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Quantifying the effect of tow architecture variability on the performance of biaxially braided composite tubes

Journal Article · · Composites Part B: Engineering
 [1];  [2];  [2]
  1. Univ. of Virginia, Charlottesville, VA (United States). Dept. of Mechanical and Aerospace Engineering; Univ. of Virginia, Charlottesville, VA (United States)
  2. Univ. of Virginia, Charlottesville, VA (United States). Dept. of Mechanical and Aerospace Engineering

Targeted experiments are performed with stereoscopic digital image correlation to quantify the effect of irregular braid structure on the local surface mechanical response of carbon-fiber reinforced epoxy composite tubes. Virtual models comparing both nonuniform and uniform tow structure of the outer braid of each specimen are integrated into numerical simulations similar to experiments. Experimental and numerical results agree well. Statistical tests are used to support correlations between as-manufactured braid variation ranges to local increases in stress up to 18% compared to an ideal, uniform structure in the elastic regime. Results support improved manufacturing and modeling efforts of defect sensitive braided composites.

Research Organization:
Univ. of Virginia, Charlottesville, VA (United States)
Sponsoring Organization:
USDOE Office of Nuclear Energy (NE)
Grant/Contract Number:
NE0008706
OSTI ID:
1848097
Alternate ID(s):
OSTI ID: 1811092
Journal Information:
Composites Part B: Engineering, Journal Name: Composites Part B: Engineering Journal Issue: C Vol. 201; ISSN 1359-8368
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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