Fiber-reinforced composite material and method for manufacturing the same

A method for manufacturing a fiber-reinforced composite material by bonding a first composite material including:

• a fibrous substrate including reinforcement fiber bundles crossing, the reinforcement fiber bundles being drawn and aligned first reinforcement fibers;
• and first thermoplastic resin, with which at least each of the reinforcement fiber bundles is impregnated;
• and a second composite material including second reinforcement fibers that are arranged at random in second thermoplastic resin, wherein
• the first composite material used includes a plurality of bores formed on a surface thereof to be bonded to the second composite material,
• when the first composite material and the second composite material are bonded, at least the second thermoplastic resin is softened so that the second reinforcement fibers and the second thermoplastic resin enter into the bores, followed by pressurizing of the first composite material and the second composite material and
• the fibrous substrate is manufactured by stacking a plurality of woven substrates with reinforcement fiber bundles woven therein, and the woven substrates are woven with the reinforcement fiber bundles so that a woven substrate to be bonded to the second composite material of the plurality of woven substrates has gaps between the reinforcement fiber bundles larger than gaps between the reinforcement fiber bundles of the other woven substrates so as to form the plurality of bores.