A sandwich panel that autonomously repairs sudden large holes and defects for tankers and pipelines carrying hazardous matter

Özer H., Kuzu E., Özada Ç., Ünal M., Kasım H., Yazıcı M.

Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications, cilt.236, sa.10, ss.2002-2016, 2022 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 236 Sayı: 10
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1177/14644207221092581
  • Dergi Adı: Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, ABI/INFORM, Aerospace Database, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.2002-2016
  • Anahtar Kelimeler: Geometric self-healing, self-healing, macro capsule, polyurethane, sandwich structure, honeycomb, impact penetration test, SELF-HEALING MICROCAPSULE, AIR-FLOW, ENERGY-ABSORPTION, COMPOSITE, IMPACT, BEHAVIOR, EPOXY, PERFORMANCE, BEAMS, MODEL
  • Bursa Uludağ Üniversitesi Adresli: Evet

Özet

© IMechE 2022.The self-healing of micro and macro cracks is vital for eliminating defects such as damage progression and loss of strength in structures. In this study, a polyurethane (PU) based geometrically self-healing sandwich structure was developed. The geometric healing agent, PU resin and activator, were filled into macrocapsules, and these capsules were filled into the Aluminum (Al) honeycomb cells. Self-healing of structural strength, large holes and cracks in developed sandwich structures were investigated by performing quasi-static compression and impact penetration tests. The sandwich structure with a self-healing capsules-filled core was damaged by subjecting it to quasi-static and penetration impact loads, and the healing agents in the broken capsules were mixed. The damage in the specimen was removed by geometric self-healing. Liquid and air permeability tests were applied to the PU foam used as a healing agent. No liquid permeability was observed in the structure. In addition, significant reductions in air permeability were obtained. Scanning electron microscope images were used to explore the characterization of the PU foam structure cells.