NON-DESTRUCTIVE TESTING & STRUCTURAL HEALTH MONITORING

INSTITUTO POLITCNICO NACIONALESCUELA SUPERIOR DE INGENIERA MECNICA Y ELCTRICAUNIDAD CULHUACNNON-DESTRUCTIVE TESTING & STRUCTURAL HEALTH MONITORINGDISEO MECNICO IPRESENTAN:8MM2

Mxico, D.F. Marzo 2015

Description:

Modern Non-destructive Testing & Evaluation (NDT & E) methods including Acoustic Emission (AE), Acousto-Ultrasonics (AU), Ultrasonics (UT), Digital Image Correlation (DIC) and Infrared Thermography (IRT) are used by TAMG to investigate: The state of existing damagein a wide range of modern materials including composites, alloys and smart materials, as well as structural components found in aerospace, marine, oil & gas and transportation industries. The tracking of deformation and damage developmentacross time and length scales by combining traditional NDT&E methods with modern observational tools ranging from TEM/SEM to optical microscopes.Nondestructive testing is further used as an integral part of a more general Structural Health Monitoring (SHM) system. As such, several NDT&E methods are currently used to collect information about parameters that are related to structural performance including displacements, strains and stresses. This information is combined with advanced post-processing tools to infer on the current operational state and remaining life.

Figure:Examples of NDT setups used for materials testing and SHM.(a)Placement of PZT sensors for AE, AU and UT during Mode I testing of a compact tension specimen (top) and actual setup (bottom).(b)Typical results from materials (top) and structural component (bottom) testing.

Figure:Overview of funded research program with U.S. Army PEO Soldier, Non Destructive Approach For Damage Detection In Hard Armor Protective Inserts. Project results include: Damage morphology characterization; Tap-test physics investigation; Novel technology/methodology assessment; Damage Metrics identification; Prototype concepts proposed.

Figure:Acoustic emission testing on full-scale aerospace structural component. Consulting project results include: Progressive Failure Evaluation; Damage Precursor Metrics; Critical Regions of Failure Initiation; Proposed calculation methodologies for evaluating component performance using AE data.

Figure:Feasibility test for an aerial inspection with multispectral imagery using a helicopter. The traffic was not stopped during the test and distance of 100ft was maintained by the pilot.

Theoretical and Applied Mechanics GroupDrexel University, Philadelphia, PA 19104http://tamg.mem.drexel.edu/