Method for producing a bending-resistant, elongated body

Method of modifying the bending resistance of an elongated body comprising:

• determining the desired bending resistance of said elongated body;
• Providing an elongated blank having at least three cavities extending essentially along the entire length of the blank, said at least three cavities having a longitudinal axis, said at least three cavities being enclosed in said blank but for first and second spaced openings at opposite ends of said longitudinal axis, the inner surface of one of said at least three cavities is at a distance from the mass center of the blank seen in a section at right angles to its longitudinal axis and is arranged concentrically around said mass center, the blank being formed from a metallic material;
• locating the remainder of said at least three cavities in said elongated blank so as to achieve said desired bending resistance upon inserting fiber composite bodies formed from a plurality of fibers in a non-metallic material into at least one of said first and second openings of the at least three cavities;
• and affixing in the cavities the fiber composite bodies with an outer surface essentially congruent with the inner surface of said at least three cavities, wherein a majority of fibers in the fiber composite bodies both extend essentially parallel to the longitudinal axis of the elongated blank and are elongated along the whole of its length.