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【金色暖阳】数学与系统科学学院第二次学生代表大会隆重召开-数学与系统科学学院网站

【金色暖阳】数学与系统科学学院第二次学生代表大会隆重召开-数学与系统科学学院网站
sdust.edu.cn - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from sdust.edu.cn Daily Mail and Mail on Sunday newspapers.

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支普齐哨所的"锅炉班"-中工军事-中工网

支普齐哨所的"锅炉班"-中工军事-中工网
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A Route for Avoiding Defects During Additive Manufacturing

Date Time
A Route for Avoiding Defects During Additive Manufacturing
Laser powder bed fusion is a dominant additive manufacturing technology that has yet to reach its potential. The problem facing industry is that tiny bubbles or pores sometimes form during the printing process, and these pores create weak spots in finished products.
When a slow-speed, high-power laser is melting metal powder during the 3D printing of a part, a keyhole-shaped cavity in the melt pool can result. Pores, i.e., defects, form at the bottom of the keyhole. New research published in Science reveals how the pores are generated and become defects trapped in solidifying metal. ....

United States , Anthony Rollett , Xuxiao Li , Niranjand Parab , Kamel Fezzaa , Cang Zhao , Tao Sun , Carnegie Mellon Next Manufacturing Center , University Of Utah , University Of Virginia , Argonne National Laboratory , Tsinghua University , Carnegie Mellon , Next Manufacturing Center , Wenda Tan , ஒன்றுபட்டது மாநிலங்களில் , காங் ழோ , தாவோ சூரியன் , கார்னகி மெலந் அடுத்தது உற்பத்தி மையம் , பல்கலைக்கழகம் ஆஃப் உட்டா , பல்கலைக்கழகம் ஆஃப் வர்ஜீனியா , ஆர்கோன் தேசிய ஆய்வகம் , கார்னகி மெலந் , அடுத்தது உற்பத்தி மையம் , வெண்டா பழுப்பு ,