Table 1.
Parameters of the test components.
Fig 1.
Process of sandwich panel preparation.
(a) Laying of the lower layer of fiber cloth. (b) Laying of the core material. (c) Laying of the upper face sheet of fiber cloth. (d) Laying of the vacuum bag. (e) Resin infusion. (f) Cutting and shaping.
Fig 2.
(a) Specimen size for the tensile tests of the face sheets and webs. (b) Specimen size for the longitudinal and transverse shearing tests of the webs.
Table 2.
Results of face sheet tensile tests.
Fig 3.
Foam compression test.
Fig 4.
Stress-strain curves from flat crush tests of the foam core material.
Fig 5.
(a) Uniform loading. (b) Concentrated loading.
Fig 6.
Load-central point vertical displacement curve.
Table 3.
Experimental results for specimens with different web heights.
Fig 7.
Photograph of the failure of specimen SX75-175.
Fig 8.
Fracture failure of the upper face sheet.
(a) SX50-75. (b) SX75-75. (c) SX100-75. (d) SX75-125.
Fig 9.
Load-deflection curves of the specimens.
Fig 10.
Relationship between the specimen load and web density.
Fig 11.
Relationship between the specimen load and web height.
Table 4.
Test result comparison.
Fig 12.
Schematic diagram of an original sandwich panel and the corresponding simulated sandwich panel.
Fig 13.
Mechanical model of the simulated sandwich panel.
Fig 14.
Calculation of specimen deflections and comparison with the experimental values.
(a) SX75-75 deflection. (b) SX75-125 deflection. (c) SX75-175 deflection. (d) SX100-75 deflection. (e) SX50-75 deflection.
Table 5.
Contrast in vertical deflections at the central point of the sandwich panels (uniformly distributed load q = 10.08kN/2).