- #1
Thurman
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I have designed a test apparatus where I can apply known bending and torsion loads to thin sheets of foamed plastic.
All test samples will be identical sized sheets with various treatments to improve stiffness..with the added weight of the treatment recorded. I will use the information to design and test stiffer parts to be used as wings in a rubber powered model airplane where weight and strength are important.
The bending and torsion loads will be in grams and deflections will be in inches. So, how do I express the results? Example: A 3 gram load at 25% chord will deflect .5 inches at the tip of the cantelevered sample which weighs 6 grams. A treated sample deflects .3 inches but weighs 6.2 grams.
I want to construct a table for many, many samples and express their strength/weight scores.
I really need some help. Thanks to all,
Thurman
All test samples will be identical sized sheets with various treatments to improve stiffness..with the added weight of the treatment recorded. I will use the information to design and test stiffer parts to be used as wings in a rubber powered model airplane where weight and strength are important.
The bending and torsion loads will be in grams and deflections will be in inches. So, how do I express the results? Example: A 3 gram load at 25% chord will deflect .5 inches at the tip of the cantelevered sample which weighs 6 grams. A treated sample deflects .3 inches but weighs 6.2 grams.
I want to construct a table for many, many samples and express their strength/weight scores.
I really need some help. Thanks to all,
Thurman