Article
Acoustics
Jannes Daemen, Arvid Martens, Mathias Kersemans, Erik Verboven, Steven Delrue, Wim Van Paepegem, Koen Van den Abeele
Summary: In the context of designing a next-generation ultrasonic polar scan (UPS) measurement system for viscoelastic material characterization, a novel approach is proposed to improve data quality and ease data interpretation. A 3-D analytical model is used to simulate UPS experiments and determine optimal design parameters. Parameter studies show the importance of certain design parameters in accurately reconstructing plane wave characteristics of the sample.
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL
(2021)
Article
Acoustics
Robert Malkin, Brian Kappus, Benjamin Long, Adam Price
Summary: Air-coupled phased arrays are of growing interest for their applications in acoustic levitation and mid-air haptics. This study investigates the non-linear propagation effects in high amplitude focused fields, such as the generation of harmonic frequencies and acoustic saturation. Experimental work is conducted to analyze non-linearities at different focusing distances and driving amplitudes. The results show that saturation losses can be significant and suggest metrics to identify and quantify non-linearities in air-coupled arrays.
JOURNAL OF SOUND AND VIBRATION
(2023)
Article
Materials Science, Multidisciplinary
Frank Mevissen, Michele Meo
Summary: Creep damage is a main failure mode in gas turbines, resulting from high temperatures and mechanical loads. This study aims to clarify the creep behavior of Hastelloy X material and detect and evaluate creep damage with nonlinear ultrasonic modulation technique. The results show that pores and microcracks in grain boundaries spread from the outside to the inside, and molybdenum is identified as the main precipitation element. Harmonic frequencies offer a good prediction of pore sizes, while sideband frequencies react sensitively to damage density and area distribution. This study provides a method for early detection of creep damage and differentiation of different types of damage.
MATERIALS CHARACTERIZATION
(2022)
Article
Food Science & Technology
Zhiming Zhang, Junzhe Yu, Peng Cheng, Shuo Wang, Fangxue Hang, Kai Li, Caifeng Xie, Changrong Shi
Summary: The study found that increasing sugar dose and moderate sugar size enhanced moisture loss and solute uptake during solid osmotic dehydration, leading to more syrup production. Additionally, high sugar dose and small sugar size promoted the diffusion of polyphenols and flavonoids from jasmine to syrup.
FOOD AND BIOPROCESS TECHNOLOGY
(2022)
Article
Acoustics
Yi Quan, Chunlong Fei, Wei Ren, Lingyan Wang, Gang Niu, Jinyan Zhao, Jian Zhuang, Junshan Zhang, Kun Zheng, Pengfei Lin, Xinhao Sun, Qiang Chen, Zuo-Guang Ye, Tomoaki Karaki
Summary: The lead-free KNLN-BZ-BNT textured ceramic has high piezoelectric response, superior thermal stability, and excellent fatigue resistance, making it a promising candidate for high-frequency ultrasonic transducer applications.
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL
(2021)
Article
Acoustics
Jack Massaad, Paul L. M. J. van Neer, Douwe M. van Willigen, Nicolaas de Jong, Michiel A. P. Pertijs, Martin D. Verweij
Summary: This study investigates how utilizing generated harmonics can improve precision in ultrasonic flow measurements. Experimental results show that combining the second harmonic component with the fundamental component can provide more accurate flow measurements compared to estimates using the fundamental component alone.
Review
Chemistry, Analytical
Alicia Gardiner, Paul Daly, Roger Domingo-Roca, James F. C. Windmill, Andrew Feeney, Joseph C. Jackson-Camargo
Summary: Acoustic metamaterials are large-scale materials with small-scale structures that endow them with exceptional acoustic properties. Manufacturing these materials is challenging due to the multi-scale nature, requiring micron-scale resolution. Additive manufacturing techniques are being explored for creating various designs of acoustic metamaterials.
Article
Acoustics
Kshirod Kumar Dash, Anjelina Sundarsingh, G. V. S. BhagyaRaj, Vinay Kumar Pandey, Shaikh Ayaz Mukarram
Summary: In this study, the cape gooseberry was preserved by osmotic dehydration using a sugar solution and ultrasonication. The effects of various process parameters on weight loss, solid gain, change in color, and water activity were studied using response surface methodology (RSM) and adaptive neuro-fuzzy inference system (ANFIS). The ANFIS model outperformed the RSM model in predicting the responses of the osmotic dehydration process. By integrating genetic algorithm (GA), the optimal combination of independent variables was determined to be ultrasonication power of 282.434 W, immersion time of 50.280 min, solvent concentration of 55.836%, and solid to solvent ratio of 9.250 w/w.
ULTRASONICS SONOCHEMISTRY
(2023)
Article
Thermodynamics
Patipat Thanompongchart, Pakamon Pintana, Nakorn Tippayawong
Summary: This study investigated the application of ultrasonic vibration to pineapple drying and found that it can increase the dehydration rate at low temperatures, thus preserving the nutrients in the fruit. Combining ultrasonic vibration with a solar dryer can reduce drying time and increase the evaporation rate.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Geochemistry & Geophysics
Tatsu Kuwatani, Kenji Nagata, Toshimoto Sakai, Hikaru Iwamori
Summary: This paper introduces a Bayesian probabilistic framework for extracting detailed information about Earth materials from geophysical, petrological, and geochemical observations. Synthetic inversion tests show the accuracy of the proposed method. The method is useful for analyzing large amounts of geophysical data with relatively large uncertainties.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2023)
Article
Acoustics
Guanwen Sun, Hanyin Cui, Chao Li, Weijun Lin, Chang Su
Summary: This paper analyzes the effect of temperature on the acoustic dispersion of dilute gases theoretically and experimentally. The theoretical analysis applies the Navier-Stokes equation and Greenspan's theory to calculate the dispersive sound speed, concluding that temperature influences the molecular relaxation and rotational relaxation, changing the amplitude of acoustic dispersion. Experimental measurements of sound speed support the theoretical predictions, showing that both translational and rotational dispersions weaken as temperature decreases.
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2023)
Article
Agricultural Engineering
Qiaolan Sun, Xiaojie Yu, Long Zhang, Abu ElGasim A. Yagoub, Yuxin Tang, Hafida Wahia, Cunshan Zhou
Summary: This study investigated the effects of different pretreatments on the rehydration ability and physical and chemical properties of ginger slices. The results showed that vacuum combined with ultrasonic-assisted infiltration vacuum freeze-drying combined with hot air drying had the best effect.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Acoustics
Josep Rodriguez-Sendra, Ines Torres, Noe Jimenez, Salvatore Sauro, Francisco Camarena
Summary: The research evaluates the complete process of demineralization of human dentin under controlled laboratory conditions using pulse-echo ultrasonic technique. It measures the speed of sound in healthy and demineralized dentin tissue and characterizes the dynamical process of acid penetration. The technique opens new approaches to the assessment of demineralization caused by natural caries in vivo beyond artificial demineralization lesions.
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL
(2021)
Article
Agriculture, Multidisciplinary
Abhishek Chandra, Sourabh Kumar, Ayon Tarafdar, Prabhat K. Nema
Summary: Using ultrasound-assisted osmotic dehydration (USOD) followed by VD resulted in the shortest drying time with the highest retention of phenols and antioxidants. On the other hand, OD pretreatment followed by convective AD showed better color and texture characteristics in dried papaya slices.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2021)
Article
Acoustics
Francis A. A. Duck
Summary: This article argues that Paul Langevin is the originator of ultrasonic metrology. He established the theoretical foundation for using radiation pressure to measure acoustic power by considering energy density in a beam. He developed calibrated devices to measure acoustic power and intensity, patented piezoelectric non-resonant quartz hydrophones and quartz probes, and established an ultrasonics transducer laboratory. His contributions were crucial for modern ultrasonic metrology.
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL
(2023)
