مورد إلكتروني
Analysis of piezoelectric transducers for Structural Health Monitoring (SHM) applications within highly loaded composite structures
| العنوان: | Analysis of piezoelectric transducers for Structural Health Monitoring (SHM) applications within highly loaded composite structures |
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| بيانات النشر: | Universitat Politècnica de Catalunya 2021-07-05 |
| تفاصيل مُضافة: | Universitat Politècnica de Catalunya. Departament de Ciència i Enginyeria de Materials DLR Institute of Composite Structures and Adaptive Systems Caner, Ferhun Cem Daniel Schmidt, Daniel Galiana Blanch, Shankar |
| نوع الوثيقة: | Electronic Resource |
| مستخلص: | An analysis on how different configurations of Acousto Ultrasonic (AU) transducers systems perform in Structural Health Monitoring (SHM) applications is being developed. The study consists in numerical simulations and experimental tests. Transducers analyzed are based on composite transducer construction with a Lead Titanate Zirconate (PZT) piezoceramics embedded in polyester/epoxy lay-up with copper mesh electrodes. The goal of the study is to investigate different transducer thicknesses and different bonding interface material configurations between the structure and the transducer in order to investigate its impact on the survivability and on the AU waves transmission of the transducers under high loaded composite structures. The analyzed configurations consist in two different approaches. The first approach uses three different transducer piezoceramic embedment thicknesses. In the second approach, three different adhesive types, two paste adhesives with low modulus and one adhesive tape with rheopectic properties are used. In each of the experiments, the results of the different configurations are compared to the results of a reference transducer system based in DuraActTM transducer composite from Invent GmbH. The analysis is divided in three main parts. First, the verification of the bonded transducer configurations measuring the electromechanical impedance. Second, the determination of the structure strain at the moment of the piezoceramic failure, through an uniaxial Carbon-fiber-reinforced polymer (CFRP) tension coupon test with the transducer configuration bonded in the middle, and using a Finite Element Model (FEM) to understand the strain distribution over the different components. Third, the AU wave emission and reception comparison between the different solutions of the transducers bonded to an aluminium plate and the solutions from the Finite Element Analysis (FEA). Results of the first part, measuring the electromechanical impedance, have permitted to |
| مصطلحات الفهرس: | Àrees temàtiques de la UPC::Enginyeria dels materials, Piezoelectric transducers, Structural Health Monitoring, Acousto Ultrasonic Guided Waves, Lamb Waves, Piezoceramic Transducers, DuraAct, Transductors piezoelèctrics, Master thesis |
| URL: | |
| الإتاحة: | Open access content. Open access content Attribution 3.0 Spain http://creativecommons.org/licenses/by/3.0/es Restricted access - author's decision |
| ملاحظة: | application/pdf English |
| أرقام أخرى: | HGF oai:upcommons.upc.edu:2117/357236 PRISMA-160792 1289854500 |
| المصدر المساهم: | UNIV POLITECNICA DE CATALUNYA From OAIster®, provided by the OCLC Cooperative. |
| رقم الأكسشن: | edsoai.on1289854500 |
| قاعدة البيانات: | OAIster |
| الوصف غير متاح. |