Welcome to the Advanced Manufacturing, Materials & Mechanics Lab, located in Brown Hall. We have a variety of characterization abilities in house, including mechanical testing (tension–compression, torsion) and stereo digital image correlation with a number of focusing optics. We also maintain a modest 32-core server for computations as well as data storage and analysis. In addition to our lab, we use shared facilities at Mines, including the central Electron Microscopy laboratory, Prof. Packard's nanoindentor, and the Atom Probe Tomography laboratory.
A primary focus of our lab is to pioneer a novel planar biaxial experiment for understanding the micromechanics of asymmetry and anisotropy in materials. Below is a picture of our one-of-a-kind load frame. This rigid machine has four 25 kN capacity actuators oriented orthogonal and in-plane to each other. Each actuator may be independently controlled, or the actuators may be controlled in pairs. These abilities allow us to apply (almost) any imaginable plane stress load path to our samples.
While a one-of-a-kind load frame is cool, this is certainly not the first planar biaxial load frame to be built. It is, however, the first one capable of mounting to a 6-axis translation + rotation stage in a high-energy X-ray beam line, and of being rotated through +/-180 degrees for purposes of high-energy diffraction microscopy. The design and build of this experiment took two years of development efforts by MTS engineers, our lab, and the scientists and engineers that support the 1-ID beam line at the Advanced Photon Source (APS) of Argonne National Laboratory. We ran our first in situ diffraction experiments at APS with this load frame in 2015. The animation below, made by our postdoc Harshad Paranjape, shows the general configuration of the in situ experiment: X-ray tube, stereo digitial image correlation cameras, load frame, and detector.
Below is an animation of macroscopic data collected from deforming an aluminum sample through a complex loading path using the biaxial load frame.
Use your mouse with the interactive content below to explore the biaxial high-energy diffraction microscopy setup in 3D.