1) La descarga del recurso depende de la página de origen
2) Para poder descargar el recurso, es necesario ser usuario registrado en Universia


Opción 1: Descargar recurso

Opción 2: Descargar recurso

Detalles del recurso

Descripción

In the role of structural health monitoring (SHM), Acoustic Emission (AE) analysis is being investigated as an effective method for tracking damage development in large composite structures under load. Structures made using Pultruded Rod Stitched Efficient Unitized Structure (PRSEUS) for damage tolerant, light, and economical airframe construction are being pursued by The Boeing Company and NASA under the Environmentally Responsible Aircraft initiative (ERA). The failure tests of two PRSEUS substructures based on the Boeing Hybrid Wing Body fuselage concept were conducted during third quarter 2011 and second quarter 2015. One fundamental concern of these tests was determining the effectiveness of the stitched integral stiffeners to inhibit damage progression. By design, severe degradation of load carrying capability should not occur prior to Design Ultimate Load (DUL). While minor damage prior to DUL was anticipated, the integral stitching should not fail since this would allow a stiffener-skin delamination to progress rapidly and alter the transfer of load into the stiffeners. In addition, the stiffeners should not fracture because they are fundamental to structural integrity. Getting the best information from each AE sensor is a primary consideration because a sparse network of sensors is implemented. Sensitivity to stiffener-contiguous degradation is supported by sensors near the stiffeners, which increases the coverage per sensor via AE waveguide actions. Some sensors are located near potentially critical areas or "critical zones" as identified by numerical analyses. The approach is compared with the damage progression monitored by other techniques (e.g. ultrasonic C-scan).

Pertenece a

NASA Technical Reports Server (NTRS)  

Autor(es)

Juarez, Peter D. -  Horne, Michael R. - 

Id.: 69703675

Versión: 1.0

Estado: Final

Tipo:  application/pdf - 

Palabras claveAircraft Design, Testing and Performance - 

Cobertura:  Unclassified, Unlimited, Publicly available - 

Tipo de recurso: NF1676L-24893  -  Annual Technical Conference of the American Society for Composites; 19-22 Sep. 2016; Williamsburg, VA; United States  - 

Tipo de Interactividad: Expositivo

Nivel de Interactividad: muy bajo

Audiencia: Estudiante  -  Profesor  -  Autor  - 

Estructura: Atomic

Coste: no

Copyright: sí

: Copyright, Distribution as joint owner in the copyright

Formatos:  application/pdf - 

Requerimientos técnicos:  Browser: Any - 

Relación: [IsBasedOn] CASI

Fecha de contribución: 11-mar-2017

Contacto:

Localización:

Otros recursos del mismo autor(es)

  1. Simulation of Guided Wave Interaction with In-Plane Fiber Waviness Reducing the timeline for certification of composite materials and enabling the expanded use of adva...
  2. Advances in In-Situ Inspection of Automated Fiber Placement Systems The advent of Automated Fiber Placement (AFP) systems have aided the rapid manufacturing of composit...
  3. Composite Characterization Using Ultrasonic Wavefield Techniques The large-scale use of composite components in aerospace applications is expected to continue due to...
  4. Strain-Detecting Composite Materials A composite material includes a structural material and a shape-memory alloy embedded in the structu...
  5. Carbon Fiber TOW Angle Determination Using Microwave Reflectometry NASA's Advanced Composites Project is investigating technologies that increase automated remote insp...

Otros recursos de la mismacolección

  1. Launch Control System Master Console Event Message Reduction System monitoring and control (SMC) message browsers receive so many messages daily that operators d...
  2. System Testing of Ground Cooling System Components This internship focused primarily upon software unit testing of Ground Cooling System (GCS) componen...
  3. Small Payload Launch Integrated Testing Services (SPLITS) - SPSDL My experience working on the Small Payload Launch Integrated Testing Services project has been both ...
  4. Spaceport Processing System Development Lab The Spaceport Processing System Development Lab (SPSDL), developed and maintained by the Systems Har...
  5. Launch Control System Message Reduction System Monitoring and Control (SMC) message browsers receive many messages daily that operators do n...

Aviso de cookies: Usamos cookies propias y de terceros para mejorar nuestros servicios, para análisis estadístico y para mostrarle publicidad. Si continua navegando consideramos que acepta su uso en los términos establecidos en la Política de cookies.