Comparison of Impact Damage Resistance and Tolerance of 3D Woven Composites Using Static and Dynamic Short Beam Shear Tests

2011 ◽  
Author(s):  
Timothy Walter ◽  
Ghatu Subhash ◽  
Bhavani Sankar ◽  
Chian Yen
Keyword(s):  
Impact Damage ◽  
Woven Composites ◽  
Shear Tests ◽  
Damage Resistance ◽  
Short Beam ◽  
Beam Shear ◽  
3D Woven Composites

A Novel Method for Dynamic Short-Beam Shear Testing of 3D Woven Composites

2012 ◽  
Vol 53 (3) ◽  
pp. 493-503 ◽  
Author(s):  
T. R. Walter ◽  
G. Subhash ◽  
B. V. Sankar ◽  
M. C. Song ◽  
C. F. Yen
Keyword(s):  
Woven Composites ◽  
Shear Testing ◽  
Short Beam ◽  
Beam Shear ◽  
3D Woven Composites ◽  
Novel Method

scholarly journals Monotonic and cyclic short beam shear response of 3D woven composites

2010 ◽  
Vol 70 (15) ◽  
pp. 2190-2197 ◽  
Author(s):  
T.R. Walter ◽  
G. Subhash ◽  
B.V. Sankar ◽  
C.F. Yen
Keyword(s):  
Woven Composites ◽  
Shear Response ◽  
Short Beam ◽  
Beam Shear ◽  
3D Woven Composites

Effect of Electrospun Fibers on the Interlaminar Properties of Woven Composites

2008 ◽  
Vol 47-50 ◽  
pp. 1031-1034 ◽  
Author(s):  
Ajit D. Kelkar ◽  
Ram Mohan ◽  
Ronnie Bolick ◽  
Sachin Shendokar
Keyword(s):  
Composite Laminates ◽  
Hybrid Composites ◽  
Electrospun Fiber ◽  
Low Velocity Impact ◽  
Woven Composites ◽  
Shear Tests ◽  
Fiber Glass ◽  
Electrospinning Technique ◽  
Short Beam ◽  
Beam Shear

Failure by delamination of composite laminates due to low velocity impact damages is critical because of the subsurface nature of delamination. Traditional methods such as stitching and Zpinning, while improving interlaminar properties in woven composites, lead to a reduction of the inplane properties. To alleviate these problems, use of Tetra Ethyl Orthosilicate (TEOS) nano fibers manufactured using electrospinning technique in fiber Glass-Epon composite laminates is investigated for their potential to improve the interlaminar properties. Electrospun coated fiber glass woven mats are impregnated with epoxy resin using Heated-Vaccum Assisted Resin Transfer Moulding (H-VARTM) process. The interlaminar properties of the nano engineered hybrid composites obtained using ASTM Double Cantilever Beam (DCB) tests and short beam shear tests are compared with those without the presence of electrospun fiber layers, to study their influence. The short beam shear tests revealed a 20% improvement due to presence of TEOS interlaminar electrospun nanofibers. It is also noteworthy that fibers cured at different temperature levels had variation in performance as observed in MSBS test results.

Mechanical properties of 3D-woven composites with guide sleeves

2016 ◽  
Vol 54 (12) ◽  
pp. 1571-1578
Author(s):  
Xiaochuan Wu ◽  
Zhongde Shan ◽  
Feng Liu ◽  
Yuan Wang
Keyword(s):  
Shear Fracture ◽  
Woven Composites ◽  
Tensile Fracture ◽  
Woven Composite ◽  
Compression Properties ◽  
Short Beam ◽  
Beam Shear ◽  
3D Woven Composites ◽  
Interlaminar Shear ◽  
3D Composite

In this study, the preforms of 3D woven composite materials were made by a flexible oriented 3D composite woven process. The vacuum-assisted resin infusion (VARI) process was used to impregnate the preforms. The short-beam shear test, the compression test, and SEM were used to investigate the interlaminar shear performance and the compression behavior of the 3D woven composite with guide sleeves, and the effect of the guide sleeves on the above properties. It is indicated that the interlaminar shear behavior of 3D woven composites with guide sleeves showed the typical fracture characteristics of a pseudoplastic material. And the fracture modes of interlaminar shear mainly include interlaminar shear fracture and tensile fracture of fibers at the bottom. The interlaminar shear strength of materials increased with the diameter and interval of guide sleeves decreasing. Furthermore, the loss of in-plane compression properties of the materials brought by guide sleeves could be effectively avoided by reasonable control of the diameter and the volume fracture of guide sleeves.

scholarly journals A Comparison between Interlaminar and In-plane Shear Strength of Unidirectional Glass Fibre-epoxy

1994 ◽  
Vol 3 (2) ◽  
pp. 096369359400300 ◽  
Author(s):  
Michael R. Wisnom ◽  
M. I. Jones
Keyword(s):  
Shear Strength ◽  
Cross Section ◽  
Glass Fibre ◽  
Shear Tests ◽  
Plane Shear ◽  
Short Beam ◽  
Unidirectional Glass ◽  
Beam Shear

Short beam shear tests have been carried out on square cross-section specimens cut from a 32 ply plate. By rotating the beams through 90° both interlaminar and in-plane strength can be measured with identical specimens. The in-plane shear strength was found to be at least 10% higher than the interlaminar strength.

In situ study of short-beam shear tests for composite materials

1995 ◽  
Vol 55 (4) ◽  
pp. 343-348 ◽  
Author(s):  
S.L. Bai ◽  
V. Djafari ◽  
M. Andréani ◽  
D. François
Keyword(s):  
Composite Materials ◽  
Shear Tests ◽  
In Situ Study ◽  
Short Beam ◽  
Beam Shear

scholarly journals Effect of off-axis angle on low-velocity impact and compression after impact damage mechanisms of 3D woven composites

2020 ◽  
Vol 192 ◽  
pp. 108672 ◽  
Author(s):  
Diantang Zhang ◽  
Yuanhui Gu ◽  
Zhongwei Zhang ◽  
Minghao Jia ◽  
Songlin Yue ◽  
...  
Keyword(s):  
Impact Damage ◽  
Low Velocity Impact ◽  
Woven Composites ◽  
Low Velocity ◽  
Damage Mechanisms ◽  
Velocity Impact ◽  
Compression After Impact ◽  
3D Woven Composites

Short beam shear tests of graphite fiber composites

1971 ◽  
Vol 3 (3) ◽  
pp. 187-208 ◽  
Author(s):  
B.K. Daniels ◽  
N.K. Harakas ◽  
R.C. Jackson
Keyword(s):  
Fiber Composites ◽  
Graphite Fiber ◽  
Shear Tests ◽  
Short Beam ◽  
Beam Shear
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