Experimental and analytical program to determine strains in 737 LAP splice joints subjected to normal fuselage pressurization loads

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Description

The Federal Aviation Administration Technical Center (FAATC) has initiated several research projects to assess the structural integrity of the aging commercial aircraft fleet. One area of research involves the understanding of a phenomenon known as ``Widespread Fatigue Damage`` or WFD, which refers to a type of multiple element cracking that degrades the damage tolerance capability of an aircraft structure. Research on WFD has been performed both experimentally and analytically including finite element modeling of fuselage lap splice joints by the Volpe Center. Fuselage pressurization tests have also been conducted at the FAA`s Airworthiness Assurance NDI Validation Center (AANC) to obtain ... continued below

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11 p.

Creation Information

Roach, D.P. & Jeong, D.Y. February 1, 1996.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 102 times , with 7 in the last month . More information about this article can be viewed below.

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Authors

  • Roach, D.P. Sandia National Labs., Albuquerque, NM (United States)
  • Jeong, D.Y. Department of Transportation, Cambridge, MA (United States). John A. Volpe National Transportation Systems Center

Publisher

  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

The Federal Aviation Administration Technical Center (FAATC) has initiated several research projects to assess the structural integrity of the aging commercial aircraft fleet. One area of research involves the understanding of a phenomenon known as ``Widespread Fatigue Damage`` or WFD, which refers to a type of multiple element cracking that degrades the damage tolerance capability of an aircraft structure. Research on WFD has been performed both experimentally and analytically including finite element modeling of fuselage lap splice joints by the Volpe Center. Fuselage pressurization tests have also been conducted at the FAA`s Airworthiness Assurance NDI Validation Center (AANC) to obtain strain gage data from select locations on the FAA/AANC 737 Transport Aircraft Test Bed. One-hundred strain channels were used to monitor five different lap splice bays including the fuselage skin and substructure elements. These test results have been used to evaluate the accuracy of the analytical models and to support general aircraft analysis efforts. This paper documents the strain fields measured during the AANC tests and successfully correlates the results with analytical predictions.

Physical Description

11 p.

Notes

OSTI as DE96007421

Source

  • American Institute of Aeronautics and Astronautics (AIAA)/American Society of Mechanical Engineers (ASME) structures, structural dynamics and materials conference, Salt Lake City, UT (United States), 15-17 Apr 1996

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  • Other: DE96007421
  • Report No.: SAND--96-0330C
  • Report No.: CONF-960424--1
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 206946
  • Archival Resource Key: ark:/67531/metadc670977

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • February 1, 1996

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

Description Last Updated

  • April 13, 2016, 1:48 p.m.

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Roach, D.P. & Jeong, D.Y. Experimental and analytical program to determine strains in 737 LAP splice joints subjected to normal fuselage pressurization loads, article, February 1, 1996; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc670977/: accessed October 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.