Infrared thermography of welding zones produced by polymer extrusion additive manufacturing.
Infrared thermography of welding zones produced by polymer extrusion additive manufacturing.
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DOI：
10.1016/j.addma.2016.06.007
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发表时间：
2016-10
影响因子：
11
通讯作者：
Migler KD
中科院分区：
文献类型：
--
作者：
Seppala JE;Migler KD
在常见的热塑性增材制造 (AM) 工艺中，固体聚合物长丝被熔化，通过光栅喷嘴挤出，焊接到相邻层上并固化。每个阶段的聚合物温度是控制这些非平衡过程的关键参数，但由于其强烈的空间和时间变化，很难准确测量。在这里，我们利用红外 (IR) 成像 - 结合必要的反射校正和校准程序 - 来测量 3D 打印过程中模型聚合物的温度分布。根据打印层（道路）和子层的温度分布，可以获得至关重要的焊接温度的时间分布。在典型的打印条件下，焊接温度以大约 100 °C/s 的速率下降，并在玻璃化转变温度以上保持大约 1 s。这些测量方法是开发控制和建模打印过程的策略以及开发将关键零件强度与材料和加工参数相关联的模型能力的第一步。
In common thermoplastic additive manufacturing (AM) processes, a solid polymer filament is melted, extruded though a rastering nozzle, welded onto neighboring layers and solidified. The temperature of the polymer at each of these stages is the key parameter governing these non-equilibrium processes, but due to its strong spatial and temporal variations, it is difficult to measure accurately. Here we utilize infrared (IR) imaging - in conjunction with necessary reflection corrections and calibration procedures - to measure these temperature profiles of a model polymer during 3D printing. From the temperature profiles of the printed layer (road) and sublayers, the temporal profile of the crucially important weld temperatures can be obtained. Under typical printing conditions, the weld temperature decreases at a rate of approximately 100 °C/s and remains above the glass transition temperature for approximately 1 s. These measurement methods are a first step in the development of strategies to control and model the printing processes and in the ability to develop models that correlate critical part strength with material and processing parameters.
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影响因子：
4.2
作者：
Marla, Vishnu T.;Shambaugh, Robert L.;Papavassiliou, Dimitrios V.
通讯作者：
Papavassiliou, Dimitrios V.
DOI：
10.1007/s00170-012-4686-y
发表时间：
2013-08-01
影响因子：
3.4
作者：
Monzon, Mario D.;Gibson, Ian;Marrero, Maria D.
通讯作者：
Marrero, Maria D.
影响因子：
3.9
作者：
Ahn, SH;Montero, M;Wright, PK
通讯作者：
Wright, PK
影响因子：
3.9
作者：
Sun, Q.;Rizvi, G. M.;Gu, P.
通讯作者：
Gu, P.
影响因子：
3.2
作者：
THOMPSON, M;WHITE, JR
通讯作者：
WHITE, JR