نتایج جستجو برای: work hardening
تعداد نتایج: 955401 فیلتر نتایج به سال:
2016
Tak Lok Chan
It is usually assumed that ‘fire hardening’ the tips of spears, as practised by hunter–gatherers and early Homo spp., makes them harder and better suited for hunting. This suggestion was tested by subjecting coppiced poles of hazel to a fire-hardening process and comparing their mechanical properties to those of naturally seasoned poles. A Shore D hardness test showed that fire treatment slight...
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