According to ASTM D471, after immersion, one of the test methods need to cover are tensile strength (D412, Die C), elongation and hardness (D1415 or D2240). However, the specimens are from the available product (hose) and not in a form of flat sheets. Kindly please assist on this matter. Thank you in advanced.
Mould the specimen into dumbbell shape as per ASTM standard before immersing them for a specified unit time and test their mechanical properties after drying.
Hello Narissa!
I guess you can made a tubular specimens from the hose but you should keep proportion between gage length of the specimen and its cross-section area as it is in standard round or flat specimens. In this case you will obtain appropriate results of elongation and tensile stress. But it would be hard to attach the specimen to grippers of loading frame. If there is some fittings for this type of hose may be you can use them as adapters or make some special adapters for such tubular specimen.
I hope this thoughts will help you.
Thanks for the answers.
However, my sample (hose) is not suitable for dumbbell shape as per ASTM standard. In fact, according to the immersion test (ASTM D471), the sample should be cut into 50 mm x25 mm. Is there any possible method to determine the tensile strength, elongation and hardness for a product like hose?
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