Application of Ultrasonic Sensors in the Study of Physical Foaming Agents for Foam Extrusion

2001 ◽  
Vol 37 (5) ◽  
pp. 429-454 ◽  
Author(s):  
Abdelhadi Sahnoune ◽  
Jacques TatibouËt ◽  
Richard Gendron ◽  
AndrÉ Hamel ◽  
Luc PichÉ
Keyword(s):  
Ultrasonic Sensors ◽  
Foaming Agents ◽  
Foam Extrusion

Functional surfaces produced by foam coating

TAPPI Journal ◽  
2016 ◽  
Vol 15 (8) ◽  
pp. 515-521 ◽  
Author(s):  
EIJA KENTTÄ ◽  
HANNA KOSKELA ◽  
SARA PAUNONEN ◽  
KARITA KINNUNEN-RAUDASKOSKI ◽  
TUOMO HJELT
Keyword(s):  
Life Time ◽  
Silica Coating ◽  
Foaming Properties ◽  
Coated Paper ◽  
Paper Properties ◽  
Foaming Agent ◽  
Foaming Agents ◽  
Size Stability ◽  
Stability Measurement ◽  
Standard Paper

This paper reports experiments on silica coating formulations that are suitable for application as a thin pigment layer with foam coating technique on a paper web. To understand the foaming properties of nanosilica dispersions, the critical micelle concentration, foam half-life time, and foam bubble size stability were determined with three different foaming agents. The results indicate that the bubble stability measurement is a useful characterization method for foam coating purposes. Pilot foam coating trials were done and the effects of the chosen foaming agents were studied on the properties of the nanosilica-coated paper. The surface hydrophilicity of silica coated paper was related not only to silica pigment, but also to the chemical nature of the foaming agent. Standard paper properties were not affected by the thin silica coating.

Study on Identification of People and 3D Position Measurement with Ultrasonic Sensors and Kinect sensors

2014 ◽  
Vol 1 ◽  
pp. 247-250
Author(s):  
Takayuki Adachi ◽  
Masafumi Goseki ◽  
Hiroshi Takemura ◽  
Hiroshi Mizoguchi ◽  
Fusako Kusunoki ◽  
...  
Keyword(s):  
Position Measurement ◽  
Ultrasonic Sensors

scholarly journals Design and Development of a Low Cost, Non-Contact Infrared Thermometer with Range Compensation

Sensors ◽  
2021 ◽  
Vol 21 (11) ◽  
pp. 3817
Author(s):  
Nicholas Wei-Jie Goh ◽  
Jun-Jie Poh ◽  
Joshua Yi Yeo ◽  
Benjamin Jun-Jie Aw ◽  
Szu Cheng Lai ◽  
...  
Keyword(s):  
Measurement Accuracy ◽  
Low Cost ◽  
Common Symptom ◽  
Ultrasonic Sensors ◽  
Design And Development ◽  
Infrared Thermometer ◽  
Compensation Methods ◽  
Monitoring Devices ◽  
Distance Correction

Fever is a common symptom of many infections, e.g., in the ongoing COVID-19 pandemic, keeping monitoring devices such as thermometers in constant demand. Recent technological advancements have made infrared (IR) thermometers the choice for contactless screening of multiple individuals. Yet, even so, the measurement accuracy of such thermometers is affected by many factors including the distance from the volunteers’ forehead, impurities (such as sweat), and the location measured on the volunteers’ forehead. To overcome these factors, we describe the assembly of an Arduino-based digital IR thermometer with distance correction using the MLX90614 IR thermometer and HC-SR04 ultrasonic sensors. Coupled with some analysis of these factors, we also found ways to programme compensation methods for the final assembled digital IR thermometer to provide more accurate readings and measurements.

scholarly journals Impact of selective application with ultrasonic sensors on drift and liquid deposit in the cherry orchard

Poljoprivreda ◽  
2019 ◽  
Vol 25 (1) ◽  
pp. 89-98
Author(s):  
Davor Petrović ◽  
Mladen Jurišić ◽  
Vjekoslav Tadić ◽  
Anamarija Banaj ◽  
Monika Marković ◽  
...  
Keyword(s):  
Ultrasonic Sensors ◽  
Cherry Orchard

U radu je prikazan utjecaj dvaju različitih sustava raspršivanja (klasičnoga i senzorskog) pomoću raspršivača Tifone Vento 1500, s različito podešenim tehničkim čimbenicima raspršivanja, na zemljišno i zračno zanošenje tekućine te depozit u krošnji. Istraživanje je obavljeno prema ISO normi 22866:2005 u nasadu višnje. Analizom varijance ispitan je utjecaj norme raspršivanja kao čimbenik A (A1 - 250 l ha-1; A2 - 200 l ha-1), tip mlaznica kao čimbenik B (B1 - Lechler TR 8002C; B2 - Lechler ITR 8002C) i brzina zračne struje ventilatora kao čimbenik C (C1 - 18 m s-1; C2 - 12 m s-1). Raspršivanje je obavljeno sa 4-postotnom otopinom organske boje Tartrazine, a filter-papirićima je prikupljena zanesena tekućina. Optimalizacijom tehničkih čimbenika raspršivanja ostvaruje se maksimalno smanjenje od 36,59% za zemljišno zanošenje te 75,05% za zračno zanošenje na 5 m udaljenosti od tretiranoga reda. Eksploatacijom ultrazvučnoga senzorskog sustava za selektivnu aplikaciju zemljišno zanošenje smanjuje se za 43,35%. U ovome slučaju zračno zanošenje na 5 m udaljenosti od tretiranoga reda smanjuje se za 66,57% te 79,61% na udaljenosti od 10 m. Maksimalno reduciranje zračnoga zanošenja na 10 m ostvareno je uporabom ITR mlaznica analizirajući oba sustava raspršivanja. Eksploatacija ultrazvučnoga senzorskog sustava nije negativno utjecala na depozit u krošnji jer iz dobivenih rezultata nije zabilježena značajna razlika između dvaju sustava raspršivanja (0,5%). Opremanje konvencionalnih raspršivača naprednim sustavima za selektivnu aplikaciju značajno doprinosi preciznosti nanošenja sredstva za zaštitu bilja, a time i smanjenju negativnoga utjecaja na okoliš.

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