Why theories of failure have been developed from 1-D tensile testing. Why can't we go 2-D testing or 3-D testing?
I am just asking why we are using theories of failure to determine 2-D faliure stresses why not practically test it as it is done with 1-DJBA said:Can you give any examples of where these additional types of testing would be beneficial?
I have a just simple question why theories of faliure was developed for 2-D and 3-D failure??Nik_2213 said:There was recent work on why bent spaghetti shatters rather than 'just' snaps.
IIRC, they found that applying torsion to um, pre-stress it made it snap clean when bent...
Per OP's query, I think the answer lies in the study of 'fatigue', where unfortunate shape concentrates flexure damage to initiate failure. Once that begins, a simpler model may approximate...
The purpose of a tensile test is to determine the mechanical properties of a material, specifically its ability to withstand tension or stretching forces. This allows for the evaluation of a material's strength, ductility, and elasticity.
A ductile material is able to undergo significant deformation before failing, while a brittle material will fail suddenly and without warning when subjected to stress. Ductile materials have a higher ability to absorb energy and are more commonly used in structural applications.
The main types of failure in a material are tensile, compressive, shear, and fatigue. Tensile failure occurs when a material is pulled apart, compressive failure occurs when a material is crushed, shear failure occurs when a material is subjected to parallel forces in opposite directions, and fatigue failure occurs when a material is subjected to repeated cyclic loading.
Different theories of failure, such as the maximum normal stress theory, maximum shear stress theory, and maximum strain energy theory, provide mathematical models that predict when a material will fail under different types of loading. These theories take into account different factors such as stress levels, material properties, and loading conditions to determine the point at which a material will fail.
The results of a tensile test can be affected by factors such as the speed of loading, temperature, and the presence of defects or imperfections in the material. The dimensions and shape of the test specimen can also impact the results. It is important to carefully control these factors in order to obtain accurate and reliable results from a tensile test.