Henry Tan's blog

This blog is on material behaviors under extreme loading.

an interesting puzzle for fun:

Lame’s classical solution for an elastic 2D plate, with a hole of radius a and uniform tensile stress applied at the far field, gives a stress concentration factor (SCF) of two at the edge of the hole. This SCF=2 is independent of the hole radius.

Consider what happened to this concentration factor if the radius a approaches infinitely small. The SCF is independent of a, so it remains equal to two even when the hole disappears.

US National Aeronautics and Space Administration
British National Space Centre
European Space Agency
China National Space Administration (English) (Chinese)
National Space Development Agency of Japan
India Space Research Organisation
United Nations Office for Outer Space Affairs

This blog focuses on the behaviors of energetic materials (such as solid rocket propellants, high explosives), shock waves,  and explosions. And also on the protections, from the design of protecting materials and structures.

Lecture notes:

The following is a link to a FEMA course

Building Design for Homeland Security Course

Exhibition on Alfred Nobel and the Nobel Prize in Literature

Nobel Prize information

Alfred Nobel, timeline

The conferences/seminars I attended that relate to the behaviour of energetic composite materials.

This blog is on catastrophic behaviors in nature.