Search
Now showing items 21-30 of 3275
Development of a portable hardness tester for wood using displacement transducer
(2014-01-01)
Hardness is largely used in material specifications. Specifically for timber, Janka hardness is traditionally performed. More recently, international studies have reported the use of Brinell hardness for timber quality ...
Analysis of 1-3 piezocomposite and homogeneous piezoelectric rings for power ultrasonic transducers
(Associação Brasileira de Engenharia e Ciências Mecânicas - ABCM, 2009)
Some power ultrasonic transducers, such as Tonpilz transducers, require high-power transmitting capability as well as broadband performance. Optimized vibrational modes can achieve these requirements. This work compares ...
Development of a piezoelectric transducer coupling system for structural health monitoring applications
(2019-10-01)
Piezoelectric transducers have been widely used in structural health monitoring (SHM) frameworks. Recently, preliminary applications of these devices have emerged in the field of ultrasonic waves based on transmitter/receiver ...
Sensitivity Enhancement of Piezoelectric Transducers for Impedance-Based Damage Detection via a Negative Capacitance Interface
(2020-12-01)
Piezoelectric transducers are used in many applications due to electromechanical coupling, which allows mechanical and electrical quantities to be related. This principle is used in the development of structural damage ...
Performance of three transducer mounting methods in impedance-based structural health monitoring applications
(2017-10-01)
Piezoelectric transducers are widely used in many nondestructive methods for damage detection in structural health monitoring applications. Among the various methods for detecting damage, the electromechanical impedance ...
A load cell for grain-propelled ballistic rocket thrust measurement
(2005-12-01)
A 1000-kgf resistive strain-gauge load cell has been developed for quality testing of rocket propellant grain. A 7075-T6 aluminum alloy has been used for the elastic column, in which 8 uniaxial, 120-Ω strain gauges have ...
Teds-easy - descrição automática de transducer electronic data sheet
(Universidade Estadual Paulista (UNESP), 2014)
Measurement of unbalanced voltages in three-phase induction motors using acoustic transducers and zero-crossing-weighted energy
(2021-08-23)
In modern industries, transducers and measurement systems have been largely applied for equipment monitoring. In this context, three-phase induction motors (TIMs) are the main focus of predictive maintenance due to their ...