Impact Factor (2025): 6.9
DOI Prefix: 10.47001/IRJIET
Due to a
wide and rapid spread of Covid-19 virus, the world exposure suffering from the
severe shortage not only for those personal protective equipment that are
normally used in hospitals but also extended to the care homes, and because the
global rollout of the harmful virus around the world, the number of cases of
for pandemic covid-19 is rapidly increased in most countries. The motivation of
the current work provide a design of an efficient tools that can overcome many
issues concerned with the distribution of virus, and therefore to suppress the
prevalence of virus through apply the health rules for quarantine and safety.
Ultrasound power technique in general, specifically ultrasonic power remains
one of the efficient and reliable processes that can be performed in a wide
range of applications such as medical, engineering and manufacturing, which it
entered directly in processing different kinds of medicals stuff such as
manufacturing medical masks and other accessories beside their other
applications in most engineering and industrial fields, etc. The advantage of
this technique is crucial and essential in produce protect things required for
general purposes like medical masks and their supplements. Design an efficient
tool that can be works on the principle of ultrasonic power with providing high
performance through add slots will directly leads to enhance many criteria
which are benefit in producing large numbers of medical accessories such as
facial masks with consuming minimum
amount of materials, cost and time. This work presents a study based on
design a wide block horn have double slots and an exponential stepped profile,
which the horn is modelled, analysed, fabricated based on selecting of
aluminium type 7075 as horn materials and their vibration characteristics such
as natural frequency and displacement are successfully extracted, using finite
element model. A correlation between the design variables and characteristics
of the proposed block horn is obtained through perform sensitivity analysis and
investigation of the horn response surface. The simulation program of
commercial code ANSYS was performed successfully to characterize the mode
shapes of the selected horn models and their data discussion was confirmed
experimentally using Doppler effect of 3D laser vibrometer to extract horn measurements.
The correlation between electrical impedance and experimental analysis were
successfully identified with minimum percentage recoded a value of 2 % varied
from the natural frequency of vibrating horn. Optimizing slots position of the
designing block horn have been led to significant enough frequency separation
measured accordingly to the exciting axial mode with sufficient uniformity of
displacement amplitude and minimum stress identified far away from the horn
tip; this is recommended in the field of mass production to allow sufficient
ultrasonic energy transferred to the working area. This work concludes that
designing an efficient horn will surely reflect on works in acceptable quantity
and quality processing parts such as in producing medical masks and their
supplements. In comparison with traditional processes, performing ultrasonic
power results in fewer additives attain joints material with no holes from
sewing, or weak strands, revoke the rise of adhesive cost and lower the glue
delivery system. In contrast, the ultrasonic process has pace cycle rate which
has capability in reducing of maintenance down time.
Country : Iraq
IRJIET, Volume 6, Issue 4, April 2022 pp. 20-29