ceramics
Enhancement of hydroxyapatite dissolution through structure modification by Krypton ion irradiation
Heavy ion irradiation can be used to modify the atomic structure of a material and improve its dissolution characteristics as shown here. This has implication for the design of bioceramics
Additive manufacturing of ceramics from preceramic polymers
Additive manufacturing of ceramics from preceramic polymers
Following extensive research by our outstanding doctoral candidate here, Dr. Wang, a publication in the journal Additive Manufacturing is now in press.
Two new PhD positions in bioinspired architectured materials and structures, McGill University
We have new openings for two PhD students –fully funded - in the Laboratory of Advanced Materials and Bioinspiration at McGill University, starting Fall 2018 (Application deadline: 01/15/2018)
Postdoc on mechanical challenges in energy conversion technologies
Greetings
We are looking for a new postdoc to work on mechanical challenges in energy conversation technologies.
If you are interested you can take a closer look at the job description here:
http://www.dtu.dk/job/job?id=977f380d-dbcd-41f5-a8cc-78315cff25e1
Best regards
Henrik Lund Frandsen
Extended abstract deadline for CERMODEL2017 congress (Trento, Italy, July 26-28, 2017)
Webpage: http://events.unitn.it/en/cermodel2017
Extended deadline for 1 page-abstract submission: March 30, 2017
Thermo-mechanical response: Role of Porosity and Microcracking (in particular)
Below are references to some of our ongoing work that is published and is related to study the role of microcracking (in particular) and porosity to the thermo-mechanical response of functional ceramics. This study is relevant to understand the structural reliability of the systems such as the SOFC's (solid oxide fuel cells) and DPF's (diesel particulate filters).
Dependence of fracture energy of ceramic on loading condition?
Literature suggests that the fracture strength of the ceramic tends to be higher in a dynamic loading condition than in static condition. This relates to the increase in the fracture energy in dynamic processes. Literature refers to an inelastic response prior to failure (Hugoniot elastic limit) the reason behind increased strength. Can anyone explain the phenomenon in a more lucid way, or guide me to an appropriate reference to understand this?
Which is the best model to capture brittle fracture and failure of ceramics at moderate velocities?
Several models have been developed over the past decades to capture the fracture and failure of ceramic materials. JH2, JHB models are widely used for simulating the behavior of armor plates upon ballistic impact. I have a doubt regarding these models. Are these models only valid when the impact velocity is in the order of 1000m/s, as under such circumstances material transitions from elastic to elastic-plastic regime defined by the HEL Pressure? But what about when the impact velocity of the ceramic is around 300-400 m/s (a fraction of ballistic impact)?