By changing the nolch local ion of Charpy impact test specimens studied the effect of nolch location on toughness and cracking process in multi-layer welds.

通过改变焊缝夏比冲击试样的缺口取向，研究了缺口位向对多层焊缝金属韧性及断裂过程的影响。

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While most outside commentary about Startup Weekend focuses on the ideas and companies that emerge, in our experience the most enduring effect of Startup Weekend is its impact on the local and regional communities.

FORBES: Guest post written by Marc Nager and Claire Topalian