Coal-rock dynamic disasters caused by dynamic disturbance pose a serious threat to coal mine safety and infrastructure. In this paper, the dynamic compression test of coal is carried out around the ...

If you break it down, there are really only four elements an engine needs to run: fuel, air, spark and compression. Sounds simple, but if any one of these steps out of line, you can forget about your ...

The purpose of your engine is to compress fuel and air and then ignite it, creating heat energy that then makes mechanical motion. If your engine can't compress the air and fuel properly, the engine ...

I noted in a 2005 column (see "Current compression test methods" under “Editor's Pick,” at top right) that there are three basic methods of loading a composite material test specimen in compression: ...

The purpose of your engine is to compress fuel and air and then ignite it, creating heat energy that then makes mechanical motion. If your engine can't compress the air and fuel properly, the engine ...