0000000000019090

AUTHOR

Roberto Montanini

showing 3 related works from this author

Simultaneous measurement of temperature and strain in glass fiber/epoxy composites by embedded fiber optic sensors: I. Cure monitoring

2007

In this paper (Part I) the use of fiber optic sensors for real-time monitoring of the cure kinetics of GFRP composites is explored. The proposed sensing system allows the simultaneous measurement of both temperature and strain by monitoring the change in reflected wavelength from two coupled fiber Bragg grating (FBG) sensors that have been embedded into the composite laminate. Instrumented GFRP laminates with 12, 18 and 24 reinforcing plies, respectively, were prepared by means of the vacuum bagging technique. Samples were cured in a thermally controlled oven at 80 degrees C and 30 kPa for 240 min (isothermal stage) and then cooled down to ambient temperature by turning off the heating sour…

Materials scienceFiber Bragg grating (FBG) sensorsComposite numberGlass fiberFiber Bragg gratingComposite cure monitoringSettore ING-IND/12 - Misure Meccaniche E TermicheSITUTemperature mesurementGeneral Materials ScienceCure monitoringElectrical and Electronic EngineeringComposite materialBRAGG GRATING SENSORSCivil and Structural EngineeringOptical fiber sensorEpoxyFibre-reinforced plasticCondensed Matter PhysicsTHERMOSETFiber Bragg grating (FBG) sensors; Optical fiber sensor; Composite cure monitoring; Strain measurement; Temperature mesurementAtomic and Molecular Physics and OpticsMechanics of MaterialsFiber optic sensorvisual_artSignal Processingvisual_art.visual_art_mediumEPOXY-RESINStrain measurementStructural health monitoringFIBRE/EPOXY COMPOSITESSYSTEM
researchProduct

Misfit evaluation of dental implant-supported metal frameworks manufactured with different techniques: Photoelastic and strain gauge measurements

2016

This study aims to compare in-vitro the fitting accuracy of implant-supported metal frameworks used for full-arch orthodontic restoration. The hypotheses tested were as follows: (1) for a fixed implant morphology, strains developed within the framework depend on how the framework had been fabricated and (2) stresses transferred to the implant–bone interface are related to the amount of framework misfit. Metal frameworks were fabricated using four different manufacturing techniques: conventional lost-wax casting, resin cement luting, electrospark erosion, and computer-aided design/computer-aided manufacturing milling. Each framework was instrumented with three strain gauges to measure strai…

orthodontic restoration0301 basic medicineEngineering drawingMaterials sciencemedicine.medical_treatmentpassive fitStress (mechanics)03 medical and health sciences0302 clinical medicineSettore ING-IND/12 - Misure Meccaniche E TermichemedicineDental bridges orthodontic restoration full-arch implants passive fit edentulismComposite materialPolarization (electrochemistry)Dental implantStrain gaugeResin cementedentulismMechanical EngineeringSettore ING-IND/34 - Bioingegneria Industriale030206 dentistryGeneral Medicinefull-arch implant030104 developmental biologyCasting (metalworking)Dental bridge
researchProduct

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
researchProduct