An underpressure generator of blast wave and its application
- VernacularTitle:冲击波负压发生装置及其应用
- Author:
Junkui ZHANG
;
Zhenguo WANG
;
Huaguang LENG
- Publication Type:Journal Article
- Keywords:
blast wave;
underpressure;
blast injury;
pulmonary injury
- From:Journal of Third Military Medical University
1988;0(06):-
- CountryChina
- Language:Chinese
-
Abstract:
A generator has been designed to generate simulating underpressure of blast wave and applied for the study of underpressure injuries on animals.The generator is composed of a vacuum pump,a hypotcnsive chamber,an experimental chamber,a membrane-rupturing device and a pressure-measuring system.Its operating principle is as follows:When the pressure of the hypotensive chamber is being decreased by the drawing of the vacuum pump to a given level .the membrane separating the hypotensive chamber and the experimental chamber is rapidly perforated by a sharp pointer.Underpressure occurs in the experimental chamber where the animal is fixed as soon as the pressure changes instantaneously.The range of the physical parameters of the simulated underpressure are -13 to -90 kPa for the peak level,1 ms to 90 ms for the decreasing time,and 14 ms to 2000 ms for the duration.Animal experimentation revealed that this device is capable of inflicting injuries and verified the possibility that the underpressure of blast waves can result in injuries.
