Piezoelectric transducer (PT) is the key component in power ultrasonics. Its vibration amplitude directly reflects performance of transducer. The real time measurement seldomly reported and difficult to be realized due high frequency confined space accommodate a sensor. Currently, there are no viable solutions for monitoring when tool engaged material. We present time, low-cost strategy PT, inc...

This paper present test and analyses of piezoelectric transducers tile with drop technique. was tested together bending mechanism. The mechanism designed using SolidWork software manufactured by employing 3D printer technology to conduct the evaluation. connected in a parallel configuration inserted employed this various loads speeds. conducted based on free fall concept. A wooden box used as g...

Abstract Acoustic underwater propulsion systems based on an ultrasonic transducer have been studied. In previous research, the self-propelled acoustic swimmer using thickness-vibration-mode is evaluated widely. The excited in thickness and radial direction. Because system driving force, vibration direction hard to provide thrust. this study, a cylindrical transducer, pure longitudinal vibrator,...

A simple instrument for measuring adductor pollicis tension in children has been devised. The thumb sensor utilizes a thin conical rubber seal obtained from a 5, 10 or 20 ml Becton Dickinson syringe. A syringe barrel of similar size, fixed at right angles to the sensor, forms a handle for the fist. The sensor is linked to a pressure transducer with non-compliant tubing. Pressure output of the s...

A force transducer was developed to measure bite force in dogs. A total of 101 readings was obtained from 22 pet dogs ranging in size from 7 to 55 kg. Bite forces ranged from 13 to 1394 Newtons with a mean for all dogs of 256 Newtons and a median of 163 Newtons. Most measurements fell within the low end of the range, with 55% of the biting episodes less than 200 Newtons and 77% less than 400 Ne...

We study the interaction distance in the lateral force detection, using a standard quartz tuning fork as a force transducer. That is the distance at which the interaction sample-probe starts to be detected. We study in particular the dependence on the approaching angle. For angles smaller than 0.366 radians, we found an exponential behavior of the interaction distance as a function of the appro...

Three Methods for evaluating the dynamic response of force transducers against varying force are described in this paper. In all methods, the inertial force of a mass is used as the known dynamic force, and this reference force is applied to a force transducer under test. The inertial force is measured highly accurately as the product of the mass and the acceleration. An aerostatic linear beari...