Capabilities

Mechanical Characterization

Nanoindentation

Provides high-resolution (~1 µm) measurements of hardness and elastic modulus. 

RR Moore 

Fully reversed cyclic bending fatigue testing.

Indentation Fracture Resistance

Allows for the quantitative estimation of a material’s damage tolerance.

Contact Fatigue

Simulates repeated low-impact force, used for characterizing dental tissues, polymers, and ceramics.

Tension & Compression Testing

Conventional load frame testing for monotonic stress and strain measurements.

Single-filament Tension

Using custom-built load frame grips, we test the tensile strength of individual composite filaments used in 3D printing. 

Nano-Dynamic Mechanical Analysis (nano-DMA)

High-resolution measurement of the viscoelastic response for softer materials, e.g. dentin, polymers. 

Puncture testing

Testing protective capabilites of layered composites.

Structure and Composition

Scanning electron micrograph of an edge defect in an additively-manufactured titanium tensile coupon. Such micrographs provide insight into the defects present and what modes of failure may be instigated by them. Courtesy of J. Hatch.

Scanning Electron Microscopy (SEM)

Used for high resolution imaging of prepared and fractured surfaces.

Energy Dispersive Spectroscopy (EDS)

Provides compositional information at the sub-micron scale, via SEM. 

Fractography

Determining types and origins of failure. Metallographic preparation of surface for both SEM and Optical fractography.

Micro-Computed Tomography (µCT)

On-site systems are used for measuring porosity in titanium parts, while synchrotron sources reveal enamel structure in 3D.

Fourier-Transformed Infrared Spectroscopy (FTIR) & Raman Spectroscopy

Using an incident laser and measuring the light that passes through or is scattered by a sample, certain characteristics and bonds of a material can be quantified. 

Differential Scanning Calorimetry (DSC)

Provides chemical and structural (i.e. crystallinity) of polymers and polymer composites.

Additive Manufacturing

Titanium

Industrial powder bed fusion (both electron beam & laser systems). 

Composite 3D Printing

Modified desktop system for printing continuous fiber reinforced filaments.

Advanced Composite Filament Production

Achieving carbon fiber loading of >50 vol.%