructive Testing Annual Conference held October 24-27, 2016 in Long Beach, CA.
Country of Publication:
United States
Language:
English

Citation Formats

Lentfer, Andrew, and Moore, David G. Fluorescent Penetrant Inspections Using Non-Aqueous Solvent and Developer.. United States: N. p., 2016. Web.
Lentfer, Andrew, & Moore, David G. Fluorescent Penetrant Inspections Using Non-Aqueous Solvent and Developer.. United States.
Lentfer, Andrew, and Moore, David G. 2016. "Fluorescent Penetrant Inspections Using Non-Aqueous Solvent and Developer.". United States. doi:. https://www.osti.gov/servlets/purl/1406847.
@article{osti_1406847,
title = {Fluorescent Penetrant Inspections Using Non-Aqueous Solvent and Developer.},
author = {Lentfer, Andrew and Moore, David G.},
abstractNote = {Abstract not provided.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2016,
month =
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

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  • The Federal Aviation Administration Airworthiness Assurance NDI Validation Center currently assesses the capability of various non-destructive inspection (NDI) methods used for analyzing aircraft components. The focus of one such exercise is to evaluate the sensitivity of fluorescent liquid penetrant inspection. A baseline procedure using the water-washable fluorescent penetrant method defines a foundation for comparing the brightness of low cycle fatigue cracks in titanium test panels. The analysis of deviations in the baseline procedure will determine an acceptable range of operation for the steps in the inspection process. The data also gives insight into the depth of each crack and whichmore » step(s) of the inspection process most affect penetrant sensitivities. A set of six low cycle fatigue cracks produced in 6.35-mm thick Ti-6Al-4V specimens was used to conduct the experiments to produce sensitivity data. The results will document the consistency of the crack readings and compare previous experiments to find the best parameters for water-washable penetrant.« less
  • It is a well-known fact that existing nondestructive testing methods, such as eddy current and ultrasonic techniques, are limited in the discrimination of complex crack patterns such as closely spaced cracks or axial cracks crossed by circumferential cracks. To resolve this problem, engineers at Vattenfall AB, Ringhals, have developed a fluorescent penetrant method that allows remote in-service inspection of tubes. The method has been used in Ringhals 2, 3, and 4, and the results have been verified on real cracks in pulled steam generator tubes. Cracks < 2 mm long have been identified. The method, which is being patented, ismore » applicable to all sizes of tubing, as well as for other flat or curved surfaces.« less
  • The Federal Aviation Administration's Airworthiness Assurance NDI Validation Center (AANC) is currently characterizing low cycle fatigue specimens that will support the needs of penetrant manufacturers, commercial airline industry and the Federal Aviation Administration. The main focus of this characterization is to maintain and enhance the evaluation of penetrant inspection materials and apply resources to support the aircraft community needs. This paper discusses efforts to-date to document the Wright Laboratory penetrant evaluation process and characterize penetrant brightness readings in the initial set of sample calibration panels using Type 1 penetrant.
  • A system has been developed by which Fluorescent Penetrant Inspection (FPI) or Magnetic Particle Inspection (MPI) may be performed on areas normally inaccessible or areas that would require extensive disassembly prior to penetrant inspection. This is accomplished by implementing the use of a specially designed Borescope Inspection System. This system consists of four (4) main components: An Ultra-Violet Light Source, a UV Borescope, a Penetrant Delivery System, and a Video Analyzer capable of performing high resolution image enhancement, measurement, and trend monitoring. These components are discussed in this paper.
  • The Federal Aviation Administration`s Airworthiness Assurance NDI Validation Center (AANC) and the Center for Aviation Systems Reliability (CASR) are currently working to develop a liquid penetrant inspection (LPI) system evaluation capability that will support the needs of the penetrant manufacturers, commercial airline industry and the FAA. The main focus of this facility is to support the evaluation of penetrant inspection materials, penetrant systems and to apply resources to support industry needs. This paper discusses efforts to create such a facility and an initial project to produce fatigue crack specimens for evaluation of Type 1 penetrant sensitivities.