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The Effects of Temperature, Humidity and Aircraft Fluid Exposure on T800H/3900-2 Composites Bonded with AF-555M AdhesiveFiber reinforced resin matrix composites and structural adhesives have found increased usage on commercial and military aircraft in recent years. Due to the lack of service history of these relatively new material systems, their long-term aging performance has not been well established. In this study, single lap shear specimens (SLS) were fabricated by secondary bonding of Scotch-Weld(TradeMark) AF-555M between pre-cured adherends comprised of T800H/3900-2 uni-directional laminates. The adherends were co-cured with wet peel-ply for surface preparation. Each bond-line of the SLS specimen was measured to determine thickness and inspected visually using an optical microscope for voids. A three-year environmental aging plan for the SLS specimens at 82 C (180 F) and 85% relative humidity was initiated. SLS strengths were measured for both controls and aged specimens at room temperature and 82 C. The effect of this exposure on lap shear strength and failure modes to date is reported. In addition, the effects of water, saline water, deicing fluid, JP-5 jet fuel and hydraulic fluid on both the composite material and the adhesive bonds were investigated. The up to date results on the effects of these exposures will be discussed.
Document ID
20100019160
Acquisition Source
Langley Research Center
Document Type
Conference Paper
Authors
Miner, Gilda A.
(NASA Langley Research Center Hampton, VA, United States)
Hou, Tan-Hung
(NASA Langley Research Center Hampton, VA, United States)
Lowther, Sharon E.
(NASA Langley Research Center Hampton, VA, United States)
Thibeault, Sheila A.
(NASA Langley Research Center Hampton, VA, United States)
Connell, John W.
(NASA Langley Research Center Hampton, VA, United States)
Blasini, Sheila Roman
(Puerto Rico Univ. Rio Piedras, Puerto Rico)
Date Acquired
August 24, 2013
Publication Date
May 10, 2010
Subject Category
Fluid Mechanics And Thermodynamics
Report/Patent Number
NF1676L-10362
Meeting Information
Meeting: 2010 Aircraft Airworthiness & Sustainment Conference
Location: Austin, TX
Country: United States
Start Date: May 10, 2010
End Date: May 13, 2010
Funding Number(s)
WBS: WBS 698259.02.07.07.04.04
Distribution Limits
Public
Copyright
Public Use Permitted.
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