Fig. 1 Two types of additively manufactured metamaterials with corresponding unit cells: ( a ) Schwarz Primitive and ( b ) origami More about this image found in Two types of additively manufactured metamaterials with corresponding unit ...

Fig. 2 A point cloud scanned from the AM-fabricated origami metamaterial using a structured-light scanner More about this image found in A point cloud scanned from the AM-fabricated origami metamaterial using a s...

Fig. 3 Flowchart of the developed research methodology More about this image found in Flowchart of the developed research methodology

Fig. 4 Voxel-based key points sampling of the scanned point cloud from AM-fabricated Schwarz Primitive: ( a ) original point cloud, ( b ) volumetric representation of point cloud, and ( c ) original points with sampled key points More about this image found in Voxel-based key points sampling of the scanned point cloud from AM-fabricat...

Fig. 5 Demonstration of point features in a local point cloud More about this image found in Demonstration of point features in a local point cloud

Fig. 6 ( a ) The distribution of Euclidean distances of all other points to a specific point on the front surface (marked by a solid dot) and ( b ) the distribution of geodesic distances of all other points to the same point. Dark colors indicate small distances while light colors indicate large d... More about this image found in ( a ) The distribution of Euclidean distances of all other points to a spec...

Fig. 7 The effect of changing the order of sampled key points on the origami metamaterial: ( a ) order sequence 1 and ( b ) order sequence 2 More about this image found in The effect of changing the order of sampled key points on the origami metam...

Fig. 8 Illustration of simulated in-control geometry and out-of-control geometries in Case I More about this image found in Illustration of simulated in-control geometry and out-of-control geometries...

Fig. 9 Illustration of simulated in-control geometry and out-of-control geometries in Case II More about this image found in Illustration of simulated in-control geometry and out-of-control geometries...

Fig. 10 Performances of the developed methodology: ( a ) F-score, ( b ) Accuracy, and ( c ) AU-ROC in the detection of simulated out-of-control geometries under global geometric variations (Case II) More about this image found in Performances of the developed methodology: ( a ) F-score, ( b ) Accuracy, a...

Fig. 11 Cause-and-effect diagram for the design of the ablation study More about this image found in Cause-and-effect diagram for the design of the ablation study

Fig. 12 The performances of the developed methodology with respect to ( a ) the varying number of key points, ( b ) the varying size of local region, and ( c ) the varying Gaussian kernel width More about this image found in The performances of the developed methodology with respect to ( a ) the var...

Fig. 13 ( a ) Printed origami with unperturbed crease pattern, ( b ) printed origami with low-level perturbation, ( c ) printed origami with high-level perturbation, ( d ) in-control geometry with dimension, ( e ) in-control geometry and out-of-control geometry with low-level perturbation, and ( f... More about this image found in ( a ) Printed origami with unperturbed crease pattern, ( b ) printed origam...

Fig. 14 Experimental setup for real-world case studies More about this image found in Experimental setup for real-world case studies

Fig. 15 Phase II control charts for the detection of perturbed patterns in fabricated origami metamaterials: ( a ) with low-level perturbation, and ( b ) with high-level perturbation More about this image found in Phase II control charts for the detection of perturbed patterns in fabricat...