Quantitative nondestructive evaluation (NDE) of materials using ultrasonic and understanding the damage precursor in composites being the primary activities, iMAPS has four diverging research directions:

The Integrated Material Assessment and Predictive Simulation Laboratory

iMAPS Laboratory is strongly founded on ground breaking discoveries and its unique expertise in the field of Acoustics and Ultrasonics,

while exploiting the physics of smart materials. Despite conducting the fundamental scientific research, iMAPS is equally devoted to

contributing real world applications. Its central focus is nondestructive health assessment of the aerospace, mechanical and biological systems.

Modeling virtual NDE experiments and health monitoring of structures (SHM) at multiple length scales using physics based predictive simulation methods for aerospace applications.

Learning the ‘acoustobiomechanics’ of nature and implementing the physics to the design of novel sensors, smart structures, metamaterials and energy harvesters for aerospace applications (patent pending).

Designing application driven ultrasonic, acoustics and photoacoustic methods, namely Q-ACT (patent pending), QUIC etc. to investigate the mechanical landscape and dynamic architecture of the biological species, microbiome, cancer clusters, human tissues, fungi infected crops, infected food, etc. so that alternative remedial action could be taken.

Integrating the structural components with the biological species through predictive bio-origami while exploiting the high entropy fractal architecture and the complex dynamics, to exploit the novel mechano-chemical actuation and sensing possibilities for aerospace, civil and defense applications.

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Manufacturer Model Specs

Scanning Acoustic Microscope

SAM 300PVATepla, Germany

Ultrasoun frequency range up to 500 MHz with transducers from 10 MHz-400 MHz

Real time Hilbert-Filtering

Scan speed: 1 Million A-Scans in 5 minutes

Integrated scanning modes A, B, C, X Z, P and D scans

Scanning range: x=250mm-320mm m 320 mm, y=250mm-320mm m-320 mm, z=100mm

Equipment, Test Bed and Hardware Accessories

SHM System NI-PXINational Instruments

NI PXI-5412, 100 MS/s Arbitrary Waveform Generator

14-bit, 8 MB, NI PXI-5105, 8-ch, 60 MS/s digitizer w/16 MB onboard memory

NI PXI-2570 40 Channel Form C Relay Module

Windows 7 32-Bit for NI PXI Embedded Controllers

NI pXI-8102 Celeron T3100 1.9 GHz Controller

Local OS housed in PXI-1036, 6-Slot 3U Chassis

LabWindows/CVI Full Dev.

Multi-range Oscilloscopes for NDE/SHM sensor design and energy harvesting

TDS 2004C

Tektronix 4 Channel, BandWidth: 70MHz, SR: 1.0 GS/sec, RL: 2.5 k points, VR: 8 bits, RT: 24hrs

DS1104ZRIGOL 4 Channel, BandWidth: 100 MHz, SR: 1.0 GS/sec, RL: 12 M points, VR: 8 bits, RT: 25hrs.

DS2102A-SRIGOL 2 Channel BandWidth: 100 MHz, SR: 2.0 GS/sec, Rl: 24 M points, VR: 8 bits, RT: 25hrs.

Multi-range Function Generator for NDE/SHM actuator design and energy harvesting

AFG 3021CTektronix 1 Ch. Output Freq. 25 MHz, RL: 128K points, SR: 2-128K: 250MS/s, VR: 14 bits

Manufacturer Model Specs

Integrated 3D Vibration and Acoustic Test bed with robotic arms

In-house Coupled or individual X-Y-Z axis vibration, Up to 5KHz configurable 3D Acoustic frequency testbed between frequency 20Hz-20KHz

Impact Test bed for Passive SHM

In-house Capable of testing aerospace structures (up to 4ftx4ft) subjected to low velocity impact using various type of small (~max. 1” dia.) metallic and nonmetallic impactors

Servocontroller DC Motors

ESCON 50/5, 4-Q

Escon Motor Control DC&EC Motors up to 250W. Max speed DC & EC: 150,000 rpm. Output Voltage Factor 0.98; PWM clock freq. 53.6kHz, Operating range -30oC-40oC.

8Q Acquisition Board

Q8DABQuanser Ch: 8, 14-bit, speed 33MHz, PCI Bus width 32-bit, encoder input: 8, encoder counter size 24-bit, Max. A&B freq. 2MHz, 4x quad. 8MHz, non-quad 15MHz.

Programmable DC Power Supply

DP832 3RIGOL 1 Ch. 0 to 20V/ 0 to 10 A (Low Range) or 0 to 40 V/0 to 5 A (High Range), OVP/OCP 0.1V-22V

DG1022ARIGOL 2 output Ch. Output Freq. 25 MHz, RL: CH1-2pts-4Kpts, CH2 -2pts-1Kpts, SR: 100 MS/s, VR: CH1-14 bits, CH2-10bits

MDO 3024

Tektronix 4 Channel, BandWidth: 200MHz, SR: 25 GS/sec, RL: 10 M points, VR: 14 bits, RT: 24hrs

Manufacturer Model Specs

MATLAB R14MATLAB All purpose programming language

Commercial and In-House Software

Multi-Physics Simulation Software

COMSOL 4.4COMSOL-Multiphysics

Integrated modules

SAMVIZimaps V1.0In-house Capable of analyzing the ultrasonic Z-scan signal data from the SAM and calculate the material properties of the materials at multiple length scales via calculating the wave velocities at different directions. The software is capable of realizing the distributed damage growth pattern in complex material systems. Additionally the SAMVIZ is designed to visualize the material in 3D however this feature is under construction.

ZIGANALimaps V1.0In-house An in-house robust and modular signal processing software to analyze and understand the ultrasonic signal for NDE/SHM applications. The software includes eight (8) different feature extraction methods and six (6) different data modeling techniques that could be chosen at user’s discretion, both for research and industry applications.

WAVE-FILM V1.0In-house A software module that is capable of modeling the ultrasonic wave metallic and composite materials. WAVE-FILM is designed to simulate virtual NDE/SHM experiments to better understand the wave-material and wave-damage interactions (under development).

With the in-house integrated software for the ultrasonic data analysis, iMAPS is the only

laboratory in the country that offers unique multifaceted capabilities of Scanning Acoustic

Microscope (SAM), for example Q-ACT and QUIC.

Integrated Material Assessment and Predictive Simulation Laboratory

Sourav Banerjee, PhD, PE 803.777.4596 banerjes@cec.sc.eduhttp://www.me.sc.edu/Research/iMAPS/