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Reactive Resin 3D Printing Composites with Z-Direction Reinforcement
Additive manufacturing (AM) has made significant advancements since Charles Hull introduced stereolithography in 1987. Today, it encompasses a wide range of materials, including polymers, ceramics, and metals. However, one persistent challenge has been achieving Z-directional reinforcement in 3D-printed composites. This difficulty arises from issues...
Published: 11/25/2025
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Inventor(s): Luke Gibbon, Chad Ulven, Dallas Patton
Keywords(s):
Category(s): Technologies > Mechanical/Robotics
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Total Ankle Replacement
NDSU engineers have developed an improved design and material for Total Ankle Replacements (TARs) that features an inverted design, in which the concave portion of the joint is on the bottom, and the convex on the top. This inverted design and the mode of assembly and implantation offers several benefits to surgeons and patients.
Benefits
Maintains...
Published: 11/24/2025
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Inventor(s): Chad Ulven, Fardad Azarmi, Jared Aelony
Keywords(s): Mechanical/Robotics
Category(s): Technologies > Biology & Medicine, Technologies > Mechanical/Robotics
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Utilization of lignocellulosic fibers from different agricultural waste sources as reinforcement in commodity thermoplastics
This invention describes a process wherein lignocellulosic fibers recovered from various agricultural waste streams (such as crop waste otherwise discarded by ethanol plants) are combined with commodity thermoplastics as a means of reinforcing and strengthening the plastics. This method works with commodity thermoplastics and recycled plastics where...
Published: 11/12/2025
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Inventor(s): Chad Ulven, Michael Fuqua
Keywords(s): Chemistry & Materials
Category(s): Technologies > Chemistry & Materials
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Variable Prepreg and Semi-Transparent Applicator for Additive Manufacturing Composites with Artificial Intelligence
This patent introduces an advanced additive manufacturing system integrating continuous carbon fiber reinforcement with artificial intelligence. The system uses prepreg fibers impregnated with resin, partially cured before entering the printer. The fibers are coated with resin during printing, ensuring a high fiber volume fraction. AI monitors and adjusts...
Published: 11/25/2025
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Inventor(s): Chad Ulven, MD Atikur Rahman
Keywords(s):
Category(s): Technologies > Mechanical/Robotics, Technologies > Software & Algorithms
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Additive Manufacturing Composites with Flow Induced Fiber Alignment
3D printing or additive manufacturing is digital modeling and printing one layer at a time to get a finished product. Stereolithography is a commonly used technique for 3D printing. There are several drawbacks with currently available stereolithography (SLA) resins, prominently with respect to poor mechanical properties. Researchers at NDSU have developed...
Published: 11/24/2025
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Inventor(s): Chad Ulven, Patrick Simpson, Michael Holthaus
Keywords(s):
Category(s): Technologies, Technologies > Mechanical/Robotics
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Miniaturized Biodegradable Soil Sensor
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This patented technology introduces a biodegradable, passive soil sensor designed to improve soil condition monitoring while minimizing environmental impact. The sensor consists of a biodegradable substrate embedded with electrically conductive, bioinert metallic traces (e.g., aluminum or magnesium),...
Published: 11/25/2025
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Inventor(s): Cherish Bauer-Reich, Chad Ulven, Justin Hoey, Robert Sailer, Nathan Schneck
Keywords(s): Biobased Technology, CNSE Invention, Electronics & Sensors
Category(s): Technologies > Agriculture Technologies
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