Flexural Fatigue (Dynamic Fatigue) - What material is best?
Flexural Fatigue (Dynamic Fatigue) - What material is best?
(OP)
I am developing a water pumping type of application which will involve the use of an elastomer that acts as a diaphragm. The configuration of the diaphragm is not yet set, but it could be in the form of a cylindrical layflat type of tube. In its intended use, it will be cycled rapidly and repeatedly. I would like some advice as to which material can likely survive the most cycles before failing due to flexural fatigue. I am considering polyurethane, silicone rubber and natural rubber. I did a quick internet and patent search and found that polyurethanes can go about one million cycles or so. I could not find other data. Are there general rules of thumb which can predict flex fatigue life, such as material hardness??





RE: Flexural Fatigue (Dynamic Fatigue) - What material is best?
RE: Flexural Fatigue (Dynamic Fatigue) - What material is best?
Thanks for the Masterflex reference. The layflat tube that I want to use is intended to be a very thin plastic or rubber film, perhaps .010 or less in thickness. I will still check out the Masterflex material.
RE: Flexural Fatigue (Dynamic Fatigue) - What material is best?
RE: Flexural Fatigue (Dynamic Fatigue) - What material is best?