While going through the derivation of contact time for a hertzian contact as given in problem 3 at the following link http://s17.postimg.org/t1kq6mlxr/Capture.png , I am not able to understand how the integral form for contact time has come into picture. Can anyone explain the in-between steps to get the same? I understand that this is a very trivial problem but it will be a great help to understand the steps. Thanks.
Mladena Lukovic of Delft University of Technology (Netherlands) has successfully defended her thesis dealing with mechanics and physics of concrete repair systems on 6th of January. Her thesis can be downloaded at http://repository.tudelft.nl/view/ir/uuid:28b07d9b-c704-47fa-9ba3-cd9fd… , and is of interest to everyone dealing with discrete modelling and micromechanical testing of cementitious and other quasi-brittle materials.
Branko
Dear all,
Our group has just published a paper on experimentally-informed multi-scalle modelling of nuclear graphite in the journal of Engineering Fracture Mechanics. It can be of interest to anyone working on quasi-brittle fracture and materials such as graphite, concrete, rock, shale, or similar. It can be downloaded at:http://www.sciencedirect.com/science/article/pii/S0013794415007080
Regards,
Branko
A postdoctoral associate position is available at Department of Petorleum Engineering, Texas A&M University in the area of resistivity characterization of geomaterials. Experimental characterization at nano-scale will be combined with modeling techniques to get insight into electrical properties of geomaterials at fundamental length scales. Expected qualifications:A Ph.D. in materials science, civil engineering, geophysics or a related field is required.
The theme of the coming 37th Risø International symposium is the scientific basis for understanding the performance of composite materials.
Dear All,
Scientific context:
Building industry has to face more and more stringent requirements, including energy performance, structural safety and environmental impact. To this end, new materials and new technologies have emerged to help the construction firms meet these requirements. At the same time, many different teams or firms interact, most of the interaction being of non-cooperative nature.
Scientific context:
Building industry has to face more and more stringent requirements, including energy performance, structural safety and environmental impact. To this end, new materials and new technologies have emerged to help the construction firms meet these requirements. At the same time, many different teams or firms interact, most of the interaction being of non-cooperative nature.
