The base material I used in my experiment is not dimensionally sufficient (Less width, 120 mm) to make tensile specimens according to ASTM D-638 standard (165 mm). Is it acceptable to make tensile specimens of reduced dimensions by following a particular ratio (half of all the dimensions of the standard specimen) with reference to ASTM standard.
You can perform a tensile stress but if you do it's not in the manner proscribed by the ASTM D-638 standard and so you can't say, for example, that your material meets or is acceptable for this standard. Standards are there to regulate every aspect of the test so that like is compared with like.
Yes. Sub-size samples can be made according to ASTM D638; Type IV (width 6 mm; overall length 115) and Type V (width 3.18; overall length 63.5) will work.
Gurusideswar Sivanarutchelvan Could you please tell me when to use Standard specimen (Plate type or sheet type) and when to use a subsize specimen?
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