An Investigation of Diaphragm Rupturing Phenomena for Generation of Shock Wave in the Shock Tube

Abstract

Shock Wave generation in shock tube now a days very important for Shock Wave study in different fields. For educational purpose the student must visualize what is Shock Wave and it’s properties but it is not possible for them to study shock wave outside every time so shock tube is used to study shock tube. On the other hand shock wave is so important for different Chemical study so in laboratory they need shock wave which is only possible by shock tube. In Pharmaceutical field Shock Wave is used very frequently. In medical field Shock Wave becoming very important, in different treatment shock wave is used which was not possible without shock wave. Such as Extracorporeal shock wave lithotripsy (ESWL) is a non-invasive treatment of kidney stones (urinary calculosis) and biliary calculi (stones in the gallbladder or in the liver) using an acoustic pulse. In metallurgy shock wave also used i.e. Shock hardening is a process used to strengthen metals and alloys, wherein a shock wave produces atomic-scale defects in the material's crystalline structure. There are also many applications. So for creating Shock Wave in shock we must produce supersonic flow in the shock tube. For this the pressure at the driven section must be high enough to create a supersonic air flow. Without high pressure larger MACH number is not possible which is more desirable in shock wave formation. In Shock Tube the Diaphragm is the main element which takes the pressure during shock wave generation, so Diaphragm should be much stronger to withstand this much pressure in the driven section of the shock tube. If the Diaphragm dose not capable of holding much pressure which is needed to generate shock then the shock tube experiment will be in vain. So for the proper shock wave creation we must select the Diaphragm suitably and also economically.