ฝัง
- เผยแพร่เมื่อ 19 ม.ค. 2024
- Through a series of compression tests, we demonstrate how varying the infill percentage in TPU can significantly alter its physical properties. We test TPU cubes, each 30mm to a side, under compression to illustrate how these variations impact their behavior in practical applications such as shoe insoles, motorcycle armor, and electrical enclosures.
Join us as we explore various infill densities, observing the material's transition from soft and squishy to rigid and durable. Discover the surprising resilience and versatility of TPU, a material that is not only UV and chemically resistant but also capable of rebounding after complete compression.
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4:55
This kind of study would be really intriguing if done with the foaming tpu. I believe it is made by either colorfab or esun. Its simular to their light weight foaming pla. Anyways it adds a whole additional dimention as the temperature changes the parts stiff ness as it is effectively changing the infill of the line being extuded. Therefor you can change the infill of the part and the material being extruded.
I use a lot of TPU for fixtures at work for a many of the same reasons mentioned. I have some fixtures that need a ridged base but a softer upper portion. I can print the lower portion with a very high infill and add an infill modifier block to change the upper portion to a lower infill density.
This stuffs impact resistance is off the charts. You almost cant hurt it.
I'd be interested in seeing the parts turned 90 degrees so you're crushing them in the print orientation. This would more accurately reflect one of your examples: shoe soles.
PLA and TPU are my favorite. They both print easily and cleanly.
The 100% example looks like it has under extrusion.
Love the prospects of TPU, and TPR
Tpu is also great for the abrasion resistance. For mechanical parts like gears solid Tpu works great
Yo, thx for doing this research for me! I’ve been anted to test the viability of printing a custom helmet for myself and this has helped me a lot!
I love TPU, it is probably my favorite material to print with. I would be thrilled if you did an abrasion comparison between PLA, PETG, TPU, ASA and maybe some CFs. There are many strength tests out there but what about things that have long term friction on the part?
The texture and wall thickness also affects this. Super great video. 🙏🙂❤️
Now pass the 100% infill TPU to the Hydraulic Press Channel and let them do their thing.
Great video and i totally agree, Tpu is so underrated. How does tpu and pla work together? Tpu shell pla infill? Pet and tpu? Abs and pla. Your rig can test so many combinations.
Immediately distracted by the fact that you look like Mac from it's always sunny haha. Great info, thank you!
a stiffer variant of tpu would be great. better load bearing at lower infill and better printing with less issues (more forgiving about the extruder design). the layer bonding is incredible. a mixing nozzle on the printer would allow combining tpu and pla into whichever shore value you like with smooth transitions between them.
Never really thought of the possibility of infill density affecting the characteristics of flexible parts this much, but I guess it makes sense
3d printing compliant mechanisms (gripper claw, Nerf gun, etc) in different materials and seeing how that affects the performance (grip strength, distance the dart is launched) would be cool to see.
So a springy material behaves like a spring? I guess I'd like to see how the spring constant deviates from theory as a percent of infill changes. Any mechanical engineers out there?
Well you changed the properties of the part (not the material). It would be very interesting to compare different infill types and wall thicknesses.