Broadband Air-Coupled Ultrasound Emitter and Receiver Enable Simultaneous Measurement of Thickness and Speed of Sound in Solids [PDF]
Sensors, 2023 Air-coupled ultrasound sensors have advantages over contact ultrasound sensors when a sample should not become contaminated or influenced by the couplant or the measurement has to be a fast and automated inline process.
Klaas Bente, Janez Rus, Mate Gaal
exaly +4 more sources
Noncontact Damage Topography Reconstruction by Wavenumber Domain Analysis Based on Air-Coupled Ultrasound and Full-Field Laser Vibrometer [PDF]
Sensors, 2021 Noncontact ultrasonic detection technology is an effective method to detect damage in time. This paper proposes a noncontact damage detection system based on air-coupled ultrasound and full-field laser vibrometer, which realizes the excitation of ...
Dongmei Liang +2 more
exaly +4 more sources
Intelligent Optimization Design of a Phononic Crystal Air-Coupled Ultrasound Transducer. [PDF]
Materials (Basel), 2023 To further improve the operational performance of a phononic crystal air-coupled ultrasonic transducer while reducing the number of simulations, an intelligent optimization design strategy is proposed by combining finite element simulation analysis and artificial intelligence (AI) methods. In the proposed strategy, the structural design parameters of 1–
Wang J +6 more
europepmc +3 more sources
Air-Coupled Ultrasound Sealing Integrity Inspection Using Leaky Lamb Waves in a Simplified Model of a Lithium-Ion Pouch Battery: Feasibility Study. [PDF]
Sensors (Basel), 2022 Inspecting the sealing integrity of lead tabs is an important means of ensuring the reliability and safety of pouch-type lithium-ion (Li-ion) batteries with a thin multi-layered aluminum (Al) laminated film.
Cho H +5 more
europepmc +2 more sources
Air-coupled ultrasound detection using capillary-based optical ring resonators. [PDF]
Sci Rep, 2017 We experimentally demonstrate and theoretically analyze high Q-factor (~107) capillary-based optical ring resonators for non-contact detection of air-coupled ultrasound. Noise equivalent pressures in air as low as 215 mPa/√Hz and 41 mPa/√Hz at 50 kHz and
Kim KH +6 more
europepmc +2 more sources
Slight crack identification of cottonseed using air-coupled ultrasound with sound to image encoding. [PDF]
Front Plant Sci, 2022 Slight crack of cottonseed is a critical factor influencing the germination rate of cotton due to foamed acid or water entering cottonseed through testa.
Zhang C +6 more
europepmc +2 more sources
Development of ultrasound focusing discrete array for air-coupled ultrasound generation
Physics Procedia, 2010 AbstractThe technique and results of synthesis of ultrasound focusing discrete arrays for air-coupled ultrasound generation are presented. One of the arrays is an antenna 22 cm in diameter. It consists of 60 transmitters of Murata Company. The resonant frequency of each transmitter is 40 kHz, diameter is 16 mm.
Korobov, Alexander I. +2 more
exaly +2 more sources
Air-Coupled Ultrasound Spectroscopy Air Parameters Compensation Technique
IEEE Sensors JournalThe air-coupled resonance ultrasound spectroscopy (RUS) of thin plate thickness, density, ultrasound velocity and attenuation measurement are affected by air parameters. If air parameters are left unaccounted errors will occur. Conventional thermometer measurements are not efficient because temperature can vary faster than temperature sensor response ...
Zilvinas Nakutis +2 more
exaly +2 more sources
Testing Adhesive Bonded joints using Air-coupled Ultrasound
Research and Review Journal of Nondestructive TestingLightweight constructions offer the potential to save weight and thus climate-damaging CO₂ through less accelerated mass. Complex structures and hybrid material combinations are therefore being used in more and more applications. A key aspect of these structures are the joining processes used to connect different components made of various materials ...
Julian Ehrler, Marc Kreutzbruck
openaire +3 more sources
Ultrasonics Sonochemistry, 2021 This study aimed at investigating the performances of air drying of blackberries assisted by airborne ultrasound and contact ultrasound. The drying experiments were conducted in a self-designed dryer coupled with a 20-kHz ultrasound probe.
Yang Tao +7 more
doaj +1 more source