Mutual comparison of acoustic, pyrometric and thermographic laser powder bed fusion monitoring
Materials & Design(2021)
摘要
•A microphone, a camera and a pyrometer are compared by synchronous application.•The microphone exhibits the highest sensitivity but is also the most susceptible.•Position-independent sensitivity has been demonstrated for the optical sensors.•Microphone placement and compensation recommendations are given.•Scan direction dependent shield gas interaction was uncovered by all sensors.
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关键词
Additive manufacturing,Laser powder bed fusion,Airborne noise,Pyrometry,Thermography,Process monitoring
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