Influence of cross-section on the impact and post-impact behavior of biocomposites bumper beams Articles uri icon

publication date

  • May 2022

International Standard Serial Number (ISSN)

  • 1537-6494

Electronic International Standard Serial Number (EISSN)

  • 1537-6532


  • The objective of this work is to analyze the influence of the cross-section of a bumper beam made of fully biodegradable composites. Flax/PLA bumper beams were manufactured with four types of cross-sections with different degree of roundness. Specimens were subjected to low velocity impacts and the post-impact behavior is evaluated under three-point bending tests. Results indicate that different cross-sections can be selected if the objective is to maximize the impact performance or the post-impact residual properties. The bumper beam with the higher roundness exhibits the best impact performance, while an intermediate section exhibits the best after impact residual mechanical properties.


  • Materials science and engineering


  • biocomposite; bumper beam; energy absorption; natural fibers