Creep test with 3D printed plastic materials: PLA, PETG, ASA, Nylon

Material creep is the tendency of a solid material to deform permanently under the influence of constant mechanical load. In this creep test I am comparing 4 different 3D printing filaments (PLA, PETG, ASA, Nylon) to better understand their behavior under constant load over a longer period of time. I prepared 3 different creep tests, but I am opened for suggestions, how to improve them. One of my next videos will be a comparison of 4 different ABS filaments, to find out which is the best for 3D printed Voron parts.

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Used materials and methods:
Creality enclosure https://www.banggood.com/custlink/3KK...
Torque wrench (set to 2.5 Nm) https://www.banggood.com/custlink/mD3...
Filaments: PLA, PETG, ASA (Prusa) and Nylon (Gembird)
Creality dryer: https://www.banggood.com/custlink/KvG...
Eibos https://shop.eibos3d.com/

STL files, drawings, 2D scale can be downloaded from:
https://www.mytechfun.com/video/143

Mentioned in the video:
Screw test idea I got from video by Stefan from ‪@CNCKitchen‬ .
Tensile testing machine:    • TM221 CREEP TESTING MACHINE  
Creep test machines: http://www.kormtm.com/mtm/creep_testi...
About Creep on Wikipedia: https://en.wikipedia.org/wiki/Creep_(...)

Contents:
0:00 Introduction
0:21 What is material creep?
1:23 About tested materials
2:26 About tensile creep test
3:08 About 3 point bending test
3:35 About Test 1 (C-test specimen)
4:40 About Test 2 (2 point bending)
5:38 About Test 3 (screw test)
7:44 Starting with Test 1
9:31 Starting with Test 2
10:53 Starting with Test 3
13:06 After 10 hours
14:26 After 24h
14:55 Day 2
18:24 Day 4
20:21 Heating (Day 4)
25:07 Day 6
27:18 Removing the load
28:07 Analyzing the results
30:02 Conclusions about materials
31:24 About my creep tests

#creeptest #materialcreep #3dprinting #3dprintingfilaments