Solid Mechanics, Materials and Manufacturing

Solid Mechanics, Materials and Manufacturing develops novel computational and experimental solutions for problems in the mechanical behavior of advanced materials. Research in the division spans length scales and includes investigations of microstructural effects on mechanical behavior, nanomechanics, granular mechanics and continuum mechanics. Material behavior models span length scales from the nano- and microscale to the meso- and macroscale. Much of the research is computational in nature, using advanced methods such as molecular dynamics and finite element, boundary element and discrete element methods. Strong ties exist between this group and the campus communities of applied mathematics, chemical engineering, materials science, metallurgy and physics.

Faculty in Solid Mechanics, Materials and Manufacturing

Mohsen Asle Zaeem

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Research Group: Computational Materials and Mechanics Lab

  • Development of algorithms and models for nano/micro computational materials and mechanics (electronic structure calculations, atomistic simulations, and phase-field modeling)
  • Rapid solidification of materials
  • Data-enabled and computational-intensive frameworks to determine processing-structure-property relations in materials (metallic alloys, functional ceramics, and 2D materials)
  • Solid state phase transformation (diffusional and martensitic)
  • Materials design through ICME

John Berger

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Department Head

  • Electrochemical stresses in lithium-ion batteries and transport membranes
  • Homogenization methods for heterogeneous materials
  • Fracture mechanics
  • Green’s functions and boundary element methods
  • Mechanics of anisotropic materials

Craig Brice

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Research Group: The Alliance for the Development of Additive Processing Technologies (ADAPT)

  • Additive manufacturing (AM) in a range of materials from metals to ceramics to polymers
  • Process feedback control of AM systems
  • Qualification and certification of AM processes and parts
  • Alloy design and property development
  • AM education and workforce development
  • Director: Advanced Manufacturing interdisciplinary graduate program

Cristian Ciobanu

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Research Group: Ciobanu Lab

  • Atomic scale studies of catalysis: structures, defect interactions and surface reactions
  • 2D materials and nanostructures
  • Piezoelectric materials
  • Soft-magnetic materials
  • Structure and electronic properties of alloy nanowires
  • Growth of alloy nanoparticles with controlled electronic properties
  • Development of genetic algorithms for materials design

Veronica Eliasson

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Research Group: Shock and Impact Lab

  • Experimental mechanics
  • Shock and blast wave dynamics
  • Fracture mechanics
  • Medium to high strain rate impacts
  • Ultra-high-speed visualization techniques

Owen Hildreth

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Research Group: Hildreth Lab

  • Nanometer- to centimeter-scale additive manufacturing 
  • Mass transport, reaction kinetics and interface design in reactive inks for photovoltaics, printed electronics and printed MEMS
  • Microstructure evolution, dilution and corrosion of metals fabricated using powder bed fusion and directed energy deposition technologies to simplify post-processing of additively manufactured metals

Leslie Lamberson

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Research Group: XSTRM Lab

  • Mechanics of materials under extreme conditions
  • Impact physics
  • Dynamic fracture
  • Full-field metrology techniques

Brian Thomas

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Research Group: Continuous Casting Center

  • Metals processing and defect formation
  • Computational modeling of the continuous casting of steel

Garritt Tucker

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Research Group: Computational Materials Science and Design

  • Grain boundary structure-property predictions
  • Discovery and design of nanostructured materials
  • Deformation mechanisms in materials
  • Modeling multifunctionality in emerging materials
  • Microstructural damage initiation and structural health

Ruichong “Ray” Zhang

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  • Damage diagnosis and structural integrity evaluation of pipelines and infrastructural systems
  • Concrete containment for fluidized-bed thermal energy storage system with economic analysis
  • Modeling of time-dependent dislocation source and wave propagation in layered media
  • Time-frequency data analysis for structural health monitoring and damage detection
  • System identification and vibration control of long-span, large-scale structures

 

Labs and Capabilities in Solid Mechanics, Materials and Manufacturing

Advanced Manufacturing Teaching Lab

The Advanced Manufacturing Teaching Lab hosts high-end additive manufacturing equipment capable of printing in various materials. Students in the Advanced Manufacturing program get hands-on experience with relevant equipment used in industry.

  • 3D Systems ProJet 6000: Industrial-grade high resolution stereolithography (SLA) printer that offers a wide variety of resins with cured properties that meet or exceed their standard engineering counterparts. The ProJet 6000 can also print transparent parts. It has a build volume of 250 x 250 x 250 mm and feature reproducibility as low as 0.050 mm.
  • ADAPT Modular Powder Bed Fusion Education and Research Environment (AmPERE): Student-built powder bed fusion (PBF) printer designed for studying the effects of process parameters that cannot typically be varied by users of industrial PBF printers. These parameters include scan strategies, laser power, laser spot size, and material spreading. It was designed to print steels, nickel-based super alloys, aluminum alloys, and titanium alloys. The build volume is 100 x 100 x 40 mm, and minimum layer thickness is 0.040 mm.
  • Direct Ink Write (DIW): Student-built DIW 3D printer designed for testing viscous additive manufacturing materials and studying the effects of process parameters on the additive manufacturability of these materials. The printer is equipped with several pressurized dispensing heads that allow it to print a variety of materials, including two-part (2K) mixtures, ranging in viscosity from 1cP to greater than 150,000 cP. Customizable print parameters include dispensing and slicing strategies, machine feeds and speeds, dispensing pressure, filament/nozzle diameter, and material curing methods. The machine also incorporates print monitoring equipment, including thermal and high-speed cameras. The build volume is 500 x 300 x 100 mm, with a minimum layer height of 0.040 mm.
  • EOS M270: Industrial-grade, research-focused powder bed fusion (PBF) printer that is equipped with in situ imaging capabilities for studying the physics of the PBF process and how they are affected by printing process parameters.
  • HP MultiJet Fusion 580: Multi-agent binder jetting system capable of full-color functional parts in nylon (PA 12). It provides voxel-level control of material appearance and properties and can produce parts a up to 10x the speed of other traditional polymer additive manufacturing systems.
  • Lithoz CeraFab 7500: Produces high-performance ceramics that possess equal or better material properties as those achieved using conventional manufacturing processes. By eliminating the need for tools and by keeping the level of material consumption throughout the production process to a minimum, it is possible to economically manufacture prototypes and small batches of high-performance ceramic parts.
  • MARK10 ESM 1500 Electromechanical Load Frame: Small benchtop electromechanical load frame with a variety of fixtures for applying tensile, compressive, and bending loads to standard and atypical geometries. It is positioned on an optical breadboard to allow for image acquisition and analysis, such as digital image correlation (DIC) strain measurements. These are particularly important for complex printed geometries where the failure locations can be unintuitive. It has a force capacity of 6,700 N, resolution as low as 0.02 N, and a stroke of 800 mm.
  • Markforged Mark Two: High-end desktop material extrusion printer with a variety of easily adjustable parameters, making it well suited for everything from educational to industrial applications.
  • Shining 3D EinScan Pro 2X: Handheld 3D scanner that generates full-color digital files, which can be easily imported into commercial CAD software or directly to a printer. The Geomagic software can perform feature recognition and create solid files. The scan is 30 fps with 50,000 points per frame, and accuracy of 0.04 mm.
  • Stratasys Objet Eden260VS: High-resolution material jetting printer compatible with a broad range of proprietary UV-curable resins. The spectrum of cured resin properties include thermally stable, high strength, high stiffness, high ductility, rubber-like, variable color, and easily removable support material.
  • Stratasys F170: Industrial-grade material extrusion printer that can produce service-ready components as well as low-cost rapid prototypes. It is capable of printing PLA, ABS, ASA, TPU 92A (a durable elastomer), and soluble support material.

Contact: Dr. Garrison Hommer (ghommer@mines.edu) or Dr. Craig Brice (craigabrice@mines.edu)

 

Ciobanu Lab

 

 

Computational Materials and Mechanics Lab

The Computational Materials and Mechanics Lab (CMML) is focused on developing and integrating computational modeling tools and performing large-scale parallel simulations to predict and study nano- and microstructures, properties, and failure of advanced materials, including light-weight, 2D, and energy related materials. A special interest is to create advanced integrated computational models that enable the study and design of materials at different length scales to find structure-property-processing relationships. Examples of these advanced computational modeling techniques include

  • Density functional theory calculations and ab initio molecular dynamics simulations
  • Large-scale classical molecular dynamics simulations implementing second nearest neighbor (2NN) modified embedded atom method (MEAM) potentials
  • Quantitative phase-field models

CMML researchers perform large-scale parallel simulations utilizing supercomputers that allow single simulation with multi-thousand CPUs and GPUs (petascale computing). To calibrate and validate modeling efforts, different experimental techniques are employed, such as  optical microscopy, scanning electron microscopy (SEM-orientation image mapping) and transmission electron microscopy (TEM).

Contact: Mohsen Asle Zaeem (zaeem@mines.edu)

Computational Materials Science and Design Lab

In the Computational Materials Science and Design (CMSD) group, researchers integrate high-performance computing and theory to discover the fundamental structure-property relationships of materials that will enable the predictive design of advanced materials with tunable properties. Of particular interest are materials where defects and interfacial-driven properties can be effectively tuned or controlled to enable property enhancement, such as nanostructure alloys and ceramics, multicomponent laminates, shape memory alloys, materials for energy storage, 2D materials, and hierarchical metals.

CMSD uses a number of developed materials modeling tools, including: atomistic modeling methods, density functional theory, phase field modeling, crystal plasticity, and other advanced computational modeling tools in the following areas:

  • Multiscale polycrystalline metal alloys
  • Interfacial (e.g., grain boundary) structure-property predictions in metals and ceramics
  • Discovery and design of nanostructured materials
  • Modeling multi-functionality in emerging materials
  • Microstructure damage initiation and structural health
  • Fundamental deformation mechanisms leading to high strength, stability, and hardness

Contact: Dr. Garritt Tucker (tucker@mines.edu)

Data-Driven Advanced Manufacturing and Materials Lab

The Data-Driven Advanced Manufacturing and Materials (DDAMM) Lab is dedicated to developing high-throughput, data-informed manufacturing and mechanical behavior research and development technologies.

  • ADAPT.citrination: a cloud-based data informatics platform specific to additive manufacturing data that has been collaboratively developed by Citrine Informatics and Colorado School of Mines. Its machine learning Design of Experiments (DOX) tool provides statistical reports and models, data visualization tools (including dimensionality reduction), uncertainty quantification, and error metrics for the models. It uses a combined outlier and uncertainty metric to inform the user of the most important experiments to perform next to gain the biggest statistical improvements within a given data space; that is, it simultaneously considers accuracy, precision, bias, and variance of the data model in prioritizing the next experiments to perform.
  • Digital Image Correlation System: DIC is a non-contact full-field optical strain measurement technique used in conjunction with various mechanical testing techniques. Samples are speckled and a series of images is captured at a fixed frequency using high-resolution cameras synchronized with the load frame. The VIC 3D and ARAMIS software packages are used to analyze the images and compute strain measurements. 
  • Extensometry: Extensometers provide high-resolution, 1D strain measurements during mechanical testing. These measurements are necessary for accurate determination of material stiffness and strain-controlled testing. Special extensometers are used for internal (e.g., environmental chamber) and external (e.g., induction furnace) high-temperature testing.
  • MARK-10 ESM 1500 Electromechanical Load Frame: A small, benchtop load frame that is easily configurable for tensile, compressive and bending testing of samples. It is well suited to characterize 3D-printed compression cylinders imaged with the Zeiss Xradia Versa. By combining the tomographic imaging capabilities of the Zeiss and the mechanical testing abilities of the Mark 10, we can get a unique glimpse into the mechanical properties of a 3D-printed sample as well as the structure responsible for those properties and the process that produced that structure.
  • MARK10 Series TSTM-DC: Small benchtop torsion load frame with a torque capacity of 11,500 Nmm and resolution down to 0.2 Nmm.
  • MTS 370.10 Uniaxial Servohydraulic Load Frame: The MTS 370.10 provides high-fidelity uniaxial mechanical data on additively manufactured standard tensile test specimens for larger, structural materials. When combined with the composition- and orientation-related degrees of freedom available in metals 3D printers, this load frame provides an invaluable comparison of tension, compression and fatigue test data for AM parts with the extensive test data available for traditionally manufactured parts.
  • MTS 370.25 Uniaxial Servohydraulic Load Frame with Environmental Chamber: The MTS 370.25 provides high-fidelity uniaxial mechanical data on additively manufactured standard tensile test specimens for larger, structural materials. When combined with the composition- and orientation-related degrees of freedom available in metals 3D printers, this load frame provides an invaluable comparison of tension, compression and fatigue test data for AM parts with the extensive test data available for traditionally manufactured parts. It is also equipped with an MTS environmental chamber for low and high temperature testing from –129 to 315 °C.
  • Keyence VHX5000 Optical Microscope: Optical microscopy is a cornerstone of metallurgical materials analysis. The advanced image processing capabilities of the Keyence VHX-5000 enable 3D surface reconstruction. When combined with metallurgical analysis, the library of 1D and 2D measurement tools can be used to quantify phases, voids and other structural features. Differential interference contrast and polarized light microscopy expose features in polished and etched metallurgical samples that reveal details about grain growth, microstructural evolution and compositional segregation.
  • Malvern Panalytical Empyrean X-ray Diffractometer: Provides crystallographic and compositional information critical to understanding part mechanical performance. Through small- and wide-angle X-ray scattering (SAXS/WAXS), the ability to test samples at temperatures ranging from −200 °C to 1100 °C, and the capture of information on texture, residual stress and pair distribution functions, the Panalytical Empyrean demonstrates how the crystal structure of 3D-printed metals changes during operation at high and low temperatures. This piece of equipment is located on the ground level of CoorsTek.
  • UltraFlex UltraHeat SM Induction Furnace: The UltraFlex induction furnace is coupled with load frames for in situ thermomechanical monotonic and fatigue testing. High temperature mechanical property measurements are critical for aerospace applications, Ti alloys, and Ni-based superalloys, among others.
  • Zeiss Xradia Versa 3D X-ray Microscope: Offers cutting-edge, nondestructive tomographic imaging and grain reconstruction. X-ray tomography allows for the collection of both surface and internal renderings, which are used to distinguish between phases and identify defects such as porosity. Nondestructive diffraction contrast tomography (DCT) provides direct 3D crystallographic grain reconstructions for crystalline materials. This piece of equipment is located on the ground level of CoorsTek.

Equipment located in the Mechanical Testing Lab and the Electron Microscopy Lab in Hill Hall is also essential to high-throughput, data-informed characterization and analysis.

DDAMM Lab Contact: Dr. Garrison Hommer (ghommer@mines.edu) or Dr. Craig Brice (craigabrice@mines.edu)

Hildreth Lab

The Hildreth Lab encompasses 1,320 square feet of chemical lab space dedicated to nanoscale to centimeter scale additive manufacturing research.

3D PRINTERS

  • Microfab Jetlab II Precision: Drop-on-demand materials printer that can print up to four inks/materials serially
  • Nordson Pro4 3-Axis Dispensing Robot: Used to metallize photovoltaic cells and investigate the impact of reaction kinetics on the morphology and materials properties of printed reactive inks
  • EHD Nano-Drip Printer: Lab-built electrohydrodynamic (EHD) printer for nanoscale additive manufacturing

FURNACES

  • Lindberg Blue M 1200ªC 3″ Tube Furnace: Single-zone (24″ heated length), 5440 W, 3″ tube furnace with digital controller used to sensitize non-ferrous alloys in inert environments
  • Deltec Inert Gas Furnace: Front-loading atmosphere envelope vacuum laboratory furnace

METROLOGY

  • Ametek Parstat Multichannel Potentiostat Chassis with EIS: Equipped with eight PMC 1000 potentiostats (±12V, ±2 A, 2 MHz EIS) and one PMC 10A booster
  • Ametek 616A Rotating Disk Electrode: High-precision, low mass rotator that performs well with virtually any potentiostat
  • Pine Jacketed Corrosion Cell: Jacketed corrosion cell with drain used to measure the electrochemical and corrosion response of sensitized metals and printed reactive inks
  • Pine Instruments WaveNow Portable Potentiostat/Galvanostat: Potentiostat with ±4 V, ±100 mA range.
  • TA Instruments Q20 Differential Scanning Calorimeter (DSC): Used to measure enthalpy of reactions, heat of vaporizations, and reaction kinetics of new reactive ink systems
  • TA Instruments Q50 Thermogravimetric Analyzer (TGA) with Gas Evolution Furnace: Used to measure solvent partial pressures, reaction temperatures, reaction product vaporization temperatures/rates
  • Thermo-Fisher Nicolete IS-50 Fourier Transform Infrared (FTIR) Spectrometer: This FTIR with TGA-IR and ATR modules is used to monitor/measure reaction products, reaction rates, and partial pressures
  • Mettler-Toledo S470 pH/Conductivity Meter: pH/conductivity meter for fluids
  • Elveflow OBII MKII Microfluidics Controller: Two-channel microfluidics control with flow meter for both positive and negative flows
  • Rheosense microVisc Rheometer: Portable rheometer for viscosity measurements of reactive inks
  • Motic BA310MET-T Trinocular Optical Microscope: Trinocular optical microscope for transmission and reflection optical imaging

ELECTRONICS

  • Signatone S-302-4 Four-Point Probe Station
  • Keysight 34420A Nanovolt/Micro-Ohm Meter
  • Trek 10/10B-HS-L-CE High Voltage Amplifier
  • Keysight 33510A Waveform Generator
  • Keysight DSOX3023A Oscilloscope
  • Keysight N2790A High Voltage Floating Probe
  • Keysight N5752A 600 V Power Supply
  • Keysight U3606B 30 Watt Power Supply
  • Keysight 34411A Multimeter

FABRICATION, SYNTHESIS & LAB SUPPLIES

  • Glowforge Laser Cutter
  • World Precision Instruments PUL-1000 Micropipette Puller
  • World Precision Instruments MBS Microbeveler System
  • Plasma Etch Venus 25 Plasma Cleaner
  • IKA RV10 Rotary Evaporatory
  • Purelab Flex 3 18.2 MΩ-cm Deionized Water Polisher

SOFTWARE

  • Comsol Multiphysics
  • Apple’s Xcode Integrated Developer Environment
  • SwiftVISA
Extreme Structures and Materials (X-STRM) Lab

The Extreme Structures and Materials (X-STRM) Lab houses state-of-the-art equipment used to investigate material and/or structural behavior across 10 orders of magnitude in strain rate, with temperature and electrical coupling capabilities, a wide range of full-field optical diagnostics, 2W Coherent laser and white light illumination, and ultra-high-speed imaging (5 Mfps).

  • Two-stage light-gas accelerator (rebuild in progress, ETA summer 2021)
  • Single-stage gas accelerator (rebuild in progress, ETA December 2020)
  • Patented impact fatigue device
  • Unique long-bar striker system for dynamic fracture investigations
  • Compression Kolsky (split-Hopkinson) bar systems for both low and high impedance material investigations
  • Tensile Kolsky bar (coming in 2021)
  • 50-foot shock tube (in collaboration with Dr. Veronica Eliasson, coming in 2021)
  • Standard material load frame with thermal chamber
  • Ultra-high-speed imaging systems (5 million fps) with LED, strobe and laser illumination setups
  • Optical microscope
  • Wide range of optomechanics and lens systems, electromechanical coupling ability with high voltage power supplies, etc.
  • Complete material preparation setup, including a diamond saw, an Allied High Tech Multiprep material polishing system, a precision micro-balance, charge amplifiers, oscilloscopes, and hot plates
  • High-performance computer workstations with Abaqus, MatchID Digital Image Correlation software, AutoCAD, and MATLAB

Contact: Dr. Leslie Lamberson (les@mines.edu)

Modeling and Advanced Visualization Studio (MAVS)
The Modeling and Advanced Visualization Studio (MAVS) is designed to provide mixed-reality visualization experiences to users enabling enhanced education and knowledge transfer through immersive demonstrations. MAVS was started by Dr. Garritt J. Tucker primarily to aid in the improvement of both learning and collaborative environments for students from different STEM backgrounds. Accordingly, collaborations with Dr. Sebnem Düzgün (Mining Engineering Department), and Dr. Tod Clapp (Human Anatomy, Colorado State University) enables broader partnerships and effectiveness of immersive technologies.
 
MAVS currently houses multiple linked virtual reality machines, using software designed by colleagues from Colorado State University to showcase cutting edge research at Mines. Some of the demonstrations that MAVS currently exhibits include:
 
  • Atomic-scale chemical segregation maps from atom probe tomography (APT)
  • Metallic microstructures from FIB-sectioned scanning electron microscopy (SEM)
  • Deformation mechanistic maps from molecular dynamics (MD) simulations
  • Dislocation and grain boundary structure and properties from computational modeling

Contact: Dr. Garritt Tucker (tucker@mines.edu)

Shock and Impact Lab
Shock and Impact Lab: Our research interests are multi-disciplinary and range from shock wave dynamics to fracture mechanics — all explored relying on a strong foundation of experimental mechanics coupled with different types of ultra high-speed photography techniques.
  • Exploding wire setup that can explode a single wire or multiple wires simultaneously, in 2D or 3D test sections
  • Square cross-section area horizontal shock tube
  • Shock tube that can be tilted from the vertical to the horizontal direction in 1-degree intervals
  • Single-stage gas gun, 7-ft long, 2-in. diameter barrel
  • Z-folded optical system (10-in. diameter) that can be used as a schlieren system, photo elasticity system, caustics in transmission, or combinations thereof
  • Ultra-high-speed camera: Shimadzu HPV-X2 capable of up to 10,000,000 frames per second at a resolution of 250 pixels by 400 pixels
  • Digital image correlation setup
  • HAMr device to study repeated impact onto different types of materials including biological samples
  • Mechanical snapping shrimp setup
  • Wide range of sensors, strain gages, amplifiers, signal conditioners, optomechanics, and oscilloscopes

Contact: Dr. Veronica Eliasson (eliasson@mines.edu)

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