Secure 3D Printing: Reconstructing and Validating Solid Geometries using Toolpath Reverse Engineering
Secure 3D Printing: Reconstructing and Validating Solid Geometries using Toolpath Reverse Engineering
复制标题
安全 3D 打印：使用刀具路径逆向工程重建和验证实体几何形状
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
Michail Maniatakos
中科院分区：
文献类型：
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作者：
N. G. Tsoutsos;Homer Gamil;Michail Maniatakos
随着3D打印变得越来越普遍，传统的集中式流程链被转变为分布式制造模式，其中流程的每个步骤都可以外包给不同的方。尽管这项革命性技术带来了无数好处，但将部分流程外包给可能不受信任的各方会引发安全问题，因为恶意的设计修改可能会影响制造的3D几何形状的结构完整性。为了解决这个问题，我们引入了一个新的编译器，允许逆向工程G代码工具路径（即，描述几何图形如何打印的机器命令）来重建原始3D对象的近似。然后，我们的框架使用有限元分析来模拟不同应力条件下的重建对象，并验证其结构完整性，而不需要黄金模型参考。
As 3D printing becomes more ubiquitous, traditional centralized process chains are transformed to a distributed manufacturing model, where each step of the process can be outsourced to different parties. Despite the countless benefits of this revolutionary technology, outsourcing parts of the process to potentially untrusted parties raises security concerns, as malicious design modifications can impact the structural integrity of the manufactured 3D geometries. To address this problem, we introduce a novel compiler that allows reverse engineering G-code toolpaths (i.e., machine commands describing how a geometry is printed) to reconstruct a close approximation of the original 3D object. Our framework then uses Finite Element Analysis to simulate the reconstructed object under different stress conditions and validate its structural integrity, without requiring a golden model reference.