Manufacturing Issues


Manufacturing Processes

Composite I-beams can be manufactured using following techniques:

  • Methods involving pre-preg tape
  • Pultrusion
  • Resin transfer molding
This projects focuses on methods involving pre-preg tape.

Methods Involving Pre-preg Tape
  • Adhesively Bonded Walls
      Layup in each wall is independent.
      It is possible to have identical layup in all walls without restrictions on fiber angles.
  • Continuous Flange/Web Plies
      Flange layup depends on the web layup.
      Possible abrupt change of fiber directions in flanges.
This project focuses on method involving continuous plies through web and flanges.


Adhesively bonded walls Plies extend through web and flanges

Beam Configurations
  • Configuration with continuous fiber directions in flanges
      This configuration is possible only if the web is a specially orthotropic or an antisymmetric laminate.
  • Configuration with abrupt change in fiber directions in flanges
      Configurations with the abrupt change of fiber directions in flanges are not considered in the current phase of the project.
Configuration with continuous fiber directions in flanges Configuration with abrupt change in fiber directions in flanges

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