Abstract: A method of manufacturing a fastening portion of an anisogrid composite structure includes winding the fibers to form multiple rib parts of the fastening portion configured by winding fibers on a mold, cutting a prepreg into a shape corresponding to a shape of an opening defined by the multiple ribs, inserting the cut prepreg into the corresponding opening, covering the fastening portion with a release film, and winding a compression film on the release film to apply pressure to the fastening portion.

Abstract: A vibration and shock isolator may include a resilient member and a compressing member. The resilient member may be connected between a vibrating source and an object. The compressing member may provide the resilient member with a compression displacement in accordance with the vibration characteristics applied to the resilient member from the vibrating source to change stiffness of the resilient member. Thus, a designed natural frequency of the isolator may be simply changed using the shape memory wire to suppress vibration amplification. As a result, the isolator may effectively relieve the shock and the vibration so that a structural stability of a structure may be ensured. Further, the isolator may have a simple structure so that the isolator may have improved reliability and durability.