Nitinol Demo Blog Posts
All blog posts below are demonstrations on the use of nitinol wire. Click on the image to see the whole post.
Ultra High Temp Nitinol Actuator in Boiling Water
Ultra High Temp Nitinol Actuator in Boiling Water
We have worked with NASA in the development and testing of Ultra High Temperature (UHT) Shape Memory Alloys. This actuator features Nickel-Titanium-Palladium (NiTiPd) and Nickel-Titanium-Platinum (NiTiPt). These alloys have a very steep transition temperature in the 150 Celsius to 250 Celsius range, but have maximum strain of roughly 2% (roughly half that of the binary alloys).
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Nitinol Properties
Nitinol Properties
Transformation Temperature -200 to 110 deg. C
Latent Heat of Transformation 5.78 cal/g
Transformation Strain
for a single cycle 8%
for 100,000 cycles 4%
Hysteresis 30 to 50 deg. C (more…)
20 mil Flexinol HT Air cooling vs Mineral Oil cooling
20 mil Flexinol HT Air cooling vs Mineral Oil cooling
20 mil Flexinol HT Air cooling vs Mineral Oil cooling
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Center Post Rail Gun Actuator
Center Post Rail Gun Actuator
Twelve layer printed coils are used to launch a small Neodymium Iron Borate magnet. We use short 10 ms pulses in the coil at 30 Volts.
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Nano Muscle Nitinol Walking Bug
Nano Muscle Nitinol Walking Bug
This actuator used two linear NanoMuscle motors to provide the realistic bug-like walking motion. It was a self-contained critter powered by it’s own internal battery pack. It used 6″ of 0.0035″ diameter of a custom alloy Nitinol.
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Shape Memory Alloy Motion Demo
Shape Memory Alloy Motion Demo
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Nitinol Actuators in series explanation
Nitinol Actuators in series explanation
The longer the length of wire, the higher the resistance, thus drawing less current for a given operating voltage. In this demo we are operating three life vest trigger mechanism in series using a single MOSFET current switch. Our Nitinol Actuation Model predicted that end user’s battery couldn’t provide enough current to operate these three devices in parallel.
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High Speed Nitinol Actuation with fan forced air
High Speed Nitinol Actuation with fan forced air
This is 91 mm long S100 actuator which has 2.5 mm of stroke. It has 73 mm of 0.005 HT Flexinol wire. We operate it in a strong airflow at 9 Volts as part of our study on enhanced cooling to verify fit to our Nitinol Actuation Model.
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High speed Flexinol LT cooling with Mineral Oil and Dry Ice
High speed Flexinol LT cooling with Mineral Oil and Dry Ice
This video shows part of a study to determine enhanced cooling for rapid cycling of Nickel-Titanium. We show 20″ of 15 mil Flexinol LT cooling in 2.5 seconds to full recovery in Mineral Oil and Dry Ice using a 15 pound spring. Actual data compared to data predicted by our Nitinol Actuating Model matched closely.
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