Abstract
An experimental study has been carried out to investigate both the static and dynamic bearing strengths of a pinned-joint carbon epoxy composite plate with [0°/45°/−45°/90°] S and [90°/45°/−45°/0°] S stacking configurations. The static and dynamic experiments have been carried out according to the ASTM D953 standards and ASTM STP 749, respectively [ASTM D 953-D, Standard Test method for Bearing Strength of Plastics, ASTM Designation. 342; Joining of Composite Materials, ASTM STP 749, American Society for Testing and Materials (1981) 131]. The ratio of the edge distance to the pin diameter ( E/ D), and that of the width to the pin diameter ( W/ D) of the specimens were varied to obtain the static bearing strength and the S–N fatigue curve. The experiments show that the static bearing strengths reach their upper limit when E/ D and W/ D ratios are equal to or greater than 4 for both [0°/45°/−45°/90°] S and [90°/45°/−45°/0°] S stacking sequences. The fatigue strength, on the other hand, reduces by up to 65% as E/ D and W/ D ratios increase for both stacking configurations.
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