Carbon fiber-reinforced polymer pultrusions adhesively bonded inside aluminum joints: experimental and numerical study

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Abstract

In the context of lightweight structure design for the transportation and robotics industries, new types of composite structures are being developed, in the form of trusses made of fiber-reinforced polymer composite members of small diameter. The main objective of this work is to study adhesive joints, bonding pultruded composite tubes inside aluminum pieces, numerically and experimentally. More specifically, the objective is to determine which numerical model is able to predict the joint strength the most accurately, and to examine the influence of several design parameters on the strength and weight of the joints. With this purpose, samples are manufactured with varying dimensions, and tested in tension until failure. Next to the manufacturing numerical models using either a continuum mechanics or a damage mechanics (CZM) approach are built. The comparison of the numerical results with the experimental results show that the damage mechanics approach results in the most accurate joint strength predictions. It is also found that increasing the adhesive overlap length has the highest impact on increasing the joint strength, and that reducing the adherend thickness has the highest impact on reducing the structural weight, while preserving the joint strength.
Original languageEnglish
Title of host publicationProceedings of the 18th European Conference on Composite Materials
Subtitle of host publication24-28th June 2018, Athens, Greece
EditorsSimon Watkins, Abdulghani Mohamed
Number of pages8
Publication statusPublished - 2018
EventECCM18: 18th European Conference on Composite Materials - Athens, Greece
Duration: 24 Jun 201828 Jun 2018
Conference number: 18
http://www.eccm18.org/

Conference

ConferenceECCM18: 18th European Conference on Composite Materials
Abbreviated titleECCM18
CountryGreece
CityAthens
Period24/06/1828/06/18
Internet address

Keywords

  • Adhesive bonding
  • Carbon fiber-reinforced polymer
  • Finite Element Method
  • Cohesive Zone Modelling
  • Trusses

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    Lavalette, N., Bergsma, O., Zarouchas, D., & Benedictus, R. (2018). Carbon fiber-reinforced polymer pultrusions adhesively bonded inside aluminum joints: experimental and numerical study. In S. Watkins, & A. Mohamed (Eds.), Proceedings of the 18th European Conference on Composite Materials: 24-28th June 2018, Athens, Greece