Equation icon  Beam theory method for composite testing

 
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Resource type: Equation
Description: The Double Cantilever Beam (DCB) test is used to assess the mode I failure strength of a composite sample. This equation gives a rough value for the mode I fracture energy, as it assumes that the beam is perfectly built in at the crack tip.

TeX format: {G_{Ic} = \frac{3 P \delta}{2Ba}}

GIc {G_{Ic}} = mode I fracture energy (J.m-2) {J.m^{-2}}
P {P} = force (N) {N}
δ {\delta} = displacement at point of force (m) {m}
B {B} = sample width (m) {m}
a {a} = distance from P to crack tip (m) {m}

Keywords: DCB • double • Cantilever • beam • testing • mechanical • composites
Categories: Science approaches
Materials > Hybrids > Composites
Testing, analysis & experimentation > Mechanical testing
Created by: The University of Liverpool
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Date created: 18 August 2010
Date added: 14 September 2010
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Resource ID: 3208