Fast and non-destructive ultrasonic test for face masks

COVID19 pandemic has increased the demand for general-use masks, boosting the supply of masks. CSIC has developed a fast test to efficiently ensure the quality of the product, allowing a level of production that meets the growing demand.

The developement allows a fast and simple ultrasonic test to be carried out for quality control in the manufacture of masks or to find out whether there have been changes in mask efficiency after being used or after a treatment such as disinfection. Image: PixabayThe scientists have developed a device and an indirect method to characterize the masks, and to classify and detect any alteration that may modify the expected behaviour of the mask. The invention allows a fast and simple ultrasonic test to be carried out for quality control in the manufacture of masks. Also, as a quick test to find out whether there are changes in mask efficiency with use or after a treatment such as disinfection.

Both device and procedure can be used to evaluate complete masks or the layers that form them, throughout the manufacturing process. 

One of its main features is that it allows a fast, non-contact, non-destructive and industrially compatible measurement that would allow 100% of the production to be tested in real time.

The developement enables an easy verification of the efficiency, filtering and breathability properties of the mask after a certain number of hours, or exposure to certain environmental conditions or a certain number of disinfection cycles.

It is an inexpensive, fast and non-destructive method to quickly verify filtration efficiency, integrity against disinfection methods, test the performance of new materials and membranes and optimise the use of materials.

Contact:

Abel Díaz Plaza
Deputy Vice-presidency
for Knowledge Transference
CSIC
Tel.: +34 915681521
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