3D Laser Forming of Metal Foam Sandwich Panels
3D Laser Forming of Metal Foam Sandwich Panels
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金属泡沫夹芯板的 3D 激光成型
DOI：
10.1115/1.4047242
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Lawrence Yao, Y.
中科院分区：
文献类型：
--
作者：
Bucher, Tizian;Finn, Connor;Verma, Ravi;Li, Wayne;Lawrence Yao, Y.
金属泡沫夹层板已经成为许多概念研究的主题，由于其特殊的刚度，重量轻，和碰撞吸收能力。然而，将材料弯曲成实际的工程形状具有挑战性，这一事实阻碍了材料的工业生产。仅在最近，已经表明使用激光弯曲金属泡沫夹层板是可能的。研究还表明，材料可以弯曲成欧几里得（2D）几何形状，并分析了控制激光诱导弯曲的机制。本研究的重点是将金属泡沫夹层板激光成形为非欧几里德（3D）几何形状。研究了二维激光成形的弯曲机制和工艺参数是否转化为三维变形。此外，通过比较实现相同3D几何形状的不同扫描图案来确定激光扫描长度的影响。结果表明，激光成形可以诱导碗和鞍形，两个基本的非欧几何形状所必需的三维变形。激光诱导弯曲和面内应变的量根据工艺条件和控制弯曲机制而变化。最后，激光扫描长度被证明是变得更加重要的金属泡沫夹层板，其中面板厚度往往是大的。
Metal foam sandwich panels have been the subject of many concept studies, due to their exceptional stiffness, light weight, and crash absorption capacity. Yet, the industrial production of the material has been hampered by the fact that it is challenging to bend the material into practical engineering shapes. Only recently, it has been shown that bending of metal foam sandwich panels is possible using lasers. It was also shown that the material can be bent into Euclidean (2D) geometries, and the governing laser-induced bending mechanisms were analyzed. This study was focused on laser forming of metal foam sandwich panels into non-Euclidean (3D) geometries. It was investigated whether the bending mechanisms and process parameters identified for 2D laser forming translate to 3D deformation. Additionally, the impact of the laser scan length was determined by comparing different scan patterns that achieve the same 3D geometries. It was shown that laser forming could induce 3D deformation necessary for both bowl and saddle shapes, the two fundamental non-Euclidean geometries. The amount of laser-induced bending and in-plane strains vary depending on process conditions and the governing bending mechanisms. Lastly, the laser scan length was shown to become more important for metal foam sandwich panels, where the panel thickness tends to be large.
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DOI：
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发表时间：
1989
期刊：
影响因子：
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作者：
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通讯作者：
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DOI：
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发表时间：
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DOI：
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发表时间：
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期刊：
Journal of Manufacturing Science and Engineering
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发表时间：
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DOI：
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发表时间：
2001
期刊：
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