High Strain Rate Mechanics Lab
|Faculty Researchers||Lab Location||Phone||Website|
|John Lambros||9A, 206J Talbot Lab|
The High Strain Rate Mechanics Lab is equipped to study the dynamic (impact) response of advanced materials. A drop weight tower, a high speed gas gun, and two tension and two compression Split Hopkinson (Kolsky) Bars are available for low, intermediate, and high rate materials testing. Ultra-high strain rate loading is achieved using a 1J Nd:YAG laser. Real time optical and thermal diagnostics are used in conjunction with these loading devices. Optical imaging is performed using a range of high speed cameras (capable of frame rates from 2,000 to 2,000,000 frames per second) and a high powered pulsed laser light sources. Temperature measurement is made using a high speed infrared sensing. Static tests are also conducted using a computer controlled load frame mounted on an optical table. Metrology includes 2D and3D Digital Image Correlation (DIC) as well as Digital Volume Correlation (DVC) combined with X-ray tomography. Research in this lab has been funded over the years by federal (including NSF, ARO, AFOSR, DOE, NNSA, AFRL, ARL) and private funding agencies (including Exxon-Mobil, Hercules Inc., ABS). The lab is directed by Professor J. Lambros. More details can be found at: http://lambros.ae.illinois.edu/
Facility and Equipment Description
Cooke hsfc pro ultra-high-speed intensified digital camera: 200,000,000 frames per second, 5 ns nanosecond interframe time, 5 ns exposure time, 8 frames
Redlake Motion Pro HS-4 CMOS High Speed Digital Camera: The HS-4 is capable of 5,000 frames per second at a resolution of 512 x 512 pixels
Cordin Model 550/535-16 High-Speed Digital Rotating Mirror Camera: 1K x 1K resolution, 16 full frames, Rotating mirror gas driven turbine with framing rates from 2,000 to 1million fps. Full frames. 10 bit dynamic range
MTS Alliance RT/30 table top load frame: Screw driven load frame, 6,600 lbs capacity
INSTRON Dynatup Minitower Drop Weight Impact Testing System: 1.1 kg up to 4.2 kg, and the initial drop height can be adjusted up to a maximum of 445 mm.
Several tension and compression Split-Hopkinson (Kolsky) Bars. Loading rates 100/s to 10,000 /s
Spectra Physics Neodymium-doped Yttrium Aluminum Garnet (Nd:YAG) laser. The Nd:YAG laser used produces an infrared (IR) pulse 8-12 ns in duration at a wavelength of 1064 nm.