Search results for " Piezoelectric transducers"

showing 4 items of 4 documents

A Strain Sensing Structural Health Monitoring System for Delaminated Composite Structures

2012

Structural Health Monitoring (SHM) for composite materials is becoming a primary task due to their extended use in safety critical applications. Different methods, based on the use of piezoelectric transducers as well as of fiber optics, has been successfully proposed to detect and monitor damage in composite structural components with particular attention focused on delamination cracks.In the present paper a Structural Health Monitoring model, based on the use of piezoelectric sensors, already proposed by the authors for isotropic damaged components, is extended to delaminated composite structures. The dynamic behavior of the host damaged structure and the bonded piezoelectric sensors is m…

Damaged componentComposite materialMaterials scienceOptical fiberElectric sensing devicePiezoelectric sensorComposite numberDelaminated composite structureDynamic behaviorStructural healthStructure (composition) Piezoelectric transducersBoundary elementlaw.inventionSafety critical applicationlawStructural health monitoring systems Boundary element methodStructural componentDynamic loadSettore ING-IND/04 - Costruzioni E Strutture AerospazialiBoundary element methodStructural health monitoringbusiness.industryDelamination lengthIsotropyDelaminationDamaged structureGeneral MedicineStructural engineeringPiezoelectricityMechanical engineeringPrimary taskDynamic responseDelaminationDual reciprocityStrain sensingStructural health monitoringbusinessPiezoelectric sensorApplied Mechanics and Materials
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Piezoelectric Rainfall Energy Harvester Performance by an Advanced Arduino-Based Measuring System

2018

This paper presents the performances of rainfall energy harvesting through the use of a piezoelectric transducer and an Arduino-based measuring system. Different studies agree on the possibility of generating electricity from rainfall, but to date, a study on measuring the quantity of energy produced during rainfall is still missing. The present study begins with results obtained from laboratory researchers using piezoelectric transducers and oscilloscopes, finalized to measure the energy produced from a single raindrop, and concludes with an ad hoc Arduino-based measuring system, aimed to measure the actual amount of electrical energy produced by a piezoelectric transducer that is exposed …

EngineeringStreRain02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciPiezoelectric materialSettore ING-INF/01 - Elettronica01 natural sciencesIndustrial and Manufacturing EngineeringAutomotive engineeringEnergy measurementpiezoelectric sensorArduino0103 physical sciencesEnergy harvesting; Energy measurement; Piezoelectric materials; piezoelectric sensor; Piezoelectric transducers; Rain; Stress; Control and Systems Engineering; Industrial and Manufacturing Engineering; Electrical and Electronic EngineeringElectrical and Electronic EngineeringOscilloscope010302 applied physicsEnergy harvestingbusiness.industryElectric potential energyElectrical engineeringPiezoelectric transducer021001 nanoscience & nanotechnologyPiezoelectricitySettore ING-IND/31 - ElettrotecnicaElectricity generationTransducerControl and Systems Engineering0210 nano-technologybusinessEnergy harvestingEnergy (signal processing)IEEE Transactions on Industry Applications
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A Study on the Measurement Instrumentation for a Custom-Made Bipendulum Impact Testing Machine

2008

Experimental investigations of structures under impact loads are normally carried out by means of drop-weight testing rigs, which are often tailor made, and require sensors for fast transient measurement of mechanical quantities (namely, force, displacement, velocity, and absorbed energy). Since these tests are quite expensive, time consuming, and, often, not repeatable, the sensors must provide reliable and interpretable results in the first trial. In this paper, a thorough study on the measurement instrumentation suitable to carry out reliable low-velocity impact tests by means of a custom-made bipendulum impact testing machine is presented. Attention has been focused on the choice of the…

Piezoelectric transducersComputer scienceImpact measurements; Instrumented impact testing; Optical velocity sensors; PVDF force sensors; Piezoelectric transducers; Transient measurementsImpact measurementsMechanical engineeringAccelerometerLoad cellFriction lossDynamic load testingTransducerOptical velocity sensorsElectronic engineeringCalibrationPVDF force sensorsTransient measurementsInstrumentation (computer programming)Electrical and Electronic EngineeringImpactInstrumentationInstrumented impact testing
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SVILUPPO DI UN SISTEMA DI ENERGY HARVESTING DALLA PIOGGIA

2014

Settore ING-IND/31 - ElettrotecnicaEnergy Harvesting Piezoelectric transducers PVDF
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