سلام دوستان . وقت بخیر . کسی با تست کشش سر و کار داره که مفهوم این عبارت رو به من بگه؟
گفته شده سرعت تست کشش بایستی این مقدار باشه . در استاندارد و هندبوک
maximum speed shall not exceed in. per inch of reduced section per
minute; beyond yield or when determining tensile strength alone, the maximum speed shall not exceed ½in. per
inch of reduced section per minute
. For both cases, the minimum speed shall be greater than of this amount.”
This means that for a machined round test piece with a 2¼ in. reduced section, the rate prior to yielding can
range from a maximum of in./min (i.e., 2¼ in. reduced-section length × in./min) down to in./min (i.e.,
2¼ in. reduced-section length × in./min).

عبارتی که زیرش خط کشیدم.