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Questions related from Jingdong Hu
I have a tensile testing machine that can only test dog-bone tensile sample (i.e. only can pull the sample in one direction). How can I modify the sample so as to create a multiaxial stress field...
12 December 2016 2,969 4 View
I have a wonder that if there are two vacancies in the nearby lattice site, they will go together or leave apart. I draw a picture to show my question. If they are go together, does this...
12 December 2016 7,859 1 View
I'm studying in some alloy's microscope mechanical properties. I find those two material parameter: surface energy and grain boundary energy are used in many theories. I'm wondering how could I...
10 October 2016 5,621 3 View
Grain boundary and twinning boundary both are the boundary also called plane defects. Why twinning boundaries have a good resistance to creep but grain boundary not?? Can anybody tell me the...
06 June 2016 8,481 5 View
I recently learn some dislocation theory, and find that crystals have plasticity due to its imperfection, in other words, its atoms array disorder. I wonder if we now have a perfect crystal...
06 June 2016 2,081 6 View
I just read some paper about creep in very low temperature and find it interesting. Though my teacher had told me that plastic deformation only occurs under the stress beyond yield stress, I still...
05 May 2016 7,091 15 View
I want to carry on a in-situ experiment in high temperature (about 200℃) by SEM. I want to know whether there will be a severe influence of resolution caused by such a temperature. Dose anyone...
05 May 2016 3,343 5 View
