Kielhorn Welding Engineering Lab


Materials Joining Engineering Lab Space

Most of the Materials Joining Engineering facilities are housed in the 8600-square-foot Kielhorn Welding Engineering Laboratory, the largest stand-alone Materials Joining Lab in the nation. The lab contains over a million dollars worth of equipment, virtually all of which is available to students for class projects and research experiments.

The lab contains equipment to facilitate any number of different welding and joining processes, including multiple types of arc welding, spot welding, friction stir welding, brazing, soldering, adhesive bonding, hybrid joining and more.

The lab also contains equipment that enables automation and control, weldability testing, characterization, mechanical testing, nondestructive evaluation and design and analytical computing.


See partial equipment list

    • • Shielded Metal Arc Welding (SMAW)
    • • Gas Tungsten Arc Welding (GTAW), AC/DC and pulsed-arc
    • • Gas Metal Arc Welding (GMAW), both continuous-wave and pulsed-wave
    • • Flux-Cored Arc Welding (FCAW), including metal-cored
    • • Submerged Arc Welding (SAW), solid and tubular wire electrodes
    • • Plasma Arc Welding (PAW)
    • • Oxyfuel Gas Welding (OFW)
    • • Resistance Spot Welding (RSW)
    • • Drawn-Arc Stud Welding
    • • Friction Stir Welding
    • • Torch Brazing
    • • Vacuum Brazing
    • • Induction Brazing
    • • Soldering
    • • Adhesive Bonding of metals, polymers and ceramics
    • • Hot Plate and Hot Air Welding of thermoplastics
    • • Hybrid joining: WeldBonding, Riveting, GMAW Brazing, Atomic Hydrogen Welding
    • • Oxyfuel and Plasma Arc Cutting
    • • Jetline Engineering dedicated automation (rectilinear and circumferential)
    • • Automatic GTAW welding with arc voltage control and magnetic arc oscillation
    • • Fanuc robotic cell (flexible automation)
    • • High-speed data acquisition system for arc waveform analysis in Pulsed GMAW and Stud welding
    • • 1 kW Nd:YAG laser
    • • Varestraint testing
    • • Gleeble 1500 thermomechanical simulator
    • • Gapped Bead-on-Plate (G-BOP)
    • • Tekken (Y-groove) testing
    • • Combinations of the above to predict solidification (hot) reheat, ductility dip (warm) and hydrogen induced (cold) cracking in ferrous and nonferrous alloys.
    • • Weldability prediction software “HAZ Calculator”
    • • Metallographic preparation and examination
    • • High-resolution digital imaging
    • • Scanning Electron Microscopy (SEM)
    • • Energy Dispersive X-ray Spectroscopy (EDS)
    • • Stereo microscopy
    • • Tensile/shear
    • • Rockwell hardness
    • • Vickers and Knoop microhardness
    • • Charpy impact
    • • Liquid Dye Penetrant
    • • Ultrasonic Testing
    • • Magnetic Particle Testing
    • • Wet Fluorescent Magnetic Particle Testing
    • • PC-based universal Eddy Current Testing
    • • ALGOR
    • • SolidWorks/Cosmos
    • • Autocad
    • • Mathcad
    • • MATLAB
    • • Maple V


Why is it called the Kielhorn Welding Engineering Laboratory?

For 45 years, William "Bill" Kielhorn diligently educated welding engineers and welding engineering technologists at LeTourneau University. Despite being hospitalized for stage IV colon cancer during his last semester, Kielhorn never missed a class in his entire 45-year career. His last lecture was given via Skype from his hospital bed.

Just days later, LeTourneau University commemorated his life and career by naming the university’s welding lab the Kielhorn Welding Engineering Lab in his honor. Kielhorn was released from the hospital for a few hours, allowing him to attend the dedication ceremony. Eight months later, Mr. Kielhorn’s battle with cancer took him to be with the Lord.


Explore Programs

The Kielhorn Welding Engineering Lab services students enrolled in two of LETU's engineering programs:

Engineering, B.S. -
Materials Joining Concentration

Engineering Technology, B.S. -
Materials Joining Concentration


Lab Location

To locate the Kielhorn Welding Engineering Lab on the campus map, click here.

The lab is marked #16 on the map