Specimen alignment plays a critical role in material testing. If a specimen is not properly aligned prior to or during testing, the accuracy and the reliability of test results will be directly affected, and, depending on the method followed, results may not be acceptable. This post covers the effect of specimen misalignment on the test data, main reasons behind axial misalignment, and ways to improve alignment precision in mechanical test setups.
Our latest article in the Journal of Applied Physics is freely available for 14 days: https://aip.scitation.org/doi/10.1063/5.0072249
We conducted molecular dynamics simulations of plate impact tests of polyethylene to obtain molecular-level insights on two common approximations associated with the interpretation of shock pressure and spall strength. Our results revealed
(1) The free surface approximation can slightly underpredict the shock pressure in the polymer.
Meshfree analysis on complex geometries using physics-informed deep neural networks
Materials Today Communications (MTCOMM) call for papers
Special Issue on Advanced Welding and Joining Technologies
(Computational mechanics, structural optimization) Postdoc position in Hanyang university, South Korea (2022~)
This is Prof. Gil Ho Yoon (ghy [at] hanyang.ac.kr (ghy[at]hanyang[dot]ac[dot]kr); gilho.yoon [at] gmail.com (gilho[dot]yoon[at]gmail[dot]com), multiphysics.hanyang.ac.kr).
We are reporting nice and simple experiments to assess the reduction of shock energy of an impact passing through methylcellulose hydrogel. The temporary link is:
