Study on low-velocity impact and residual strength at high temperatures of composite laminates

In this paper, low-velocity impact characteristics and residual tensile/compressive strength of composite laminates at high temperatures are experimentally and analytically investigated. Low-velocity impact tests at room temperature were performed using a drop-weight apparatus, and residual strength tests at high temperatures were performed using a hydraulic MTS machine. The experimental results show that both residual tensile and compressive strength decrease monotonically with the increase of impact energy, while the variation trend of residual tensile/compressive strength of composite laminates keeps the same with longitudinal tensile/compressive strength with the increase of temperature. In addition, a new stress-based delamination failure criterion was established, in which the delamination is considered to be controlled by the difference between through-thickness stresses of adjacent layers. Once delamination occurs, only the elements below the interface are marked with delamination, whereas the material properties of the elements on both sides of the interface are reduced simultaneously. In this way, delamination can be defined more precisely without cohesive elements, and a considerable reduction in CPU time can be achieved. Combined with extended Hashin failure criteria, an integrated finite element model was established to simulate low-velocity impact damage and to predict residual tensile and compressive strength of composite laminates. The numerical results show good agreements with experimental data.

• Record URL:
  https://doi.org/10.1177/0954410017748184
• Record URL:
  https://journals.sagepub.com/doi/abs/10.1177/0954410017748184
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/19966973
• Supplemental Notes:
  • Reprinted by permission of Sage Publications, Ltd.
• Authors:
  • Weng, Jingmeng
  • Wen, Weidong
  • Zhang, Hongjian
• Publication Date: 2019-3

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 1106-1123
• Serial:
  • Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering
  • Volume: 233
  • Issue Number: 3
  • Publisher: Sage Publications, Incorporated
  • ISSN: 0954-4100
  • EISSN: 2041-3025
  • Serial URL: http://pig.sagepub.com/

Subject/Index Terms

• TRT Terms: Composite materials; Compressive strength; High temperature; Impact; Laminates; Residual strength
• Subject Areas: Aviation; Maintenance and Preservation; Materials;

Filing Info

• Accession Number: 01699681
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 25 2019 9:57AM