Impact Damage Characterization and Damage Tolerance of Composite Sandwich Airframe Structures

Details

• Creators:
  Tomblin, John ; Raju, K. S. ; Liew, J ; Smith, B. L.
• Corporate Creators:
  Wichita State University
• Corporate Contributors:
  United States. Department of Transportation. Federal Aviation Administration. Office of Aviation Research
• Subject/TRT Terms:
  • Composite materials
  • Sandwich construction
  • Composite construction
  • Honeycomb structures
  • Engineering tolerances
  • Impact
  • Residual strength
• Publication/ Report Number:
  DOT/FAA/AR-00/44
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  Final Report
• Corporate Publisher:
  United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center
• Description:
  The use of composite sandwich construction is rapidly increasing in current and future airframe designs. Typically, these sandwich constructions use thin gage composite facesheets (0.020″ to 0.045″) which are co-cured to honeycomb and foam cores. Due to the nature of these structures, damage tolerance is more complex than conventional laminated structures. Besides typical damage concerns such as through penetration and delamination, additional modes including core crushing and facesheet debonding must also be addressed. This complicates the certification process by introducing undefined Allowable Damage Limits (ADL) and Critical Damage Thresholds (CDT) as related to the ultimate and limit load carrying capability of the structure. In this report, the preliminary results of the damage resistance and tolerance experiments on sandwich panels are presented. The testing capabilities developed at the Wichita State University to support this program are presented in detail.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/93988/dot_93988_DS1.pdf
• File Type:
  [PDF - 75.86 MB]
• Collection(s):
  FAA William J. Hughes Technical Center for Advanced Aerospace
• Main Document Checksum:
  urn:sha-512:17863e8b29f8340b8bad3c11af6fe1b4cf0bd779d1bbce58ce271206220d67d2cbccf52311daf33c558c3f423a7842dd55c93d6d751c146f6ca63d381e13c3fe