J-GLOBAL ID:200904065307547990  Research Project code:9800036340 Update date:Feb. 29, 2000

Study on mechanical properties of aluminum honeycomb sandwich panel with ultra thin CFRP skin

Study period:1994 - 1997
Organization (1):
Investigating Researcher (3):
Research overview:
To reduce the weight of rockets and satellites, aluminum-core honeycomb sandwich panels with laminate high-rigidity CFRP skin are widely used. Thickness reduction of the skin is required. In the production process, difference in coefficient of thermal expansion between core and skin causes fine dimples to be developed by thermal buckling. This significantly reduces the rigidity and compression buckling strength of the panel. This study applies the three-dimensional finite element method to examine thermal stress intensity, dimpling generation, and the rigidity and compressive load strength of dimpled sandwich panels. Using the ABAQUS solver, dimple's depth or its affection on the adhesive layers was examined. Sandwich panels were produced while varying the process temperature as parameter, the depth of dimpling was measured, and rigidity data were collected by four-point bending test and compared with analysis data.
Keywords (10):
fiber ,  honeycomb ,  laminated ,  sandwich ,  flat ,  finite ,  thermal ,  buckling(material ,  mechanical ,  carbon
Research program: Ordinary Research
Ministry with control over the research :
Ministry of Education, Culture, Sports, Science and Technology

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