Equation icon  True stress

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Resource type: Equation
Description: Engineering stress is the form commonly used in applications, testing and stress-strain curves but does not take into account the reduction in cross-sectional area as a specimen plastically deforms. The true stress takes this factor into account.

TeX format: \sigma_{t} = \sigma{(1 + \varepsilon)}

σt {\sigma_t} = True stress (Pa) {Pa}
σ {\sigma} = Engineering stress (Pa) {Pa}
ε {\varepsilon} = Engineering strain

Keywords: stress • strain • deformation • elastic • stiffness • poisson • true
Categories: Science approaches
Science approaches > Deformation & failure > Elastic deformation
Science approaches > Deformation & failure > Plastic deformation
Processes > Shaping
Testing, analysis & experimentation > Electrical testing
Testing, analysis & experimentation > Mechanical testing
Created by: The University of Liverpool
License: This resource is released under the Creative Commons Attribution license (2.0 UK: England & Wales).
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Date created: 05 July 2010
Date added: 04 August 2010
Resource ID: 3166