قاسمی یکلنگی, اکبر
دانشگاه تربیت مدرس
[ 1 ] - بررسی پارامترهای تاثیرگذار بر بلندگوی گرماصوتی گرافنی
بلندگوهای گرماصوتی نسل جدیدی از بلندگوهایی هستند که در سال‌‌‌های اخیر مورد توجه جامعه علمی قرار گرفته‌‌‌اند. این بلندگوها به دلیل عدم استفاده از قطعات مرتعش در تولید صدا و عدم نیاز به آهنربا، قابلیت کاربردهای مختلف در صنعت را دارند. با توجه به جدید بودن مبحث، نیاز به انجام بررسی‌‌‌های نظری در این زمینه بسیار احساس می‌‌‌شود. در پاسخ به این نیاز، در این مقاله از یک روش نظری برای بررسی اثر متغیرها...
[ 2 ] - Fabrication and investigation of a transparent and flexible loudspeaker and microphone based on carbon nanotube
Transparent acoustic sensors and actuators are a new generation of acoustic transducers that can create an evolution in the microphone and loudspeakers industries. These transducers with properties like transparency, flexibility, flatness, very low weight and thickness have a great potential for various applications like public speakers, active noise cancelation systems, displays, cell phones a...
[ 3 ] - Design and fabrication of an ultrasonic thermoacoustic generator using metal nanocoatings (Research Article)
In this paper, we design, simulate, and build an ultrasonic heat generator. In thermoacoustics, heat generated by the passage of alternating current through a thin conductor produces a sound wave. In this method, unlike other methods of sound production, moving parts are not used to vibrate air molecules, and as a result, the frequency response of these generators is flatter than other sound ge...
[ 4 ] - Acoustic damping performance of aluminum nanocomposite foams with different additive of carbon nanotubes and comparison that with conventional rockwool (Research Article)
Open cell aluminum foams have good acoustic dampening properties. In this research, in order to improve the sound damping capacity of these foams, 0.9, 1.5 and 3wt% carbon nanotubes were added to the aluminum foam. Foams were produced by the space holder method in powder metallurgy. The results showed that Al-0.9wt%CNT nanocomposite foam had the highest average sound transmission loss in the fr...
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